Barramundi is naturally a mass spawning species, which can be induced to spawn in captivity under conditions that attempt to replicate the natural environment. The Australian Barramundi industry has on hand a large number of mature broodstock that are currently supplying the grow-out market, however, before selective breeding programs can begin, it is important to assess the levels of genetic diversity and relatedness of current captive broodstock populations.

Mass spawning hatchery practices using small broodstock populations, in addition to the cannibalistic nature of some fish species, contribute to a reduction of genetic diversity from parent to offspring and throughout the juvenile grow-out stages. This is of concern when establishing a selective breeding program for such species because the genetic diversity that is captured in the start-up and initial generations of the program is the basic ingredient for future genetic improvement. The aim of this thesis was to examine methods for capturing and conserving genetic diversity in mass spawning Barramundi (Lates calcarifer), when constructing a base population for a long-term selective breeding program for the species.

The results suggest that a mass spawning group of at least 30 Barramundi individuals is required to achieve a high participation rate of breeders and to limit the loss of genetic variation transferred to the offspring. Options for selecting candidates to compose a founding population were explored, and recommendations made to promote the longevity and impact of a selective breeding program for Barramundi.

Barramundi is naturally a mass spawning species, which can be induced to spawn in captivity under conditions that attempt to replicate the natural environment. The Australian Barramundi industry has on hand a large number of mature broodstock that are currently supplying the grow-out market, however, before selective breeding programs can begin, it is important to assess the levels of genetic diversity and relatedness of current captive broodstock populations.

Mass spawning hatchery practices using small broodstock populations, in addition to the cannibalistic nature of some fish species, contribute to a reduction of genetic diversity from parent to offspring and throughout the juvenile grow-out stages. This is of concern when establishing a selective breeding program for such species because the genetic diversity that is captured in the start-up and initial generations of the program is the basic ingredient for future genetic improvement. The aim of this thesis was to examine methods for capturing and conserving genetic diversity in mass spawning Barramundi (Lates calcarifer), when constructing a base population for a long-term selective breeding program for the species.

The results suggest that a mass spawning group of at least 30 Barramundi individuals is required to achieve a high participation rate of breeders and to limit the loss of genetic variation transferred to the offspring. Options for selecting candidates to compose a founding population were explored, and recommendations made to promote the longevity and impact of a selective breeding program for Barramundi.

Barramundi is naturally a mass spawning species, which can be induced to spawn in captivity under conditions that attempt to replicate the natural environment. The Australian Barramundi industry has on hand a large number of mature broodstock that are currently supplying the grow-out market, however, before selective breeding programs can begin, it is important to assess the levels of genetic diversity and relatedness of current captive broodstock populations.

Mass spawning hatchery practices using small broodstock populations, in addition to the cannibalistic nature of some fish species, contribute to a reduction of genetic diversity from parent to offspring and throughout the juvenile grow-out stages. This is of concern when establishing a selective breeding program for such species because the genetic diversity that is captured in the start-up and initial generations of the program is the basic ingredient for future genetic improvement. The aim of this thesis was to examine methods for capturing and conserving genetic diversity in mass spawning Barramundi (Lates calcarifer), when constructing a base population for a long-term selective breeding program for the species.

The results suggest that a mass spawning group of at least 30 Barramundi individuals is required to achieve a high participation rate of breeders and to limit the loss of genetic variation transferred to the offspring. Options for selecting candidates to compose a founding population were explored, and recommendations made to promote the longevity and impact of a selective breeding program for Barramundi.

Barramundi is naturally a mass spawning species, which can be induced to spawn in captivity under conditions that attempt to replicate the natural environment. The Australian Barramundi industry has on hand a large number of mature broodstock that are currently supplying the grow-out market, however, before selective breeding programs can begin, it is important to assess the levels of genetic diversity and relatedness of current captive broodstock populations.

Mass spawning hatchery practices using small broodstock populations, in addition to the cannibalistic nature of some fish species, contribute to a reduction of genetic diversity from parent to offspring and throughout the juvenile grow-out stages. This is of concern when establishing a selective breeding program for such species because the genetic diversity that is captured in the start-up and initial generations of the program is the basic ingredient for future genetic improvement. The aim of this thesis was to examine methods for capturing and conserving genetic diversity in mass spawning Barramundi (Lates calcarifer), when constructing a base population for a long-term selective breeding program for the species.

The results suggest that a mass spawning group of at least 30 Barramundi individuals is required to achieve a high participation rate of breeders and to limit the loss of genetic variation transferred to the offspring. Options for selecting candidates to compose a founding population were explored, and recommendations made to promote the longevity and impact of a selective breeding program for Barramundi.

Barramundi is naturally a mass spawning species, which can be induced to spawn in captivity under conditions that attempt to replicate the natural environment. The Australian Barramundi industry has on hand a large number of mature broodstock that are currently supplying the grow-out market, however, before selective breeding programs can begin, it is important to assess the levels of genetic diversity and relatedness of current captive broodstock populations.

Mass spawning hatchery practices using small broodstock populations, in addition to the cannibalistic nature of some fish species, contribute to a reduction of genetic diversity from parent to offspring and throughout the juvenile grow-out stages. This is of concern when establishing a selective breeding program for such species because the genetic diversity that is captured in the start-up and initial generations of the program is the basic ingredient for future genetic improvement. The aim of this thesis was to examine methods for capturing and conserving genetic diversity in mass spawning Barramundi (Lates calcarifer), when constructing a base population for a long-term selective breeding program for the species.

The results suggest that a mass spawning group of at least 30 Barramundi individuals is required to achieve a high participation rate of breeders and to limit the loss of genetic variation transferred to the offspring. Options for selecting candidates to compose a founding population were explored, and recommendations made to promote the longevity and impact of a selective breeding program for Barramundi.

Barramundi is naturally a mass spawning species, which can be induced to spawn in captivity under conditions that attempt to replicate the natural environment. The Australian Barramundi industry has on hand a large number of mature broodstock that are currently supplying the grow-out market, however, before selective breeding programs can begin, it is important to assess the levels of genetic diversity and relatedness of current captive broodstock populations.

Mass spawning hatchery practices using small broodstock populations, in addition to the cannibalistic nature of some fish species, contribute to a reduction of genetic diversity from parent to offspring and throughout the juvenile grow-out stages. This is of concern when establishing a selective breeding program for such species because the genetic diversity that is captured in the start-up and initial generations of the program is the basic ingredient for future genetic improvement. The aim of this thesis was to examine methods for capturing and conserving genetic diversity in mass spawning Barramundi (Lates calcarifer), when constructing a base population for a long-term selective breeding program for the species.

The results suggest that a mass spawning group of at least 30 Barramundi individuals is required to achieve a high participation rate of breeders and to limit the loss of genetic variation transferred to the offspring. Options for selecting candidates to compose a founding population were explored, and recommendations made to promote the longevity and impact of a selective breeding program for Barramundi.

Barramundi is naturally a mass spawning species, which can be induced to spawn in captivity under conditions that attempt to replicate the natural environment. The Australian Barramundi industry has on hand a large number of mature broodstock that are currently supplying the grow-out market, however, before selective breeding programs can begin, it is important to assess the levels of genetic diversity and relatedness of current captive broodstock populations.

Mass spawning hatchery practices using small broodstock populations, in addition to the cannibalistic nature of some fish species, contribute to a reduction of genetic diversity from parent to offspring and throughout the juvenile grow-out stages. This is of concern when establishing a selective breeding program for such species because the genetic diversity that is captured in the start-up and initial generations of the program is the basic ingredient for future genetic improvement. The aim of this thesis was to examine methods for capturing and conserving genetic diversity in mass spawning Barramundi (Lates calcarifer), when constructing a base population for a long-term selective breeding program for the species.

The results suggest that a mass spawning group of at least 30 Barramundi individuals is required to achieve a high participation rate of breeders and to limit the loss of genetic variation transferred to the offspring. Options for selecting candidates to compose a founding population were explored, and recommendations made to promote the longevity and impact of a selective breeding program for Barramundi.

Barramundi is naturally a mass spawning species, which can be induced to spawn in captivity under conditions that attempt to replicate the natural environment. The Australian Barramundi industry has on hand a large number of mature broodstock that are currently supplying the grow-out market, however, before selective breeding programs can begin, it is important to assess the levels of genetic diversity and relatedness of current captive broodstock populations.

Mass spawning hatchery practices using small broodstock populations, in addition to the cannibalistic nature of some fish species, contribute to a reduction of genetic diversity from parent to offspring and throughout the juvenile grow-out stages. This is of concern when establishing a selective breeding program for such species because the genetic diversity that is captured in the start-up and initial generations of the program is the basic ingredient for future genetic improvement. The aim of this thesis was to examine methods for capturing and conserving genetic diversity in mass spawning Barramundi (Lates calcarifer), when constructing a base population for a long-term selective breeding program for the species.

The results suggest that a mass spawning group of at least 30 Barramundi individuals is required to achieve a high participation rate of breeders and to limit the loss of genetic variation transferred to the offspring. Options for selecting candidates to compose a founding population were explored, and recommendations made to promote the longevity and impact of a selective breeding program for Barramundi.

Barramundi is naturally a mass spawning species, which can be induced to spawn in captivity under conditions that attempt to replicate the natural environment. The Australian Barramundi industry has on hand a large number of mature broodstock that are currently supplying the grow-out market, however, before selective breeding programs can begin, it is important to assess the levels of genetic diversity and relatedness of current captive broodstock populations.

Mass spawning hatchery practices using small broodstock populations, in addition to the cannibalistic nature of some fish species, contribute to a reduction of genetic diversity from parent to offspring and throughout the juvenile grow-out stages. This is of concern when establishing a selective breeding program for such species because the genetic diversity that is captured in the start-up and initial generations of the program is the basic ingredient for future genetic improvement. The aim of this thesis was to examine methods for capturing and conserving genetic diversity in mass spawning Barramundi (Lates calcarifer), when constructing a base population for a long-term selective breeding program for the species.

The results suggest that a mass spawning group of at least 30 Barramundi individuals is required to achieve a high participation rate of breeders and to limit the loss of genetic variation transferred to the offspring. Options for selecting candidates to compose a founding population were explored, and recommendations made to promote the longevity and impact of a selective breeding program for Barramundi.

Barramundi is naturally a mass spawning species, which can be induced to spawn in captivity under conditions that attempt to replicate the natural environment. The Australian Barramundi industry has on hand a large number of mature broodstock that are currently supplying the grow-out market, however, before selective breeding programs can begin, it is important to assess the levels of genetic diversity and relatedness of current captive broodstock populations.

Mass spawning hatchery practices using small broodstock populations, in addition to the cannibalistic nature of some fish species, contribute to a reduction of genetic diversity from parent to offspring and throughout the juvenile grow-out stages. This is of concern when establishing a selective breeding program for such species because the genetic diversity that is captured in the start-up and initial generations of the program is the basic ingredient for future genetic improvement. The aim of this thesis was to examine methods for capturing and conserving genetic diversity in mass spawning Barramundi (Lates calcarifer), when constructing a base population for a long-term selective breeding program for the species.

The results suggest that a mass spawning group of at least 30 Barramundi individuals is required to achieve a high participation rate of breeders and to limit the loss of genetic variation transferred to the offspring. Options for selecting candidates to compose a founding population were explored, and recommendations made to promote the longevity and impact of a selective breeding program for Barramundi.

Barramundi is naturally a mass spawning species, which can be induced to spawn in captivity under conditions that attempt to replicate the natural environment. The Australian Barramundi industry has on hand a large number of mature broodstock that are currently supplying the grow-out market, however, before selective breeding programs can begin, it is important to assess the levels of genetic diversity and relatedness of current captive broodstock populations.

Mass spawning hatchery practices using small broodstock populations, in addition to the cannibalistic nature of some fish species, contribute to a reduction of genetic diversity from parent to offspring and throughout the juvenile grow-out stages. This is of concern when establishing a selective breeding program for such species because the genetic diversity that is captured in the start-up and initial generations of the program is the basic ingredient for future genetic improvement. The aim of this thesis was to examine methods for capturing and conserving genetic diversity in mass spawning Barramundi (Lates calcarifer), when constructing a base population for a long-term selective breeding program for the species.

The results suggest that a mass spawning group of at least 30 Barramundi individuals is required to achieve a high participation rate of breeders and to limit the loss of genetic variation transferred to the offspring. Options for selecting candidates to compose a founding population were explored, and recommendations made to promote the longevity and impact of a selective breeding program for Barramundi.

Barramundi is naturally a mass spawning species, which can be induced to spawn in captivity under conditions that attempt to replicate the natural environment. The Australian Barramundi industry has on hand a large number of mature broodstock that are currently supplying the grow-out market, however, before selective breeding programs can begin, it is important to assess the levels of genetic diversity and relatedness of current captive broodstock populations.

Mass spawning hatchery practices using small broodstock populations, in addition to the cannibalistic nature of some fish species, contribute to a reduction of genetic diversity from parent to offspring and throughout the juvenile grow-out stages. This is of concern when establishing a selective breeding program for such species because the genetic diversity that is captured in the start-up and initial generations of the program is the basic ingredient for future genetic improvement. The aim of this thesis was to examine methods for capturing and conserving genetic diversity in mass spawning Barramundi (Lates calcarifer), when constructing a base population for a long-term selective breeding program for the species.

The results suggest that a mass spawning group of at least 30 Barramundi individuals is required to achieve a high participation rate of breeders and to limit the loss of genetic variation transferred to the offspring. Options for selecting candidates to compose a founding population were explored, and recommendations made to promote the longevity and impact of a selective breeding program for Barramundi.

Barramundi is naturally a mass spawning species, which can be induced to spawn in captivity under conditions that attempt to replicate the natural environment. The Australian Barramundi industry has on hand a large number of mature broodstock that are currently supplying the grow-out market, however, before selective breeding programs can begin, it is important to assess the levels of genetic diversity and relatedness of current captive broodstock populations.

Mass spawning hatchery practices using small broodstock populations, in addition to the cannibalistic nature of some fish species, contribute to a reduction of genetic diversity from parent to offspring and throughout the juvenile grow-out stages. This is of concern when establishing a selective breeding program for such species because the genetic diversity that is captured in the start-up and initial generations of the program is the basic ingredient for future genetic improvement. The aim of this thesis was to examine methods for capturing and conserving genetic diversity in mass spawning Barramundi (Lates calcarifer), when constructing a base population for a long-term selective breeding program for the species.

The results suggest that a mass spawning group of at least 30 Barramundi individuals is required to achieve a high participation rate of breeders and to limit the loss of genetic variation transferred to the offspring. Options for selecting candidates to compose a founding population were explored, and recommendations made to promote the longevity and impact of a selective breeding program for Barramundi.

Barramundi is naturally a mass spawning species, which can be induced to spawn in captivity under conditions that attempt to replicate the natural environment. The Australian Barramundi industry has on hand a large number of mature broodstock that are currently supplying the grow-out market, however, before selective breeding programs can begin, it is important to assess the levels of genetic diversity and relatedness of current captive broodstock populations.

Mass spawning hatchery practices using small broodstock populations, in addition to the cannibalistic nature of some fish species, contribute to a reduction of genetic diversity from parent to offspring and throughout the juvenile grow-out stages. This is of concern when establishing a selective breeding program for such species because the genetic diversity that is captured in the start-up and initial generations of the program is the basic ingredient for future genetic improvement. The aim of this thesis was to examine methods for capturing and conserving genetic diversity in mass spawning Barramundi (Lates calcarifer), when constructing a base population for a long-term selective breeding program for the species.

The results suggest that a mass spawning group of at least 30 Barramundi individuals is required to achieve a high participation rate of breeders and to limit the loss of genetic variation transferred to the offspring. Options for selecting candidates to compose a founding population were explored, and recommendations made to promote the longevity and impact of a selective breeding program for Barramundi.

Barramundi is naturally a mass spawning species, which can be induced to spawn in captivity under conditions that attempt to replicate the natural environment. The Australian Barramundi industry has on hand a large number of mature broodstock that are currently supplying the grow-out market, however, before selective breeding programs can begin, it is important to assess the levels of genetic diversity and relatedness of current captive broodstock populations.

Mass spawning hatchery practices using small broodstock populations, in addition to the cannibalistic nature of some fish species, contribute to a reduction of genetic diversity from parent to offspring and throughout the juvenile grow-out stages. This is of concern when establishing a selective breeding program for such species because the genetic diversity that is captured in the start-up and initial generations of the program is the basic ingredient for future genetic improvement. The aim of this thesis was to examine methods for capturing and conserving genetic diversity in mass spawning Barramundi (Lates calcarifer), when constructing a base population for a long-term selective breeding program for the species.

The results suggest that a mass spawning group of at least 30 Barramundi individuals is required to achieve a high participation rate of breeders and to limit the loss of genetic variation transferred to the offspring. Options for selecting candidates to compose a founding population were explored, and recommendations made to promote the longevity and impact of a selective breeding program for Barramundi.

Barramundi is naturally a mass spawning species, which can be induced to spawn in captivity under conditions that attempt to replicate the natural environment. The Australian Barramundi industry has on hand a large number of mature broodstock that are currently supplying the grow-out market, however, before selective breeding programs can begin, it is important to assess the levels of genetic diversity and relatedness of current captive broodstock populations.

Mass spawning hatchery practices using small broodstock populations, in addition to the cannibalistic nature of some fish species, contribute to a reduction of genetic diversity from parent to offspring and throughout the juvenile grow-out stages. This is of concern when establishing a selective breeding program for such species because the genetic diversity that is captured in the start-up and initial generations of the program is the basic ingredient for future genetic improvement. The aim of this thesis was to examine methods for capturing and conserving genetic diversity in mass spawning Barramundi (Lates calcarifer), when constructing a base population for a long-term selective breeding program for the species.

The results suggest that a mass spawning group of at least 30 Barramundi individuals is required to achieve a high participation rate of breeders and to limit the loss of genetic variation transferred to the offspring. Options for selecting candidates to compose a founding population were explored, and recommendations made to promote the longevity and impact of a selective breeding program for Barramundi.

Barramundi is naturally a mass spawning species, which can be induced to spawn in captivity under conditions that attempt to replicate the natural environment. The Australian Barramundi industry has on hand a large number of mature broodstock that are currently supplying the grow-out market, however, before selective breeding programs can begin, it is important to assess the levels of genetic diversity and relatedness of current captive broodstock populations.

Mass spawning hatchery practices using small broodstock populations, in addition to the cannibalistic nature of some fish species, contribute to a reduction of genetic diversity from parent to offspring and throughout the juvenile grow-out stages. This is of concern when establishing a selective breeding program for such species because the genetic diversity that is captured in the start-up and initial generations of the program is the basic ingredient for future genetic improvement. The aim of this thesis was to examine methods for capturing and conserving genetic diversity in mass spawning Barramundi (Lates calcarifer), when constructing a base population for a long-term selective breeding program for the species.

The results suggest that a mass spawning group of at least 30 Barramundi individuals is required to achieve a high participation rate of breeders and to limit the loss of genetic variation transferred to the offspring. Options for selecting candidates to compose a founding population were explored, and recommendations made to promote the longevity and impact of a selective breeding program for Barramundi.

Barramundi is naturally a mass spawning species, which can be induced to spawn in captivity under conditions that attempt to replicate the natural environment. The Australian Barramundi industry has on hand a large number of mature broodstock that are currently supplying the grow-out market, however, before selective breeding programs can begin, it is important to assess the levels of genetic diversity and relatedness of current captive broodstock populations.

Mass spawning hatchery practices using small broodstock populations, in addition to the cannibalistic nature of some fish species, contribute to a reduction of genetic diversity from parent to offspring and throughout the juvenile grow-out stages. This is of concern when establishing a selective breeding program for such species because the genetic diversity that is captured in the start-up and initial generations of the program is the basic ingredient for future genetic improvement. The aim of this thesis was to examine methods for capturing and conserving genetic diversity in mass spawning Barramundi (Lates calcarifer), when constructing a base population for a long-term selective breeding program for the species.

The results suggest that a mass spawning group of at least 30 Barramundi individuals is required to achieve a high participation rate of breeders and to limit the loss of genetic variation transferred to the offspring. Options for selecting candidates to compose a founding population were explored, and recommendations made to promote the longevity and impact of a selective breeding program for Barramundi.

Barramundi is naturally a mass spawning species, which can be induced to spawn in captivity under conditions that attempt to replicate the natural environment. The Australian Barramundi industry has on hand a large number of mature broodstock that are currently supplying the grow-out market, however, before selective breeding programs can begin, it is important to assess the levels of genetic diversity and relatedness of current captive broodstock populations.

Mass spawning hatchery practices using small broodstock populations, in addition to the cannibalistic nature of some fish species, contribute to a reduction of genetic diversity from parent to offspring and throughout the juvenile grow-out stages. This is of concern when establishing a selective breeding program for such species because the genetic diversity that is captured in the start-up and initial generations of the program is the basic ingredient for future genetic improvement. The aim of this thesis was to examine methods for capturing and conserving genetic diversity in mass spawning Barramundi (Lates calcarifer), when constructing a base population for a long-term selective breeding program for the species.

The results suggest that a mass spawning group of at least 30 Barramundi individuals is required to achieve a high participation rate of breeders and to limit the loss of genetic variation transferred to the offspring. Options for selecting candidates to compose a founding population were explored, and recommendations made to promote the longevity and impact of a selective breeding program for Barramundi.

Barramundi is naturally a mass spawning species, which can be induced to spawn in captivity under conditions that attempt to replicate the natural environment. The Australian Barramundi industry has on hand a large number of mature broodstock that are currently supplying the grow-out market, however, before selective breeding programs can begin, it is important to assess the levels of genetic diversity and relatedness of current captive broodstock populations.

Mass spawning hatchery practices using small broodstock populations, in addition to the cannibalistic nature of some fish species, contribute to a reduction of genetic diversity from parent to offspring and throughout the juvenile grow-out stages. This is of concern when establishing a selective breeding program for such species because the genetic diversity that is captured in the start-up and initial generations of the program is the basic ingredient for future genetic improvement. The aim of this thesis was to examine methods for capturing and conserving genetic diversity in mass spawning Barramundi (Lates calcarifer), when constructing a base population for a long-term selective breeding program for the species.

The results suggest that a mass spawning group of at least 30 Barramundi individuals is required to achieve a high participation rate of breeders and to limit the loss of genetic variation transferred to the offspring. Options for selecting candidates to compose a founding population were explored, and recommendations made to promote the longevity and impact of a selective breeding program for Barramundi.

Barramundi is naturally a mass spawning species, which can be induced to spawn in captivity under conditions that attempt to replicate the natural environment. The Australian Barramundi industry has on hand a large number of mature broodstock that are currently supplying the grow-out market, however, before selective breeding programs can begin, it is important to assess the levels of genetic diversity and relatedness of current captive broodstock populations.

Mass spawning hatchery practices using small broodstock populations, in addition to the cannibalistic nature of some fish species, contribute to a reduction of genetic diversity from parent to offspring and throughout the juvenile grow-out stages. This is of concern when establishing a selective breeding program for such species because the genetic diversity that is captured in the start-up and initial generations of the program is the basic ingredient for future genetic improvement. The aim of this thesis was to examine methods for capturing and conserving genetic diversity in mass spawning Barramundi (Lates calcarifer), when constructing a base population for a long-term selective breeding program for the species.

The results suggest that a mass spawning group of at least 30 Barramundi individuals is required to achieve a high participation rate of breeders and to limit the loss of genetic variation transferred to the offspring. Options for selecting candidates to compose a founding population were explored, and recommendations made to promote the longevity and impact of a selective breeding program for Barramundi.

Barramundi is naturally a mass spawning species, which can be induced to spawn in captivity under conditions that attempt to replicate the natural environment. The Australian Barramundi industry has on hand a large number of mature broodstock that are currently supplying the grow-out market, however, before selective breeding programs can begin, it is important to assess the levels of genetic diversity and relatedness of current captive broodstock populations.

Mass spawning hatchery practices using small broodstock populations, in addition to the cannibalistic nature of some fish species, contribute to a reduction of genetic diversity from parent to offspring and throughout the juvenile grow-out stages. This is of concern when establishing a selective breeding program for such species because the genetic diversity that is captured in the start-up and initial generations of the program is the basic ingredient for future genetic improvement. The aim of this thesis was to examine methods for capturing and conserving genetic diversity in mass spawning Barramundi (Lates calcarifer), when constructing a base population for a long-term selective breeding program for the species.

The results suggest that a mass spawning group of at least 30 Barramundi individuals is required to achieve a high participation rate of breeders and to limit the loss of genetic variation transferred to the offspring. Options for selecting candidates to compose a founding population were explored, and recommendations made to promote the longevity and impact of a selective breeding program for Barramundi.

Barramundi is naturally a mass spawning species, which can be induced to spawn in captivity under conditions that attempt to replicate the natural environment. The Australian Barramundi industry has on hand a large number of mature broodstock that are currently supplying the grow-out market, however, before selective breeding programs can begin, it is important to assess the levels of genetic diversity and relatedness of current captive broodstock populations.

Mass spawning hatchery practices using small broodstock populations, in addition to the cannibalistic nature of some fish species, contribute to a reduction of genetic diversity from parent to offspring and throughout the juvenile grow-out stages. This is of concern when establishing a selective breeding program for such species because the genetic diversity that is captured in the start-up and initial generations of the program is the basic ingredient for future genetic improvement. The aim of this thesis was to examine methods for capturing and conserving genetic diversity in mass spawning Barramundi (Lates calcarifer), when constructing a base population for a long-term selective breeding program for the species.

The results suggest that a mass spawning group of at least 30 Barramundi individuals is required to achieve a high participation rate of breeders and to limit the loss of genetic variation transferred to the offspring. Options for selecting candidates to compose a founding population were explored, and recommendations made to promote the longevity and impact of a selective breeding program for Barramundi.

Barramundi is naturally a mass spawning species, which can be induced to spawn in captivity under conditions that attempt to replicate the natural environment. The Australian Barramundi industry has on hand a large number of mature broodstock that are currently supplying the grow-out market, however, before selective breeding programs can begin, it is important to assess the levels of genetic diversity and relatedness of current captive broodstock populations.

Mass spawning hatchery practices using small broodstock populations, in addition to the cannibalistic nature of some fish species, contribute to a reduction of genetic diversity from parent to offspring and throughout the juvenile grow-out stages. This is of concern when establishing a selective breeding program for such species because the genetic diversity that is captured in the start-up and initial generations of the program is the basic ingredient for future genetic improvement. The aim of this thesis was to examine methods for capturing and conserving genetic diversity in mass spawning Barramundi (Lates calcarifer), when constructing a base population for a long-term selective breeding program for the species.

The results suggest that a mass spawning group of at least 30 Barramundi individuals is required to achieve a high participation rate of breeders and to limit the loss of genetic variation transferred to the offspring. Options for selecting candidates to compose a founding population were explored, and recommendations made to promote the longevity and impact of a selective breeding program for Barramundi.

Barramundi is naturally a mass spawning species, which can be induced to spawn in captivity under conditions that attempt to replicate the natural environment. The Australian Barramundi industry has on hand a large number of mature broodstock that are currently supplying the grow-out market, however, before selective breeding programs can begin, it is important to assess the levels of genetic diversity and relatedness of current captive broodstock populations.

Mass spawning hatchery practices using small broodstock populations, in addition to the cannibalistic nature of some fish species, contribute to a reduction of genetic diversity from parent to offspring and throughout the juvenile grow-out stages. This is of concern when establishing a selective breeding program for such species because the genetic diversity that is captured in the start-up and initial generations of the program is the basic ingredient for future genetic improvement. The aim of this thesis was to examine methods for capturing and conserving genetic diversity in mass spawning Barramundi (Lates calcarifer), when constructing a base population for a long-term selective breeding program for the species.

The results suggest that a mass spawning group of at least 30 Barramundi individuals is required to achieve a high participation rate of breeders and to limit the loss of genetic variation transferred to the offspring. Options for selecting candidates to compose a founding population were explored, and recommendations made to promote the longevity and impact of a selective breeding program for Barramundi.

Barramundi is naturally a mass spawning species, which can be induced to spawn in captivity under conditions that attempt to replicate the natural environment. The Australian Barramundi industry has on hand a large number of mature broodstock that are currently supplying the grow-out market, however, before selective breeding programs can begin, it is important to assess the levels of genetic diversity and relatedness of current captive broodstock populations.

Mass spawning hatchery practices using small broodstock populations, in addition to the cannibalistic nature of some fish species, contribute to a reduction of genetic diversity from parent to offspring and throughout the juvenile grow-out stages. This is of concern when establishing a selective breeding program for such species because the genetic diversity that is captured in the start-up and initial generations of the program is the basic ingredient for future genetic improvement. The aim of this thesis was to examine methods for capturing and conserving genetic diversity in mass spawning Barramundi (Lates calcarifer), when constructing a base population for a long-term selective breeding program for the species.

The results suggest that a mass spawning group of at least 30 Barramundi individuals is required to achieve a high participation rate of breeders and to limit the loss of genetic variation transferred to the offspring. Options for selecting candidates to compose a founding population were explored, and recommendations made to promote the longevity and impact of a selective breeding program for Barramundi.

Barramundi is naturally a mass spawning species, which can be induced to spawn in captivity under conditions that attempt to replicate the natural environment. The Australian Barramundi industry has on hand a large number of mature broodstock that are currently supplying the grow-out market, however, before selective breeding programs can begin, it is important to assess the levels of genetic diversity and relatedness of current captive broodstock populations.

Mass spawning hatchery practices using small broodstock populations, in addition to the cannibalistic nature of some fish species, contribute to a reduction of genetic diversity from parent to offspring and throughout the juvenile grow-out stages. This is of concern when establishing a selective breeding program for such species because the genetic diversity that is captured in the start-up and initial generations of the program is the basic ingredient for future genetic improvement. The aim of this thesis was to examine methods for capturing and conserving genetic diversity in mass spawning Barramundi (Lates calcarifer), when constructing a base population for a long-term selective breeding program for the species.

The results suggest that a mass spawning group of at least 30 Barramundi individuals is required to achieve a high participation rate of breeders and to limit the loss of genetic variation transferred to the offspring. Options for selecting candidates to compose a founding population were explored, and recommendations made to promote the longevity and impact of a selective breeding program for Barramundi.

Barramundi is naturally a mass spawning species, which can be induced to spawn in captivity under conditions that attempt to replicate the natural environment. The Australian Barramundi industry has on hand a large number of mature broodstock that are currently supplying the grow-out market, however, before selective breeding programs can begin, it is important to assess the levels of genetic diversity and relatedness of current captive broodstock populations.

Mass spawning hatchery practices using small broodstock populations, in addition to the cannibalistic nature of some fish species, contribute to a reduction of genetic diversity from parent to offspring and throughout the juvenile grow-out stages. This is of concern when establishing a selective breeding program for such species because the genetic diversity that is captured in the start-up and initial generations of the program is the basic ingredient for future genetic improvement. The aim of this thesis was to examine methods for capturing and conserving genetic diversity in mass spawning Barramundi (Lates calcarifer), when constructing a base population for a long-term selective breeding program for the species.

The results suggest that a mass spawning group of at least 30 Barramundi individuals is required to achieve a high participation rate of breeders and to limit the loss of genetic variation transferred to the offspring. Options for selecting candidates to compose a founding population were explored, and recommendations made to promote the longevity and impact of a selective breeding program for Barramundi.

Barramundi is naturally a mass spawning species, which can be induced to spawn in captivity under conditions that attempt to replicate the natural environment. The Australian Barramundi industry has on hand a large number of mature broodstock that are currently supplying the grow-out market, however, before selective breeding programs can begin, it is important to assess the levels of genetic diversity and relatedness of current captive broodstock populations.

Mass spawning hatchery practices using small broodstock populations, in addition to the cannibalistic nature of some fish species, contribute to a reduction of genetic diversity from parent to offspring and throughout the juvenile grow-out stages. This is of concern when establishing a selective breeding program for such species because the genetic diversity that is captured in the start-up and initial generations of the program is the basic ingredient for future genetic improvement. The aim of this thesis was to examine methods for capturing and conserving genetic diversity in mass spawning Barramundi (Lates calcarifer), when constructing a base population for a long-term selective breeding program for the species.

The results suggest that a mass spawning group of at least 30 Barramundi individuals is required to achieve a high participation rate of breeders and to limit the loss of genetic variation transferred to the offspring. Options for selecting candidates to compose a founding population were explored, and recommendations made to promote the longevity and impact of a selective breeding program for Barramundi.

Barramundi is naturally a mass spawning species, which can be induced to spawn in captivity under conditions that attempt to replicate the natural environment. The Australian Barramundi industry has on hand a large number of mature broodstock that are currently supplying the grow-out market, however, before selective breeding programs can begin, it is important to assess the levels of genetic diversity and relatedness of current captive broodstock populations.

Mass spawning hatchery practices using small broodstock populations, in addition to the cannibalistic nature of some fish species, contribute to a reduction of genetic diversity from parent to offspring and throughout the juvenile grow-out stages. This is of concern when establishing a selective breeding program for such species because the genetic diversity that is captured in the start-up and initial generations of the program is the basic ingredient for future genetic improvement. The aim of this thesis was to examine methods for capturing and conserving genetic diversity in mass spawning Barramundi (Lates calcarifer), when constructing a base population for a long-term selective breeding program for the species.

The results suggest that a mass spawning group of at least 30 Barramundi individuals is required to achieve a high participation rate of breeders and to limit the loss of genetic variation transferred to the offspring. Options for selecting candidates to compose a founding population were explored, and recommendations made to promote the longevity and impact of a selective breeding program for Barramundi.

Barramundi is naturally a mass spawning species, which can be induced to spawn in captivity under conditions that attempt to replicate the natural environment. The Australian Barramundi industry has on hand a large number of mature broodstock that are currently supplying the grow-out market, however, before selective breeding programs can begin, it is important to assess the levels of genetic diversity and relatedness of current captive broodstock populations.

Mass spawning hatchery practices using small broodstock populations, in addition to the cannibalistic nature of some fish species, contribute to a reduction of genetic diversity from parent to offspring and throughout the juvenile grow-out stages. This is of concern when establishing a selective breeding program for such species because the genetic diversity that is captured in the start-up and initial generations of the program is the basic ingredient for future genetic improvement. The aim of this thesis was to examine methods for capturing and conserving genetic diversity in mass spawning Barramundi (Lates calcarifer), when constructing a base population for a long-term selective breeding program for the species.

The results suggest that a mass spawning group of at least 30 Barramundi individuals is required to achieve a high participation rate of breeders and to limit the loss of genetic variation transferred to the offspring. Options for selecting candidates to compose a founding population were explored, and recommendations made to promote the longevity and impact of a selective breeding program for Barramundi.

Barramundi is naturally a mass spawning species, which can be induced to spawn in captivity under conditions that attempt to replicate the natural environment. The Australian Barramundi industry has on hand a large number of mature broodstock that are currently supplying the grow-out market, however, before selective breeding programs can begin, it is important to assess the levels of genetic diversity and relatedness of current captive broodstock populations.

Mass spawning hatchery practices using small broodstock populations, in addition to the cannibalistic nature of some fish species, contribute to a reduction of genetic diversity from parent to offspring and throughout the juvenile grow-out stages. This is of concern when establishing a selective breeding program for such species because the genetic diversity that is captured in the start-up and initial generations of the program is the basic ingredient for future genetic improvement. The aim of this thesis was to examine methods for capturing and conserving genetic diversity in mass spawning Barramundi (Lates calcarifer), when constructing a base population for a long-term selective breeding program for the species.

The results suggest that a mass spawning group of at least 30 Barramundi individuals is required to achieve a high participation rate of breeders and to limit the loss of genetic variation transferred to the offspring. Options for selecting candidates to compose a founding population were explored, and recommendations made to promote the longevity and impact of a selective breeding program for Barramundi.

Barramundi is naturally a mass spawning species, which can be induced to spawn in captivity under conditions that attempt to replicate the natural environment. The Australian Barramundi industry has on hand a large number of mature broodstock that are currently supplying the grow-out market, however, before selective breeding programs can begin, it is important to assess the levels of genetic diversity and relatedness of current captive broodstock populations.

Mass spawning hatchery practices using small broodstock populations, in addition to the cannibalistic nature of some fish species, contribute to a reduction of genetic diversity from parent to offspring and throughout the juvenile grow-out stages. This is of concern when establishing a selective breeding program for such species because the genetic diversity that is captured in the start-up and initial generations of the program is the basic ingredient for future genetic improvement. The aim of this thesis was to examine methods for capturing and conserving genetic diversity in mass spawning Barramundi (Lates calcarifer), when constructing a base population for a long-term selective breeding program for the species.

The results suggest that a mass spawning group of at least 30 Barramundi individuals is required to achieve a high participation rate of breeders and to limit the loss of genetic variation transferred to the offspring. Options for selecting candidates to compose a founding population were explored, and recommendations made to promote the longevity and impact of a selective breeding program for Barramundi.

Barramundi is naturally a mass spawning species, which can be induced to spawn in captivity under conditions that attempt to replicate the natural environment. The Australian Barramundi industry has on hand a large number of mature broodstock that are currently supplying the grow-out market, however, before selective breeding programs can begin, it is important to assess the levels of genetic diversity and relatedness of current captive broodstock populations.

Mass spawning hatchery practices using small broodstock populations, in addition to the cannibalistic nature of some fish species, contribute to a reduction of genetic diversity from parent to offspring and throughout the juvenile grow-out stages. This is of concern when establishing a selective breeding program for such species because the genetic diversity that is captured in the start-up and initial generations of the program is the basic ingredient for future genetic improvement. The aim of this thesis was to examine methods for capturing and conserving genetic diversity in mass spawning Barramundi (Lates calcarifer), when constructing a base population for a long-term selective breeding program for the species.

The results suggest that a mass spawning group of at least 30 Barramundi individuals is required to achieve a high participation rate of breeders and to limit the loss of genetic variation transferred to the offspring. Options for selecting candidates to compose a founding population were explored, and recommendations made to promote the longevity and impact of a selective breeding program for Barramundi.

Barramundi is naturally a mass spawning species, which can be induced to spawn in captivity under conditions that attempt to replicate the natural environment. The Australian Barramundi industry has on hand a large number of mature broodstock that are currently supplying the grow-out market, however, before selective breeding programs can begin, it is important to assess the levels of genetic diversity and relatedness of current captive broodstock populations.

Mass spawning hatchery practices using small broodstock populations, in addition to the cannibalistic nature of some fish species, contribute to a reduction of genetic diversity from parent to offspring and throughout the juvenile grow-out stages. This is of concern when establishing a selective breeding program for such species because the genetic diversity that is captured in the start-up and initial generations of the program is the basic ingredient for future genetic improvement. The aim of this thesis was to examine methods for capturing and conserving genetic diversity in mass spawning Barramundi (Lates calcarifer), when constructing a base population for a long-term selective breeding program for the species.

The results suggest that a mass spawning group of at least 30 Barramundi individuals is required to achieve a high participation rate of breeders and to limit the loss of genetic variation transferred to the offspring. Options for selecting candidates to compose a founding population were explored, and recommendations made to promote the longevity and impact of a selective breeding program for Barramundi.

Barramundi is naturally a mass spawning species, which can be induced to spawn in captivity under conditions that attempt to replicate the natural environment. The Australian Barramundi industry has on hand a large number of mature broodstock that are currently supplying the grow-out market, however, before selective breeding programs can begin, it is important to assess the levels of genetic diversity and relatedness of current captive broodstock populations.

Mass spawning hatchery practices using small broodstock populations, in addition to the cannibalistic nature of some fish species, contribute to a reduction of genetic diversity from parent to offspring and throughout the juvenile grow-out stages. This is of concern when establishing a selective breeding program for such species because the genetic diversity that is captured in the start-up and initial generations of the program is the basic ingredient for future genetic improvement. The aim of this thesis was to examine methods for capturing and conserving genetic diversity in mass spawning Barramundi (Lates calcarifer), when constructing a base population for a long-term selective breeding program for the species.

The results suggest that a mass spawning group of at least 30 Barramundi individuals is required to achieve a high participation rate of breeders and to limit the loss of genetic variation transferred to the offspring. Options for selecting candidates to compose a founding population were explored, and recommendations made to promote the longevity and impact of a selective breeding program for Barramundi.

Barramundi is naturally a mass spawning species, which can be induced to spawn in captivity under conditions that attempt to replicate the natural environment. The Australian Barramundi industry has on hand a large number of mature broodstock that are currently supplying the grow-out market, however, before selective breeding programs can begin, it is important to assess the levels of genetic diversity and relatedness of current captive broodstock populations.

Mass spawning hatchery practices using small broodstock populations, in addition to the cannibalistic nature of some fish species, contribute to a reduction of genetic diversity from parent to offspring and throughout the juvenile grow-out stages. This is of concern when establishing a selective breeding program for such species because the genetic diversity that is captured in the start-up and initial generations of the program is the basic ingredient for future genetic improvement. The aim of this thesis was to examine methods for capturing and conserving genetic diversity in mass spawning Barramundi (Lates calcarifer), when constructing a base population for a long-term selective breeding program for the species.

The results suggest that a mass spawning group of at least 30 Barramundi individuals is required to achieve a high participation rate of breeders and to limit the loss of genetic variation transferred to the offspring. Options for selecting candidates to compose a founding population were explored, and recommendations made to promote the longevity and impact of a selective breeding program for Barramundi.

Barramundi is naturally a mass spawning species, which can be induced to spawn in captivity under conditions that attempt to replicate the natural environment. The Australian Barramundi industry has on hand a large number of mature broodstock that are currently supplying the grow-out market, however, before selective breeding programs can begin, it is important to assess the levels of genetic diversity and relatedness of current captive broodstock populations.

Mass spawning hatchery practices using small broodstock populations, in addition to the cannibalistic nature of some fish species, contribute to a reduction of genetic diversity from parent to offspring and throughout the juvenile grow-out stages. This is of concern when establishing a selective breeding program for such species because the genetic diversity that is captured in the start-up and initial generations of the program is the basic ingredient for future genetic improvement. The aim of this thesis was to examine methods for capturing and conserving genetic diversity in mass spawning Barramundi (Lates calcarifer), when constructing a base population for a long-term selective breeding program for the species.

The results suggest that a mass spawning group of at least 30 Barramundi individuals is required to achieve a high participation rate of breeders and to limit the loss of genetic variation transferred to the offspring. Options for selecting candidates to compose a founding population were explored, and recommendations made to promote the longevity and impact of a selective breeding program for Barramundi.

Barramundi is naturally a mass spawning species, which can be induced to spawn in captivity under conditions that attempt to replicate the natural environment. The Australian Barramundi industry has on hand a large number of mature broodstock that are currently supplying the grow-out market, however, before selective breeding programs can begin, it is important to assess the levels of genetic diversity and relatedness of current captive broodstock populations.

Mass spawning hatchery practices using small broodstock populations, in addition to the cannibalistic nature of some fish species, contribute to a reduction of genetic diversity from parent to offspring and throughout the juvenile grow-out stages. This is of concern when establishing a selective breeding program for such species because the genetic diversity that is captured in the start-up and initial generations of the program is the basic ingredient for future genetic improvement. The aim of this thesis was to examine methods for capturing and conserving genetic diversity in mass spawning Barramundi (Lates calcarifer), when constructing a base population for a long-term selective breeding program for the species.

The results suggest that a mass spawning group of at least 30 Barramundi individuals is required to achieve a high participation rate of breeders and to limit the loss of genetic variation transferred to the offspring. Options for selecting candidates to compose a founding population were explored, and recommendations made to promote the longevity and impact of a selective breeding program for Barramundi.

Barramundi is naturally a mass spawning species, which can be induced to spawn in captivity under conditions that attempt to replicate the natural environment. The Australian Barramundi industry has on hand a large number of mature broodstock that are currently supplying the grow-out market, however, before selective breeding programs can begin, it is important to assess the levels of genetic diversity and relatedness of current captive broodstock populations.

Mass spawning hatchery practices using small broodstock populations, in addition to the cannibalistic nature of some fish species, contribute to a reduction of genetic diversity from parent to offspring and throughout the juvenile grow-out stages. This is of concern when establishing a selective breeding program for such species because the genetic diversity that is captured in the start-up and initial generations of the program is the basic ingredient for future genetic improvement. The aim of this thesis was to examine methods for capturing and conserving genetic diversity in mass spawning Barramundi (Lates calcarifer), when constructing a base population for a long-term selective breeding program for the species.

The results suggest that a mass spawning group of at least 30 Barramundi individuals is required to achieve a high participation rate of breeders and to limit the loss of genetic variation transferred to the offspring. Options for selecting candidates to compose a founding population were explored, and recommendations made to promote the longevity and impact of a selective breeding program for Barramundi.

Barramundi is naturally a mass spawning species, which can be induced to spawn in captivity under conditions that attempt to replicate the natural environment. The Australian Barramundi industry has on hand a large number of mature broodstock that are currently supplying the grow-out market, however, before selective breeding programs can begin, it is important to assess the levels of genetic diversity and relatedness of current captive broodstock populations.

Mass spawning hatchery practices using small broodstock populations, in addition to the cannibalistic nature of some fish species, contribute to a reduction of genetic diversity from parent to offspring and throughout the juvenile grow-out stages. This is of concern when establishing a selective breeding program for such species because the genetic diversity that is captured in the start-up and initial generations of the program is the basic ingredient for future genetic improvement. The aim of this thesis was to examine methods for capturing and conserving genetic diversity in mass spawning Barramundi (Lates calcarifer), when constructing a base population for a long-term selective breeding program for the species.

The results suggest that a mass spawning group of at least 30 Barramundi individuals is required to achieve a high participation rate of breeders and to limit the loss of genetic variation transferred to the offspring. Options for selecting candidates to compose a founding population were explored, and recommendations made to promote the longevity and impact of a selective breeding program for Barramundi.

Barramundi is naturally a mass spawning species, which can be induced to spawn in captivity under conditions that attempt to replicate the natural environment. The Australian Barramundi industry has on hand a large number of mature broodstock that are currently supplying the grow-out market, however, before selective breeding programs can begin, it is important to assess the levels of genetic diversity and relatedness of current captive broodstock populations.

Mass spawning hatchery practices using small broodstock populations, in addition to the cannibalistic nature of some fish species, contribute to a reduction of genetic diversity from parent to offspring and throughout the juvenile grow-out stages. This is of concern when establishing a selective breeding program for such species because the genetic diversity that is captured in the start-up and initial generations of the program is the basic ingredient for future genetic improvement. The aim of this thesis was to examine methods for capturing and conserving genetic diversity in mass spawning Barramundi (Lates calcarifer), when constructing a base population for a long-term selective breeding program for the species.

The results suggest that a mass spawning group of at least 30 Barramundi individuals is required to achieve a high participation rate of breeders and to limit the loss of genetic variation transferred to the offspring. Options for selecting candidates to compose a founding population were explored, and recommendations made to promote the longevity and impact of a selective breeding program for Barramundi.

Barramundi is naturally a mass spawning species, which can be induced to spawn in captivity under conditions that attempt to replicate the natural environment. The Australian Barramundi industry has on hand a large number of mature broodstock that are currently supplying the grow-out market, however, before selective breeding programs can begin, it is important to assess the levels of genetic diversity and relatedness of current captive broodstock populations.

Mass spawning hatchery practices using small broodstock populations, in addition to the cannibalistic nature of some fish species, contribute to a reduction of genetic diversity from parent to offspring and throughout the juvenile grow-out stages. This is of concern when establishing a selective breeding program for such species because the genetic diversity that is captured in the start-up and initial generations of the program is the basic ingredient for future genetic improvement. The aim of this thesis was to examine methods for capturing and conserving genetic diversity in mass spawning Barramundi (Lates calcarifer), when constructing a base population for a long-term selective breeding program for the species.

The results suggest that a mass spawning group of at least 30 Barramundi individuals is required to achieve a high participation rate of breeders and to limit the loss of genetic variation transferred to the offspring. Options for selecting candidates to compose a founding population were explored, and recommendations made to promote the longevity and impact of a selective breeding program for Barramundi.

Barramundi is naturally a mass spawning species, which can be induced to spawn in captivity under conditions that attempt to replicate the natural environment. The Australian Barramundi industry has on hand a large number of mature broodstock that are currently supplying the grow-out market, however, before selective breeding programs can begin, it is important to assess the levels of genetic diversity and relatedness of current captive broodstock populations.

Mass spawning hatchery practices using small broodstock populations, in addition to the cannibalistic nature of some fish species, contribute to a reduction of genetic diversity from parent to offspring and throughout the juvenile grow-out stages. This is of concern when establishing a selective breeding program for such species because the genetic diversity that is captured in the start-up and initial generations of the program is the basic ingredient for future genetic improvement. The aim of this thesis was to examine methods for capturing and conserving genetic diversity in mass spawning Barramundi (Lates calcarifer), when constructing a base population for a long-term selective breeding program for the species.

The results suggest that a mass spawning group of at least 30 Barramundi individuals is required to achieve a high participation rate of breeders and to limit the loss of genetic variation transferred to the offspring. Options for selecting candidates to compose a founding population were explored, and recommendations made to promote the longevity and impact of a selective breeding program for Barramundi.

Barramundi is naturally a mass spawning species, which can be induced to spawn in captivity under conditions that attempt to replicate the natural environment. The Australian Barramundi industry has on hand a large number of mature broodstock that are currently supplying the grow-out market, however, before selective breeding programs can begin, it is important to assess the levels of genetic diversity and relatedness of current captive broodstock populations.

Mass spawning hatchery practices using small broodstock populations, in addition to the cannibalistic nature of some fish species, contribute to a reduction of genetic diversity from parent to offspring and throughout the juvenile grow-out stages. This is of concern when establishing a selective breeding program for such species because the genetic diversity that is captured in the start-up and initial generations of the program is the basic ingredient for future genetic improvement. The aim of this thesis was to examine methods for capturing and conserving genetic diversity in mass spawning Barramundi (Lates calcarifer), when constructing a base population for a long-term selective breeding program for the species.

The results suggest that a mass spawning group of at least 30 Barramundi individuals is required to achieve a high participation rate of breeders and to limit the loss of genetic variation transferred to the offspring. Options for selecting candidates to compose a founding population were explored, and recommendations made to promote the longevity and impact of a selective breeding program for Barramundi.

Barramundi is naturally a mass spawning species, which can be induced to spawn in captivity under conditions that attempt to replicate the natural environment. The Australian Barramundi industry has on hand a large number of mature broodstock that are currently supplying the grow-out market, however, before selective breeding programs can begin, it is important to assess the levels of genetic diversity and relatedness of current captive broodstock populations.

Mass spawning hatchery practices using small broodstock populations, in addition to the cannibalistic nature of some fish species, contribute to a reduction of genetic diversity from parent to offspring and throughout the juvenile grow-out stages. This is of concern when establishing a selective breeding program for such species because the genetic diversity that is captured in the start-up and initial generations of the program is the basic ingredient for future genetic improvement. The aim of this thesis was to examine methods for capturing and conserving genetic diversity in mass spawning Barramundi (Lates calcarifer), when constructing a base population for a long-term selective breeding program for the species.

The results suggest that a mass spawning group of at least 30 Barramundi individuals is required to achieve a high participation rate of breeders and to limit the loss of genetic variation transferred to the offspring. Options for selecting candidates to compose a founding population were explored, and recommendations made to promote the longevity and impact of a selective breeding program for Barramundi.

Barramundi is naturally a mass spawning species, which can be induced to spawn in captivity under conditions that attempt to replicate the natural environment. The Australian Barramundi industry has on hand a large number of mature broodstock that are currently supplying the grow-out market, however, before selective breeding programs can begin, it is important to assess the levels of genetic diversity and relatedness of current captive broodstock populations.

Mass spawning hatchery practices using small broodstock populations, in addition to the cannibalistic nature of some fish species, contribute to a reduction of genetic diversity from parent to offspring and throughout the juvenile grow-out stages. This is of concern when establishing a selective breeding program for such species because the genetic diversity that is captured in the start-up and initial generations of the program is the basic ingredient for future genetic improvement. The aim of this thesis was to examine methods for capturing and conserving genetic diversity in mass spawning Barramundi (Lates calcarifer), when constructing a base population for a long-term selective breeding program for the species.

The results suggest that a mass spawning group of at least 30 Barramundi individuals is required to achieve a high participation rate of breeders and to limit the loss of genetic variation transferred to the offspring. Options for selecting candidates to compose a founding population were explored, and recommendations made to promote the longevity and impact of a selective breeding program for Barramundi.

Barramundi is naturally a mass spawning species, which can be induced to spawn in captivity under conditions that attempt to replicate the natural environment. The Australian Barramundi industry has on hand a large number of mature broodstock that are currently supplying the grow-out market, however, before selective breeding programs can begin, it is important to assess the levels of genetic diversity and relatedness of current captive broodstock populations.

Mass spawning hatchery practices using small broodstock populations, in addition to the cannibalistic nature of some fish species, contribute to a reduction of genetic diversity from parent to offspring and throughout the juvenile grow-out stages. This is of concern when establishing a selective breeding program for such species because the genetic diversity that is captured in the start-up and initial generations of the program is the basic ingredient for future genetic improvement. The aim of this thesis was to examine methods for capturing and conserving genetic diversity in mass spawning Barramundi (Lates calcarifer), when constructing a base population for a long-term selective breeding program for the species.

The results suggest that a mass spawning group of at least 30 Barramundi individuals is required to achieve a high participation rate of breeders and to limit the loss of genetic variation transferred to the offspring. Options for selecting candidates to compose a founding population were explored, and recommendations made to promote the longevity and impact of a selective breeding program for Barramundi.

Barramundi is naturally a mass spawning species, which can be induced to spawn in captivity under conditions that attempt to replicate the natural environment. The Australian Barramundi industry has on hand a large number of mature broodstock that are currently supplying the grow-out market, however, before selective breeding programs can begin, it is important to assess the levels of genetic diversity and relatedness of current captive broodstock populations.

Mass spawning hatchery practices using small broodstock populations, in addition to the cannibalistic nature of some fish species, contribute to a reduction of genetic diversity from parent to offspring and throughout the juvenile grow-out stages. This is of concern when establishing a selective breeding program for such species because the genetic diversity that is captured in the start-up and initial generations of the program is the basic ingredient for future genetic improvement. The aim of this thesis was to examine methods for capturing and conserving genetic diversity in mass spawning Barramundi (Lates calcarifer), when constructing a base population for a long-term selective breeding program for the species.

The results suggest that a mass spawning group of at least 30 Barramundi individuals is required to achieve a high participation rate of breeders and to limit the loss of genetic variation transferred to the offspring. Options for selecting candidates to compose a founding population were explored, and recommendations made to promote the longevity and impact of a selective breeding program for Barramundi.

Barramundi is naturally a mass spawning species, which can be induced to spawn in captivity under conditions that attempt to replicate the natural environment. The Australian Barramundi industry has on hand a large number of mature broodstock that are currently supplying the grow-out market, however, before selective breeding programs can begin, it is important to assess the levels of genetic diversity and relatedness of current captive broodstock populations.

Mass spawning hatchery practices using small broodstock populations, in addition to the cannibalistic nature of some fish species, contribute to a reduction of genetic diversity from parent to offspring and throughout the juvenile grow-out stages. This is of concern when establishing a selective breeding program for such species because the genetic diversity that is captured in the start-up and initial generations of the program is the basic ingredient for future genetic improvement. The aim of this thesis was to examine methods for capturing and conserving genetic diversity in mass spawning Barramundi (Lates calcarifer), when constructing a base population for a long-term selective breeding program for the species.

The results suggest that a mass spawning group of at least 30 Barramundi individuals is required to achieve a high participation rate of breeders and to limit the loss of genetic variation transferred to the offspring. Options for selecting candidates to compose a founding population were explored, and recommendations made to promote the longevity and impact of a selective breeding program for Barramundi.

Barramundi is naturally a mass spawning species, which can be induced to spawn in captivity under conditions that attempt to replicate the natural environment. The Australian Barramundi industry has on hand a large number of mature broodstock that are currently supplying the grow-out market, however, before selective breeding programs can begin, it is important to assess the levels of genetic diversity and relatedness of current captive broodstock populations.

Mass spawning hatchery practices using small broodstock populations, in addition to the cannibalistic nature of some fish species, contribute to a reduction of genetic diversity from parent to offspring and throughout the juvenile grow-out stages. This is of concern when establishing a selective breeding program for such species because the genetic diversity that is captured in the start-up and initial generations of the program is the basic ingredient for future genetic improvement. The aim of this thesis was to examine methods for capturing and conserving genetic diversity in mass spawning Barramundi (Lates calcarifer), when constructing a base population for a long-term selective breeding program for the species.

The results suggest that a mass spawning group of at least 30 Barramundi individuals is required to achieve a high participation rate of breeders and to limit the loss of genetic variation transferred to the offspring. Options for selecting candidates to compose a founding population were explored, and recommendations made to promote the longevity and impact of a selective breeding program for Barramundi.

Barramundi is naturally a mass spawning species, which can be induced to spawn in captivity under conditions that attempt to replicate the natural environment. The Australian Barramundi industry has on hand a large number of mature broodstock that are currently supplying the grow-out market, however, before selective breeding programs can begin, it is important to assess the levels of genetic diversity and relatedness of current captive broodstock populations.

Mass spawning hatchery practices using small broodstock populations, in addition to the cannibalistic nature of some fish species, contribute to a reduction of genetic diversity from parent to offspring and throughout the juvenile grow-out stages. This is of concern when establishing a selective breeding program for such species because the genetic diversity that is captured in the start-up and initial generations of the program is the basic ingredient for future genetic improvement. The aim of this thesis was to examine methods for capturing and conserving genetic diversity in mass spawning Barramundi (Lates calcarifer), when constructing a base population for a long-term selective breeding program for the species.

The results suggest that a mass spawning group of at least 30 Barramundi individuals is required to achieve a high participation rate of breeders and to limit the loss of genetic variation transferred to the offspring. Options for selecting candidates to compose a founding population were explored, and recommendations made to promote the longevity and impact of a selective breeding program for Barramundi.

Barramundi is naturally a mass spawning species, which can be induced to spawn in captivity under conditions that attempt to replicate the natural environment. The Australian Barramundi industry has on hand a large number of mature broodstock that are currently supplying the grow-out market, however, before selective breeding programs can begin, it is important to assess the levels of genetic diversity and relatedness of current captive broodstock populations.

Mass spawning hatchery practices using small broodstock populations, in addition to the cannibalistic nature of some fish species, contribute to a reduction of genetic diversity from parent to offspring and throughout the juvenile grow-out stages. This is of concern when establishing a selective breeding program for such species because the genetic diversity that is captured in the start-up and initial generations of the program is the basic ingredient for future genetic improvement. The aim of this thesis was to examine methods for capturing and conserving genetic diversity in mass spawning Barramundi (Lates calcarifer), when constructing a base population for a long-term selective breeding program for the species.

The results suggest that a mass spawning group of at least 30 Barramundi individuals is required to achieve a high participation rate of breeders and to limit the loss of genetic variation transferred to the offspring. Options for selecting candidates to compose a founding population were explored, and recommendations made to promote the longevity and impact of a selective breeding program for Barramundi.

Barramundi is naturally a mass spawning species, which can be induced to spawn in captivity under conditions that attempt to replicate the natural environment. The Australian Barramundi industry has on hand a large number of mature broodstock that are currently supplying the grow-out market, however, before selective breeding programs can begin, it is important to assess the levels of genetic diversity and relatedness of current captive broodstock populations.

Mass spawning hatchery practices using small broodstock populations, in addition to the cannibalistic nature of some fish species, contribute to a reduction of genetic diversity from parent to offspring and throughout the juvenile grow-out stages. This is of concern when establishing a selective breeding program for such species because the genetic diversity that is captured in the start-up and initial generations of the program is the basic ingredient for future genetic improvement. The aim of this thesis was to examine methods for capturing and conserving genetic diversity in mass spawning Barramundi (Lates calcarifer), when constructing a base population for a long-term selective breeding program for the species.

The results suggest that a mass spawning group of at least 30 Barramundi individuals is required to achieve a high participation rate of breeders and to limit the loss of genetic variation transferred to the offspring. Options for selecting candidates to compose a founding population were explored, and recommendations made to promote the longevity and impact of a selective breeding program for Barramundi.

Barramundi is naturally a mass spawning species, which can be induced to spawn in captivity under conditions that attempt to replicate the natural environment. The Australian Barramundi industry has on hand a large number of mature broodstock that are currently supplying the grow-out market, however, before selective breeding programs can begin, it is important to assess the levels of genetic diversity and relatedness of current captive broodstock populations.

Mass spawning hatchery practices using small broodstock populations, in addition to the cannibalistic nature of some fish species, contribute to a reduction of genetic diversity from parent to offspring and throughout the juvenile grow-out stages. This is of concern when establishing a selective breeding program for such species because the genetic diversity that is captured in the start-up and initial generations of the program is the basic ingredient for future genetic improvement. The aim of this thesis was to examine methods for capturing and conserving genetic diversity in mass spawning Barramundi (Lates calcarifer), when constructing a base population for a long-term selective breeding program for the species.

The results suggest that a mass spawning group of at least 30 Barramundi individuals is required to achieve a high participation rate of breeders and to limit the loss of genetic variation transferred to the offspring. Options for selecting candidates to compose a founding population were explored, and recommendations made to promote the longevity and impact of a selective breeding program for Barramundi.

Barramundi is naturally a mass spawning species, which can be induced to spawn in captivity under conditions that attempt to replicate the natural environment. The Australian Barramundi industry has on hand a large number of mature broodstock that are currently supplying the grow-out market, however, before selective breeding programs can begin, it is important to assess the levels of genetic diversity and relatedness of current captive broodstock populations.

Mass spawning hatchery practices using small broodstock populations, in addition to the cannibalistic nature of some fish species, contribute to a reduction of genetic diversity from parent to offspring and throughout the juvenile grow-out stages. This is of concern when establishing a selective breeding program for such species because the genetic diversity that is captured in the start-up and initial generations of the program is the basic ingredient for future genetic improvement. The aim of this thesis was to examine methods for capturing and conserving genetic diversity in mass spawning Barramundi (Lates calcarifer), when constructing a base population for a long-term selective breeding program for the species.

The results suggest that a mass spawning group of at least 30 Barramundi individuals is required to achieve a high participation rate of breeders and to limit the loss of genetic variation transferred to the offspring. Options for selecting candidates to compose a founding population were explored, and recommendations made to promote the longevity and impact of a selective breeding program for Barramundi.

Barramundi is naturally a mass spawning species, which can be induced to spawn in captivity under conditions that attempt to replicate the natural environment. The Australian Barramundi industry has on hand a large number of mature broodstock that are currently supplying the grow-out market, however, before selective breeding programs can begin, it is important to assess the levels of genetic diversity and relatedness of current captive broodstock populations.

Mass spawning hatchery practices using small broodstock populations, in addition to the cannibalistic nature of some fish species, contribute to a reduction of genetic diversity from parent to offspring and throughout the juvenile grow-out stages. This is of concern when establishing a selective breeding program for such species because the genetic diversity that is captured in the start-up and initial generations of the program is the basic ingredient for future genetic improvement. The aim of this thesis was to examine methods for capturing and conserving genetic diversity in mass spawning Barramundi (Lates calcarifer), when constructing a base population for a long-term selective breeding program for the species.

The results suggest that a mass spawning group of at least 30 Barramundi individuals is required to achieve a high participation rate of breeders and to limit the loss of genetic variation transferred to the offspring. Options for selecting candidates to compose a founding population were explored, and recommendations made to promote the longevity and impact of a selective breeding program for Barramundi.

Barramundi is naturally a mass spawning species, which can be induced to spawn in captivity under conditions that attempt to replicate the natural environment. The Australian Barramundi industry has on hand a large number of mature broodstock that are currently supplying the grow-out market, however, before selective breeding programs can begin, it is important to assess the levels of genetic diversity and relatedness of current captive broodstock populations.

Mass spawning hatchery practices using small broodstock populations, in addition to the cannibalistic nature of some fish species, contribute to a reduction of genetic diversity from parent to offspring and throughout the juvenile grow-out stages. This is of concern when establishing a selective breeding program for such species because the genetic diversity that is captured in the start-up and initial generations of the program is the basic ingredient for future genetic improvement. The aim of this thesis was to examine methods for capturing and conserving genetic diversity in mass spawning Barramundi (Lates calcarifer), when constructing a base population for a long-term selective breeding program for the species.

The results suggest that a mass spawning group of at least 30 Barramundi individuals is required to achieve a high participation rate of breeders and to limit the loss of genetic variation transferred to the offspring. Options for selecting candidates to compose a founding population were explored, and recommendations made to promote the longevity and impact of a selective breeding program for Barramundi.

Barramundi is naturally a mass spawning species, which can be induced to spawn in captivity under conditions that attempt to replicate the natural environment. The Australian Barramundi industry has on hand a large number of mature broodstock that are currently supplying the grow-out market, however, before selective breeding programs can begin, it is important to assess the levels of genetic diversity and relatedness of current captive broodstock populations.

Mass spawning hatchery practices using small broodstock populations, in addition to the cannibalistic nature of some fish species, contribute to a reduction of genetic diversity from parent to offspring and throughout the juvenile grow-out stages. This is of concern when establishing a selective breeding program for such species because the genetic diversity that is captured in the start-up and initial generations of the program is the basic ingredient for future genetic improvement. The aim of this thesis was to examine methods for capturing and conserving genetic diversity in mass spawning Barramundi (Lates calcarifer), when constructing a base population for a long-term selective breeding program for the species.

The results suggest that a mass spawning group of at least 30 Barramundi individuals is required to achieve a high participation rate of breeders and to limit the loss of genetic variation transferred to the offspring. Options for selecting candidates to compose a founding population were explored, and recommendations made to promote the longevity and impact of a selective breeding program for Barramundi.

Barramundi is naturally a mass spawning species, which can be induced to spawn in captivity under conditions that attempt to replicate the natural environment. The Australian Barramundi industry has on hand a large number of mature broodstock that are currently supplying the grow-out market, however, before selective breeding programs can begin, it is important to assess the levels of genetic diversity and relatedness of current captive broodstock populations.

Mass spawning hatchery practices using small broodstock populations, in addition to the cannibalistic nature of some fish species, contribute to a reduction of genetic diversity from parent to offspring and throughout the juvenile grow-out stages. This is of concern when establishing a selective breeding program for such species because the genetic diversity that is captured in the start-up and initial generations of the program is the basic ingredient for future genetic improvement. The aim of this thesis was to examine methods for capturing and conserving genetic diversity in mass spawning Barramundi (Lates calcarifer), when constructing a base population for a long-term selective breeding program for the species.

The results suggest that a mass spawning group of at least 30 Barramundi individuals is required to achieve a high participation rate of breeders and to limit the loss of genetic variation transferred to the offspring. Options for selecting candidates to compose a founding population were explored, and recommendations made to promote the longevity and impact of a selective breeding program for Barramundi.

Barramundi is naturally a mass spawning species, which can be induced to spawn in captivity under conditions that attempt to replicate the natural environment. The Australian Barramundi industry has on hand a large number of mature broodstock that are currently supplying the grow-out market, however, before selective breeding programs can begin, it is important to assess the levels of genetic diversity and relatedness of current captive broodstock populations.

Mass spawning hatchery practices using small broodstock populations, in addition to the cannibalistic nature of some fish species, contribute to a reduction of genetic diversity from parent to offspring and throughout the juvenile grow-out stages. This is of concern when establishing a selective breeding program for such species because the genetic diversity that is captured in the start-up and initial generations of the program is the basic ingredient for future genetic improvement. The aim of this thesis was to examine methods for capturing and conserving genetic diversity in mass spawning Barramundi (Lates calcarifer), when constructing a base population for a long-term selective breeding program for the species.

The results suggest that a mass spawning group of at least 30 Barramundi individuals is required to achieve a high participation rate of breeders and to limit the loss of genetic variation transferred to the offspring. Options for selecting candidates to compose a founding population were explored, and recommendations made to promote the longevity and impact of a selective breeding program for Barramundi.

Barramundi is naturally a mass spawning species, which can be induced to spawn in captivity under conditions that attempt to replicate the natural environment. The Australian Barramundi industry has on hand a large number of mature broodstock that are currently supplying the grow-out market, however, before selective breeding programs can begin, it is important to assess the levels of genetic diversity and relatedness of current captive broodstock populations.

Mass spawning hatchery practices using small broodstock populations, in addition to the cannibalistic nature of some fish species, contribute to a reduction of genetic diversity from parent to offspring and throughout the juvenile grow-out stages. This is of concern when establishing a selective breeding program for such species because the genetic diversity that is captured in the start-up and initial generations of the program is the basic ingredient for future genetic improvement. The aim of this thesis was to examine methods for capturing and conserving genetic diversity in mass spawning Barramundi (Lates calcarifer), when constructing a base population for a long-term selective breeding program for the species.

The results suggest that a mass spawning group of at least 30 Barramundi individuals is required to achieve a high participation rate of breeders and to limit the loss of genetic variation transferred to the offspring. Options for selecting candidates to compose a founding population were explored, and recommendations made to promote the longevity and impact of a selective breeding program for Barramundi.

Barramundi is naturally a mass spawning species, which can be induced to spawn in captivity under conditions that attempt to replicate the natural environment. The Australian Barramundi industry has on hand a large number of mature broodstock that are currently supplying the grow-out market, however, before selective breeding programs can begin, it is important to assess the levels of genetic diversity and relatedness of current captive broodstock populations.

Mass spawning hatchery practices using small broodstock populations, in addition to the cannibalistic nature of some fish species, contribute to a reduction of genetic diversity from parent to offspring and throughout the juvenile grow-out stages. This is of concern when establishing a selective breeding program for such species because the genetic diversity that is captured in the start-up and initial generations of the program is the basic ingredient for future genetic improvement. The aim of this thesis was to examine methods for capturing and conserving genetic diversity in mass spawning Barramundi (Lates calcarifer), when constructing a base population for a long-term selective breeding program for the species.

The results suggest that a mass spawning group of at least 30 Barramundi individuals is required to achieve a high participation rate of breeders and to limit the loss of genetic variation transferred to the offspring. Options for selecting candidates to compose a founding population were explored, and recommendations made to promote the longevity and impact of a selective breeding program for Barramundi.

Barramundi is naturally a mass spawning species, which can be induced to spawn in captivity under conditions that attempt to replicate the natural environment. The Australian Barramundi industry has on hand a large number of mature broodstock that are currently supplying the grow-out market, however, before selective breeding programs can begin, it is important to assess the levels of genetic diversity and relatedness of current captive broodstock populations.

Mass spawning hatchery practices using small broodstock populations, in addition to the cannibalistic nature of some fish species, contribute to a reduction of genetic diversity from parent to offspring and throughout the juvenile grow-out stages. This is of concern when establishing a selective breeding program for such species because the genetic diversity that is captured in the start-up and initial generations of the program is the basic ingredient for future genetic improvement. The aim of this thesis was to examine methods for capturing and conserving genetic diversity in mass spawning Barramundi (Lates calcarifer), when constructing a base population for a long-term selective breeding program for the species.

The results suggest that a mass spawning group of at least 30 Barramundi individuals is required to achieve a high participation rate of breeders and to limit the loss of genetic variation transferred to the offspring. Options for selecting candidates to compose a founding population were explored, and recommendations made to promote the longevity and impact of a selective breeding program for Barramundi.

Barramundi is naturally a mass spawning species, which can be induced to spawn in captivity under conditions that attempt to replicate the natural environment. The Australian Barramundi industry has on hand a large number of mature broodstock that are currently supplying the grow-out market, however, before selective breeding programs can begin, it is important to assess the levels of genetic diversity and relatedness of current captive broodstock populations.

Mass spawning hatchery practices using small broodstock populations, in addition to the cannibalistic nature of some fish species, contribute to a reduction of genetic diversity from parent to offspring and throughout the juvenile grow-out stages. This is of concern when establishing a selective breeding program for such species because the genetic diversity that is captured in the start-up and initial generations of the program is the basic ingredient for future genetic improvement. The aim of this thesis was to examine methods for capturing and conserving genetic diversity in mass spawning Barramundi (Lates calcarifer), when constructing a base population for a long-term selective breeding program for the species.

The results suggest that a mass spawning group of at least 30 Barramundi individuals is required to achieve a high participation rate of breeders and to limit the loss of genetic variation transferred to the offspring. Options for selecting candidates to compose a founding population were explored, and recommendations made to promote the longevity and impact of a selective breeding program for Barramundi.

Barramundi is naturally a mass spawning species, which can be induced to spawn in captivity under conditions that attempt to replicate the natural environment. The Australian Barramundi industry has on hand a large number of mature broodstock that are currently supplying the grow-out market, however, before selective breeding programs can begin, it is important to assess the levels of genetic diversity and relatedness of current captive broodstock populations.

Mass spawning hatchery practices using small broodstock populations, in addition to the cannibalistic nature of some fish species, contribute to a reduction of genetic diversity from parent to offspring and throughout the juvenile grow-out stages. This is of concern when establishing a selective breeding program for such species because the genetic diversity that is captured in the start-up and initial generations of the program is the basic ingredient for future genetic improvement. The aim of this thesis was to examine methods for capturing and conserving genetic diversity in mass spawning Barramundi (Lates calcarifer), when constructing a base population for a long-term selective breeding program for the species.

The results suggest that a mass spawning group of at least 30 Barramundi individuals is required to achieve a high participation rate of breeders and to limit the loss of genetic variation transferred to the offspring. Options for selecting candidates to compose a founding population were explored, and recommendations made to promote the longevity and impact of a selective breeding program for Barramundi.

Barramundi is naturally a mass spawning species, which can be induced to spawn in captivity under conditions that attempt to replicate the natural environment. The Australian Barramundi industry has on hand a large number of mature broodstock that are currently supplying the grow-out market, however, before selective breeding programs can begin, it is important to assess the levels of genetic diversity and relatedness of current captive broodstock populations.

Mass spawning hatchery practices using small broodstock populations, in addition to the cannibalistic nature of some fish species, contribute to a reduction of genetic diversity from parent to offspring and throughout the juvenile grow-out stages. This is of concern when establishing a selective breeding program for such species because the genetic diversity that is captured in the start-up and initial generations of the program is the basic ingredient for future genetic improvement. The aim of this thesis was to examine methods for capturing and conserving genetic diversity in mass spawning Barramundi (Lates calcarifer), when constructing a base population for a long-term selective breeding program for the species.

The results suggest that a mass spawning group of at least 30 Barramundi individuals is required to achieve a high participation rate of breeders and to limit the loss of genetic variation transferred to the offspring. Options for selecting candidates to compose a founding population were explored, and recommendations made to promote the longevity and impact of a selective breeding program for Barramundi.

Barramundi is naturally a mass spawning species, which can be induced to spawn in captivity under conditions that attempt to replicate the natural environment. The Australian Barramundi industry has on hand a large number of mature broodstock that are currently supplying the grow-out market, however, before selective breeding programs can begin, it is important to assess the levels of genetic diversity and relatedness of current captive broodstock populations.

Mass spawning hatchery practices using small broodstock populations, in addition to the cannibalistic nature of some fish species, contribute to a reduction of genetic diversity from parent to offspring and throughout the juvenile grow-out stages. This is of concern when establishing a selective breeding program for such species because the genetic diversity that is captured in the start-up and initial generations of the program is the basic ingredient for future genetic improvement. The aim of this thesis was to examine methods for capturing and conserving genetic diversity in mass spawning Barramundi (Lates calcarifer), when constructing a base population for a long-term selective breeding program for the species.

The results suggest that a mass spawning group of at least 30 Barramundi individuals is required to achieve a high participation rate of breeders and to limit the loss of genetic variation transferred to the offspring. Options for selecting candidates to compose a founding population were explored, and recommendations made to promote the longevity and impact of a selective breeding program for Barramundi.

Barramundi is naturally a mass spawning species, which can be induced to spawn in captivity under conditions that attempt to replicate the natural environment. The Australian Barramundi industry has on hand a large number of mature broodstock that are currently supplying the grow-out market, however, before selective breeding programs can begin, it is important to assess the levels of genetic diversity and relatedness of current captive broodstock populations.

Mass spawning hatchery practices using small broodstock populations, in addition to the cannibalistic nature of some fish species, contribute to a reduction of genetic diversity from parent to offspring and throughout the juvenile grow-out stages. This is of concern when establishing a selective breeding program for such species because the genetic diversity that is captured in the start-up and initial generations of the program is the basic ingredient for future genetic improvement. The aim of this thesis was to examine methods for capturing and conserving genetic diversity in mass spawning Barramundi (Lates calcarifer), when constructing a base population for a long-term selective breeding program for the species.

The results suggest that a mass spawning group of at least 30 Barramundi individuals is required to achieve a high participation rate of breeders and to limit the loss of genetic variation transferred to the offspring. Options for selecting candidates to compose a founding population were explored, and recommendations made to promote the longevity and impact of a selective breeding program for Barramundi.

Barramundi is naturally a mass spawning species, which can be induced to spawn in captivity under conditions that attempt to replicate the natural environment. The Australian Barramundi industry has on hand a large number of mature broodstock that are currently supplying the grow-out market, however, before selective breeding programs can begin, it is important to assess the levels of genetic diversity and relatedness of current captive broodstock populations.

Mass spawning hatchery practices using small broodstock populations, in addition to the cannibalistic nature of some fish species, contribute to a reduction of genetic diversity from parent to offspring and throughout the juvenile grow-out stages. This is of concern when establishing a selective breeding program for such species because the genetic diversity that is captured in the start-up and initial generations of the program is the basic ingredient for future genetic improvement. The aim of this thesis was to examine methods for capturing and conserving genetic diversity in mass spawning Barramundi (Lates calcarifer), when constructing a base population for a long-term selective breeding program for the species.

The results suggest that a mass spawning group of at least 30 Barramundi individuals is required to achieve a high participation rate of breeders and to limit the loss of genetic variation transferred to the offspring. Options for selecting candidates to compose a founding population were explored, and recommendations made to promote the longevity and impact of a selective breeding program for Barramundi.

Barramundi is naturally a mass spawning species, which can be induced to spawn in captivity under conditions that attempt to replicate the natural environment. The Australian Barramundi industry has on hand a large number of mature broodstock that are currently supplying the grow-out market, however, before selective breeding programs can begin, it is important to assess the levels of genetic diversity and relatedness of current captive broodstock populations.

Mass spawning hatchery practices using small broodstock populations, in addition to the cannibalistic nature of some fish species, contribute to a reduction of genetic diversity from parent to offspring and throughout the juvenile grow-out stages. This is of concern when establishing a selective breeding program for such species because the genetic diversity that is captured in the start-up and initial generations of the program is the basic ingredient for future genetic improvement. The aim of this thesis was to examine methods for capturing and conserving genetic diversity in mass spawning Barramundi (Lates calcarifer), when constructing a base population for a long-term selective breeding program for the species.

The results suggest that a mass spawning group of at least 30 Barramundi individuals is required to achieve a high participation rate of breeders and to limit the loss of genetic variation transferred to the offspring. Options for selecting candidates to compose a founding population were explored, and recommendations made to promote the longevity and impact of a selective breeding program for Barramundi.

Barramundi is naturally a mass spawning species, which can be induced to spawn in captivity under conditions that attempt to replicate the natural environment. The Australian Barramundi industry has on hand a large number of mature broodstock that are currently supplying the grow-out market, however, before selective breeding programs can begin, it is important to assess the levels of genetic diversity and relatedness of current captive broodstock populations.

Mass spawning hatchery practices using small broodstock populations, in addition to the cannibalistic nature of some fish species, contribute to a reduction of genetic diversity from parent to offspring and throughout the juvenile grow-out stages. This is of concern when establishing a selective breeding program for such species because the genetic diversity that is captured in the start-up and initial generations of the program is the basic ingredient for future genetic improvement. The aim of this thesis was to examine methods for capturing and conserving genetic diversity in mass spawning Barramundi (Lates calcarifer), when constructing a base population for a long-term selective breeding program for the species.

The results suggest that a mass spawning group of at least 30 Barramundi individuals is required to achieve a high participation rate of breeders and to limit the loss of genetic variation transferred to the offspring. Options for selecting candidates to compose a founding population were explored, and recommendations made to promote the longevity and impact of a selective breeding program for Barramundi.

Barramundi is naturally a mass spawning species, which can be induced to spawn in captivity under conditions that attempt to replicate the natural environment. The Australian Barramundi industry has on hand a large number of mature broodstock that are currently supplying the grow-out market, however, before selective breeding programs can begin, it is important to assess the levels of genetic diversity and relatedness of current captive broodstock populations.

Mass spawning hatchery practices using small broodstock populations, in addition to the cannibalistic nature of some fish species, contribute to a reduction of genetic diversity from parent to offspring and throughout the juvenile grow-out stages. This is of concern when establishing a selective breeding program for such species because the genetic diversity that is captured in the start-up and initial generations of the program is the basic ingredient for future genetic improvement. The aim of this thesis was to examine methods for capturing and conserving genetic diversity in mass spawning Barramundi (Lates calcarifer), when constructing a base population for a long-term selective breeding program for the species.

The results suggest that a mass spawning group of at least 30 Barramundi individuals is required to achieve a high participation rate of breeders and to limit the loss of genetic variation transferred to the offspring. Options for selecting candidates to compose a founding population were explored, and recommendations made to promote the longevity and impact of a selective breeding program for Barramundi.

Barramundi is naturally a mass spawning species, which can be induced to spawn in captivity under conditions that attempt to replicate the natural environment. The Australian Barramundi industry has on hand a large number of mature broodstock that are currently supplying the grow-out market, however, before selective breeding programs can begin, it is important to assess the levels of genetic diversity and relatedness of current captive broodstock populations.

Mass spawning hatchery practices using small broodstock populations, in addition to the cannibalistic nature of some fish species, contribute to a reduction of genetic diversity from parent to offspring and throughout the juvenile grow-out stages. This is of concern when establishing a selective breeding program for such species because the genetic diversity that is captured in the start-up and initial generations of the program is the basic ingredient for future genetic improvement. The aim of this thesis was to examine methods for capturing and conserving genetic diversity in mass spawning Barramundi (Lates calcarifer), when constructing a base population for a long-term selective breeding program for the species.

The results suggest that a mass spawning group of at least 30 Barramundi individuals is required to achieve a high participation rate of breeders and to limit the loss of genetic variation transferred to the offspring. Options for selecting candidates to compose a founding population were explored, and recommendations made to promote the longevity and impact of a selective breeding program for Barramundi.

Barramundi is naturally a mass spawning species, which can be induced to spawn in captivity under conditions that attempt to replicate the natural environment. The Australian Barramundi industry has on hand a large number of mature broodstock that are currently supplying the grow-out market, however, before selective breeding programs can begin, it is important to assess the levels of genetic diversity and relatedness of current captive broodstock populations.

Mass spawning hatchery practices using small broodstock populations, in addition to the cannibalistic nature of some fish species, contribute to a reduction of genetic diversity from parent to offspring and throughout the juvenile grow-out stages. This is of concern when establishing a selective breeding program for such species because the genetic diversity that is captured in the start-up and initial generations of the program is the basic ingredient for future genetic improvement. The aim of this thesis was to examine methods for capturing and conserving genetic diversity in mass spawning Barramundi (Lates calcarifer), when constructing a base population for a long-term selective breeding program for the species.

The results suggest that a mass spawning group of at least 30 Barramundi individuals is required to achieve a high participation rate of breeders and to limit the loss of genetic variation transferred to the offspring. Options for selecting candidates to compose a founding population were explored, and recommendations made to promote the longevity and impact of a selective breeding program for Barramundi.

Barramundi is naturally a mass spawning species, which can be induced to spawn in captivity under conditions that attempt to replicate the natural environment. The Australian Barramundi industry has on hand a large number of mature broodstock that are currently supplying the grow-out market, however, before selective breeding programs can begin, it is important to assess the levels of genetic diversity and relatedness of current captive broodstock populations.

Mass spawning hatchery practices using small broodstock populations, in addition to the cannibalistic nature of some fish species, contribute to a reduction of genetic diversity from parent to offspring and throughout the juvenile grow-out stages. This is of concern when establishing a selective breeding program for such species because the genetic diversity that is captured in the start-up and initial generations of the program is the basic ingredient for future genetic improvement. The aim of this thesis was to examine methods for capturing and conserving genetic diversity in mass spawning Barramundi (Lates calcarifer), when constructing a base population for a long-term selective breeding program for the species.

The results suggest that a mass spawning group of at least 30 Barramundi individuals is required to achieve a high participation rate of breeders and to limit the loss of genetic variation transferred to the offspring. Options for selecting candidates to compose a founding population were explored, and recommendations made to promote the longevity and impact of a selective breeding program for Barramundi.

Barramundi is naturally a mass spawning species, which can be induced to spawn in captivity under conditions that attempt to replicate the natural environment. The Australian Barramundi industry has on hand a large number of mature broodstock that are currently supplying the grow-out market, however, before selective breeding programs can begin, it is important to assess the levels of genetic diversity and relatedness of current captive broodstock populations.

Mass spawning hatchery practices using small broodstock populations, in addition to the cannibalistic nature of some fish species, contribute to a reduction of genetic diversity from parent to offspring and throughout the juvenile grow-out stages. This is of concern when establishing a selective breeding program for such species because the genetic diversity that is captured in the start-up and initial generations of the program is the basic ingredient for future genetic improvement. The aim of this thesis was to examine methods for capturing and conserving genetic diversity in mass spawning Barramundi (Lates calcarifer), when constructing a base population for a long-term selective breeding program for the species.

The results suggest that a mass spawning group of at least 30 Barramundi individuals is required to achieve a high participation rate of breeders and to limit the loss of genetic variation transferred to the offspring. Options for selecting candidates to compose a founding population were explored, and recommendations made to promote the longevity and impact of a selective breeding program for Barramundi.

Barramundi is naturally a mass spawning species, which can be induced to spawn in captivity under conditions that attempt to replicate the natural environment. The Australian Barramundi industry has on hand a large number of mature broodstock that are currently supplying the grow-out market, however, before selective breeding programs can begin, it is important to assess the levels of genetic diversity and relatedness of current captive broodstock populations.

Mass spawning hatchery practices using small broodstock populations, in addition to the cannibalistic nature of some fish species, contribute to a reduction of genetic diversity from parent to offspring and throughout the juvenile grow-out stages. This is of concern when establishing a selective breeding program for such species because the genetic diversity that is captured in the start-up and initial generations of the program is the basic ingredient for future genetic improvement. The aim of this thesis was to examine methods for capturing and conserving genetic diversity in mass spawning Barramundi (Lates calcarifer), when constructing a base population for a long-term selective breeding program for the species.

The results suggest that a mass spawning group of at least 30 Barramundi individuals is required to achieve a high participation rate of breeders and to limit the loss of genetic variation transferred to the offspring. Options for selecting candidates to compose a founding population were explored, and recommendations made to promote the longevity and impact of a selective breeding program for Barramundi.

Barramundi is naturally a mass spawning species, which can be induced to spawn in captivity under conditions that attempt to replicate the natural environment. The Australian Barramundi industry has on hand a large number of mature broodstock that are currently supplying the grow-out market, however, before selective breeding programs can begin, it is important to assess the levels of genetic diversity and relatedness of current captive broodstock populations.

Mass spawning hatchery practices using small broodstock populations, in addition to the cannibalistic nature of some fish species, contribute to a reduction of genetic diversity from parent to offspring and throughout the juvenile grow-out stages. This is of concern when establishing a selective breeding program for such species because the genetic diversity that is captured in the start-up and initial generations of the program is the basic ingredient for future genetic improvement. The aim of this thesis was to examine methods for capturing and conserving genetic diversity in mass spawning Barramundi (Lates calcarifer), when constructing a base population for a long-term selective breeding program for the species.

The results suggest that a mass spawning group of at least 30 Barramundi individuals is required to achieve a high participation rate of breeders and to limit the loss of genetic variation transferred to the offspring. Options for selecting candidates to compose a founding population were explored, and recommendations made to promote the longevity and impact of a selective breeding program for Barramundi.

Barramundi is naturally a mass spawning species, which can be induced to spawn in captivity under conditions that attempt to replicate the natural environment. The Australian Barramundi industry has on hand a large number of mature broodstock that are currently supplying the grow-out market, however, before selective breeding programs can begin, it is important to assess the levels of genetic diversity and relatedness of current captive broodstock populations.

Mass spawning hatchery practices using small broodstock populations, in addition to the cannibalistic nature of some fish species, contribute to a reduction of genetic diversity from parent to offspring and throughout the juvenile grow-out stages. This is of concern when establishing a selective breeding program for such species because the genetic diversity that is captured in the start-up and initial generations of the program is the basic ingredient for future genetic improvement. The aim of this thesis was to examine methods for capturing and conserving genetic diversity in mass spawning Barramundi (Lates calcarifer), when constructing a base population for a long-term selective breeding program for the species.

The results suggest that a mass spawning group of at least 30 Barramundi individuals is required to achieve a high participation rate of breeders and to limit the loss of genetic variation transferred to the offspring. Options for selecting candidates to compose a founding population were explored, and recommendations made to promote the longevity and impact of a selective breeding program for Barramundi.

Barramundi is naturally a mass spawning species, which can be induced to spawn in captivity under conditions that attempt to replicate the natural environment. The Australian Barramundi industry has on hand a large number of mature broodstock that are currently supplying the grow-out market, however, before selective breeding programs can begin, it is important to assess the levels of genetic diversity and relatedness of current captive broodstock populations.

Mass spawning hatchery practices using small broodstock populations, in addition to the cannibalistic nature of some fish species, contribute to a reduction of genetic diversity from parent to offspring and throughout the juvenile grow-out stages. This is of concern when establishing a selective breeding program for such species because the genetic diversity that is captured in the start-up and initial generations of the program is the basic ingredient for future genetic improvement. The aim of this thesis was to examine methods for capturing and conserving genetic diversity in mass spawning Barramundi (Lates calcarifer), when constructing a base population for a long-term selective breeding program for the species.

The results suggest that a mass spawning group of at least 30 Barramundi individuals is required to achieve a high participation rate of breeders and to limit the loss of genetic variation transferred to the offspring. Options for selecting candidates to compose a founding population were explored, and recommendations made to promote the longevity and impact of a selective breeding program for Barramundi.

Barramundi is naturally a mass spawning species, which can be induced to spawn in captivity under conditions that attempt to replicate the natural environment. The Australian Barramundi industry has on hand a large number of mature broodstock that are currently supplying the grow-out market, however, before selective breeding programs can begin, it is important to assess the levels of genetic diversity and relatedness of current captive broodstock populations.

Mass spawning hatchery practices using small broodstock populations, in addition to the cannibalistic nature of some fish species, contribute to a reduction of genetic diversity from parent to offspring and throughout the juvenile grow-out stages. This is of concern when establishing a selective breeding program for such species because the genetic diversity that is captured in the start-up and initial generations of the program is the basic ingredient for future genetic improvement. The aim of this thesis was to examine methods for capturing and conserving genetic diversity in mass spawning Barramundi (Lates calcarifer), when constructing a base population for a long-term selective breeding program for the species.

The results suggest that a mass spawning group of at least 30 Barramundi individuals is required to achieve a high participation rate of breeders and to limit the loss of genetic variation transferred to the offspring. Options for selecting candidates to compose a founding population were explored, and recommendations made to promote the longevity and impact of a selective breeding program for Barramundi.

Barramundi is naturally a mass spawning species, which can be induced to spawn in captivity under conditions that attempt to replicate the natural environment. The Australian Barramundi industry has on hand a large number of mature broodstock that are currently supplying the grow-out market, however, before selective breeding programs can begin, it is important to assess the levels of genetic diversity and relatedness of current captive broodstock populations.

Mass spawning hatchery practices using small broodstock populations, in addition to the cannibalistic nature of some fish species, contribute to a reduction of genetic diversity from parent to offspring and throughout the juvenile grow-out stages. This is of concern when establishing a selective breeding program for such species because the genetic diversity that is captured in the start-up and initial generations of the program is the basic ingredient for future genetic improvement. The aim of this thesis was to examine methods for capturing and conserving genetic diversity in mass spawning Barramundi (Lates calcarifer), when constructing a base population for a long-term selective breeding program for the species.

The results suggest that a mass spawning group of at least 30 Barramundi individuals is required to achieve a high participation rate of breeders and to limit the loss of genetic variation transferred to the offspring. Options for selecting candidates to compose a founding population were explored, and recommendations made to promote the longevity and impact of a selective breeding program for Barramundi.

Barramundi is naturally a mass spawning species, which can be induced to spawn in captivity under conditions that attempt to replicate the natural environment. The Australian Barramundi industry has on hand a large number of mature broodstock that are currently supplying the grow-out market, however, before selective breeding programs can begin, it is important to assess the levels of genetic diversity and relatedness of current captive broodstock populations.

Mass spawning hatchery practices using small broodstock populations, in addition to the cannibalistic nature of some fish species, contribute to a reduction of genetic diversity from parent to offspring and throughout the juvenile grow-out stages. This is of concern when establishing a selective breeding program for such species because the genetic diversity that is captured in the start-up and initial generations of the program is the basic ingredient for future genetic improvement. The aim of this thesis was to examine methods for capturing and conserving genetic diversity in mass spawning Barramundi (Lates calcarifer), when constructing a base population for a long-term selective breeding program for the species.

The results suggest that a mass spawning group of at least 30 Barramundi individuals is required to achieve a high participation rate of breeders and to limit the loss of genetic variation transferred to the offspring. Options for selecting candidates to compose a founding population were explored, and recommendations made to promote the longevity and impact of a selective breeding program for Barramundi.

Barramundi is naturally a mass spawning species, which can be induced to spawn in captivity under conditions that attempt to replicate the natural environment. The Australian Barramundi industry has on hand a large number of mature broodstock that are currently supplying the grow-out market, however, before selective breeding programs can begin, it is important to assess the levels of genetic diversity and relatedness of current captive broodstock populations.

Mass spawning hatchery practices using small broodstock populations, in addition to the cannibalistic nature of some fish species, contribute to a reduction of genetic diversity from parent to offspring and throughout the juvenile grow-out stages. This is of concern when establishing a selective breeding program for such species because the genetic diversity that is captured in the start-up and initial generations of the program is the basic ingredient for future genetic improvement. The aim of this thesis was to examine methods for capturing and conserving genetic diversity in mass spawning Barramundi (Lates calcarifer), when constructing a base population for a long-term selective breeding program for the species.

The results suggest that a mass spawning group of at least 30 Barramundi individuals is required to achieve a high participation rate of breeders and to limit the loss of genetic variation transferred to the offspring. Options for selecting candidates to compose a founding population were explored, and recommendations made to promote the longevity and impact of a selective breeding program for Barramundi.

Barramundi is naturally a mass spawning species, which can be induced to spawn in captivity under conditions that attempt to replicate the natural environment. The Australian Barramundi industry has on hand a large number of mature broodstock that are currently supplying the grow-out market, however, before selective breeding programs can begin, it is important to assess the levels of genetic diversity and relatedness of current captive broodstock populations.

Mass spawning hatchery practices using small broodstock populations, in addition to the cannibalistic nature of some fish species, contribute to a reduction of genetic diversity from parent to offspring and throughout the juvenile grow-out stages. This is of concern when establishing a selective breeding program for such species because the genetic diversity that is captured in the start-up and initial generations of the program is the basic ingredient for future genetic improvement. The aim of this thesis was to examine methods for capturing and conserving genetic diversity in mass spawning Barramundi (Lates calcarifer), when constructing a base population for a long-term selective breeding program for the species.

The results suggest that a mass spawning group of at least 30 Barramundi individuals is required to achieve a high participation rate of breeders and to limit the loss of genetic variation transferred to the offspring. Options for selecting candidates to compose a founding population were explored, and recommendations made to promote the longevity and impact of a selective breeding program for Barramundi.

Barramundi is naturally a mass spawning species, which can be induced to spawn in captivity under conditions that attempt to replicate the natural environment. The Australian Barramundi industry has on hand a large number of mature broodstock that are currently supplying the grow-out market, however, before selective breeding programs can begin, it is important to assess the levels of genetic diversity and relatedness of current captive broodstock populations.

Mass spawning hatchery practices using small broodstock populations, in addition to the cannibalistic nature of some fish species, contribute to a reduction of genetic diversity from parent to offspring and throughout the juvenile grow-out stages. This is of concern when establishing a selective breeding program for such species because the genetic diversity that is captured in the start-up and initial generations of the program is the basic ingredient for future genetic improvement. The aim of this thesis was to examine methods for capturing and conserving genetic diversity in mass spawning Barramundi (Lates calcarifer), when constructing a base population for a long-term selective breeding program for the species.

The results suggest that a mass spawning group of at least 30 Barramundi individuals is required to achieve a high participation rate of breeders and to limit the loss of genetic variation transferred to the offspring. Options for selecting candidates to compose a founding population were explored, and recommendations made to promote the longevity and impact of a selective breeding program for Barramundi.

Barramundi is naturally a mass spawning species, which can be induced to spawn in captivity under conditions that attempt to replicate the natural environment. The Australian Barramundi industry has on hand a large number of mature broodstock that are currently supplying the grow-out market, however, before selective breeding programs can begin, it is important to assess the levels of genetic diversity and relatedness of current captive broodstock populations.

Mass spawning hatchery practices using small broodstock populations, in addition to the cannibalistic nature of some fish species, contribute to a reduction of genetic diversity from parent to offspring and throughout the juvenile grow-out stages. This is of concern when establishing a selective breeding program for such species because the genetic diversity that is captured in the start-up and initial generations of the program is the basic ingredient for future genetic improvement. The aim of this thesis was to examine methods for capturing and conserving genetic diversity in mass spawning Barramundi (Lates calcarifer), when constructing a base population for a long-term selective breeding program for the species.

The results suggest that a mass spawning group of at least 30 Barramundi individuals is required to achieve a high participation rate of breeders and to limit the loss of genetic variation transferred to the offspring. Options for selecting candidates to compose a founding population were explored, and recommendations made to promote the longevity and impact of a selective breeding program for Barramundi.

Barramundi is naturally a mass spawning species, which can be induced to spawn in captivity under conditions that attempt to replicate the natural environment. The Australian Barramundi industry has on hand a large number of mature broodstock that are currently supplying the grow-out market, however, before selective breeding programs can begin, it is important to assess the levels of genetic diversity and relatedness of current captive broodstock populations.

Mass spawning hatchery practices using small broodstock populations, in addition to the cannibalistic nature of some fish species, contribute to a reduction of genetic diversity from parent to offspring and throughout the juvenile grow-out stages. This is of concern when establishing a selective breeding program for such species because the genetic diversity that is captured in the start-up and initial generations of the program is the basic ingredient for future genetic improvement. The aim of this thesis was to examine methods for capturing and conserving genetic diversity in mass spawning Barramundi (Lates calcarifer), when constructing a base population for a long-term selective breeding program for the species.

The results suggest that a mass spawning group of at least 30 Barramundi individuals is required to achieve a high participation rate of breeders and to limit the loss of genetic variation transferred to the offspring. Options for selecting candidates to compose a founding population were explored, and recommendations made to promote the longevity and impact of a selective breeding program for Barramundi.

Barramundi is naturally a mass spawning species, which can be induced to spawn in captivity under conditions that attempt to replicate the natural environment. The Australian Barramundi industry has on hand a large number of mature broodstock that are currently supplying the grow-out market, however, before selective breeding programs can begin, it is important to assess the levels of genetic diversity and relatedness of current captive broodstock populations.

Mass spawning hatchery practices using small broodstock populations, in addition to the cannibalistic nature of some fish species, contribute to a reduction of genetic diversity from parent to offspring and throughout the juvenile grow-out stages. This is of concern when establishing a selective breeding program for such species because the genetic diversity that is captured in the start-up and initial generations of the program is the basic ingredient for future genetic improvement. The aim of this thesis was to examine methods for capturing and conserving genetic diversity in mass spawning Barramundi (Lates calcarifer), when constructing a base population for a long-term selective breeding program for the species.

The results suggest that a mass spawning group of at least 30 Barramundi individuals is required to achieve a high participation rate of breeders and to limit the loss of genetic variation transferred to the offspring. Options for selecting candidates to compose a founding population were explored, and recommendations made to promote the longevity and impact of a selective breeding program for Barramundi.

Barramundi is naturally a mass spawning species, which can be induced to spawn in captivity under conditions that attempt to replicate the natural environment. The Australian Barramundi industry has on hand a large number of mature broodstock that are currently supplying the grow-out market, however, before selective breeding programs can begin, it is important to assess the levels of genetic diversity and relatedness of current captive broodstock populations.

Mass spawning hatchery practices using small broodstock populations, in addition to the cannibalistic nature of some fish species, contribute to a reduction of genetic diversity from parent to offspring and throughout the juvenile grow-out stages. This is of concern when establishing a selective breeding program for such species because the genetic diversity that is captured in the start-up and initial generations of the program is the basic ingredient for future genetic improvement. The aim of this thesis was to examine methods for capturing and conserving genetic diversity in mass spawning Barramundi (Lates calcarifer), when constructing a base population for a long-term selective breeding program for the species.

The results suggest that a mass spawning group of at least 30 Barramundi individuals is required to achieve a high participation rate of breeders and to limit the loss of genetic variation transferred to the offspring. Options for selecting candidates to compose a founding population were explored, and recommendations made to promote the longevity and impact of a selective breeding program for Barramundi.

Barramundi is naturally a mass spawning species, which can be induced to spawn in captivity under conditions that attempt to replicate the natural environment. The Australian Barramundi industry has on hand a large number of mature broodstock that are currently supplying the grow-out market, however, before selective breeding programs can begin, it is important to assess the levels of genetic diversity and relatedness of current captive broodstock populations.

Mass spawning hatchery practices using small broodstock populations, in addition to the cannibalistic nature of some fish species, contribute to a reduction of genetic diversity from parent to offspring and throughout the juvenile grow-out stages. This is of concern when establishing a selective breeding program for such species because the genetic diversity that is captured in the start-up and initial generations of the program is the basic ingredient for future genetic improvement. The aim of this thesis was to examine methods for capturing and conserving genetic diversity in mass spawning Barramundi (Lates calcarifer), when constructing a base population for a long-term selective breeding program for the species.

The results suggest that a mass spawning group of at least 30 Barramundi individuals is required to achieve a high participation rate of breeders and to limit the loss of genetic variation transferred to the offspring. Options for selecting candidates to compose a founding population were explored, and recommendations made to promote the longevity and impact of a selective breeding program for Barramundi.

Barramundi is naturally a mass spawning species, which can be induced to spawn in captivity under conditions that attempt to replicate the natural environment. The Australian Barramundi industry has on hand a large number of mature broodstock that are currently supplying the grow-out market, however, before selective breeding programs can begin, it is important to assess the levels of genetic diversity and relatedness of current captive broodstock populations.

Mass spawning hatchery practices using small broodstock populations, in addition to the cannibalistic nature of some fish species, contribute to a reduction of genetic diversity from parent to offspring and throughout the juvenile grow-out stages. This is of concern when establishing a selective breeding program for such species because the genetic diversity that is captured in the start-up and initial generations of the program is the basic ingredient for future genetic improvement. The aim of this thesis was to examine methods for capturing and conserving genetic diversity in mass spawning Barramundi (Lates calcarifer), when constructing a base population for a long-term selective breeding program for the species.

The results suggest that a mass spawning group of at least 30 Barramundi individuals is required to achieve a high participation rate of breeders and to limit the loss of genetic variation transferred to the offspring. Options for selecting candidates to compose a founding population were explored, and recommendations made to promote the longevity and impact of a selective breeding program for Barramundi.

Barramundi is naturally a mass spawning species, which can be induced to spawn in captivity under conditions that attempt to replicate the natural environment. The Australian Barramundi industry has on hand a large number of mature broodstock that are currently supplying the grow-out market, however, before selective breeding programs can begin, it is important to assess the levels of genetic diversity and relatedness of current captive broodstock populations.

Mass spawning hatchery practices using small broodstock populations, in addition to the cannibalistic nature of some fish species, contribute to a reduction of genetic diversity from parent to offspring and throughout the juvenile grow-out stages. This is of concern when establishing a selective breeding program for such species because the genetic diversity that is captured in the start-up and initial generations of the program is the basic ingredient for future genetic improvement. The aim of this thesis was to examine methods for capturing and conserving genetic diversity in mass spawning Barramundi (Lates calcarifer), when constructing a base population for a long-term selective breeding program for the species.

The results suggest that a mass spawning group of at least 30 Barramundi individuals is required to achieve a high participation rate of breeders and to limit the loss of genetic variation transferred to the offspring. Options for selecting candidates to compose a founding population were explored, and recommendations made to promote the longevity and impact of a selective breeding program for Barramundi.

Barramundi is naturally a mass spawning species, which can be induced to spawn in captivity under conditions that attempt to replicate the natural environment. The Australian Barramundi industry has on hand a large number of mature broodstock that are currently supplying the grow-out market, however, before selective breeding programs can begin, it is important to assess the levels of genetic diversity and relatedness of current captive broodstock populations.

Mass spawning hatchery practices using small broodstock populations, in addition to the cannibalistic nature of some fish species, contribute to a reduction of genetic diversity from parent to offspring and throughout the juvenile grow-out stages. This is of concern when establishing a selective breeding program for such species because the genetic diversity that is captured in the start-up and initial generations of the program is the basic ingredient for future genetic improvement. The aim of this thesis was to examine methods for capturing and conserving genetic diversity in mass spawning Barramundi (Lates calcarifer), when constructing a base population for a long-term selective breeding program for the species.

The results suggest that a mass spawning group of at least 30 Barramundi individuals is required to achieve a high participation rate of breeders and to limit the loss of genetic variation transferred to the offspring. Options for selecting candidates to compose a founding population were explored, and recommendations made to promote the longevity and impact of a selective breeding program for Barramundi.

Barramundi is naturally a mass spawning species, which can be induced to spawn in captivity under conditions that attempt to replicate the natural environment. The Australian Barramundi industry has on hand a large number of mature broodstock that are currently supplying the grow-out market, however, before selective breeding programs can begin, it is important to assess the levels of genetic diversity and relatedness of current captive broodstock populations.

Mass spawning hatchery practices using small broodstock populations, in addition to the cannibalistic nature of some fish species, contribute to a reduction of genetic diversity from parent to offspring and throughout the juvenile grow-out stages. This is of concern when establishing a selective breeding program for such species because the genetic diversity that is captured in the start-up and initial generations of the program is the basic ingredient for future genetic improvement. The aim of this thesis was to examine methods for capturing and conserving genetic diversity in mass spawning Barramundi (Lates calcarifer), when constructing a base population for a long-term selective breeding program for the species.

The results suggest that a mass spawning group of at least 30 Barramundi individuals is required to achieve a high participation rate of breeders and to limit the loss of genetic variation transferred to the offspring. Options for selecting candidates to compose a founding population were explored, and recommendations made to promote the longevity and impact of a selective breeding program for Barramundi.

Barramundi is naturally a mass spawning species, which can be induced to spawn in captivity under conditions that attempt to replicate the natural environment. The Australian Barramundi industry has on hand a large number of mature broodstock that are currently supplying the grow-out market, however, before selective breeding programs can begin, it is important to assess the levels of genetic diversity and relatedness of current captive broodstock populations.

Mass spawning hatchery practices using small broodstock populations, in addition to the cannibalistic nature of some fish species, contribute to a reduction of genetic diversity from parent to offspring and throughout the juvenile grow-out stages. This is of concern when establishing a selective breeding program for such species because the genetic diversity that is captured in the start-up and initial generations of the program is the basic ingredient for future genetic improvement. The aim of this thesis was to examine methods for capturing and conserving genetic diversity in mass spawning Barramundi (Lates calcarifer), when constructing a base population for a long-term selective breeding program for the species.

The results suggest that a mass spawning group of at least 30 Barramundi individuals is required to achieve a high participation rate of breeders and to limit the loss of genetic variation transferred to the offspring. Options for selecting candidates to compose a founding population were explored, and recommendations made to promote the longevity and impact of a selective breeding program for Barramundi.

Barramundi is naturally a mass spawning species, which can be induced to spawn in captivity under conditions that attempt to replicate the natural environment. The Australian Barramundi industry has on hand a large number of mature broodstock that are currently supplying the grow-out market, however, before selective breeding programs can begin, it is important to assess the levels of genetic diversity and relatedness of current captive broodstock populations.

Mass spawning hatchery practices using small broodstock populations, in addition to the cannibalistic nature of some fish species, contribute to a reduction of genetic diversity from parent to offspring and throughout the juvenile grow-out stages. This is of concern when establishing a selective breeding program for such species because the genetic diversity that is captured in the start-up and initial generations of the program is the basic ingredient for future genetic improvement. The aim of this thesis was to examine methods for capturing and conserving genetic diversity in mass spawning Barramundi (Lates calcarifer), when constructing a base population for a long-term selective breeding program for the species.

The results suggest that a mass spawning group of at least 30 Barramundi individuals is required to achieve a high participation rate of breeders and to limit the loss of genetic variation transferred to the offspring. Options for selecting candidates to compose a founding population were explored, and recommendations made to promote the longevity and impact of a selective breeding program for Barramundi.

Barramundi is naturally a mass spawning species, which can be induced to spawn in captivity under conditions that attempt to replicate the natural environment. The Australian Barramundi industry has on hand a large number of mature broodstock that are currently supplying the grow-out market, however, before selective breeding programs can begin, it is important to assess the levels of genetic diversity and relatedness of current captive broodstock populations.

Mass spawning hatchery practices using small broodstock populations, in addition to the cannibalistic nature of some fish species, contribute to a reduction of genetic diversity from parent to offspring and throughout the juvenile grow-out stages. This is of concern when establishing a selective breeding program for such species because the genetic diversity that is captured in the start-up and initial generations of the program is the basic ingredient for future genetic improvement. The aim of this thesis was to examine methods for capturing and conserving genetic diversity in mass spawning Barramundi (Lates calcarifer), when constructing a base population for a long-term selective breeding program for the species.

The results suggest that a mass spawning group of at least 30 Barramundi individuals is required to achieve a high participation rate of breeders and to limit the loss of genetic variation transferred to the offspring. Options for selecting candidates to compose a founding population were explored, and recommendations made to promote the longevity and impact of a selective breeding program for Barramundi.

Barramundi is naturally a mass spawning species, which can be induced to spawn in captivity under conditions that attempt to replicate the natural environment. The Australian Barramundi industry has on hand a large number of mature broodstock that are currently supplying the grow-out market, however, before selective breeding programs can begin, it is important to assess the levels of genetic diversity and relatedness of current captive broodstock populations.

Mass spawning hatchery practices using small broodstock populations, in addition to the cannibalistic nature of some fish species, contribute to a reduction of genetic diversity from parent to offspring and throughout the juvenile grow-out stages. This is of concern when establishing a selective breeding program for such species because the genetic diversity that is captured in the start-up and initial generations of the program is the basic ingredient for future genetic improvement. The aim of this thesis was to examine methods for capturing and conserving genetic diversity in mass spawning Barramundi (Lates calcarifer), when constructing a base population for a long-term selective breeding program for the species.

The results suggest that a mass spawning group of at least 30 Barramundi individuals is required to achieve a high participation rate of breeders and to limit the loss of genetic variation transferred to the offspring. Options for selecting candidates to compose a founding population were explored, and recommendations made to promote the longevity and impact of a selective breeding program for Barramundi.

Barramundi is naturally a mass spawning species, which can be induced to spawn in captivity under conditions that attempt to replicate the natural environment. The Australian Barramundi industry has on hand a large number of mature broodstock that are currently supplying the grow-out market, however, before selective breeding programs can begin, it is important to assess the levels of genetic diversity and relatedness of current captive broodstock populations.

Mass spawning hatchery practices using small broodstock populations, in addition to the cannibalistic nature of some fish species, contribute to a reduction of genetic diversity from parent to offspring and throughout the juvenile grow-out stages. This is of concern when establishing a selective breeding program for such species because the genetic diversity that is captured in the start-up and initial generations of the program is the basic ingredient for future genetic improvement. The aim of this thesis was to examine methods for capturing and conserving genetic diversity in mass spawning Barramundi (Lates calcarifer), when constructing a base population for a long-term selective breeding program for the species.

The results suggest that a mass spawning group of at least 30 Barramundi individuals is required to achieve a high participation rate of breeders and to limit the loss of genetic variation transferred to the offspring. Options for selecting candidates to compose a founding population were explored, and recommendations made to promote the longevity and impact of a selective breeding program for Barramundi.

Barramundi is naturally a mass spawning species, which can be induced to spawn in captivity under conditions that attempt to replicate the natural environment. The Australian Barramundi industry has on hand a large number of mature broodstock that are currently supplying the grow-out market, however, before selective breeding programs can begin, it is important to assess the levels of genetic diversity and relatedness of current captive broodstock populations.

Mass spawning hatchery practices using small broodstock populations, in addition to the cannibalistic nature of some fish species, contribute to a reduction of genetic diversity from parent to offspring and throughout the juvenile grow-out stages. This is of concern when establishing a selective breeding program for such species because the genetic diversity that is captured in the start-up and initial generations of the program is the basic ingredient for future genetic improvement. The aim of this thesis was to examine methods for capturing and conserving genetic diversity in mass spawning Barramundi (Lates calcarifer), when constructing a base population for a long-term selective breeding program for the species.

The results suggest that a mass spawning group of at least 30 Barramundi individuals is required to achieve a high participation rate of breeders and to limit the loss of genetic variation transferred to the offspring. Options for selecting candidates to compose a founding population were explored, and recommendations made to promote the longevity and impact of a selective breeding program for Barramundi.

Barramundi is naturally a mass spawning species, which can be induced to spawn in captivity under conditions that attempt to replicate the natural environment. The Australian Barramundi industry has on hand a large number of mature broodstock that are currently supplying the grow-out market, however, before selective breeding programs can begin, it is important to assess the levels of genetic diversity and relatedness of current captive broodstock populations.

Mass spawning hatchery practices using small broodstock populations, in addition to the cannibalistic nature of some fish species, contribute to a reduction of genetic diversity from parent to offspring and throughout the juvenile grow-out stages. This is of concern when establishing a selective breeding program for such species because the genetic diversity that is captured in the start-up and initial generations of the program is the basic ingredient for future genetic improvement. The aim of this thesis was to examine methods for capturing and conserving genetic diversity in mass spawning Barramundi (Lates calcarifer), when constructing a base population for a long-term selective breeding program for the species.

The results suggest that a mass spawning group of at least 30 Barramundi individuals is required to achieve a high participation rate of breeders and to limit the loss of genetic variation transferred to the offspring. Options for selecting candidates to compose a founding population were explored, and recommendations made to promote the longevity and impact of a selective breeding program for Barramundi.

Barramundi is naturally a mass spawning species, which can be induced to spawn in captivity under conditions that attempt to replicate the natural environment. The Australian Barramundi industry has on hand a large number of mature broodstock that are currently supplying the grow-out market, however, before selective breeding programs can begin, it is important to assess the levels of genetic diversity and relatedness of current captive broodstock populations.

Mass spawning hatchery practices using small broodstock populations, in addition to the cannibalistic nature of some fish species, contribute to a reduction of genetic diversity from parent to offspring and throughout the juvenile grow-out stages. This is of concern when establishing a selective breeding program for such species because the genetic diversity that is captured in the start-up and initial generations of the program is the basic ingredient for future genetic improvement. The aim of this thesis was to examine methods for capturing and conserving genetic diversity in mass spawning Barramundi (Lates calcarifer), when constructing a base population for a long-term selective breeding program for the species.

The results suggest that a mass spawning group of at least 30 Barramundi individuals is required to achieve a high participation rate of breeders and to limit the loss of genetic variation transferred to the offspring. Options for selecting candidates to compose a founding population were explored, and recommendations made to promote the longevity and impact of a selective breeding program for Barramundi.

Barramundi is naturally a mass spawning species, which can be induced to spawn in captivity under conditions that attempt to replicate the natural environment. The Australian Barramundi industry has on hand a large number of mature broodstock that are currently supplying the grow-out market, however, before selective breeding programs can begin, it is important to assess the levels of genetic diversity and relatedness of current captive broodstock populations.

Mass spawning hatchery practices using small broodstock populations, in addition to the cannibalistic nature of some fish species, contribute to a reduction of genetic diversity from parent to offspring and throughout the juvenile grow-out stages. This is of concern when establishing a selective breeding program for such species because the genetic diversity that is captured in the start-up and initial generations of the program is the basic ingredient for future genetic improvement. The aim of this thesis was to examine methods for capturing and conserving genetic diversity in mass spawning Barramundi (Lates calcarifer), when constructing a base population for a long-term selective breeding program for the species.

The results suggest that a mass spawning group of at least 30 Barramundi individuals is required to achieve a high participation rate of breeders and to limit the loss of genetic variation transferred to the offspring. Options for selecting candidates to compose a founding population were explored, and recommendations made to promote the longevity and impact of a selective breeding program for Barramundi.

Barramundi is naturally a mass spawning species, which can be induced to spawn in captivity under conditions that attempt to replicate the natural environment. The Australian Barramundi industry has on hand a large number of mature broodstock that are currently supplying the grow-out market, however, before selective breeding programs can begin, it is important to assess the levels of genetic diversity and relatedness of current captive broodstock populations.

Mass spawning hatchery practices using small broodstock populations, in addition to the cannibalistic nature of some fish species, contribute to a reduction of genetic diversity from parent to offspring and throughout the juvenile grow-out stages. This is of concern when establishing a selective breeding program for such species because the genetic diversity that is captured in the start-up and initial generations of the program is the basic ingredient for future genetic improvement. The aim of this thesis was to examine methods for capturing and conserving genetic diversity in mass spawning Barramundi (Lates calcarifer), when constructing a base population for a long-term selective breeding program for the species.

The results suggest that a mass spawning group of at least 30 Barramundi individuals is required to achieve a high participation rate of breeders and to limit the loss of genetic variation transferred to the offspring. Options for selecting candidates to compose a founding population were explored, and recommendations made to promote the longevity and impact of a selective breeding program for Barramundi.

Barramundi is naturally a mass spawning species, which can be induced to spawn in captivity under conditions that attempt to replicate the natural environment. The Australian Barramundi industry has on hand a large number of mature broodstock that are currently supplying the grow-out market, however, before selective breeding programs can begin, it is important to assess the levels of genetic diversity and relatedness of current captive broodstock populations.

Mass spawning hatchery practices using small broodstock populations, in addition to the cannibalistic nature of some fish species, contribute to a reduction of genetic diversity from parent to offspring and throughout the juvenile grow-out stages. This is of concern when establishing a selective breeding program for such species because the genetic diversity that is captured in the start-up and initial generations of the program is the basic ingredient for future genetic improvement. The aim of this thesis was to examine methods for capturing and conserving genetic diversity in mass spawning Barramundi (Lates calcarifer), when constructing a base population for a long-term selective breeding program for the species.

The results suggest that a mass spawning group of at least 30 Barramundi individuals is required to achieve a high participation rate of breeders and to limit the loss of genetic variation transferred to the offspring. Options for selecting candidates to compose a founding population were explored, and recommendations made to promote the longevity and impact of a selective breeding program for Barramundi.

Barramundi is naturally a mass spawning species, which can be induced to spawn in captivity under conditions that attempt to replicate the natural environment. The Australian Barramundi industry has on hand a large number of mature broodstock that are currently supplying the grow-out market, however, before selective breeding programs can begin, it is important to assess the levels of genetic diversity and relatedness of current captive broodstock populations.

Mass spawning hatchery practices using small broodstock populations, in addition to the cannibalistic nature of some fish species, contribute to a reduction of genetic diversity from parent to offspring and throughout the juvenile grow-out stages. This is of concern when establishing a selective breeding program for such species because the genetic diversity that is captured in the start-up and initial generations of the program is the basic ingredient for future genetic improvement. The aim of this thesis was to examine methods for capturing and conserving genetic diversity in mass spawning Barramundi (Lates calcarifer), when constructing a base population for a long-term selective breeding program for the species.

The results suggest that a mass spawning group of at least 30 Barramundi individuals is required to achieve a high participation rate of breeders and to limit the loss of genetic variation transferred to the offspring. Options for selecting candidates to compose a founding population were explored, and recommendations made to promote the longevity and impact of a selective breeding program for Barramundi.

Barramundi is naturally a mass spawning species, which can be induced to spawn in captivity under conditions that attempt to replicate the natural environment. The Australian Barramundi industry has on hand a large number of mature broodstock that are currently supplying the grow-out market, however, before selective breeding programs can begin, it is important to assess the levels of genetic diversity and relatedness of current captive broodstock populations.

Mass spawning hatchery practices using small broodstock populations, in addition to the cannibalistic nature of some fish species, contribute to a reduction of genetic diversity from parent to offspring and throughout the juvenile grow-out stages. This is of concern when establishing a selective breeding program for such species because the genetic diversity that is captured in the start-up and initial generations of the program is the basic ingredient for future genetic improvement. The aim of this thesis was to examine methods for capturing and conserving genetic diversity in mass spawning Barramundi (Lates calcarifer), when constructing a base population for a long-term selective breeding program for the species.

The results suggest that a mass spawning group of at least 30 Barramundi individuals is required to achieve a high participation rate of breeders and to limit the loss of genetic variation transferred to the offspring. Options for selecting candidates to compose a founding population were explored, and recommendations made to promote the longevity and impact of a selective breeding program for Barramundi.

Barramundi is naturally a mass spawning species, which can be induced to spawn in captivity under conditions that attempt to replicate the natural environment. The Australian Barramundi industry has on hand a large number of mature broodstock that are currently supplying the grow-out market, however, before selective breeding programs can begin, it is important to assess the levels of genetic diversity and relatedness of current captive broodstock populations.

Mass spawning hatchery practices using small broodstock populations, in addition to the cannibalistic nature of some fish species, contribute to a reduction of genetic diversity from parent to offspring and throughout the juvenile grow-out stages. This is of concern when establishing a selective breeding program for such species because the genetic diversity that is captured in the start-up and initial generations of the program is the basic ingredient for future genetic improvement. The aim of this thesis was to examine methods for capturing and conserving genetic diversity in mass spawning Barramundi (Lates calcarifer), when constructing a base population for a long-term selective breeding program for the species.

The results suggest that a mass spawning group of at least 30 Barramundi individuals is required to achieve a high participation rate of breeders and to limit the loss of genetic variation transferred to the offspring. Options for selecting candidates to compose a founding population were explored, and recommendations made to promote the longevity and impact of a selective breeding program for Barramundi.

Barramundi is naturally a mass spawning species, which can be induced to spawn in captivity under conditions that attempt to replicate the natural environment. The Australian Barramundi industry has on hand a large number of mature broodstock that are currently supplying the grow-out market, however, before selective breeding programs can begin, it is important to assess the levels of genetic diversity and relatedness of current captive broodstock populations.

Mass spawning hatchery practices using small broodstock populations, in addition to the cannibalistic nature of some fish species, contribute to a reduction of genetic diversity from parent to offspring and throughout the juvenile grow-out stages. This is of concern when establishing a selective breeding program for such species because the genetic diversity that is captured in the start-up and initial generations of the program is the basic ingredient for future genetic improvement. The aim of this thesis was to examine methods for capturing and conserving genetic diversity in mass spawning Barramundi (Lates calcarifer), when constructing a base population for a long-term selective breeding program for the species.

The results suggest that a mass spawning group of at least 30 Barramundi individuals is required to achieve a high participation rate of breeders and to limit the loss of genetic variation transferred to the offspring. Options for selecting candidates to compose a founding population were explored, and recommendations made to promote the longevity and impact of a selective breeding program for Barramundi.

Barramundi is naturally a mass spawning species, which can be induced to spawn in captivity under conditions that attempt to replicate the natural environment. The Australian Barramundi industry has on hand a large number of mature broodstock that are currently supplying the grow-out market, however, before selective breeding programs can begin, it is important to assess the levels of genetic diversity and relatedness of current captive broodstock populations.

Mass spawning hatchery practices using small broodstock populations, in addition to the cannibalistic nature of some fish species, contribute to a reduction of genetic diversity from parent to offspring and throughout the juvenile grow-out stages. This is of concern when establishing a selective breeding program for such species because the genetic diversity that is captured in the start-up and initial generations of the program is the basic ingredient for future genetic improvement. The aim of this thesis was to examine methods for capturing and conserving genetic diversity in mass spawning Barramundi (Lates calcarifer), when constructing a base population for a long-term selective breeding program for the species.

The results suggest that a mass spawning group of at least 30 Barramundi individuals is required to achieve a high participation rate of breeders and to limit the loss of genetic variation transferred to the offspring. Options for selecting candidates to compose a founding population were explored, and recommendations made to promote the longevity and impact of a selective breeding program for Barramundi.

Barramundi is naturally a mass spawning species, which can be induced to spawn in captivity under conditions that attempt to replicate the natural environment. The Australian Barramundi industry has on hand a large number of mature broodstock that are currently supplying the grow-out market, however, before selective breeding programs can begin, it is important to assess the levels of genetic diversity and relatedness of current captive broodstock populations.

Mass spawning hatchery practices using small broodstock populations, in addition to the cannibalistic nature of some fish species, contribute to a reduction of genetic diversity from parent to offspring and throughout the juvenile grow-out stages. This is of concern when establishing a selective breeding program for such species because the genetic diversity that is captured in the start-up and initial generations of the program is the basic ingredient for future genetic improvement. The aim of this thesis was to examine methods for capturing and conserving genetic diversity in mass spawning Barramundi (Lates calcarifer), when constructing a base population for a long-term selective breeding program for the species.

The results suggest that a mass spawning group of at least 30 Barramundi individuals is required to achieve a high participation rate of breeders and to limit the loss of genetic variation transferred to the offspring. Options for selecting candidates to compose a founding population were explored, and recommendations made to promote the longevity and impact of a selective breeding program for Barramundi.

Barramundi is naturally a mass spawning species, which can be induced to spawn in captivity under conditions that attempt to replicate the natural environment. The Australian Barramundi industry has on hand a large number of mature broodstock that are currently supplying the grow-out market, however, before selective breeding programs can begin, it is important to assess the levels of genetic diversity and relatedness of current captive broodstock populations.

Mass spawning hatchery practices using small broodstock populations, in addition to the cannibalistic nature of some fish species, contribute to a reduction of genetic diversity from parent to offspring and throughout the juvenile grow-out stages. This is of concern when establishing a selective breeding program for such species because the genetic diversity that is captured in the start-up and initial generations of the program is the basic ingredient for future genetic improvement. The aim of this thesis was to examine methods for capturing and conserving genetic diversity in mass spawning Barramundi (Lates calcarifer), when constructing a base population for a long-term selective breeding program for the species.

The results suggest that a mass spawning group of at least 30 Barramundi individuals is required to achieve a high participation rate of breeders and to limit the loss of genetic variation transferred to the offspring. Options for selecting candidates to compose a founding population were explored, and recommendations made to promote the longevity and impact of a selective breeding program for Barramundi.

Barramundi is naturally a mass spawning species, which can be induced to spawn in captivity under conditions that attempt to replicate the natural environment. The Australian Barramundi industry has on hand a large number of mature broodstock that are currently supplying the grow-out market, however, before selective breeding programs can begin, it is important to assess the levels of genetic diversity and relatedness of current captive broodstock populations.

Mass spawning hatchery practices using small broodstock populations, in addition to the cannibalistic nature of some fish species, contribute to a reduction of genetic diversity from parent to offspring and throughout the juvenile grow-out stages. This is of concern when establishing a selective breeding program for such species because the genetic diversity that is captured in the start-up and initial generations of the program is the basic ingredient for future genetic improvement. The aim of this thesis was to examine methods for capturing and conserving genetic diversity in mass spawning Barramundi (Lates calcarifer), when constructing a base population for a long-term selective breeding program for the species.

The results suggest that a mass spawning group of at least 30 Barramundi individuals is required to achieve a high participation rate of breeders and to limit the loss of genetic variation transferred to the offspring. Options for selecting candidates to compose a founding population were explored, and recommendations made to promote the longevity and impact of a selective breeding program for Barramundi.

Barramundi is naturally a mass spawning species, which can be induced to spawn in captivity under conditions that attempt to replicate the natural environment. The Australian Barramundi industry has on hand a large number of mature broodstock that are currently supplying the grow-out market, however, before selective breeding programs can begin, it is important to assess the levels of genetic diversity and relatedness of current captive broodstock populations.

Mass spawning hatchery practices using small broodstock populations, in addition to the cannibalistic nature of some fish species, contribute to a reduction of genetic diversity from parent to offspring and throughout the juvenile grow-out stages. This is of concern when establishing a selective breeding program for such species because the genetic diversity that is captured in the start-up and initial generations of the program is the basic ingredient for future genetic improvement. The aim of this thesis was to examine methods for capturing and conserving genetic diversity in mass spawning Barramundi (Lates calcarifer), when constructing a base population for a long-term selective breeding program for the species.

The results suggest that a mass spawning group of at least 30 Barramundi individuals is required to achieve a high participation rate of breeders and to limit the loss of genetic variation transferred to the offspring. Options for selecting candidates to compose a founding population were explored, and recommendations made to promote the longevity and impact of a selective breeding program for Barramundi.

Barramundi is naturally a mass spawning species, which can be induced to spawn in captivity under conditions that attempt to replicate the natural environment. The Australian Barramundi industry has on hand a large number of mature broodstock that are currently supplying the grow-out market, however, before selective breeding programs can begin, it is important to assess the levels of genetic diversity and relatedness of current captive broodstock populations.

Mass spawning hatchery practices using small broodstock populations, in addition to the cannibalistic nature of some fish species, contribute to a reduction of genetic diversity from parent to offspring and throughout the juvenile grow-out stages. This is of concern when establishing a selective breeding program for such species because the genetic diversity that is captured in the start-up and initial generations of the program is the basic ingredient for future genetic improvement. The aim of this thesis was to examine methods for capturing and conserving genetic diversity in mass spawning Barramundi (Lates calcarifer), when constructing a base population for a long-term selective breeding program for the species.

The results suggest that a mass spawning group of at least 30 Barramundi individuals is required to achieve a high participation rate of breeders and to limit the loss of genetic variation transferred to the offspring. Options for selecting candidates to compose a founding population were explored, and recommendations made to promote the longevity and impact of a selective breeding program for Barramundi.

Barramundi is naturally a mass spawning species, which can be induced to spawn in captivity under conditions that attempt to replicate the natural environment. The Australian Barramundi industry has on hand a large number of mature broodstock that are currently supplying the grow-out market, however, before selective breeding programs can begin, it is important to assess the levels of genetic diversity and relatedness of current captive broodstock populations.

Mass spawning hatchery practices using small broodstock populations, in addition to the cannibalistic nature of some fish species, contribute to a reduction of genetic diversity from parent to offspring and throughout the juvenile grow-out stages. This is of concern when establishing a selective breeding program for such species because the genetic diversity that is captured in the start-up and initial generations of the program is the basic ingredient for future genetic improvement. The aim of this thesis was to examine methods for capturing and conserving genetic diversity in mass spawning Barramundi (Lates calcarifer), when constructing a base population for a long-term selective breeding program for the species.

The results suggest that a mass spawning group of at least 30 Barramundi individuals is required to achieve a high participation rate of breeders and to limit the loss of genetic variation transferred to the offspring. Options for selecting candidates to compose a founding population were explored, and recommendations made to promote the longevity and impact of a selective breeding program for Barramundi.

Barramundi is naturally a mass spawning species, which can be induced to spawn in captivity under conditions that attempt to replicate the natural environment. The Australian Barramundi industry has on hand a large number of mature broodstock that are currently supplying the grow-out market, however, before selective breeding programs can begin, it is important to assess the levels of genetic diversity and relatedness of current captive broodstock populations.

Mass spawning hatchery practices using small broodstock populations, in addition to the cannibalistic nature of some fish species, contribute to a reduction of genetic diversity from parent to offspring and throughout the juvenile grow-out stages. This is of concern when establishing a selective breeding program for such species because the genetic diversity that is captured in the start-up and initial generations of the program is the basic ingredient for future genetic improvement. The aim of this thesis was to examine methods for capturing and conserving genetic diversity in mass spawning Barramundi (Lates calcarifer), when constructing a base population for a long-term selective breeding program for the species.

The results suggest that a mass spawning group of at least 30 Barramundi individuals is required to achieve a high participation rate of breeders and to limit the loss of genetic variation transferred to the offspring. Options for selecting candidates to compose a founding population were explored, and recommendations made to promote the longevity and impact of a selective breeding program for Barramundi.

Barramundi is naturally a mass spawning species, which can be induced to spawn in captivity under conditions that attempt to replicate the natural environment. The Australian Barramundi industry has on hand a large number of mature broodstock that are currently supplying the grow-out market, however, before selective breeding programs can begin, it is important to assess the levels of genetic diversity and relatedness of current captive broodstock populations.

Mass spawning hatchery practices using small broodstock populations, in addition to the cannibalistic nature of some fish species, contribute to a reduction of genetic diversity from parent to offspring and throughout the juvenile grow-out stages. This is of concern when establishing a selective breeding program for such species because the genetic diversity that is captured in the start-up and initial generations of the program is the basic ingredient for future genetic improvement. The aim of this thesis was to examine methods for capturing and conserving genetic diversity in mass spawning Barramundi (Lates calcarifer), when constructing a base population for a long-term selective breeding program for the species.

The results suggest that a mass spawning group of at least 30 Barramundi individuals is required to achieve a high participation rate of breeders and to limit the loss of genetic variation transferred to the offspring. Options for selecting candidates to compose a founding population were explored, and recommendations made to promote the longevity and impact of a selective breeding program for Barramundi.

Barramundi is naturally a mass spawning species, which can be induced to spawn in captivity under conditions that attempt to replicate the natural environment. The Australian Barramundi industry has on hand a large number of mature broodstock that are currently supplying the grow-out market, however, before selective breeding programs can begin, it is important to assess the levels of genetic diversity and relatedness of current captive broodstock populations.

Mass spawning hatchery practices using small broodstock populations, in addition to the cannibalistic nature of some fish species, contribute to a reduction of genetic diversity from parent to offspring and throughout the juvenile grow-out stages. This is of concern when establishing a selective breeding program for such species because the genetic diversity that is captured in the start-up and initial generations of the program is the basic ingredient for future genetic improvement. The aim of this thesis was to examine methods for capturing and conserving genetic diversity in mass spawning Barramundi (Lates calcarifer), when constructing a base population for a long-term selective breeding program for the species.

The results suggest that a mass spawning group of at least 30 Barramundi individuals is required to achieve a high participation rate of breeders and to limit the loss of genetic variation transferred to the offspring. Options for selecting candidates to compose a founding population were explored, and recommendations made to promote the longevity and impact of a selective breeding program for Barramundi.

Barramundi is naturally a mass spawning species, which can be induced to spawn in captivity under conditions that attempt to replicate the natural environment. The Australian Barramundi industry has on hand a large number of mature broodstock that are currently supplying the grow-out market, however, before selective breeding programs can begin, it is important to assess the levels of genetic diversity and relatedness of current captive broodstock populations.

Mass spawning hatchery practices using small broodstock populations, in addition to the cannibalistic nature of some fish species, contribute to a reduction of genetic diversity from parent to offspring and throughout the juvenile grow-out stages. This is of concern when establishing a selective breeding program for such species because the genetic diversity that is captured in the start-up and initial generations of the program is the basic ingredient for future genetic improvement. The aim of this thesis was to examine methods for capturing and conserving genetic diversity in mass spawning Barramundi (Lates calcarifer), when constructing a base population for a long-term selective breeding program for the species.

The results suggest that a mass spawning group of at least 30 Barramundi individuals is required to achieve a high participation rate of breeders and to limit the loss of genetic variation transferred to the offspring. Options for selecting candidates to compose a founding population were explored, and recommendations made to promote the longevity and impact of a selective breeding program for Barramundi.

Barramundi is naturally a mass spawning species, which can be induced to spawn in captivity under conditions that attempt to replicate the natural environment. The Australian Barramundi industry has on hand a large number of mature broodstock that are currently supplying the grow-out market, however, before selective breeding programs can begin, it is important to assess the levels of genetic diversity and relatedness of current captive broodstock populations.

Mass spawning hatchery practices using small broodstock populations, in addition to the cannibalistic nature of some fish species, contribute to a reduction of genetic diversity from parent to offspring and throughout the juvenile grow-out stages. This is of concern when establishing a selective breeding program for such species because the genetic diversity that is captured in the start-up and initial generations of the program is the basic ingredient for future genetic improvement. The aim of this thesis was to examine methods for capturing and conserving genetic diversity in mass spawning Barramundi (Lates calcarifer), when constructing a base population for a long-term selective breeding program for the species.

The results suggest that a mass spawning group of at least 30 Barramundi individuals is required to achieve a high participation rate of breeders and to limit the loss of genetic variation transferred to the offspring. Options for selecting candidates to compose a founding population were explored, and recommendations made to promote the longevity and impact of a selective breeding program for Barramundi.

Barramundi is naturally a mass spawning species, which can be induced to spawn in captivity under conditions that attempt to replicate the natural environment. The Australian Barramundi industry has on hand a large number of mature broodstock that are currently supplying the grow-out market, however, before selective breeding programs can begin, it is important to assess the levels of genetic diversity and relatedness of current captive broodstock populations.

Mass spawning hatchery practices using small broodstock populations, in addition to the cannibalistic nature of some fish species, contribute to a reduction of genetic diversity from parent to offspring and throughout the juvenile grow-out stages. This is of concern when establishing a selective breeding program for such species because the genetic diversity that is captured in the start-up and initial generations of the program is the basic ingredient for future genetic improvement. The aim of this thesis was to examine methods for capturing and conserving genetic diversity in mass spawning Barramundi (Lates calcarifer), when constructing a base population for a long-term selective breeding program for the species.

The results suggest that a mass spawning group of at least 30 Barramundi individuals is required to achieve a high participation rate of breeders and to limit the loss of genetic variation transferred to the offspring. Options for selecting candidates to compose a founding population were explored, and recommendations made to promote the longevity and impact of a selective breeding program for Barramundi.

Barramundi is naturally a mass spawning species, which can be induced to spawn in captivity under conditions that attempt to replicate the natural environment. The Australian Barramundi industry has on hand a large number of mature broodstock that are currently supplying the grow-out market, however, before selective breeding programs can begin, it is important to assess the levels of genetic diversity and relatedness of current captive broodstock populations.

Mass spawning hatchery practices using small broodstock populations, in addition to the cannibalistic nature of some fish species, contribute to a reduction of genetic diversity from parent to offspring and throughout the juvenile grow-out stages. This is of concern when establishing a selective breeding program for such species because the genetic diversity that is captured in the start-up and initial generations of the program is the basic ingredient for future genetic improvement. The aim of this thesis was to examine methods for capturing and conserving genetic diversity in mass spawning Barramundi (Lates calcarifer), when constructing a base population for a long-term selective breeding program for the species.

The results suggest that a mass spawning group of at least 30 Barramundi individuals is required to achieve a high participation rate of breeders and to limit the loss of genetic variation transferred to the offspring. Options for selecting candidates to compose a founding population were explored, and recommendations made to promote the longevity and impact of a selective breeding program for Barramundi.

Barramundi is naturally a mass spawning species, which can be induced to spawn in captivity under conditions that attempt to replicate the natural environment. The Australian Barramundi industry has on hand a large number of mature broodstock that are currently supplying the grow-out market, however, before selective breeding programs can begin, it is important to assess the levels of genetic diversity and relatedness of current captive broodstock populations.

Mass spawning hatchery practices using small broodstock populations, in addition to the cannibalistic nature of some fish species, contribute to a reduction of genetic diversity from parent to offspring and throughout the juvenile grow-out stages. This is of concern when establishing a selective breeding program for such species because the genetic diversity that is captured in the start-up and initial generations of the program is the basic ingredient for future genetic improvement. The aim of this thesis was to examine methods for capturing and conserving genetic diversity in mass spawning Barramundi (Lates calcarifer), when constructing a base population for a long-term selective breeding program for the species.

The results suggest that a mass spawning group of at least 30 Barramundi individuals is required to achieve a high participation rate of breeders and to limit the loss of genetic variation transferred to the offspring. Options for selecting candidates to compose a founding population were explored, and recommendations made to promote the longevity and impact of a selective breeding program for Barramundi.

Barramundi is naturally a mass spawning species, which can be induced to spawn in captivity under conditions that attempt to replicate the natural environment. The Australian Barramundi industry has on hand a large number of mature broodstock that are currently supplying the grow-out market, however, before selective breeding programs can begin, it is important to assess the levels of genetic diversity and relatedness of current captive broodstock populations.

Mass spawning hatchery practices using small broodstock populations, in addition to the cannibalistic nature of some fish species, contribute to a reduction of genetic diversity from parent to offspring and throughout the juvenile grow-out stages. This is of concern when establishing a selective breeding program for such species because the genetic diversity that is captured in the start-up and initial generations of the program is the basic ingredient for future genetic improvement. The aim of this thesis was to examine methods for capturing and conserving genetic diversity in mass spawning Barramundi (Lates calcarifer), when constructing a base population for a long-term selective breeding program for the species.

The results suggest that a mass spawning group of at least 30 Barramundi individuals is required to achieve a high participation rate of breeders and to limit the loss of genetic variation transferred to the offspring. Options for selecting candidates to compose a founding population were explored, and recommendations made to promote the longevity and impact of a selective breeding program for Barramundi.

Barramundi is naturally a mass spawning species, which can be induced to spawn in captivity under conditions that attempt to replicate the natural environment. The Australian Barramundi industry has on hand a large number of mature broodstock that are currently supplying the grow-out market, however, before selective breeding programs can begin, it is important to assess the levels of genetic diversity and relatedness of current captive broodstock populations.

Mass spawning hatchery practices using small broodstock populations, in addition to the cannibalistic nature of some fish species, contribute to a reduction of genetic diversity from parent to offspring and throughout the juvenile grow-out stages. This is of concern when establishing a selective breeding program for such species because the genetic diversity that is captured in the start-up and initial generations of the program is the basic ingredient for future genetic improvement. The aim of this thesis was to examine methods for capturing and conserving genetic diversity in mass spawning Barramundi (Lates calcarifer), when constructing a base population for a long-term selective breeding program for the species.

The results suggest that a mass spawning group of at least 30 Barramundi individuals is required to achieve a high participation rate of breeders and to limit the loss of genetic variation transferred to the offspring. Options for selecting candidates to compose a founding population were explored, and recommendations made to promote the longevity and impact of a selective breeding program for Barramundi.

Barramundi is naturally a mass spawning species, which can be induced to spawn in captivity under conditions that attempt to replicate the natural environment. The Australian Barramundi industry has on hand a large number of mature broodstock that are currently supplying the grow-out market, however, before selective breeding programs can begin, it is important to assess the levels of genetic diversity and relatedness of current captive broodstock populations.

Mass spawning hatchery practices using small broodstock populations, in addition to the cannibalistic nature of some fish species, contribute to a reduction of genetic diversity from parent to offspring and throughout the juvenile grow-out stages. This is of concern when establishing a selective breeding program for such species because the genetic diversity that is captured in the start-up and initial generations of the program is the basic ingredient for future genetic improvement. The aim of this thesis was to examine methods for capturing and conserving genetic diversity in mass spawning Barramundi (Lates calcarifer), when constructing a base population for a long-term selective breeding program for the species.

The results suggest that a mass spawning group of at least 30 Barramundi individuals is required to achieve a high participation rate of breeders and to limit the loss of genetic variation transferred to the offspring. Options for selecting candidates to compose a founding population were explored, and recommendations made to promote the longevity and impact of a selective breeding program for Barramundi.

Barramundi is naturally a mass spawning species, which can be induced to spawn in captivity under conditions that attempt to replicate the natural environment. The Australian Barramundi industry has on hand a large number of mature broodstock that are currently supplying the grow-out market, however, before selective breeding programs can begin, it is important to assess the levels of genetic diversity and relatedness of current captive broodstock populations.

Mass spawning hatchery practices using small broodstock populations, in addition to the cannibalistic nature of some fish species, contribute to a reduction of genetic diversity from parent to offspring and throughout the juvenile grow-out stages. This is of concern when establishing a selective breeding program for such species because the genetic diversity that is captured in the start-up and initial generations of the program is the basic ingredient for future genetic improvement. The aim of this thesis was to examine methods for capturing and conserving genetic diversity in mass spawning Barramundi (Lates calcarifer), when constructing a base population for a long-term selective breeding program for the species.

The results suggest that a mass spawning group of at least 30 Barramundi individuals is required to achieve a high participation rate of breeders and to limit the loss of genetic variation transferred to the offspring. Options for selecting candidates to compose a founding population were explored, and recommendations made to promote the longevity and impact of a selective breeding program for Barramundi.

Barramundi is naturally a mass spawning species, which can be induced to spawn in captivity under conditions that attempt to replicate the natural environment. The Australian Barramundi industry has on hand a large number of mature broodstock that are currently supplying the grow-out market, however, before selective breeding programs can begin, it is important to assess the levels of genetic diversity and relatedness of current captive broodstock populations.

Mass spawning hatchery practices using small broodstock populations, in addition to the cannibalistic nature of some fish species, contribute to a reduction of genetic diversity from parent to offspring and throughout the juvenile grow-out stages. This is of concern when establishing a selective breeding program for such species because the genetic diversity that is captured in the start-up and initial generations of the program is the basic ingredient for future genetic improvement. The aim of this thesis was to examine methods for capturing and conserving genetic diversity in mass spawning Barramundi (Lates calcarifer), when constructing a base population for a long-term selective breeding program for the species.

The results suggest that a mass spawning group of at least 30 Barramundi individuals is required to achieve a high participation rate of breeders and to limit the loss of genetic variation transferred to the offspring. Options for selecting candidates to compose a founding population were explored, and recommendations made to promote the longevity and impact of a selective breeding program for Barramundi.

Barramundi is naturally a mass spawning species, which can be induced to spawn in captivity under conditions that attempt to replicate the natural environment. The Australian Barramundi industry has on hand a large number of mature broodstock that are currently supplying the grow-out market, however, before selective breeding programs can begin, it is important to assess the levels of genetic diversity and relatedness of current captive broodstock populations.

Mass spawning hatchery practices using small broodstock populations, in addition to the cannibalistic nature of some fish species, contribute to a reduction of genetic diversity from parent to offspring and throughout the juvenile grow-out stages. This is of concern when establishing a selective breeding program for such species because the genetic diversity that is captured in the start-up and initial generations of the program is the basic ingredient for future genetic improvement. The aim of this thesis was to examine methods for capturing and conserving genetic diversity in mass spawning Barramundi (Lates calcarifer), when constructing a base population for a long-term selective breeding program for the species.

The results suggest that a mass spawning group of at least 30 Barramundi individuals is required to achieve a high participation rate of breeders and to limit the loss of genetic variation transferred to the offspring. Options for selecting candidates to compose a founding population were explored, and recommendations made to promote the longevity and impact of a selective breeding program for Barramundi.

Barramundi is naturally a mass spawning species, which can be induced to spawn in captivity under conditions that attempt to replicate the natural environment. The Australian Barramundi industry has on hand a large number of mature broodstock that are currently supplying the grow-out market, however, before selective breeding programs can begin, it is important to assess the levels of genetic diversity and relatedness of current captive broodstock populations.

Mass spawning hatchery practices using small broodstock populations, in addition to the cannibalistic nature of some fish species, contribute to a reduction of genetic diversity from parent to offspring and throughout the juvenile grow-out stages. This is of concern when establishing a selective breeding program for such species because the genetic diversity that is captured in the start-up and initial generations of the program is the basic ingredient for future genetic improvement. The aim of this thesis was to examine methods for capturing and conserving genetic diversity in mass spawning Barramundi (Lates calcarifer), when constructing a base population for a long-term selective breeding program for the species.

The results suggest that a mass spawning group of at least 30 Barramundi individuals is required to achieve a high participation rate of breeders and to limit the loss of genetic variation transferred to the offspring. Options for selecting candidates to compose a founding population were explored, and recommendations made to promote the longevity and impact of a selective breeding program for Barramundi.

Barramundi is naturally a mass spawning species, which can be induced to spawn in captivity under conditions that attempt to replicate the natural environment. The Australian Barramundi industry has on hand a large number of mature broodstock that are currently supplying the grow-out market, however, before selective breeding programs can begin, it is important to assess the levels of genetic diversity and relatedness of current captive broodstock populations.

Mass spawning hatchery practices using small broodstock populations, in addition to the cannibalistic nature of some fish species, contribute to a reduction of genetic diversity from parent to offspring and throughout the juvenile grow-out stages. This is of concern when establishing a selective breeding program for such species because the genetic diversity that is captured in the start-up and initial generations of the program is the basic ingredient for future genetic improvement. The aim of this thesis was to examine methods for capturing and conserving genetic diversity in mass spawning Barramundi (Lates calcarifer), when constructing a base population for a long-term selective breeding program for the species.

The results suggest that a mass spawning group of at least 30 Barramundi individuals is required to achieve a high participation rate of breeders and to limit the loss of genetic variation transferred to the offspring. Options for selecting candidates to compose a founding population were explored, and recommendations made to promote the longevity and impact of a selective breeding program for Barramundi.

Barramundi is naturally a mass spawning species, which can be induced to spawn in captivity under conditions that attempt to replicate the natural environment. The Australian Barramundi industry has on hand a large number of mature broodstock that are currently supplying the grow-out market, however, before selective breeding programs can begin, it is important to assess the levels of genetic diversity and relatedness of current captive broodstock populations.

Mass spawning hatchery practices using small broodstock populations, in addition to the cannibalistic nature of some fish species, contribute to a reduction of genetic diversity from parent to offspring and throughout the juvenile grow-out stages. This is of concern when establishing a selective breeding program for such species because the genetic diversity that is captured in the start-up and initial generations of the program is the basic ingredient for future genetic improvement. The aim of this thesis was to examine methods for capturing and conserving genetic diversity in mass spawning Barramundi (Lates calcarifer), when constructing a base population for a long-term selective breeding program for the species.

The results suggest that a mass spawning group of at least 30 Barramundi individuals is required to achieve a high participation rate of breeders and to limit the loss of genetic variation transferred to the offspring. Options for selecting candidates to compose a founding population were explored, and recommendations made to promote the longevity and impact of a selective breeding program for Barramundi.

Barramundi is naturally a mass spawning species, which can be induced to spawn in captivity under conditions that attempt to replicate the natural environment. The Australian Barramundi industry has on hand a large number of mature broodstock that are currently supplying the grow-out market, however, before selective breeding programs can begin, it is important to assess the levels of genetic diversity and relatedness of current captive broodstock populations.

Mass spawning hatchery practices using small broodstock populations, in addition to the cannibalistic nature of some fish species, contribute to a reduction of genetic diversity from parent to offspring and throughout the juvenile grow-out stages. This is of concern when establishing a selective breeding program for such species because the genetic diversity that is captured in the start-up and initial generations of the program is the basic ingredient for future genetic improvement. The aim of this thesis was to examine methods for capturing and conserving genetic diversity in mass spawning Barramundi (Lates calcarifer), when constructing a base population for a long-term selective breeding program for the species.

The results suggest that a mass spawning group of at least 30 Barramundi individuals is required to achieve a high participation rate of breeders and to limit the loss of genetic variation transferred to the offspring. Options for selecting candidates to compose a founding population were explored, and recommendations made to promote the longevity and impact of a selective breeding program for Barramundi.

Barramundi is naturally a mass spawning species, which can be induced to spawn in captivity under conditions that attempt to replicate the natural environment. The Australian Barramundi industry has on hand a large number of mature broodstock that are currently supplying the grow-out market, however, before selective breeding programs can begin, it is important to assess the levels of genetic diversity and relatedness of current captive broodstock populations.

Mass spawning hatchery practices using small broodstock populations, in addition to the cannibalistic nature of some fish species, contribute to a reduction of genetic diversity from parent to offspring and throughout the juvenile grow-out stages. This is of concern when establishing a selective breeding program for such species because the genetic diversity that is captured in the start-up and initial generations of the program is the basic ingredient for future genetic improvement. The aim of this thesis was to examine methods for capturing and conserving genetic diversity in mass spawning Barramundi (Lates calcarifer), when constructing a base population for a long-term selective breeding program for the species.

The results suggest that a mass spawning group of at least 30 Barramundi individuals is required to achieve a high participation rate of breeders and to limit the loss of genetic variation transferred to the offspring. Options for selecting candidates to compose a founding population were explored, and recommendations made to promote the longevity and impact of a selective breeding program for Barramundi.

Barramundi is naturally a mass spawning species, which can be induced to spawn in captivity under conditions that attempt to replicate the natural environment. The Australian Barramundi industry has on hand a large number of mature broodstock that are currently supplying the grow-out market, however, before selective breeding programs can begin, it is important to assess the levels of genetic diversity and relatedness of current captive broodstock populations.

Mass spawning hatchery practices using small broodstock populations, in addition to the cannibalistic nature of some fish species, contribute to a reduction of genetic diversity from parent to offspring and throughout the juvenile grow-out stages. This is of concern when establishing a selective breeding program for such species because the genetic diversity that is captured in the start-up and initial generations of the program is the basic ingredient for future genetic improvement. The aim of this thesis was to examine methods for capturing and conserving genetic diversity in mass spawning Barramundi (Lates calcarifer), when constructing a base population for a long-term selective breeding program for the species.

The results suggest that a mass spawning group of at least 30 Barramundi individuals is required to achieve a high participation rate of breeders and to limit the loss of genetic variation transferred to the offspring. Options for selecting candidates to compose a founding population were explored, and recommendations made to promote the longevity and impact of a selective breeding program for Barramundi.

Barramundi is naturally a mass spawning species, which can be induced to spawn in captivity under conditions that attempt to replicate the natural environment. The Australian Barramundi industry has on hand a large number of mature broodstock that are currently supplying the grow-out market, however, before selective breeding programs can begin, it is important to assess the levels of genetic diversity and relatedness of current captive broodstock populations.

Mass spawning hatchery practices using small broodstock populations, in addition to the cannibalistic nature of some fish species, contribute to a reduction of genetic diversity from parent to offspring and throughout the juvenile grow-out stages. This is of concern when establishing a selective breeding program for such species because the genetic diversity that is captured in the start-up and initial generations of the program is the basic ingredient for future genetic improvement. The aim of this thesis was to examine methods for capturing and conserving genetic diversity in mass spawning Barramundi (Lates calcarifer), when constructing a base population for a long-term selective breeding program for the species.

The results suggest that a mass spawning group of at least 30 Barramundi individuals is required to achieve a high participation rate of breeders and to limit the loss of genetic variation transferred to the offspring. Options for selecting candidates to compose a founding population were explored, and recommendations made to promote the longevity and impact of a selective breeding program for Barramundi.

Barramundi is naturally a mass spawning species, which can be induced to spawn in captivity under conditions that attempt to replicate the natural environment. The Australian Barramundi industry has on hand a large number of mature broodstock that are currently supplying the grow-out market, however, before selective breeding programs can begin, it is important to assess the levels of genetic diversity and relatedness of current captive broodstock populations.

Mass spawning hatchery practices using small broodstock populations, in addition to the cannibalistic nature of some fish species, contribute to a reduction of genetic diversity from parent to offspring and throughout the juvenile grow-out stages. This is of concern when establishing a selective breeding program for such species because the genetic diversity that is captured in the start-up and initial generations of the program is the basic ingredient for future genetic improvement. The aim of this thesis was to examine methods for capturing and conserving genetic diversity in mass spawning Barramundi (Lates calcarifer), when constructing a base population for a long-term selective breeding program for the species.

The results suggest that a mass spawning group of at least 30 Barramundi individuals is required to achieve a high participation rate of breeders and to limit the loss of genetic variation transferred to the offspring. Options for selecting candidates to compose a founding population were explored, and recommendations made to promote the longevity and impact of a selective breeding program for Barramundi.

Barramundi is naturally a mass spawning species, which can be induced to spawn in captivity under conditions that attempt to replicate the natural environment. The Australian Barramundi industry has on hand a large number of mature broodstock that are currently supplying the grow-out market, however, before selective breeding programs can begin, it is important to assess the levels of genetic diversity and relatedness of current captive broodstock populations.

Mass spawning hatchery practices using small broodstock populations, in addition to the cannibalistic nature of some fish species, contribute to a reduction of genetic diversity from parent to offspring and throughout the juvenile grow-out stages. This is of concern when establishing a selective breeding program for such species because the genetic diversity that is captured in the start-up and initial generations of the program is the basic ingredient for future genetic improvement. The aim of this thesis was to examine methods for capturing and conserving genetic diversity in mass spawning Barramundi (Lates calcarifer), when constructing a base population for a long-term selective breeding program for the species.

The results suggest that a mass spawning group of at least 30 Barramundi individuals is required to achieve a high participation rate of breeders and to limit the loss of genetic variation transferred to the offspring. Options for selecting candidates to compose a founding population were explored, and recommendations made to promote the longevity and impact of a selective breeding program for Barramundi.

Barramundi is naturally a mass spawning species, which can be induced to spawn in captivity under conditions that attempt to replicate the natural environment. The Australian Barramundi industry has on hand a large number of mature broodstock that are currently supplying the grow-out market, however, before selective breeding programs can begin, it is important to assess the levels of genetic diversity and relatedness of current captive broodstock populations.

Mass spawning hatchery practices using small broodstock populations, in addition to the cannibalistic nature of some fish species, contribute to a reduction of genetic diversity from parent to offspring and throughout the juvenile grow-out stages. This is of concern when establishing a selective breeding program for such species because the genetic diversity that is captured in the start-up and initial generations of the program is the basic ingredient for future genetic improvement. The aim of this thesis was to examine methods for capturing and conserving genetic diversity in mass spawning Barramundi (Lates calcarifer), when constructing a base population for a long-term selective breeding program for the species.

The results suggest that a mass spawning group of at least 30 Barramundi individuals is required to achieve a high participation rate of breeders and to limit the loss of genetic variation transferred to the offspring. Options for selecting candidates to compose a founding population were explored, and recommendations made to promote the longevity and impact of a selective breeding program for Barramundi.

Barramundi is naturally a mass spawning species, which can be induced to spawn in captivity under conditions that attempt to replicate the natural environment. The Australian Barramundi industry has on hand a large number of mature broodstock that are currently supplying the grow-out market, however, before selective breeding programs can begin, it is important to assess the levels of genetic diversity and relatedness of current captive broodstock populations.

Mass spawning hatchery practices using small broodstock populations, in addition to the cannibalistic nature of some fish species, contribute to a reduction of genetic diversity from parent to offspring and throughout the juvenile grow-out stages. This is of concern when establishing a selective breeding program for such species because the genetic diversity that is captured in the start-up and initial generations of the program is the basic ingredient for future genetic improvement. The aim of this thesis was to examine methods for capturing and conserving genetic diversity in mass spawning Barramundi (Lates calcarifer), when constructing a base population for a long-term selective breeding program for the species.

The results suggest that a mass spawning group of at least 30 Barramundi individuals is required to achieve a high participation rate of breeders and to limit the loss of genetic variation transferred to the offspring. Options for selecting candidates to compose a founding population were explored, and recommendations made to promote the longevity and impact of a selective breeding program for Barramundi.

Barramundi is naturally a mass spawning species, which can be induced to spawn in captivity under conditions that attempt to replicate the natural environment. The Australian Barramundi industry has on hand a large number of mature broodstock that are currently supplying the grow-out market, however, before selective breeding programs can begin, it is important to assess the levels of genetic diversity and relatedness of current captive broodstock populations.

Mass spawning hatchery practices using small broodstock populations, in addition to the cannibalistic nature of some fish species, contribute to a reduction of genetic diversity from parent to offspring and throughout the juvenile grow-out stages. This is of concern when establishing a selective breeding program for such species because the genetic diversity that is captured in the start-up and initial generations of the program is the basic ingredient for future genetic improvement. The aim of this thesis was to examine methods for capturing and conserving genetic diversity in mass spawning Barramundi (Lates calcarifer), when constructing a base population for a long-term selective breeding program for the species.

The results suggest that a mass spawning group of at least 30 Barramundi individuals is required to achieve a high participation rate of breeders and to limit the loss of genetic variation transferred to the offspring. Options for selecting candidates to compose a founding population were explored, and recommendations made to promote the longevity and impact of a selective breeding program for Barramundi.

Barramundi is naturally a mass spawning species, which can be induced to spawn in captivity under conditions that attempt to replicate the natural environment. The Australian Barramundi industry has on hand a large number of mature broodstock that are currently supplying the grow-out market, however, before selective breeding programs can begin, it is important to assess the levels of genetic diversity and relatedness of current captive broodstock populations.

Mass spawning hatchery practices using small broodstock populations, in addition to the cannibalistic nature of some fish species, contribute to a reduction of genetic diversity from parent to offspring and throughout the juvenile grow-out stages. This is of concern when establishing a selective breeding program for such species because the genetic diversity that is captured in the start-up and initial generations of the program is the basic ingredient for future genetic improvement. The aim of this thesis was to examine methods for capturing and conserving genetic diversity in mass spawning Barramundi (Lates calcarifer), when constructing a base population for a long-term selective breeding program for the species.

The results suggest that a mass spawning group of at least 30 Barramundi individuals is required to achieve a high participation rate of breeders and to limit the loss of genetic variation transferred to the offspring. Options for selecting candidates to compose a founding population were explored, and recommendations made to promote the longevity and impact of a selective breeding program for Barramundi.

Barramundi is naturally a mass spawning species, which can be induced to spawn in captivity under conditions that attempt to replicate the natural environment. The Australian Barramundi industry has on hand a large number of mature broodstock that are currently supplying the grow-out market, however, before selective breeding programs can begin, it is important to assess the levels of genetic diversity and relatedness of current captive broodstock populations.

Mass spawning hatchery practices using small broodstock populations, in addition to the cannibalistic nature of some fish species, contribute to a reduction of genetic diversity from parent to offspring and throughout the juvenile grow-out stages. This is of concern when establishing a selective breeding program for such species because the genetic diversity that is captured in the start-up and initial generations of the program is the basic ingredient for future genetic improvement. The aim of this thesis was to examine methods for capturing and conserving genetic diversity in mass spawning Barramundi (Lates calcarifer), when constructing a base population for a long-term selective breeding program for the species.

The results suggest that a mass spawning group of at least 30 Barramundi individuals is required to achieve a high participation rate of breeders and to limit the loss of genetic variation transferred to the offspring. Options for selecting candidates to compose a founding population were explored, and recommendations made to promote the longevity and impact of a selective breeding program for Barramundi.

Barramundi is naturally a mass spawning species, which can be induced to spawn in captivity under conditions that attempt to replicate the natural environment. The Australian Barramundi industry has on hand a large number of mature broodstock that are currently supplying the grow-out market, however, before selective breeding programs can begin, it is important to assess the levels of genetic diversity and relatedness of current captive broodstock populations.

Mass spawning hatchery practices using small broodstock populations, in addition to the cannibalistic nature of some fish species, contribute to a reduction of genetic diversity from parent to offspring and throughout the juvenile grow-out stages. This is of concern when establishing a selective breeding program for such species because the genetic diversity that is captured in the start-up and initial generations of the program is the basic ingredient for future genetic improvement. The aim of this thesis was to examine methods for capturing and conserving genetic diversity in mass spawning Barramundi (Lates calcarifer), when constructing a base population for a long-term selective breeding program for the species.

The results suggest that a mass spawning group of at least 30 Barramundi individuals is required to achieve a high participation rate of breeders and to limit the loss of genetic variation transferred to the offspring. Options for selecting candidates to compose a founding population were explored, and recommendations made to promote the longevity and impact of a selective breeding program for Barramundi.

Barramundi is naturally a mass spawning species, which can be induced to spawn in captivity under conditions that attempt to replicate the natural environment. The Australian Barramundi industry has on hand a large number of mature broodstock that are currently supplying the grow-out market, however, before selective breeding programs can begin, it is important to assess the levels of genetic diversity and relatedness of current captive broodstock populations.

Mass spawning hatchery practices using small broodstock populations, in addition to the cannibalistic nature of some fish species, contribute to a reduction of genetic diversity from parent to offspring and throughout the juvenile grow-out stages. This is of concern when establishing a selective breeding program for such species because the genetic diversity that is captured in the start-up and initial generations of the program is the basic ingredient for future genetic improvement. The aim of this thesis was to examine methods for capturing and conserving genetic diversity in mass spawning Barramundi (Lates calcarifer), when constructing a base population for a long-term selective breeding program for the species.

The results suggest that a mass spawning group of at least 30 Barramundi individuals is required to achieve a high participation rate of breeders and to limit the loss of genetic variation transferred to the offspring. Options for selecting candidates to compose a founding population were explored, and recommendations made to promote the longevity and impact of a selective breeding program for Barramundi.

Barramundi is naturally a mass spawning species, which can be induced to spawn in captivity under conditions that attempt to replicate the natural environment. The Australian Barramundi industry has on hand a large number of mature broodstock that are currently supplying the grow-out market, however, before selective breeding programs can begin, it is important to assess the levels of genetic diversity and relatedness of current captive broodstock populations.

Mass spawning hatchery practices using small broodstock populations, in addition to the cannibalistic nature of some fish species, contribute to a reduction of genetic diversity from parent to offspring and throughout the juvenile grow-out stages. This is of concern when establishing a selective breeding program for such species because the genetic diversity that is captured in the start-up and initial generations of the program is the basic ingredient for future genetic improvement. The aim of this thesis was to examine methods for capturing and conserving genetic diversity in mass spawning Barramundi (Lates calcarifer), when constructing a base population for a long-term selective breeding program for the species.

The results suggest that a mass spawning group of at least 30 Barramundi individuals is required to achieve a high participation rate of breeders and to limit the loss of genetic variation transferred to the offspring. Options for selecting candidates to compose a founding population were explored, and recommendations made to promote the longevity and impact of a selective breeding program for Barramundi.

Barramundi is naturally a mass spawning species, which can be induced to spawn in captivity under conditions that attempt to replicate the natural environment. The Australian Barramundi industry has on hand a large number of mature broodstock that are currently supplying the grow-out market, however, before selective breeding programs can begin, it is important to assess the levels of genetic diversity and relatedness of current captive broodstock populations.

Mass spawning hatchery practices using small broodstock populations, in addition to the cannibalistic nature of some fish species, contribute to a reduction of genetic diversity from parent to offspring and throughout the juvenile grow-out stages. This is of concern when establishing a selective breeding program for such species because the genetic diversity that is captured in the start-up and initial generations of the program is the basic ingredient for future genetic improvement. The aim of this thesis was to examine methods for capturing and conserving genetic diversity in mass spawning Barramundi (Lates calcarifer), when constructing a base population for a long-term selective breeding program for the species.

The results suggest that a mass spawning group of at least 30 Barramundi individuals is required to achieve a high participation rate of breeders and to limit the loss of genetic variation transferred to the offspring. Options for selecting candidates to compose a founding population were explored, and recommendations made to promote the longevity and impact of a selective breeding program for Barramundi.

Barramundi is naturally a mass spawning species, which can be induced to spawn in captivity under conditions that attempt to replicate the natural environment. The Australian Barramundi industry has on hand a large number of mature broodstock that are currently supplying the grow-out market, however, before selective breeding programs can begin, it is important to assess the levels of genetic diversity and relatedness of current captive broodstock populations.

Mass spawning hatchery practices using small broodstock populations, in addition to the cannibalistic nature of some fish species, contribute to a reduction of genetic diversity from parent to offspring and throughout the juvenile grow-out stages. This is of concern when establishing a selective breeding program for such species because the genetic diversity that is captured in the start-up and initial generations of the program is the basic ingredient for future genetic improvement. The aim of this thesis was to examine methods for capturing and conserving genetic diversity in mass spawning Barramundi (Lates calcarifer), when constructing a base population for a long-term selective breeding program for the species.

The results suggest that a mass spawning group of at least 30 Barramundi individuals is required to achieve a high participation rate of breeders and to limit the loss of genetic variation transferred to the offspring. Options for selecting candidates to compose a founding population were explored, and recommendations made to promote the longevity and impact of a selective breeding program for Barramundi.

Barramundi is naturally a mass spawning species, which can be induced to spawn in captivity under conditions that attempt to replicate the natural environment. The Australian Barramundi industry has on hand a large number of mature broodstock that are currently supplying the grow-out market, however, before selective breeding programs can begin, it is important to assess the levels of genetic diversity and relatedness of current captive broodstock populations.

Mass spawning hatchery practices using small broodstock populations, in addition to the cannibalistic nature of some fish species, contribute to a reduction of genetic diversity from parent to offspring and throughout the juvenile grow-out stages. This is of concern when establishing a selective breeding program for such species because the genetic diversity that is captured in the start-up and initial generations of the program is the basic ingredient for future genetic improvement. The aim of this thesis was to examine methods for capturing and conserving genetic diversity in mass spawning Barramundi (Lates calcarifer), when constructing a base population for a long-term selective breeding program for the species.

The results suggest that a mass spawning group of at least 30 Barramundi individuals is required to achieve a high participation rate of breeders and to limit the loss of genetic variation transferred to the offspring. Options for selecting candidates to compose a founding population were explored, and recommendations made to promote the longevity and impact of a selective breeding program for Barramundi.

Barramundi is naturally a mass spawning species, which can be induced to spawn in captivity under conditions that attempt to replicate the natural environment. The Australian Barramundi industry has on hand a large number of mature broodstock that are currently supplying the grow-out market, however, before selective breeding programs can begin, it is important to assess the levels of genetic diversity and relatedness of current captive broodstock populations.

Mass spawning hatchery practices using small broodstock populations, in addition to the cannibalistic nature of some fish species, contribute to a reduction of genetic diversity from parent to offspring and throughout the juvenile grow-out stages. This is of concern when establishing a selective breeding program for such species because the genetic diversity that is captured in the start-up and initial generations of the program is the basic ingredient for future genetic improvement. The aim of this thesis was to examine methods for capturing and conserving genetic diversity in mass spawning Barramundi (Lates calcarifer), when constructing a base population for a long-term selective breeding program for the species.

The results suggest that a mass spawning group of at least 30 Barramundi individuals is required to achieve a high participation rate of breeders and to limit the loss of genetic variation transferred to the offspring. Options for selecting candidates to compose a founding population were explored, and recommendations made to promote the longevity and impact of a selective breeding program for Barramundi.

Barramundi is naturally a mass spawning species, which can be induced to spawn in captivity under conditions that attempt to replicate the natural environment. The Australian Barramundi industry has on hand a large number of mature broodstock that are currently supplying the grow-out market, however, before selective breeding programs can begin, it is important to assess the levels of genetic diversity and relatedness of current captive broodstock populations.

Mass spawning hatchery practices using small broodstock populations, in addition to the cannibalistic nature of some fish species, contribute to a reduction of genetic diversity from parent to offspring and throughout the juvenile grow-out stages. This is of concern when establishing a selective breeding program for such species because the genetic diversity that is captured in the start-up and initial generations of the program is the basic ingredient for future genetic improvement. The aim of this thesis was to examine methods for capturing and conserving genetic diversity in mass spawning Barramundi (Lates calcarifer), when constructing a base population for a long-term selective breeding program for the species.

The results suggest that a mass spawning group of at least 30 Barramundi individuals is required to achieve a high participation rate of breeders and to limit the loss of genetic variation transferred to the offspring. Options for selecting candidates to compose a founding population were explored, and recommendations made to promote the longevity and impact of a selective breeding program for Barramundi.

Barramundi is naturally a mass spawning species, which can be induced to spawn in captivity under conditions that attempt to replicate the natural environment. The Australian Barramundi industry has on hand a large number of mature broodstock that are currently supplying the grow-out market, however, before selective breeding programs can begin, it is important to assess the levels of genetic diversity and relatedness of current captive broodstock populations.

Mass spawning hatchery practices using small broodstock populations, in addition to the cannibalistic nature of some fish species, contribute to a reduction of genetic diversity from parent to offspring and throughout the juvenile grow-out stages. This is of concern when establishing a selective breeding program for such species because the genetic diversity that is captured in the start-up and initial generations of the program is the basic ingredient for future genetic improvement. The aim of this thesis was to examine methods for capturing and conserving genetic diversity in mass spawning Barramundi (Lates calcarifer), when constructing a base population for a long-term selective breeding program for the species.

The results suggest that a mass spawning group of at least 30 Barramundi individuals is required to achieve a high participation rate of breeders and to limit the loss of genetic variation transferred to the offspring. Options for selecting candidates to compose a founding population were explored, and recommendations made to promote the longevity and impact of a selective breeding program for Barramundi.

Barramundi is naturally a mass spawning species, which can be induced to spawn in captivity under conditions that attempt to replicate the natural environment. The Australian Barramundi industry has on hand a large number of mature broodstock that are currently supplying the grow-out market, however, before selective breeding programs can begin, it is important to assess the levels of genetic diversity and relatedness of current captive broodstock populations.

Mass spawning hatchery practices using small broodstock populations, in addition to the cannibalistic nature of some fish species, contribute to a reduction of genetic diversity from parent to offspring and throughout the juvenile grow-out stages. This is of concern when establishing a selective breeding program for such species because the genetic diversity that is captured in the start-up and initial generations of the program is the basic ingredient for future genetic improvement. The aim of this thesis was to examine methods for capturing and conserving genetic diversity in mass spawning Barramundi (Lates calcarifer), when constructing a base population for a long-term selective breeding program for the species.

The results suggest that a mass spawning group of at least 30 Barramundi individuals is required to achieve a high participation rate of breeders and to limit the loss of genetic variation transferred to the offspring. Options for selecting candidates to compose a founding population were explored, and recommendations made to promote the longevity and impact of a selective breeding program for Barramundi.

Barramundi is naturally a mass spawning species, which can be induced to spawn in captivity under conditions that attempt to replicate the natural environment. The Australian Barramundi industry has on hand a large number of mature broodstock that are currently supplying the grow-out market, however, before selective breeding programs can begin, it is important to assess the levels of genetic diversity and relatedness of current captive broodstock populations.

Mass spawning hatchery practices using small broodstock populations, in addition to the cannibalistic nature of some fish species, contribute to a reduction of genetic diversity from parent to offspring and throughout the juvenile grow-out stages. This is of concern when establishing a selective breeding program for such species because the genetic diversity that is captured in the start-up and initial generations of the program is the basic ingredient for future genetic improvement. The aim of this thesis was to examine methods for capturing and conserving genetic diversity in mass spawning Barramundi (Lates calcarifer), when constructing a base population for a long-term selective breeding program for the species.

The results suggest that a mass spawning group of at least 30 Barramundi individuals is required to achieve a high participation rate of breeders and to limit the loss of genetic variation transferred to the offspring. Options for selecting candidates to compose a founding population were explored, and recommendations made to promote the longevity and impact of a selective breeding program for Barramundi.

Barramundi is naturally a mass spawning species, which can be induced to spawn in captivity under conditions that attempt to replicate the natural environment. The Australian Barramundi industry has on hand a large number of mature broodstock that are currently supplying the grow-out market, however, before selective breeding programs can begin, it is important to assess the levels of genetic diversity and relatedness of current captive broodstock populations.

Mass spawning hatchery practices using small broodstock populations, in addition to the cannibalistic nature of some fish species, contribute to a reduction of genetic diversity from parent to offspring and throughout the juvenile grow-out stages. This is of concern when establishing a selective breeding program for such species because the genetic diversity that is captured in the start-up and initial generations of the program is the basic ingredient for future genetic improvement. The aim of this thesis was to examine methods for capturing and conserving genetic diversity in mass spawning Barramundi (Lates calcarifer), when constructing a base population for a long-term selective breeding program for the species.

The results suggest that a mass spawning group of at least 30 Barramundi individuals is required to achieve a high participation rate of breeders and to limit the loss of genetic variation transferred to the offspring. Options for selecting candidates to compose a founding population were explored, and recommendations made to promote the longevity and impact of a selective breeding program for Barramundi.

Barramundi is naturally a mass spawning species, which can be induced to spawn in captivity under conditions that attempt to replicate the natural environment. The Australian Barramundi industry has on hand a large number of mature broodstock that are currently supplying the grow-out market, however, before selective breeding programs can begin, it is important to assess the levels of genetic diversity and relatedness of current captive broodstock populations.

Mass spawning hatchery practices using small broodstock populations, in addition to the cannibalistic nature of some fish species, contribute to a reduction of genetic diversity from parent to offspring and throughout the juvenile grow-out stages. This is of concern when establishing a selective breeding program for such species because the genetic diversity that is captured in the start-up and initial generations of the program is the basic ingredient for future genetic improvement. The aim of this thesis was to examine methods for capturing and conserving genetic diversity in mass spawning Barramundi (Lates calcarifer), when constructing a base population for a long-term selective breeding program for the species.

The results suggest that a mass spawning group of at least 30 Barramundi individuals is required to achieve a high participation rate of breeders and to limit the loss of genetic variation transferred to the offspring. Options for selecting candidates to compose a founding population were explored, and recommendations made to promote the longevity and impact of a selective breeding program for Barramundi.

Barramundi is naturally a mass spawning species, which can be induced to spawn in captivity under conditions that attempt to replicate the natural environment. The Australian Barramundi industry has on hand a large number of mature broodstock that are currently supplying the grow-out market, however, before selective breeding programs can begin, it is important to assess the levels of genetic diversity and relatedness of current captive broodstock populations.

Mass spawning hatchery practices using small broodstock populations, in addition to the cannibalistic nature of some fish species, contribute to a reduction of genetic diversity from parent to offspring and throughout the juvenile grow-out stages. This is of concern when establishing a selective breeding program for such species because the genetic diversity that is captured in the start-up and initial generations of the program is the basic ingredient for future genetic improvement. The aim of this thesis was to examine methods for capturing and conserving genetic diversity in mass spawning Barramundi (Lates calcarifer), when constructing a base population for a long-term selective breeding program for the species.

The results suggest that a mass spawning group of at least 30 Barramundi individuals is required to achieve a high participation rate of breeders and to limit the loss of genetic variation transferred to the offspring. Options for selecting candidates to compose a founding population were explored, and recommendations made to promote the longevity and impact of a selective breeding program for Barramundi.

Barramundi is naturally a mass spawning species, which can be induced to spawn in captivity under conditions that attempt to replicate the natural environment. The Australian Barramundi industry has on hand a large number of mature broodstock that are currently supplying the grow-out market, however, before selective breeding programs can begin, it is important to assess the levels of genetic diversity and relatedness of current captive broodstock populations.

Mass spawning hatchery practices using small broodstock populations, in addition to the cannibalistic nature of some fish species, contribute to a reduction of genetic diversity from parent to offspring and throughout the juvenile grow-out stages. This is of concern when establishing a selective breeding program for such species because the genetic diversity that is captured in the start-up and initial generations of the program is the basic ingredient for future genetic improvement. The aim of this thesis was to examine methods for capturing and conserving genetic diversity in mass spawning Barramundi (Lates calcarifer), when constructing a base population for a long-term selective breeding program for the species.

The results suggest that a mass spawning group of at least 30 Barramundi individuals is required to achieve a high participation rate of breeders and to limit the loss of genetic variation transferred to the offspring. Options for selecting candidates to compose a founding population were explored, and recommendations made to promote the longevity and impact of a selective breeding program for Barramundi.

Barramundi is naturally a mass spawning species, which can be induced to spawn in captivity under conditions that attempt to replicate the natural environment. The Australian Barramundi industry has on hand a large number of mature broodstock that are currently supplying the grow-out market, however, before selective breeding programs can begin, it is important to assess the levels of genetic diversity and relatedness of current captive broodstock populations.

Mass spawning hatchery practices using small broodstock populations, in addition to the cannibalistic nature of some fish species, contribute to a reduction of genetic diversity from parent to offspring and throughout the juvenile grow-out stages. This is of concern when establishing a selective breeding program for such species because the genetic diversity that is captured in the start-up and initial generations of the program is the basic ingredient for future genetic improvement. The aim of this thesis was to examine methods for capturing and conserving genetic diversity in mass spawning Barramundi (Lates calcarifer), when constructing a base population for a long-term selective breeding program for the species.

The results suggest that a mass spawning group of at least 30 Barramundi individuals is required to achieve a high participation rate of breeders and to limit the loss of genetic variation transferred to the offspring. Options for selecting candidates to compose a founding population were explored, and recommendations made to promote the longevity and impact of a selective breeding program for Barramundi.

Barramundi is naturally a mass spawning species, which can be induced to spawn in captivity under conditions that attempt to replicate the natural environment. The Australian Barramundi industry has on hand a large number of mature broodstock that are currently supplying the grow-out market, however, before selective breeding programs can begin, it is important to assess the levels of genetic diversity and relatedness of current captive broodstock populations.

Mass spawning hatchery practices using small broodstock populations, in addition to the cannibalistic nature of some fish species, contribute to a reduction of genetic diversity from parent to offspring and throughout the juvenile grow-out stages. This is of concern when establishing a selective breeding program for such species because the genetic diversity that is captured in the start-up and initial generations of the program is the basic ingredient for future genetic improvement. The aim of this thesis was to examine methods for capturing and conserving genetic diversity in mass spawning Barramundi (Lates calcarifer), when constructing a base population for a long-term selective breeding program for the species.

The results suggest that a mass spawning group of at least 30 Barramundi individuals is required to achieve a high participation rate of breeders and to limit the loss of genetic variation transferred to the offspring. Options for selecting candidates to compose a founding population were explored, and recommendations made to promote the longevity and impact of a selective breeding program for Barramundi.

Barramundi is naturally a mass spawning species, which can be induced to spawn in captivity under conditions that attempt to replicate the natural environment. The Australian Barramundi industry has on hand a large number of mature broodstock that are currently supplying the grow-out market, however, before selective breeding programs can begin, it is important to assess the levels of genetic diversity and relatedness of current captive broodstock populations.

Mass spawning hatchery practices using small broodstock populations, in addition to the cannibalistic nature of some fish species, contribute to a reduction of genetic diversity from parent to offspring and throughout the juvenile grow-out stages. This is of concern when establishing a selective breeding program for such species because the genetic diversity that is captured in the start-up and initial generations of the program is the basic ingredient for future genetic improvement. The aim of this thesis was to examine methods for capturing and conserving genetic diversity in mass spawning Barramundi (Lates calcarifer), when constructing a base population for a long-term selective breeding program for the species.

The results suggest that a mass spawning group of at least 30 Barramundi individuals is required to achieve a high participation rate of breeders and to limit the loss of genetic variation transferred to the offspring. Options for selecting candidates to compose a founding population were explored, and recommendations made to promote the longevity and impact of a selective breeding program for Barramundi.

Barramundi is naturally a mass spawning species, which can be induced to spawn in captivity under conditions that attempt to replicate the natural environment. The Australian Barramundi industry has on hand a large number of mature broodstock that are currently supplying the grow-out market, however, before selective breeding programs can begin, it is important to assess the levels of genetic diversity and relatedness of current captive broodstock populations.

Mass spawning hatchery practices using small broodstock populations, in addition to the cannibalistic nature of some fish species, contribute to a reduction of genetic diversity from parent to offspring and throughout the juvenile grow-out stages. This is of concern when establishing a selective breeding program for such species because the genetic diversity that is captured in the start-up and initial generations of the program is the basic ingredient for future genetic improvement. The aim of this thesis was to examine methods for capturing and conserving genetic diversity in mass spawning Barramundi (Lates calcarifer), when constructing a base population for a long-term selective breeding program for the species.

The results suggest that a mass spawning group of at least 30 Barramundi individuals is required to achieve a high participation rate of breeders and to limit the loss of genetic variation transferred to the offspring. Options for selecting candidates to compose a founding population were explored, and recommendations made to promote the longevity and impact of a selective breeding program for Barramundi.

Barramundi is naturally a mass spawning species, which can be induced to spawn in captivity under conditions that attempt to replicate the natural environment. The Australian Barramundi industry has on hand a large number of mature broodstock that are currently supplying the grow-out market, however, before selective breeding programs can begin, it is important to assess the levels of genetic diversity and relatedness of current captive broodstock populations.

Mass spawning hatchery practices using small broodstock populations, in addition to the cannibalistic nature of some fish species, contribute to a reduction of genetic diversity from parent to offspring and throughout the juvenile grow-out stages. This is of concern when establishing a selective breeding program for such species because the genetic diversity that is captured in the start-up and initial generations of the program is the basic ingredient for future genetic improvement. The aim of this thesis was to examine methods for capturing and conserving genetic diversity in mass spawning Barramundi (Lates calcarifer), when constructing a base population for a long-term selective breeding program for the species.

The results suggest that a mass spawning group of at least 30 Barramundi individuals is required to achieve a high participation rate of breeders and to limit the loss of genetic variation transferred to the offspring. Options for selecting candidates to compose a founding population were explored, and recommendations made to promote the longevity and impact of a selective breeding program for Barramundi.

Barramundi is naturally a mass spawning species, which can be induced to spawn in captivity under conditions that attempt to replicate the natural environment. The Australian Barramundi industry has on hand a large number of mature broodstock that are currently supplying the grow-out market, however, before selective breeding programs can begin, it is important to assess the levels of genetic diversity and relatedness of current captive broodstock populations.

Mass spawning hatchery practices using small broodstock populations, in addition to the cannibalistic nature of some fish species, contribute to a reduction of genetic diversity from parent to offspring and throughout the juvenile grow-out stages. This is of concern when establishing a selective breeding program for such species because the genetic diversity that is captured in the start-up and initial generations of the program is the basic ingredient for future genetic improvement. The aim of this thesis was to examine methods for capturing and conserving genetic diversity in mass spawning Barramundi (Lates calcarifer), when constructing a base population for a long-term selective breeding program for the species.

The results suggest that a mass spawning group of at least 30 Barramundi individuals is required to achieve a high participation rate of breeders and to limit the loss of genetic variation transferred to the offspring. Options for selecting candidates to compose a founding population were explored, and recommendations made to promote the longevity and impact of a selective breeding program for Barramundi.

Barramundi is naturally a mass spawning species, which can be induced to spawn in captivity under conditions that attempt to replicate the natural environment. The Australian Barramundi industry has on hand a large number of mature broodstock that are currently supplying the grow-out market, however, before selective breeding programs can begin, it is important to assess the levels of genetic diversity and relatedness of current captive broodstock populations.

Mass spawning hatchery practices using small broodstock populations, in addition to the cannibalistic nature of some fish species, contribute to a reduction of genetic diversity from parent to offspring and throughout the juvenile grow-out stages. This is of concern when establishing a selective breeding program for such species because the genetic diversity that is captured in the start-up and initial generations of the program is the basic ingredient for future genetic improvement. The aim of this thesis was to examine methods for capturing and conserving genetic diversity in mass spawning Barramundi (Lates calcarifer), when constructing a base population for a long-term selective breeding program for the species.

The results suggest that a mass spawning group of at least 30 Barramundi individuals is required to achieve a high participation rate of breeders and to limit the loss of genetic variation transferred to the offspring. Options for selecting candidates to compose a founding population were explored, and recommendations made to promote the longevity and impact of a selective breeding program for Barramundi.

Barramundi is naturally a mass spawning species, which can be induced to spawn in captivity under conditions that attempt to replicate the natural environment. The Australian Barramundi industry has on hand a large number of mature broodstock that are currently supplying the grow-out market, however, before selective breeding programs can begin, it is important to assess the levels of genetic diversity and relatedness of current captive broodstock populations.

Mass spawning hatchery practices using small broodstock populations, in addition to the cannibalistic nature of some fish species, contribute to a reduction of genetic diversity from parent to offspring and throughout the juvenile grow-out stages. This is of concern when establishing a selective breeding program for such species because the genetic diversity that is captured in the start-up and initial generations of the program is the basic ingredient for future genetic improvement. The aim of this thesis was to examine methods for capturing and conserving genetic diversity in mass spawning Barramundi (Lates calcarifer), when constructing a base population for a long-term selective breeding program for the species.

The results suggest that a mass spawning group of at least 30 Barramundi individuals is required to achieve a high participation rate of breeders and to limit the loss of genetic variation transferred to the offspring. Options for selecting candidates to compose a founding population were explored, and recommendations made to promote the longevity and impact of a selective breeding program for Barramundi.

Barramundi is naturally a mass spawning species, which can be induced to spawn in captivity under conditions that attempt to replicate the natural environment. The Australian Barramundi industry has on hand a large number of mature broodstock that are currently supplying the grow-out market, however, before selective breeding programs can begin, it is important to assess the levels of genetic diversity and relatedness of current captive broodstock populations.

Mass spawning hatchery practices using small broodstock populations, in addition to the cannibalistic nature of some fish species, contribute to a reduction of genetic diversity from parent to offspring and throughout the juvenile grow-out stages. This is of concern when establishing a selective breeding program for such species because the genetic diversity that is captured in the start-up and initial generations of the program is the basic ingredient for future genetic improvement. The aim of this thesis was to examine methods for capturing and conserving genetic diversity in mass spawning Barramundi (Lates calcarifer), when constructing a base population for a long-term selective breeding program for the species.

The results suggest that a mass spawning group of at least 30 Barramundi individuals is required to achieve a high participation rate of breeders and to limit the loss of genetic variation transferred to the offspring. Options for selecting candidates to compose a founding population were explored, and recommendations made to promote the longevity and impact of a selective breeding program for Barramundi.

Barramundi is naturally a mass spawning species, which can be induced to spawn in captivity under conditions that attempt to replicate the natural environment. The Australian Barramundi industry has on hand a large number of mature broodstock that are currently supplying the grow-out market, however, before selective breeding programs can begin, it is important to assess the levels of genetic diversity and relatedness of current captive broodstock populations.

Mass spawning hatchery practices using small broodstock populations, in addition to the cannibalistic nature of some fish species, contribute to a reduction of genetic diversity from parent to offspring and throughout the juvenile grow-out stages. This is of concern when establishing a selective breeding program for such species because the genetic diversity that is captured in the start-up and initial generations of the program is the basic ingredient for future genetic improvement. The aim of this thesis was to examine methods for capturing and conserving genetic diversity in mass spawning Barramundi (Lates calcarifer), when constructing a base population for a long-term selective breeding program for the species.

The results suggest that a mass spawning group of at least 30 Barramundi individuals is required to achieve a high participation rate of breeders and to limit the loss of genetic variation transferred to the offspring. Options for selecting candidates to compose a founding population were explored, and recommendations made to promote the longevity and impact of a selective breeding program for Barramundi.

Barramundi is naturally a mass spawning species, which can be induced to spawn in captivity under conditions that attempt to replicate the natural environment. The Australian Barramundi industry has on hand a large number of mature broodstock that are currently supplying the grow-out market, however, before selective breeding programs can begin, it is important to assess the levels of genetic diversity and relatedness of current captive broodstock populations.

Mass spawning hatchery practices using small broodstock populations, in addition to the cannibalistic nature of some fish species, contribute to a reduction of genetic diversity from parent to offspring and throughout the juvenile grow-out stages. This is of concern when establishing a selective breeding program for such species because the genetic diversity that is captured in the start-up and initial generations of the program is the basic ingredient for future genetic improvement. The aim of this thesis was to examine methods for capturing and conserving genetic diversity in mass spawning Barramundi (Lates calcarifer), when constructing a base population for a long-term selective breeding program for the species.

The results suggest that a mass spawning group of at least 30 Barramundi individuals is required to achieve a high participation rate of breeders and to limit the loss of genetic variation transferred to the offspring. Options for selecting candidates to compose a founding population were explored, and recommendations made to promote the longevity and impact of a selective breeding program for Barramundi.

Barramundi is naturally a mass spawning species, which can be induced to spawn in captivity under conditions that attempt to replicate the natural environment. The Australian Barramundi industry has on hand a large number of mature broodstock that are currently supplying the grow-out market, however, before selective breeding programs can begin, it is important to assess the levels of genetic diversity and relatedness of current captive broodstock populations.

Mass spawning hatchery practices using small broodstock populations, in addition to the cannibalistic nature of some fish species, contribute to a reduction of genetic diversity from parent to offspring and throughout the juvenile grow-out stages. This is of concern when establishing a selective breeding program for such species because the genetic diversity that is captured in the start-up and initial generations of the program is the basic ingredient for future genetic improvement. The aim of this thesis was to examine methods for capturing and conserving genetic diversity in mass spawning Barramundi (Lates calcarifer), when constructing a base population for a long-term selective breeding program for the species.

The results suggest that a mass spawning group of at least 30 Barramundi individuals is required to achieve a high participation rate of breeders and to limit the loss of genetic variation transferred to the offspring. Options for selecting candidates to compose a founding population were explored, and recommendations made to promote the longevity and impact of a selective breeding program for Barramundi.

Barramundi is naturally a mass spawning species, which can be induced to spawn in captivity under conditions that attempt to replicate the natural environment. The Australian Barramundi industry has on hand a large number of mature broodstock that are currently supplying the grow-out market, however, before selective breeding programs can begin, it is important to assess the levels of genetic diversity and relatedness of current captive broodstock populations.

Mass spawning hatchery practices using small broodstock populations, in addition to the cannibalistic nature of some fish species, contribute to a reduction of genetic diversity from parent to offspring and throughout the juvenile grow-out stages. This is of concern when establishing a selective breeding program for such species because the genetic diversity that is captured in the start-up and initial generations of the program is the basic ingredient for future genetic improvement. The aim of this thesis was to examine methods for capturing and conserving genetic diversity in mass spawning Barramundi (Lates calcarifer), when constructing a base population for a long-term selective breeding program for the species.

The results suggest that a mass spawning group of at least 30 Barramundi individuals is required to achieve a high participation rate of breeders and to limit the loss of genetic variation transferred to the offspring. Options for selecting candidates to compose a founding population were explored, and recommendations made to promote the longevity and impact of a selective breeding program for Barramundi.

Barramundi is naturally a mass spawning species, which can be induced to spawn in captivity under conditions that attempt to replicate the natural environment. The Australian Barramundi industry has on hand a large number of mature broodstock that are currently supplying the grow-out market, however, before selective breeding programs can begin, it is important to assess the levels of genetic diversity and relatedness of current captive broodstock populations.

Mass spawning hatchery practices using small broodstock populations, in addition to the cannibalistic nature of some fish species, contribute to a reduction of genetic diversity from parent to offspring and throughout the juvenile grow-out stages. This is of concern when establishing a selective breeding program for such species because the genetic diversity that is captured in the start-up and initial generations of the program is the basic ingredient for future genetic improvement. The aim of this thesis was to examine methods for capturing and conserving genetic diversity in mass spawning Barramundi (Lates calcarifer), when constructing a base population for a long-term selective breeding program for the species.

The results suggest that a mass spawning group of at least 30 Barramundi individuals is required to achieve a high participation rate of breeders and to limit the loss of genetic variation transferred to the offspring. Options for selecting candidates to compose a founding population were explored, and recommendations made to promote the longevity and impact of a selective breeding program for Barramundi.

Barramundi is naturally a mass spawning species, which can be induced to spawn in captivity under conditions that attempt to replicate the natural environment. The Australian Barramundi industry has on hand a large number of mature broodstock that are currently supplying the grow-out market, however, before selective breeding programs can begin, it is important to assess the levels of genetic diversity and relatedness of current captive broodstock populations.

Mass spawning hatchery practices using small broodstock populations, in addition to the cannibalistic nature of some fish species, contribute to a reduction of genetic diversity from parent to offspring and throughout the juvenile grow-out stages. This is of concern when establishing a selective breeding program for such species because the genetic diversity that is captured in the start-up and initial generations of the program is the basic ingredient for future genetic improvement. The aim of this thesis was to examine methods for capturing and conserving genetic diversity in mass spawning Barramundi (Lates calcarifer), when constructing a base population for a long-term selective breeding program for the species.

The results suggest that a mass spawning group of at least 30 Barramundi individuals is required to achieve a high participation rate of breeders and to limit the loss of genetic variation transferred to the offspring. Options for selecting candidates to compose a founding population were explored, and recommendations made to promote the longevity and impact of a selective breeding program for Barramundi.

Barramundi is naturally a mass spawning species, which can be induced to spawn in captivity under conditions that attempt to replicate the natural environment. The Australian Barramundi industry has on hand a large number of mature broodstock that are currently supplying the grow-out market, however, before selective breeding programs can begin, it is important to assess the levels of genetic diversity and relatedness of current captive broodstock populations.

Mass spawning hatchery practices using small broodstock populations, in addition to the cannibalistic nature of some fish species, contribute to a reduction of genetic diversity from parent to offspring and throughout the juvenile grow-out stages. This is of concern when establishing a selective breeding program for such species because the genetic diversity that is captured in the start-up and initial generations of the program is the basic ingredient for future genetic improvement. The aim of this thesis was to examine methods for capturing and conserving genetic diversity in mass spawning Barramundi (Lates calcarifer), when constructing a base population for a long-term selective breeding program for the species.

The results suggest that a mass spawning group of at least 30 Barramundi individuals is required to achieve a high participation rate of breeders and to limit the loss of genetic variation transferred to the offspring. Options for selecting candidates to compose a founding population were explored, and recommendations made to promote the longevity and impact of a selective breeding program for Barramundi.

Barramundi is naturally a mass spawning species, which can be induced to spawn in captivity under conditions that attempt to replicate the natural environment. The Australian Barramundi industry has on hand a large number of mature broodstock that are currently supplying the grow-out market, however, before selective breeding programs can begin, it is important to assess the levels of genetic diversity and relatedness of current captive broodstock populations.

Mass spawning hatchery practices using small broodstock populations, in addition to the cannibalistic nature of some fish species, contribute to a reduction of genetic diversity from parent to offspring and throughout the juvenile grow-out stages. This is of concern when establishing a selective breeding program for such species because the genetic diversity that is captured in the start-up and initial generations of the program is the basic ingredient for future genetic improvement. The aim of this thesis was to examine methods for capturing and conserving genetic diversity in mass spawning Barramundi (Lates calcarifer), when constructing a base population for a long-term selective breeding program for the species.

The results suggest that a mass spawning group of at least 30 Barramundi individuals is required to achieve a high participation rate of breeders and to limit the loss of genetic variation transferred to the offspring. Options for selecting candidates to compose a founding population were explored, and recommendations made to promote the longevity and impact of a selective breeding program for Barramundi.

Barramundi is naturally a mass spawning species, which can be induced to spawn in captivity under conditions that attempt to replicate the natural environment. The Australian Barramundi industry has on hand a large number of mature broodstock that are currently supplying the grow-out market, however, before selective breeding programs can begin, it is important to assess the levels of genetic diversity and relatedness of current captive broodstock populations.

Mass spawning hatchery practices using small broodstock populations, in addition to the cannibalistic nature of some fish species, contribute to a reduction of genetic diversity from parent to offspring and throughout the juvenile grow-out stages. This is of concern when establishing a selective breeding program for such species because the genetic diversity that is captured in the start-up and initial generations of the program is the basic ingredient for future genetic improvement. The aim of this thesis was to examine methods for capturing and conserving genetic diversity in mass spawning Barramundi (Lates calcarifer), when constructing a base population for a long-term selective breeding program for the species.

The results suggest that a mass spawning group of at least 30 Barramundi individuals is required to achieve a high participation rate of breeders and to limit the loss of genetic variation transferred to the offspring. Options for selecting candidates to compose a founding population were explored, and recommendations made to promote the longevity and impact of a selective breeding program for Barramundi.

Barramundi is naturally a mass spawning species, which can be induced to spawn in captivity under conditions that attempt to replicate the natural environment. The Australian Barramundi industry has on hand a large number of mature broodstock that are currently supplying the grow-out market, however, before selective breeding programs can begin, it is important to assess the levels of genetic diversity and relatedness of current captive broodstock populations.

Mass spawning hatchery practices using small broodstock populations, in addition to the cannibalistic nature of some fish species, contribute to a reduction of genetic diversity from parent to offspring and throughout the juvenile grow-out stages. This is of concern when establishing a selective breeding program for such species because the genetic diversity that is captured in the start-up and initial generations of the program is the basic ingredient for future genetic improvement. The aim of this thesis was to examine methods for capturing and conserving genetic diversity in mass spawning Barramundi (Lates calcarifer), when constructing a base population for a long-term selective breeding program for the species.

The results suggest that a mass spawning group of at least 30 Barramundi individuals is required to achieve a high participation rate of breeders and to limit the loss of genetic variation transferred to the offspring. Options for selecting candidates to compose a founding population were explored, and recommendations made to promote the longevity and impact of a selective breeding program for Barramundi.

Barramundi is naturally a mass spawning species, which can be induced to spawn in captivity under conditions that attempt to replicate the natural environment. The Australian Barramundi industry has on hand a large number of mature broodstock that are currently supplying the grow-out market, however, before selective breeding programs can begin, it is important to assess the levels of genetic diversity and relatedness of current captive broodstock populations.

Mass spawning hatchery practices using small broodstock populations, in addition to the cannibalistic nature of some fish species, contribute to a reduction of genetic diversity from parent to offspring and throughout the juvenile grow-out stages. This is of concern when establishing a selective breeding program for such species because the genetic diversity that is captured in the start-up and initial generations of the program is the basic ingredient for future genetic improvement. The aim of this thesis was to examine methods for capturing and conserving genetic diversity in mass spawning Barramundi (Lates calcarifer), when constructing a base population for a long-term selective breeding program for the species.

The results suggest that a mass spawning group of at least 30 Barramundi individuals is required to achieve a high participation rate of breeders and to limit the loss of genetic variation transferred to the offspring. Options for selecting candidates to compose a founding population were explored, and recommendations made to promote the longevity and impact of a selective breeding program for Barramundi.

Barramundi is naturally a mass spawning species, which can be induced to spawn in captivity under conditions that attempt to replicate the natural environment. The Australian Barramundi industry has on hand a large number of mature broodstock that are currently supplying the grow-out market, however, before selective breeding programs can begin, it is important to assess the levels of genetic diversity and relatedness of current captive broodstock populations.

Mass spawning hatchery practices using small broodstock populations, in addition to the cannibalistic nature of some fish species, contribute to a reduction of genetic diversity from parent to offspring and throughout the juvenile grow-out stages. This is of concern when establishing a selective breeding program for such species because the genetic diversity that is captured in the start-up and initial generations of the program is the basic ingredient for future genetic improvement. The aim of this thesis was to examine methods for capturing and conserving genetic diversity in mass spawning Barramundi (Lates calcarifer), when constructing a base population for a long-term selective breeding program for the species.

The results suggest that a mass spawning group of at least 30 Barramundi individuals is required to achieve a high participation rate of breeders and to limit the loss of genetic variation transferred to the offspring. Options for selecting candidates to compose a founding population were explored, and recommendations made to promote the longevity and impact of a selective breeding program for Barramundi.

Barramundi is naturally a mass spawning species, which can be induced to spawn in captivity under conditions that attempt to replicate the natural environment. The Australian Barramundi industry has on hand a large number of mature broodstock that are currently supplying the grow-out market, however, before selective breeding programs can begin, it is important to assess the levels of genetic diversity and relatedness of current captive broodstock populations.

Mass spawning hatchery practices using small broodstock populations, in addition to the cannibalistic nature of some fish species, contribute to a reduction of genetic diversity from parent to offspring and throughout the juvenile grow-out stages. This is of concern when establishing a selective breeding program for such species because the genetic diversity that is captured in the start-up and initial generations of the program is the basic ingredient for future genetic improvement. The aim of this thesis was to examine methods for capturing and conserving genetic diversity in mass spawning Barramundi (Lates calcarifer), when constructing a base population for a long-term selective breeding program for the species.

The results suggest that a mass spawning group of at least 30 Barramundi individuals is required to achieve a high participation rate of breeders and to limit the loss of genetic variation transferred to the offspring. Options for selecting candidates to compose a founding population were explored, and recommendations made to promote the longevity and impact of a selective breeding program for Barramundi.

Barramundi is naturally a mass spawning species, which can be induced to spawn in captivity under conditions that attempt to replicate the natural environment. The Australian Barramundi industry has on hand a large number of mature broodstock that are currently supplying the grow-out market, however, before selective breeding programs can begin, it is important to assess the levels of genetic diversity and relatedness of current captive broodstock populations.

Mass spawning hatchery practices using small broodstock populations, in addition to the cannibalistic nature of some fish species, contribute to a reduction of genetic diversity from parent to offspring and throughout the juvenile grow-out stages. This is of concern when establishing a selective breeding program for such species because the genetic diversity that is captured in the start-up and initial generations of the program is the basic ingredient for future genetic improvement. The aim of this thesis was to examine methods for capturing and conserving genetic diversity in mass spawning Barramundi (Lates calcarifer), when constructing a base population for a long-term selective breeding program for the species.

The results suggest that a mass spawning group of at least 30 Barramundi individuals is required to achieve a high participation rate of breeders and to limit the loss of genetic variation transferred to the offspring. Options for selecting candidates to compose a founding population were explored, and recommendations made to promote the longevity and impact of a selective breeding program for Barramundi.

Barramundi is naturally a mass spawning species, which can be induced to spawn in captivity under conditions that attempt to replicate the natural environment. The Australian Barramundi industry has on hand a large number of mature broodstock that are currently supplying the grow-out market, however, before selective breeding programs can begin, it is important to assess the levels of genetic diversity and relatedness of current captive broodstock populations.

Mass spawning hatchery practices using small broodstock populations, in addition to the cannibalistic nature of some fish species, contribute to a reduction of genetic diversity from parent to offspring and throughout the juvenile grow-out stages. This is of concern when establishing a selective breeding program for such species because the genetic diversity that is captured in the start-up and initial generations of the program is the basic ingredient for future genetic improvement. The aim of this thesis was to examine methods for capturing and conserving genetic diversity in mass spawning Barramundi (Lates calcarifer), when constructing a base population for a long-term selective breeding program for the species.

The results suggest that a mass spawning group of at least 30 Barramundi individuals is required to achieve a high participation rate of breeders and to limit the loss of genetic variation transferred to the offspring. Options for selecting candidates to compose a founding population were explored, and recommendations made to promote the longevity and impact of a selective breeding program for Barramundi.

Barramundi is naturally a mass spawning species, which can be induced to spawn in captivity under conditions that attempt to replicate the natural environment. The Australian Barramundi industry has on hand a large number of mature broodstock that are currently supplying the grow-out market, however, before selective breeding programs can begin, it is important to assess the levels of genetic diversity and relatedness of current captive broodstock populations.

Mass spawning hatchery practices using small broodstock populations, in addition to the cannibalistic nature of some fish species, contribute to a reduction of genetic diversity from parent to offspring and throughout the juvenile grow-out stages. This is of concern when establishing a selective breeding program for such species because the genetic diversity that is captured in the start-up and initial generations of the program is the basic ingredient for future genetic improvement. The aim of this thesis was to examine methods for capturing and conserving genetic diversity in mass spawning Barramundi (Lates calcarifer), when constructing a base population for a long-term selective breeding program for the species.

The results suggest that a mass spawning group of at least 30 Barramundi individuals is required to achieve a high participation rate of breeders and to limit the loss of genetic variation transferred to the offspring. Options for selecting candidates to compose a founding population were explored, and recommendations made to promote the longevity and impact of a selective breeding program for Barramundi.

Barramundi is naturally a mass spawning species, which can be induced to spawn in captivity under conditions that attempt to replicate the natural environment. The Australian Barramundi industry has on hand a large number of mature broodstock that are currently supplying the grow-out market, however, before selective breeding programs can begin, it is important to assess the levels of genetic diversity and relatedness of current captive broodstock populations.

Mass spawning hatchery practices using small broodstock populations, in addition to the cannibalistic nature of some fish species, contribute to a reduction of genetic diversity from parent to offspring and throughout the juvenile grow-out stages. This is of concern when establishing a selective breeding program for such species because the genetic diversity that is captured in the start-up and initial generations of the program is the basic ingredient for future genetic improvement. The aim of this thesis was to examine methods for capturing and conserving genetic diversity in mass spawning Barramundi (Lates calcarifer), when constructing a base population for a long-term selective breeding program for the species.

The results suggest that a mass spawning group of at least 30 Barramundi individuals is required to achieve a high participation rate of breeders and to limit the loss of genetic variation transferred to the offspring. Options for selecting candidates to compose a founding population were explored, and recommendations made to promote the longevity and impact of a selective breeding program for Barramundi.

Barramundi is naturally a mass spawning species, which can be induced to spawn in captivity under conditions that attempt to replicate the natural environment. The Australian Barramundi industry has on hand a large number of mature broodstock that are currently supplying the grow-out market, however, before selective breeding programs can begin, it is important to assess the levels of genetic diversity and relatedness of current captive broodstock populations.

Mass spawning hatchery practices using small broodstock populations, in addition to the cannibalistic nature of some fish species, contribute to a reduction of genetic diversity from parent to offspring and throughout the juvenile grow-out stages. This is of concern when establishing a selective breeding program for such species because the genetic diversity that is captured in the start-up and initial generations of the program is the basic ingredient for future genetic improvement. The aim of this thesis was to examine methods for capturing and conserving genetic diversity in mass spawning Barramundi (Lates calcarifer), when constructing a base population for a long-term selective breeding program for the species.

The results suggest that a mass spawning group of at least 30 Barramundi individuals is required to achieve a high participation rate of breeders and to limit the loss of genetic variation transferred to the offspring. Options for selecting candidates to compose a founding population were explored, and recommendations made to promote the longevity and impact of a selective breeding program for Barramundi.

Barramundi is naturally a mass spawning species, which can be induced to spawn in captivity under conditions that attempt to replicate the natural environment. The Australian Barramundi industry has on hand a large number of mature broodstock that are currently supplying the grow-out market, however, before selective breeding programs can begin, it is important to assess the levels of genetic diversity and relatedness of current captive broodstock populations.

Mass spawning hatchery practices using small broodstock populations, in addition to the cannibalistic nature of some fish species, contribute to a reduction of genetic diversity from parent to offspring and throughout the juvenile grow-out stages. This is of concern when establishing a selective breeding program for such species because the genetic diversity that is captured in the start-up and initial generations of the program is the basic ingredient for future genetic improvement. The aim of this thesis was to examine methods for capturing and conserving genetic diversity in mass spawning Barramundi (Lates calcarifer), when constructing a base population for a long-term selective breeding program for the species.

The results suggest that a mass spawning group of at least 30 Barramundi individuals is required to achieve a high participation rate of breeders and to limit the loss of genetic variation transferred to the offspring. Options for selecting candidates to compose a founding population were explored, and recommendations made to promote the longevity and impact of a selective breeding program for Barramundi.

Barramundi is naturally a mass spawning species, which can be induced to spawn in captivity under conditions that attempt to replicate the natural environment. The Australian Barramundi industry has on hand a large number of mature broodstock that are currently supplying the grow-out market, however, before selective breeding programs can begin, it is important to assess the levels of genetic diversity and relatedness of current captive broodstock populations.

Mass spawning hatchery practices using small broodstock populations, in addition to the cannibalistic nature of some fish species, contribute to a reduction of genetic diversity from parent to offspring and throughout the juvenile grow-out stages. This is of concern when establishing a selective breeding program for such species because the genetic diversity that is captured in the start-up and initial generations of the program is the basic ingredient for future genetic improvement. The aim of this thesis was to examine methods for capturing and conserving genetic diversity in mass spawning Barramundi (Lates calcarifer), when constructing a base population for a long-term selective breeding program for the species.

The results suggest that a mass spawning group of at least 30 Barramundi individuals is required to achieve a high participation rate of breeders and to limit the loss of genetic variation transferred to the offspring. Options for selecting candidates to compose a founding population were explored, and recommendations made to promote the longevity and impact of a selective breeding program for Barramundi.

Barramundi is naturally a mass spawning species, which can be induced to spawn in captivity under conditions that attempt to replicate the natural environment. The Australian Barramundi industry has on hand a large number of mature broodstock that are currently supplying the grow-out market, however, before selective breeding programs can begin, it is important to assess the levels of genetic diversity and relatedness of current captive broodstock populations.

Mass spawning hatchery practices using small broodstock populations, in addition to the cannibalistic nature of some fish species, contribute to a reduction of genetic diversity from parent to offspring and throughout the juvenile grow-out stages. This is of concern when establishing a selective breeding program for such species because the genetic diversity that is captured in the start-up and initial generations of the program is the basic ingredient for future genetic improvement. The aim of this thesis was to examine methods for capturing and conserving genetic diversity in mass spawning Barramundi (Lates calcarifer), when constructing a base population for a long-term selective breeding program for the species.

The results suggest that a mass spawning group of at least 30 Barramundi individuals is required to achieve a high participation rate of breeders and to limit the loss of genetic variation transferred to the offspring. Options for selecting candidates to compose a founding population were explored, and recommendations made to promote the longevity and impact of a selective breeding program for Barramundi.

Barramundi is naturally a mass spawning species, which can be induced to spawn in captivity under conditions that attempt to replicate the natural environment. The Australian Barramundi industry has on hand a large number of mature broodstock that are currently supplying the grow-out market, however, before selective breeding programs can begin, it is important to assess the levels of genetic diversity and relatedness of current captive broodstock populations.

Mass spawning hatchery practices using small broodstock populations, in addition to the cannibalistic nature of some fish species, contribute to a reduction of genetic diversity from parent to offspring and throughout the juvenile grow-out stages. This is of concern when establishing a selective breeding program for such species because the genetic diversity that is captured in the start-up and initial generations of the program is the basic ingredient for future genetic improvement. The aim of this thesis was to examine methods for capturing and conserving genetic diversity in mass spawning Barramundi (Lates calcarifer), when constructing a base population for a long-term selective breeding program for the species.

The results suggest that a mass spawning group of at least 30 Barramundi individuals is required to achieve a high participation rate of breeders and to limit the loss of genetic variation transferred to the offspring. Options for selecting candidates to compose a founding population were explored, and recommendations made to promote the longevity and impact of a selective breeding program for Barramundi.

Barramundi is naturally a mass spawning species, which can be induced to spawn in captivity under conditions that attempt to replicate the natural environment. The Australian Barramundi industry has on hand a large number of mature broodstock that are currently supplying the grow-out market, however, before selective breeding programs can begin, it is important to assess the levels of genetic diversity and relatedness of current captive broodstock populations.

Mass spawning hatchery practices using small broodstock populations, in addition to the cannibalistic nature of some fish species, contribute to a reduction of genetic diversity from parent to offspring and throughout the juvenile grow-out stages. This is of concern when establishing a selective breeding program for such species because the genetic diversity that is captured in the start-up and initial generations of the program is the basic ingredient for future genetic improvement. The aim of this thesis was to examine methods for capturing and conserving genetic diversity in mass spawning Barramundi (Lates calcarifer), when constructing a base population for a long-term selective breeding program for the species.

The results suggest that a mass spawning group of at least 30 Barramundi individuals is required to achieve a high participation rate of breeders and to limit the loss of genetic variation transferred to the offspring. Options for selecting candidates to compose a founding population were explored, and recommendations made to promote the longevity and impact of a selective breeding program for Barramundi.

Barramundi is naturally a mass spawning species, which can be induced to spawn in captivity under conditions that attempt to replicate the natural environment. The Australian Barramundi industry has on hand a large number of mature broodstock that are currently supplying the grow-out market, however, before selective breeding programs can begin, it is important to assess the levels of genetic diversity and relatedness of current captive broodstock populations.

Mass spawning hatchery practices using small broodstock populations, in addition to the cannibalistic nature of some fish species, contribute to a reduction of genetic diversity from parent to offspring and throughout the juvenile grow-out stages. This is of concern when establishing a selective breeding program for such species because the genetic diversity that is captured in the start-up and initial generations of the program is the basic ingredient for future genetic improvement. The aim of this thesis was to examine methods for capturing and conserving genetic diversity in mass spawning Barramundi (Lates calcarifer), when constructing a base population for a long-term selective breeding program for the species.

The results suggest that a mass spawning group of at least 30 Barramundi individuals is required to achieve a high participation rate of breeders and to limit the loss of genetic variation transferred to the offspring. Options for selecting candidates to compose a founding population were explored, and recommendations made to promote the longevity and impact of a selective breeding program for Barramundi.

Barramundi is naturally a mass spawning species, which can be induced to spawn in captivity under conditions that attempt to replicate the natural environment. The Australian Barramundi industry has on hand a large number of mature broodstock that are currently supplying the grow-out market, however, before selective breeding programs can begin, it is important to assess the levels of genetic diversity and relatedness of current captive broodstock populations.

Mass spawning hatchery practices using small broodstock populations, in addition to the cannibalistic nature of some fish species, contribute to a reduction of genetic diversity from parent to offspring and throughout the juvenile grow-out stages. This is of concern when establishing a selective breeding program for such species because the genetic diversity that is captured in the start-up and initial generations of the program is the basic ingredient for future genetic improvement. The aim of this thesis was to examine methods for capturing and conserving genetic diversity in mass spawning Barramundi (Lates calcarifer), when constructing a base population for a long-term selective breeding program for the species.

The results suggest that a mass spawning group of at least 30 Barramundi individuals is required to achieve a high participation rate of breeders and to limit the loss of genetic variation transferred to the offspring. Options for selecting candidates to compose a founding population were explored, and recommendations made to promote the longevity and impact of a selective breeding program for Barramundi.

Barramundi is naturally a mass spawning species, which can be induced to spawn in captivity under conditions that attempt to replicate the natural environment. The Australian Barramundi industry has on hand a large number of mature broodstock that are currently supplying the grow-out market, however, before selective breeding programs can begin, it is important to assess the levels of genetic diversity and relatedness of current captive broodstock populations.

Mass spawning hatchery practices using small broodstock populations, in addition to the cannibalistic nature of some fish species, contribute to a reduction of genetic diversity from parent to offspring and throughout the juvenile grow-out stages. This is of concern when establishing a selective breeding program for such species because the genetic diversity that is captured in the start-up and initial generations of the program is the basic ingredient for future genetic improvement. The aim of this thesis was to examine methods for capturing and conserving genetic diversity in mass spawning Barramundi (Lates calcarifer), when constructing a base population for a long-term selective breeding program for the species.

The results suggest that a mass spawning group of at least 30 Barramundi individuals is required to achieve a high participation rate of breeders and to limit the loss of genetic variation transferred to the offspring. Options for selecting candidates to compose a founding population were explored, and recommendations made to promote the longevity and impact of a selective breeding program for Barramundi.

Barramundi is naturally a mass spawning species, which can be induced to spawn in captivity under conditions that attempt to replicate the natural environment. The Australian Barramundi industry has on hand a large number of mature broodstock that are currently supplying the grow-out market, however, before selective breeding programs can begin, it is important to assess the levels of genetic diversity and relatedness of current captive broodstock populations.

Mass spawning hatchery practices using small broodstock populations, in addition to the cannibalistic nature of some fish species, contribute to a reduction of genetic diversity from parent to offspring and throughout the juvenile grow-out stages. This is of concern when establishing a selective breeding program for such species because the genetic diversity that is captured in the start-up and initial generations of the program is the basic ingredient for future genetic improvement. The aim of this thesis was to examine methods for capturing and conserving genetic diversity in mass spawning Barramundi (Lates calcarifer), when constructing a base population for a long-term selective breeding program for the species.

The results suggest that a mass spawning group of at least 30 Barramundi individuals is required to achieve a high participation rate of breeders and to limit the loss of genetic variation transferred to the offspring. Options for selecting candidates to compose a founding population were explored, and recommendations made to promote the longevity and impact of a selective breeding program for Barramundi.

Barramundi is naturally a mass spawning species, which can be induced to spawn in captivity under conditions that attempt to replicate the natural environment. The Australian Barramundi industry has on hand a large number of mature broodstock that are currently supplying the grow-out market, however, before selective breeding programs can begin, it is important to assess the levels of genetic diversity and relatedness of current captive broodstock populations.

Mass spawning hatchery practices using small broodstock populations, in addition to the cannibalistic nature of some fish species, contribute to a reduction of genetic diversity from parent to offspring and throughout the juvenile grow-out stages. This is of concern when establishing a selective breeding program for such species because the genetic diversity that is captured in the start-up and initial generations of the program is the basic ingredient for future genetic improvement. The aim of this thesis was to examine methods for capturing and conserving genetic diversity in mass spawning Barramundi (Lates calcarifer), when constructing a base population for a long-term selective breeding program for the species.

The results suggest that a mass spawning group of at least 30 Barramundi individuals is required to achieve a high participation rate of breeders and to limit the loss of genetic variation transferred to the offspring. Options for selecting candidates to compose a founding population were explored, and recommendations made to promote the longevity and impact of a selective breeding program for Barramundi.

Barramundi is naturally a mass spawning species, which can be induced to spawn in captivity under conditions that attempt to replicate the natural environment. The Australian Barramundi industry has on hand a large number of mature broodstock that are currently supplying the grow-out market, however, before selective breeding programs can begin, it is important to assess the levels of genetic diversity and relatedness of current captive broodstock populations.

Mass spawning hatchery practices using small broodstock populations, in addition to the cannibalistic nature of some fish species, contribute to a reduction of genetic diversity from parent to offspring and throughout the juvenile grow-out stages. This is of concern when establishing a selective breeding program for such species because the genetic diversity that is captured in the start-up and initial generations of the program is the basic ingredient for future genetic improvement. The aim of this thesis was to examine methods for capturing and conserving genetic diversity in mass spawning Barramundi (Lates calcarifer), when constructing a base population for a long-term selective breeding program for the species.

The results suggest that a mass spawning group of at least 30 Barramundi individuals is required to achieve a high participation rate of breeders and to limit the loss of genetic variation transferred to the offspring. Options for selecting candidates to compose a founding population were explored, and recommendations made to promote the longevity and impact of a selective breeding program for Barramundi.

Barramundi is naturally a mass spawning species, which can be induced to spawn in captivity under conditions that attempt to replicate the natural environment. The Australian Barramundi industry has on hand a large number of mature broodstock that are currently supplying the grow-out market, however, before selective breeding programs can begin, it is important to assess the levels of genetic diversity and relatedness of current captive broodstock populations.

Mass spawning hatchery practices using small broodstock populations, in addition to the cannibalistic nature of some fish species, contribute to a reduction of genetic diversity from parent to offspring and throughout the juvenile grow-out stages. This is of concern when establishing a selective breeding program for such species because the genetic diversity that is captured in the start-up and initial generations of the program is the basic ingredient for future genetic improvement. The aim of this thesis was to examine methods for capturing and conserving genetic diversity in mass spawning Barramundi (Lates calcarifer), when constructing a base population for a long-term selective breeding program for the species.

The results suggest that a mass spawning group of at least 30 Barramundi individuals is required to achieve a high participation rate of breeders and to limit the loss of genetic variation transferred to the offspring. Options for selecting candidates to compose a founding population were explored, and recommendations made to promote the longevity and impact of a selective breeding program for Barramundi.

Barramundi is naturally a mass spawning species, which can be induced to spawn in captivity under conditions that attempt to replicate the natural environment. The Australian Barramundi industry has on hand a large number of mature broodstock that are currently supplying the grow-out market, however, before selective breeding programs can begin, it is important to assess the levels of genetic diversity and relatedness of current captive broodstock populations.

Mass spawning hatchery practices using small broodstock populations, in addition to the cannibalistic nature of some fish species, contribute to a reduction of genetic diversity from parent to offspring and throughout the juvenile grow-out stages. This is of concern when establishing a selective breeding program for such species because the genetic diversity that is captured in the start-up and initial generations of the program is the basic ingredient for future genetic improvement. The aim of this thesis was to examine methods for capturing and conserving genetic diversity in mass spawning Barramundi (Lates calcarifer), when constructing a base population for a long-term selective breeding program for the species.

The results suggest that a mass spawning group of at least 30 Barramundi individuals is required to achieve a high participation rate of breeders and to limit the loss of genetic variation transferred to the offspring. Options for selecting candidates to compose a founding population were explored, and recommendations made to promote the longevity and impact of a selective breeding program for Barramundi.

Barramundi is naturally a mass spawning species, which can be induced to spawn in captivity under conditions that attempt to replicate the natural environment. The Australian Barramundi industry has on hand a large number of mature broodstock that are currently supplying the grow-out market, however, before selective breeding programs can begin, it is important to assess the levels of genetic diversity and relatedness of current captive broodstock populations.

Mass spawning hatchery practices using small broodstock populations, in addition to the cannibalistic nature of some fish species, contribute to a reduction of genetic diversity from parent to offspring and throughout the juvenile grow-out stages. This is of concern when establishing a selective breeding program for such species because the genetic diversity that is captured in the start-up and initial generations of the program is the basic ingredient for future genetic improvement. The aim of this thesis was to examine methods for capturing and conserving genetic diversity in mass spawning Barramundi (Lates calcarifer), when constructing a base population for a long-term selective breeding program for the species.

The results suggest that a mass spawning group of at least 30 Barramundi individuals is required to achieve a high participation rate of breeders and to limit the loss of genetic variation transferred to the offspring. Options for selecting candidates to compose a founding population were explored, and recommendations made to promote the longevity and impact of a selective breeding program for Barramundi.

Barramundi is naturally a mass spawning species, which can be induced to spawn in captivity under conditions that attempt to replicate the natural environment. The Australian Barramundi industry has on hand a large number of mature broodstock that are currently supplying the grow-out market, however, before selective breeding programs can begin, it is important to assess the levels of genetic diversity and relatedness of current captive broodstock populations.

Mass spawning hatchery practices using small broodstock populations, in addition to the cannibalistic nature of some fish species, contribute to a reduction of genetic diversity from parent to offspring and throughout the juvenile grow-out stages. This is of concern when establishing a selective breeding program for such species because the genetic diversity that is captured in the start-up and initial generations of the program is the basic ingredient for future genetic improvement. The aim of this thesis was to examine methods for capturing and conserving genetic diversity in mass spawning Barramundi (Lates calcarifer), when constructing a base population for a long-term selective breeding program for the species.

The results suggest that a mass spawning group of at least 30 Barramundi individuals is required to achieve a high participation rate of breeders and to limit the loss of genetic variation transferred to the offspring. Options for selecting candidates to compose a founding population were explored, and recommendations made to promote the longevity and impact of a selective breeding program for Barramundi.

Barramundi is naturally a mass spawning species, which can be induced to spawn in captivity under conditions that attempt to replicate the natural environment. The Australian Barramundi industry has on hand a large number of mature broodstock that are currently supplying the grow-out market, however, before selective breeding programs can begin, it is important to assess the levels of genetic diversity and relatedness of current captive broodstock populations.

Mass spawning hatchery practices using small broodstock populations, in addition to the cannibalistic nature of some fish species, contribute to a reduction of genetic diversity from parent to offspring and throughout the juvenile grow-out stages. This is of concern when establishing a selective breeding program for such species because the genetic diversity that is captured in the start-up and initial generations of the program is the basic ingredient for future genetic improvement. The aim of this thesis was to examine methods for capturing and conserving genetic diversity in mass spawning Barramundi (Lates calcarifer), when constructing a base population for a long-term selective breeding program for the species.

The results suggest that a mass spawning group of at least 30 Barramundi individuals is required to achieve a high participation rate of breeders and to limit the loss of genetic variation transferred to the offspring. Options for selecting candidates to compose a founding population were explored, and recommendations made to promote the longevity and impact of a selective breeding program for Barramundi.

Barramundi is naturally a mass spawning species, which can be induced to spawn in captivity under conditions that attempt to replicate the natural environment. The Australian Barramundi industry has on hand a large number of mature broodstock that are currently supplying the grow-out market, however, before selective breeding programs can begin, it is important to assess the levels of genetic diversity and relatedness of current captive broodstock populations.

Mass spawning hatchery practices using small broodstock populations, in addition to the cannibalistic nature of some fish species, contribute to a reduction of genetic diversity from parent to offspring and throughout the juvenile grow-out stages. This is of concern when establishing a selective breeding program for such species because the genetic diversity that is captured in the start-up and initial generations of the program is the basic ingredient for future genetic improvement. The aim of this thesis was to examine methods for capturing and conserving genetic diversity in mass spawning Barramundi (Lates calcarifer), when constructing a base population for a long-term selective breeding program for the species.

The results suggest that a mass spawning group of at least 30 Barramundi individuals is required to achieve a high participation rate of breeders and to limit the loss of genetic variation transferred to the offspring. Options for selecting candidates to compose a founding population were explored, and recommendations made to promote the longevity and impact of a selective breeding program for Barramundi.

Barramundi is naturally a mass spawning species, which can be induced to spawn in captivity under conditions that attempt to replicate the natural environment. The Australian Barramundi industry has on hand a large number of mature broodstock that are currently supplying the grow-out market, however, before selective breeding programs can begin, it is important to assess the levels of genetic diversity and relatedness of current captive broodstock populations.

Mass spawning hatchery practices using small broodstock populations, in addition to the cannibalistic nature of some fish species, contribute to a reduction of genetic diversity from parent to offspring and throughout the juvenile grow-out stages. This is of concern when establishing a selective breeding program for such species because the genetic diversity that is captured in the start-up and initial generations of the program is the basic ingredient for future genetic improvement. The aim of this thesis was to examine methods for capturing and conserving genetic diversity in mass spawning Barramundi (Lates calcarifer), when constructing a base population for a long-term selective breeding program for the species.

The results suggest that a mass spawning group of at least 30 Barramundi individuals is required to achieve a high participation rate of breeders and to limit the loss of genetic variation transferred to the offspring. Options for selecting candidates to compose a founding population were explored, and recommendations made to promote the longevity and impact of a selective breeding program for Barramundi.

Barramundi is naturally a mass spawning species, which can be induced to spawn in captivity under conditions that attempt to replicate the natural environment. The Australian Barramundi industry has on hand a large number of mature broodstock that are currently supplying the grow-out market, however, before selective breeding programs can begin, it is important to assess the levels of genetic diversity and relatedness of current captive broodstock populations.

Mass spawning hatchery practices using small broodstock populations, in addition to the cannibalistic nature of some fish species, contribute to a reduction of genetic diversity from parent to offspring and throughout the juvenile grow-out stages. This is of concern when establishing a selective breeding program for such species because the genetic diversity that is captured in the start-up and initial generations of the program is the basic ingredient for future genetic improvement. The aim of this thesis was to examine methods for capturing and conserving genetic diversity in mass spawning Barramundi (Lates calcarifer), when constructing a base population for a long-term selective breeding program for the species.

The results suggest that a mass spawning group of at least 30 Barramundi individuals is required to achieve a high participation rate of breeders and to limit the loss of genetic variation transferred to the offspring. Options for selecting candidates to compose a founding population were explored, and recommendations made to promote the longevity and impact of a selective breeding program for Barramundi.

Barramundi is naturally a mass spawning species, which can be induced to spawn in captivity under conditions that attempt to replicate the natural environment. The Australian Barramundi industry has on hand a large number of mature broodstock that are currently supplying the grow-out market, however, before selective breeding programs can begin, it is important to assess the levels of genetic diversity and relatedness of current captive broodstock populations.

Mass spawning hatchery practices using small broodstock populations, in addition to the cannibalistic nature of some fish species, contribute to a reduction of genetic diversity from parent to offspring and throughout the juvenile grow-out stages. This is of concern when establishing a selective breeding program for such species because the genetic diversity that is captured in the start-up and initial generations of the program is the basic ingredient for future genetic improvement. The aim of this thesis was to examine methods for capturing and conserving genetic diversity in mass spawning Barramundi (Lates calcarifer), when constructing a base population for a long-term selective breeding program for the species.

The results suggest that a mass spawning group of at least 30 Barramundi individuals is required to achieve a high participation rate of breeders and to limit the loss of genetic variation transferred to the offspring. Options for selecting candidates to compose a founding population were explored, and recommendations made to promote the longevity and impact of a selective breeding program for Barramundi.

Barramundi is naturally a mass spawning species, which can be induced to spawn in captivity under conditions that attempt to replicate the natural environment. The Australian Barramundi industry has on hand a large number of mature broodstock that are currently supplying the grow-out market, however, before selective breeding programs can begin, it is important to assess the levels of genetic diversity and relatedness of current captive broodstock populations.

Mass spawning hatchery practices using small broodstock populations, in addition to the cannibalistic nature of some fish species, contribute to a reduction of genetic diversity from parent to offspring and throughout the juvenile grow-out stages. This is of concern when establishing a selective breeding program for such species because the genetic diversity that is captured in the start-up and initial generations of the program is the basic ingredient for future genetic improvement. The aim of this thesis was to examine methods for capturing and conserving genetic diversity in mass spawning Barramundi (Lates calcarifer), when constructing a base population for a long-term selective breeding program for the species.

The results suggest that a mass spawning group of at least 30 Barramundi individuals is required to achieve a high participation rate of breeders and to limit the loss of genetic variation transferred to the offspring. Options for selecting candidates to compose a founding population were explored, and recommendations made to promote the longevity and impact of a selective breeding program for Barramundi.

Barramundi is naturally a mass spawning species, which can be induced to spawn in captivity under conditions that attempt to replicate the natural environment. The Australian Barramundi industry has on hand a large number of mature broodstock that are currently supplying the grow-out market, however, before selective breeding programs can begin, it is important to assess the levels of genetic diversity and relatedness of current captive broodstock populations.

Mass spawning hatchery practices using small broodstock populations, in addition to the cannibalistic nature of some fish species, contribute to a reduction of genetic diversity from parent to offspring and throughout the juvenile grow-out stages. This is of concern when establishing a selective breeding program for such species because the genetic diversity that is captured in the start-up and initial generations of the program is the basic ingredient for future genetic improvement. The aim of this thesis was to examine methods for capturing and conserving genetic diversity in mass spawning Barramundi (Lates calcarifer), when constructing a base population for a long-term selective breeding program for the species.

The results suggest that a mass spawning group of at least 30 Barramundi individuals is required to achieve a high participation rate of breeders and to limit the loss of genetic variation transferred to the offspring. Options for selecting candidates to compose a founding population were explored, and recommendations made to promote the longevity and impact of a selective breeding program for Barramundi.

Barramundi is naturally a mass spawning species, which can be induced to spawn in captivity under conditions that attempt to replicate the natural environment. The Australian Barramundi industry has on hand a large number of mature broodstock that are currently supplying the grow-out market, however, before selective breeding programs can begin, it is important to assess the levels of genetic diversity and relatedness of current captive broodstock populations.

Mass spawning hatchery practices using small broodstock populations, in addition to the cannibalistic nature of some fish species, contribute to a reduction of genetic diversity from parent to offspring and throughout the juvenile grow-out stages. This is of concern when establishing a selective breeding program for such species because the genetic diversity that is captured in the start-up and initial generations of the program is the basic ingredient for future genetic improvement. The aim of this thesis was to examine methods for capturing and conserving genetic diversity in mass spawning Barramundi (Lates calcarifer), when constructing a base population for a long-term selective breeding program for the species.

The results suggest that a mass spawning group of at least 30 Barramundi individuals is required to achieve a high participation rate of breeders and to limit the loss of genetic variation transferred to the offspring. Options for selecting candidates to compose a founding population were explored, and recommendations made to promote the longevity and impact of a selective breeding program for Barramundi.

Barramundi is naturally a mass spawning species, which can be induced to spawn in captivity under conditions that attempt to replicate the natural environment. The Australian Barramundi industry has on hand a large number of mature broodstock that are currently supplying the grow-out market, however, before selective breeding programs can begin, it is important to assess the levels of genetic diversity and relatedness of current captive broodstock populations.

Mass spawning hatchery practices using small broodstock populations, in addition to the cannibalistic nature of some fish species, contribute to a reduction of genetic diversity from parent to offspring and throughout the juvenile grow-out stages. This is of concern when establishing a selective breeding program for such species because the genetic diversity that is captured in the start-up and initial generations of the program is the basic ingredient for future genetic improvement. The aim of this thesis was to examine methods for capturing and conserving genetic diversity in mass spawning Barramundi (Lates calcarifer), when constructing a base population for a long-term selective breeding program for the species.

The results suggest that a mass spawning group of at least 30 Barramundi individuals is required to achieve a high participation rate of breeders and to limit the loss of genetic variation transferred to the offspring. Options for selecting candidates to compose a founding population were explored, and recommendations made to promote the longevity and impact of a selective breeding program for Barramundi.

Barramundi is naturally a mass spawning species, which can be induced to spawn in captivity under conditions that attempt to replicate the natural environment. The Australian Barramundi industry has on hand a large number of mature broodstock that are currently supplying the grow-out market, however, before selective breeding programs can begin, it is important to assess the levels of genetic diversity and relatedness of current captive broodstock populations.

Mass spawning hatchery practices using small broodstock populations, in addition to the cannibalistic nature of some fish species, contribute to a reduction of genetic diversity from parent to offspring and throughout the juvenile grow-out stages. This is of concern when establishing a selective breeding program for such species because the genetic diversity that is captured in the start-up and initial generations of the program is the basic ingredient for future genetic improvement. The aim of this thesis was to examine methods for capturing and conserving genetic diversity in mass spawning Barramundi (Lates calcarifer), when constructing a base population for a long-term selective breeding program for the species.

The results suggest that a mass spawning group of at least 30 Barramundi individuals is required to achieve a high participation rate of breeders and to limit the loss of genetic variation transferred to the offspring. Options for selecting candidates to compose a founding population were explored, and recommendations made to promote the longevity and impact of a selective breeding program for Barramundi.

Barramundi is naturally a mass spawning species, which can be induced to spawn in captivity under conditions that attempt to replicate the natural environment. The Australian Barramundi industry has on hand a large number of mature broodstock that are currently supplying the grow-out market, however, before selective breeding programs can begin, it is important to assess the levels of genetic diversity and relatedness of current captive broodstock populations.

Mass spawning hatchery practices using small broodstock populations, in addition to the cannibalistic nature of some fish species, contribute to a reduction of genetic diversity from parent to offspring and throughout the juvenile grow-out stages. This is of concern when establishing a selective breeding program for such species because the genetic diversity that is captured in the start-up and initial generations of the program is the basic ingredient for future genetic improvement. The aim of this thesis was to examine methods for capturing and conserving genetic diversity in mass spawning Barramundi (Lates calcarifer), when constructing a base population for a long-term selective breeding program for the species.

The results suggest that a mass spawning group of at least 30 Barramundi individuals is required to achieve a high participation rate of breeders and to limit the loss of genetic variation transferred to the offspring. Options for selecting candidates to compose a founding population were explored, and recommendations made to promote the longevity and impact of a selective breeding program for Barramundi.

Barramundi is naturally a mass spawning species, which can be induced to spawn in captivity under conditions that attempt to replicate the natural environment. The Australian Barramundi industry has on hand a large number of mature broodstock that are currently supplying the grow-out market, however, before selective breeding programs can begin, it is important to assess the levels of genetic diversity and relatedness of current captive broodstock populations.

Mass spawning hatchery practices using small broodstock populations, in addition to the cannibalistic nature of some fish species, contribute to a reduction of genetic diversity from parent to offspring and throughout the juvenile grow-out stages. This is of concern when establishing a selective breeding program for such species because the genetic diversity that is captured in the start-up and initial generations of the program is the basic ingredient for future genetic improvement. The aim of this thesis was to examine methods for capturing and conserving genetic diversity in mass spawning Barramundi (Lates calcarifer), when constructing a base population for a long-term selective breeding program for the species.

The results suggest that a mass spawning group of at least 30 Barramundi individuals is required to achieve a high participation rate of breeders and to limit the loss of genetic variation transferred to the offspring. Options for selecting candidates to compose a founding population were explored, and recommendations made to promote the longevity and impact of a selective breeding program for Barramundi.

Barramundi is naturally a mass spawning species, which can be induced to spawn in captivity under conditions that attempt to replicate the natural environment. The Australian Barramundi industry has on hand a large number of mature broodstock that are currently supplying the grow-out market, however, before selective breeding programs can begin, it is important to assess the levels of genetic diversity and relatedness of current captive broodstock populations.

Mass spawning hatchery practices using small broodstock populations, in addition to the cannibalistic nature of some fish species, contribute to a reduction of genetic diversity from parent to offspring and throughout the juvenile grow-out stages. This is of concern when establishing a selective breeding program for such species because the genetic diversity that is captured in the start-up and initial generations of the program is the basic ingredient for future genetic improvement. The aim of this thesis was to examine methods for capturing and conserving genetic diversity in mass spawning Barramundi (Lates calcarifer), when constructing a base population for a long-term selective breeding program for the species.

The results suggest that a mass spawning group of at least 30 Barramundi individuals is required to achieve a high participation rate of breeders and to limit the loss of genetic variation transferred to the offspring. Options for selecting candidates to compose a founding population were explored, and recommendations made to promote the longevity and impact of a selective breeding program for Barramundi.

Barramundi is naturally a mass spawning species, which can be induced to spawn in captivity under conditions that attempt to replicate the natural environment. The Australian Barramundi industry has on hand a large number of mature broodstock that are currently supplying the grow-out market, however, before selective breeding programs can begin, it is important to assess the levels of genetic diversity and relatedness of current captive broodstock populations.

Mass spawning hatchery practices using small broodstock populations, in addition to the cannibalistic nature of some fish species, contribute to a reduction of genetic diversity from parent to offspring and throughout the juvenile grow-out stages. This is of concern when establishing a selective breeding program for such species because the genetic diversity that is captured in the start-up and initial generations of the program is the basic ingredient for future genetic improvement. The aim of this thesis was to examine methods for capturing and conserving genetic diversity in mass spawning Barramundi (Lates calcarifer), when constructing a base population for a long-term selective breeding program for the species.

The results suggest that a mass spawning group of at least 30 Barramundi individuals is required to achieve a high participation rate of breeders and to limit the loss of genetic variation transferred to the offspring. Options for selecting candidates to compose a founding population were explored, and recommendations made to promote the longevity and impact of a selective breeding program for Barramundi.

Barramundi is naturally a mass spawning species, which can be induced to spawn in captivity under conditions that attempt to replicate the natural environment. The Australian Barramundi industry has on hand a large number of mature broodstock that are currently supplying the grow-out market, however, before selective breeding programs can begin, it is important to assess the levels of genetic diversity and relatedness of current captive broodstock populations.

Mass spawning hatchery practices using small broodstock populations, in addition to the cannibalistic nature of some fish species, contribute to a reduction of genetic diversity from parent to offspring and throughout the juvenile grow-out stages. This is of concern when establishing a selective breeding program for such species because the genetic diversity that is captured in the start-up and initial generations of the program is the basic ingredient for future genetic improvement. The aim of this thesis was to examine methods for capturing and conserving genetic diversity in mass spawning Barramundi (Lates calcarifer), when constructing a base population for a long-term selective breeding program for the species.

The results suggest that a mass spawning group of at least 30 Barramundi individuals is required to achieve a high participation rate of breeders and to limit the loss of genetic variation transferred to the offspring. Options for selecting candidates to compose a founding population were explored, and recommendations made to promote the longevity and impact of a selective breeding program for Barramundi.

Barramundi is naturally a mass spawning species, which can be induced to spawn in captivity under conditions that attempt to replicate the natural environment. The Australian Barramundi industry has on hand a large number of mature broodstock that are currently supplying the grow-out market, however, before selective breeding programs can begin, it is important to assess the levels of genetic diversity and relatedness of current captive broodstock populations.

Mass spawning hatchery practices using small broodstock populations, in addition to the cannibalistic nature of some fish species, contribute to a reduction of genetic diversity from parent to offspring and throughout the juvenile grow-out stages. This is of concern when establishing a selective breeding program for such species because the genetic diversity that is captured in the start-up and initial generations of the program is the basic ingredient for future genetic improvement. The aim of this thesis was to examine methods for capturing and conserving genetic diversity in mass spawning Barramundi (Lates calcarifer), when constructing a base population for a long-term selective breeding program for the species.

The results suggest that a mass spawning group of at least 30 Barramundi individuals is required to achieve a high participation rate of breeders and to limit the loss of genetic variation transferred to the offspring. Options for selecting candidates to compose a founding population were explored, and recommendations made to promote the longevity and impact of a selective breeding program for Barramundi.

Barramundi is naturally a mass spawning species, which can be induced to spawn in captivity under conditions that attempt to replicate the natural environment. The Australian Barramundi industry has on hand a large number of mature broodstock that are currently supplying the grow-out market, however, before selective breeding programs can begin, it is important to assess the levels of genetic diversity and relatedness of current captive broodstock populations.

Mass spawning hatchery practices using small broodstock populations, in addition to the cannibalistic nature of some fish species, contribute to a reduction of genetic diversity from parent to offspring and throughout the juvenile grow-out stages. This is of concern when establishing a selective breeding program for such species because the genetic diversity that is captured in the start-up and initial generations of the program is the basic ingredient for future genetic improvement. The aim of this thesis was to examine methods for capturing and conserving genetic diversity in mass spawning Barramundi (Lates calcarifer), when constructing a base population for a long-term selective breeding program for the species.

The results suggest that a mass spawning group of at least 30 Barramundi individuals is required to achieve a high participation rate of breeders and to limit the loss of genetic variation transferred to the offspring. Options for selecting candidates to compose a founding population were explored, and recommendations made to promote the longevity and impact of a selective breeding program for Barramundi.

Barramundi is naturally a mass spawning species, which can be induced to spawn in captivity under conditions that attempt to replicate the natural environment. The Australian Barramundi industry has on hand a large number of mature broodstock that are currently supplying the grow-out market, however, before selective breeding programs can begin, it is important to assess the levels of genetic diversity and relatedness of current captive broodstock populations.

Mass spawning hatchery practices using small broodstock populations, in addition to the cannibalistic nature of some fish species, contribute to a reduction of genetic diversity from parent to offspring and throughout the juvenile grow-out stages. This is of concern when establishing a selective breeding program for such species because the genetic diversity that is captured in the start-up and initial generations of the program is the basic ingredient for future genetic improvement. The aim of this thesis was to examine methods for capturing and conserving genetic diversity in mass spawning Barramundi (Lates calcarifer), when constructing a base population for a long-term selective breeding program for the species.

The results suggest that a mass spawning group of at least 30 Barramundi individuals is required to achieve a high participation rate of breeders and to limit the loss of genetic variation transferred to the offspring. Options for selecting candidates to compose a founding population were explored, and recommendations made to promote the longevity and impact of a selective breeding program for Barramundi.

Barramundi is naturally a mass spawning species, which can be induced to spawn in captivity under conditions that attempt to replicate the natural environment. The Australian Barramundi industry has on hand a large number of mature broodstock that are currently supplying the grow-out market, however, before selective breeding programs can begin, it is important to assess the levels of genetic diversity and relatedness of current captive broodstock populations.

Mass spawning hatchery practices using small broodstock populations, in addition to the cannibalistic nature of some fish species, contribute to a reduction of genetic diversity from parent to offspring and throughout the juvenile grow-out stages. This is of concern when establishing a selective breeding program for such species because the genetic diversity that is captured in the start-up and initial generations of the program is the basic ingredient for future genetic improvement. The aim of this thesis was to examine methods for capturing and conserving genetic diversity in mass spawning Barramundi (Lates calcarifer), when constructing a base population for a long-term selective breeding program for the species.

The results suggest that a mass spawning group of at least 30 Barramundi individuals is required to achieve a high participation rate of breeders and to limit the loss of genetic variation transferred to the offspring. Options for selecting candidates to compose a founding population were explored, and recommendations made to promote the longevity and impact of a selective breeding program for Barramundi.

Barramundi is naturally a mass spawning species, which can be induced to spawn in captivity under conditions that attempt to replicate the natural environment. The Australian Barramundi industry has on hand a large number of mature broodstock that are currently supplying the grow-out market, however, before selective breeding programs can begin, it is important to assess the levels of genetic diversity and relatedness of current captive broodstock populations.

Mass spawning hatchery practices using small broodstock populations, in addition to the cannibalistic nature of some fish species, contribute to a reduction of genetic diversity from parent to offspring and throughout the juvenile grow-out stages. This is of concern when establishing a selective breeding program for such species because the genetic diversity that is captured in the start-up and initial generations of the program is the basic ingredient for future genetic improvement. The aim of this thesis was to examine methods for capturing and conserving genetic diversity in mass spawning Barramundi (Lates calcarifer), when constructing a base population for a long-term selective breeding program for the species.

The results suggest that a mass spawning group of at least 30 Barramundi individuals is required to achieve a high participation rate of breeders and to limit the loss of genetic variation transferred to the offspring. Options for selecting candidates to compose a founding population were explored, and recommendations made to promote the longevity and impact of a selective breeding program for Barramundi.

Barramundi is naturally a mass spawning species, which can be induced to spawn in captivity under conditions that attempt to replicate the natural environment. The Australian Barramundi industry has on hand a large number of mature broodstock that are currently supplying the grow-out market, however, before selective breeding programs can begin, it is important to assess the levels of genetic diversity and relatedness of current captive broodstock populations.

Mass spawning hatchery practices using small broodstock populations, in addition to the cannibalistic nature of some fish species, contribute to a reduction of genetic diversity from parent to offspring and throughout the juvenile grow-out stages. This is of concern when establishing a selective breeding program for such species because the genetic diversity that is captured in the start-up and initial generations of the program is the basic ingredient for future genetic improvement. The aim of this thesis was to examine methods for capturing and conserving genetic diversity in mass spawning Barramundi (Lates calcarifer), when constructing a base population for a long-term selective breeding program for the species.

The results suggest that a mass spawning group of at least 30 Barramundi individuals is required to achieve a high participation rate of breeders and to limit the loss of genetic variation transferred to the offspring. Options for selecting candidates to compose a founding population were explored, and recommendations made to promote the longevity and impact of a selective breeding program for Barramundi.

Barramundi is naturally a mass spawning species, which can be induced to spawn in captivity under conditions that attempt to replicate the natural environment. The Australian Barramundi industry has on hand a large number of mature broodstock that are currently supplying the grow-out market, however, before selective breeding programs can begin, it is important to assess the levels of genetic diversity and relatedness of current captive broodstock populations.

Mass spawning hatchery practices using small broodstock populations, in addition to the cannibalistic nature of some fish species, contribute to a reduction of genetic diversity from parent to offspring and throughout the juvenile grow-out stages. This is of concern when establishing a selective breeding program for such species because the genetic diversity that is captured in the start-up and initial generations of the program is the basic ingredient for future genetic improvement. The aim of this thesis was to examine methods for capturing and conserving genetic diversity in mass spawning Barramundi (Lates calcarifer), when constructing a base population for a long-term selective breeding program for the species.

The results suggest that a mass spawning group of at least 30 Barramundi individuals is required to achieve a high participation rate of breeders and to limit the loss of genetic variation transferred to the offspring. Options for selecting candidates to compose a founding population were explored, and recommendations made to promote the longevity and impact of a selective breeding program for Barramundi.

Barramundi is naturally a mass spawning species, which can be induced to spawn in captivity under conditions that attempt to replicate the natural environment. The Australian Barramundi industry has on hand a large number of mature broodstock that are currently supplying the grow-out market, however, before selective breeding programs can begin, it is important to assess the levels of genetic diversity and relatedness of current captive broodstock populations.

Mass spawning hatchery practices using small broodstock populations, in addition to the cannibalistic nature of some fish species, contribute to a reduction of genetic diversity from parent to offspring and throughout the juvenile grow-out stages. This is of concern when establishing a selective breeding program for such species because the genetic diversity that is captured in the start-up and initial generations of the program is the basic ingredient for future genetic improvement. The aim of this thesis was to examine methods for capturing and conserving genetic diversity in mass spawning Barramundi (Lates calcarifer), when constructing a base population for a long-term selective breeding program for the species.

The results suggest that a mass spawning group of at least 30 Barramundi individuals is required to achieve a high participation rate of breeders and to limit the loss of genetic variation transferred to the offspring. Options for selecting candidates to compose a founding population were explored, and recommendations made to promote the longevity and impact of a selective breeding program for Barramundi.

Barramundi is naturally a mass spawning species, which can be induced to spawn in captivity under conditions that attempt to replicate the natural environment. The Australian Barramundi industry has on hand a large number of mature broodstock that are currently supplying the grow-out market, however, before selective breeding programs can begin, it is important to assess the levels of genetic diversity and relatedness of current captive broodstock populations.

Mass spawning hatchery practices using small broodstock populations, in addition to the cannibalistic nature of some fish species, contribute to a reduction of genetic diversity from parent to offspring and throughout the juvenile grow-out stages. This is of concern when establishing a selective breeding program for such species because the genetic diversity that is captured in the start-up and initial generations of the program is the basic ingredient for future genetic improvement. The aim of this thesis was to examine methods for capturing and conserving genetic diversity in mass spawning Barramundi (Lates calcarifer), when constructing a base population for a long-term selective breeding program for the species.

The results suggest that a mass spawning group of at least 30 Barramundi individuals is required to achieve a high participation rate of breeders and to limit the loss of genetic variation transferred to the offspring. Options for selecting candidates to compose a founding population were explored, and recommendations made to promote the longevity and impact of a selective breeding program for Barramundi.

Barramundi is naturally a mass spawning species, which can be induced to spawn in captivity under conditions that attempt to replicate the natural environment. The Australian Barramundi industry has on hand a large number of mature broodstock that are currently supplying the grow-out market, however, before selective breeding programs can begin, it is important to assess the levels of genetic diversity and relatedness of current captive broodstock populations.

Mass spawning hatchery practices using small broodstock populations, in addition to the cannibalistic nature of some fish species, contribute to a reduction of genetic diversity from parent to offspring and throughout the juvenile grow-out stages. This is of concern when establishing a selective breeding program for such species because the genetic diversity that is captured in the start-up and initial generations of the program is the basic ingredient for future genetic improvement. The aim of this thesis was to examine methods for capturing and conserving genetic diversity in mass spawning Barramundi (Lates calcarifer), when constructing a base population for a long-term selective breeding program for the species.

The results suggest that a mass spawning group of at least 30 Barramundi individuals is required to achieve a high participation rate of breeders and to limit the loss of genetic variation transferred to the offspring. Options for selecting candidates to compose a founding population were explored, and recommendations made to promote the longevity and impact of a selective breeding program for Barramundi.

Barramundi is naturally a mass spawning species, which can be induced to spawn in captivity under conditions that attempt to replicate the natural environment. The Australian Barramundi industry has on hand a large number of mature broodstock that are currently supplying the grow-out market, however, before selective breeding programs can begin, it is important to assess the levels of genetic diversity and relatedness of current captive broodstock populations.

Mass spawning hatchery practices using small broodstock populations, in addition to the cannibalistic nature of some fish species, contribute to a reduction of genetic diversity from parent to offspring and throughout the juvenile grow-out stages. This is of concern when establishing a selective breeding program for such species because the genetic diversity that is captured in the start-up and initial generations of the program is the basic ingredient for future genetic improvement. The aim of this thesis was to examine methods for capturing and conserving genetic diversity in mass spawning Barramundi (Lates calcarifer), when constructing a base population for a long-term selective breeding program for the species.

The results suggest that a mass spawning group of at least 30 Barramundi individuals is required to achieve a high participation rate of breeders and to limit the loss of genetic variation transferred to the offspring. Options for selecting candidates to compose a founding population were explored, and recommendations made to promote the longevity and impact of a selective breeding program for Barramundi.

Barramundi is naturally a mass spawning species, which can be induced to spawn in captivity under conditions that attempt to replicate the natural environment. The Australian Barramundi industry has on hand a large number of mature broodstock that are currently supplying the grow-out market, however, before selective breeding programs can begin, it is important to assess the levels of genetic diversity and relatedness of current captive broodstock populations.

Mass spawning hatchery practices using small broodstock populations, in addition to the cannibalistic nature of some fish species, contribute to a reduction of genetic diversity from parent to offspring and throughout the juvenile grow-out stages. This is of concern when establishing a selective breeding program for such species because the genetic diversity that is captured in the start-up and initial generations of the program is the basic ingredient for future genetic improvement. The aim of this thesis was to examine methods for capturing and conserving genetic diversity in mass spawning Barramundi (Lates calcarifer), when constructing a base population for a long-term selective breeding program for the species.

The results suggest that a mass spawning group of at least 30 Barramundi individuals is required to achieve a high participation rate of breeders and to limit the loss of genetic variation transferred to the offspring. Options for selecting candidates to compose a founding population were explored, and recommendations made to promote the longevity and impact of a selective breeding program for Barramundi.

Barramundi is naturally a mass spawning species, which can be induced to spawn in captivity under conditions that attempt to replicate the natural environment. The Australian Barramundi industry has on hand a large number of mature broodstock that are currently supplying the grow-out market, however, before selective breeding programs can begin, it is important to assess the levels of genetic diversity and relatedness of current captive broodstock populations.

Mass spawning hatchery practices using small broodstock populations, in addition to the cannibalistic nature of some fish species, contribute to a reduction of genetic diversity from parent to offspring and throughout the juvenile grow-out stages. This is of concern when establishing a selective breeding program for such species because the genetic diversity that is captured in the start-up and initial generations of the program is the basic ingredient for future genetic improvement. The aim of this thesis was to examine methods for capturing and conserving genetic diversity in mass spawning Barramundi (Lates calcarifer), when constructing a base population for a long-term selective breeding program for the species.

The results suggest that a mass spawning group of at least 30 Barramundi individuals is required to achieve a high participation rate of breeders and to limit the loss of genetic variation transferred to the offspring. Options for selecting candidates to compose a founding population were explored, and recommendations made to promote the longevity and impact of a selective breeding program for Barramundi.

Barramundi is naturally a mass spawning species, which can be induced to spawn in captivity under conditions that attempt to replicate the natural environment. The Australian Barramundi industry has on hand a large number of mature broodstock that are currently supplying the grow-out market, however, before selective breeding programs can begin, it is important to assess the levels of genetic diversity and relatedness of current captive broodstock populations.

Mass spawning hatchery practices using small broodstock populations, in addition to the cannibalistic nature of some fish species, contribute to a reduction of genetic diversity from parent to offspring and throughout the juvenile grow-out stages. This is of concern when establishing a selective breeding program for such species because the genetic diversity that is captured in the start-up and initial generations of the program is the basic ingredient for future genetic improvement. The aim of this thesis was to examine methods for capturing and conserving genetic diversity in mass spawning Barramundi (Lates calcarifer), when constructing a base population for a long-term selective breeding program for the species.

The results suggest that a mass spawning group of at least 30 Barramundi individuals is required to achieve a high participation rate of breeders and to limit the loss of genetic variation transferred to the offspring. Options for selecting candidates to compose a founding population were explored, and recommendations made to promote the longevity and impact of a selective breeding program for Barramundi.

Barramundi is naturally a mass spawning species, which can be induced to spawn in captivity under conditions that attempt to replicate the natural environment. The Australian Barramundi industry has on hand a large number of mature broodstock that are currently supplying the grow-out market, however, before selective breeding programs can begin, it is important to assess the levels of genetic diversity and relatedness of current captive broodstock populations.

Mass spawning hatchery practices using small broodstock populations, in addition to the cannibalistic nature of some fish species, contribute to a reduction of genetic diversity from parent to offspring and throughout the juvenile grow-out stages. This is of concern when establishing a selective breeding program for such species because the genetic diversity that is captured in the start-up and initial generations of the program is the basic ingredient for future genetic improvement. The aim of this thesis was to examine methods for capturing and conserving genetic diversity in mass spawning Barramundi (Lates calcarifer), when constructing a base population for a long-term selective breeding program for the species.

The results suggest that a mass spawning group of at least 30 Barramundi individuals is required to achieve a high participation rate of breeders and to limit the loss of genetic variation transferred to the offspring. Options for selecting candidates to compose a founding population were explored, and recommendations made to promote the longevity and impact of a selective breeding program for Barramundi.

Barramundi is naturally a mass spawning species, which can be induced to spawn in captivity under conditions that attempt to replicate the natural environment. The Australian Barramundi industry has on hand a large number of mature broodstock that are currently supplying the grow-out market, however, before selective breeding programs can begin, it is important to assess the levels of genetic diversity and relatedness of current captive broodstock populations.

Mass spawning hatchery practices using small broodstock populations, in addition to the cannibalistic nature of some fish species, contribute to a reduction of genetic diversity from parent to offspring and throughout the juvenile grow-out stages. This is of concern when establishing a selective breeding program for such species because the genetic diversity that is captured in the start-up and initial generations of the program is the basic ingredient for future genetic improvement. The aim of this thesis was to examine methods for capturing and conserving genetic diversity in mass spawning Barramundi (Lates calcarifer), when constructing a base population for a long-term selective breeding program for the species.

The results suggest that a mass spawning group of at least 30 Barramundi individuals is required to achieve a high participation rate of breeders and to limit the loss of genetic variation transferred to the offspring. Options for selecting candidates to compose a founding population were explored, and recommendations made to promote the longevity and impact of a selective breeding program for Barramundi.

Barramundi is naturally a mass spawning species, which can be induced to spawn in captivity under conditions that attempt to replicate the natural environment. The Australian Barramundi industry has on hand a large number of mature broodstock that are currently supplying the grow-out market, however, before selective breeding programs can begin, it is important to assess the levels of genetic diversity and relatedness of current captive broodstock populations.

Mass spawning hatchery practices using small broodstock populations, in addition to the cannibalistic nature of some fish species, contribute to a reduction of genetic diversity from parent to offspring and throughout the juvenile grow-out stages. This is of concern when establishing a selective breeding program for such species because the genetic diversity that is captured in the start-up and initial generations of the program is the basic ingredient for future genetic improvement. The aim of this thesis was to examine methods for capturing and conserving genetic diversity in mass spawning Barramundi (Lates calcarifer), when constructing a base population for a long-term selective breeding program for the species.

The results suggest that a mass spawning group of at least 30 Barramundi individuals is required to achieve a high participation rate of breeders and to limit the loss of genetic variation transferred to the offspring. Options for selecting candidates to compose a founding population were explored, and recommendations made to promote the longevity and impact of a selective breeding program for Barramundi.

Barramundi is naturally a mass spawning species, which can be induced to spawn in captivity under conditions that attempt to replicate the natural environment. The Australian Barramundi industry has on hand a large number of mature broodstock that are currently supplying the grow-out market, however, before selective breeding programs can begin, it is important to assess the levels of genetic diversity and relatedness of current captive broodstock populations.

Mass spawning hatchery practices using small broodstock populations, in addition to the cannibalistic nature of some fish species, contribute to a reduction of genetic diversity from parent to offspring and throughout the juvenile grow-out stages. This is of concern when establishing a selective breeding program for such species because the genetic diversity that is captured in the start-up and initial generations of the program is the basic ingredient for future genetic improvement. The aim of this thesis was to examine methods for capturing and conserving genetic diversity in mass spawning Barramundi (Lates calcarifer), when constructing a base population for a long-term selective breeding program for the species.

The results suggest that a mass spawning group of at least 30 Barramundi individuals is required to achieve a high participation rate of breeders and to limit the loss of genetic variation transferred to the offspring. Options for selecting candidates to compose a founding population were explored, and recommendations made to promote the longevity and impact of a selective breeding program for Barramundi.

Barramundi is naturally a mass spawning species, which can be induced to spawn in captivity under conditions that attempt to replicate the natural environment. The Australian Barramundi industry has on hand a large number of mature broodstock that are currently supplying the grow-out market, however, before selective breeding programs can begin, it is important to assess the levels of genetic diversity and relatedness of current captive broodstock populations.

Mass spawning hatchery practices using small broodstock populations, in addition to the cannibalistic nature of some fish species, contribute to a reduction of genetic diversity from parent to offspring and throughout the juvenile grow-out stages. This is of concern when establishing a selective breeding program for such species because the genetic diversity that is captured in the start-up and initial generations of the program is the basic ingredient for future genetic improvement. The aim of this thesis was to examine methods for capturing and conserving genetic diversity in mass spawning Barramundi (Lates calcarifer), when constructing a base population for a long-term selective breeding program for the species.

The results suggest that a mass spawning group of at least 30 Barramundi individuals is required to achieve a high participation rate of breeders and to limit the loss of genetic variation transferred to the offspring. Options for selecting candidates to compose a founding population were explored, and recommendations made to promote the longevity and impact of a selective breeding program for Barramundi.

Barramundi is naturally a mass spawning species, which can be induced to spawn in captivity under conditions that attempt to replicate the natural environment. The Australian Barramundi industry has on hand a large number of mature broodstock that are currently supplying the grow-out market, however, before selective breeding programs can begin, it is important to assess the levels of genetic diversity and relatedness of current captive broodstock populations.

Mass spawning hatchery practices using small broodstock populations, in addition to the cannibalistic nature of some fish species, contribute to a reduction of genetic diversity from parent to offspring and throughout the juvenile grow-out stages. This is of concern when establishing a selective breeding program for such species because the genetic diversity that is captured in the start-up and initial generations of the program is the basic ingredient for future genetic improvement. The aim of this thesis was to examine methods for capturing and conserving genetic diversity in mass spawning Barramundi (Lates calcarifer), when constructing a base population for a long-term selective breeding program for the species.

The results suggest that a mass spawning group of at least 30 Barramundi individuals is required to achieve a high participation rate of breeders and to limit the loss of genetic variation transferred to the offspring. Options for selecting candidates to compose a founding population were explored, and recommendations made to promote the longevity and impact of a selective breeding program for Barramundi.

Barramundi is naturally a mass spawning species, which can be induced to spawn in captivity under conditions that attempt to replicate the natural environment. The Australian Barramundi industry has on hand a large number of mature broodstock that are currently supplying the grow-out market, however, before selective breeding programs can begin, it is important to assess the levels of genetic diversity and relatedness of current captive broodstock populations.

Mass spawning hatchery practices using small broodstock populations, in addition to the cannibalistic nature of some fish species, contribute to a reduction of genetic diversity from parent to offspring and throughout the juvenile grow-out stages. This is of concern when establishing a selective breeding program for such species because the genetic diversity that is captured in the start-up and initial generations of the program is the basic ingredient for future genetic improvement. The aim of this thesis was to examine methods for capturing and conserving genetic diversity in mass spawning Barramundi (Lates calcarifer), when constructing a base population for a long-term selective breeding program for the species.

The results suggest that a mass spawning group of at least 30 Barramundi individuals is required to achieve a high participation rate of breeders and to limit the loss of genetic variation transferred to the offspring. Options for selecting candidates to compose a founding population were explored, and recommendations made to promote the longevity and impact of a selective breeding program for Barramundi.

Barramundi is naturally a mass spawning species, which can be induced to spawn in captivity under conditions that attempt to replicate the natural environment. The Australian Barramundi industry has on hand a large number of mature broodstock that are currently supplying the grow-out market, however, before selective breeding programs can begin, it is important to assess the levels of genetic diversity and relatedness of current captive broodstock populations.

Mass spawning hatchery practices using small broodstock populations, in addition to the cannibalistic nature of some fish species, contribute to a reduction of genetic diversity from parent to offspring and throughout the juvenile grow-out stages. This is of concern when establishing a selective breeding program for such species because the genetic diversity that is captured in the start-up and initial generations of the program is the basic ingredient for future genetic improvement. The aim of this thesis was to examine methods for capturing and conserving genetic diversity in mass spawning Barramundi (Lates calcarifer), when constructing a base population for a long-term selective breeding program for the species.

The results suggest that a mass spawning group of at least 30 Barramundi individuals is required to achieve a high participation rate of breeders and to limit the loss of genetic variation transferred to the offspring. Options for selecting candidates to compose a founding population were explored, and recommendations made to promote the longevity and impact of a selective breeding program for Barramundi.

Barramundi is naturally a mass spawning species, which can be induced to spawn in captivity under conditions that attempt to replicate the natural environment. The Australian Barramundi industry has on hand a large number of mature broodstock that are currently supplying the grow-out market, however, before selective breeding programs can begin, it is important to assess the levels of genetic diversity and relatedness of current captive broodstock populations.

Mass spawning hatchery practices using small broodstock populations, in addition to the cannibalistic nature of some fish species, contribute to a reduction of genetic diversity from parent to offspring and throughout the juvenile grow-out stages. This is of concern when establishing a selective breeding program for such species because the genetic diversity that is captured in the start-up and initial generations of the program is the basic ingredient for future genetic improvement. The aim of this thesis was to examine methods for capturing and conserving genetic diversity in mass spawning Barramundi (Lates calcarifer), when constructing a base population for a long-term selective breeding program for the species.

The results suggest that a mass spawning group of at least 30 Barramundi individuals is required to achieve a high participation rate of breeders and to limit the loss of genetic variation transferred to the offspring. Options for selecting candidates to compose a founding population were explored, and recommendations made to promote the longevity and impact of a selective breeding program for Barramundi.

Barramundi is naturally a mass spawning species, which can be induced to spawn in captivity under conditions that attempt to replicate the natural environment. The Australian Barramundi industry has on hand a large number of mature broodstock that are currently supplying the grow-out market, however, before selective breeding programs can begin, it is important to assess the levels of genetic diversity and relatedness of current captive broodstock populations.

Mass spawning hatchery practices using small broodstock populations, in addition to the cannibalistic nature of some fish species, contribute to a reduction of genetic diversity from parent to offspring and throughout the juvenile grow-out stages. This is of concern when establishing a selective breeding program for such species because the genetic diversity that is captured in the start-up and initial generations of the program is the basic ingredient for future genetic improvement. The aim of this thesis was to examine methods for capturing and conserving genetic diversity in mass spawning Barramundi (Lates calcarifer), when constructing a base population for a long-term selective breeding program for the species.

The results suggest that a mass spawning group of at least 30 Barramundi individuals is required to achieve a high participation rate of breeders and to limit the loss of genetic variation transferred to the offspring. Options for selecting candidates to compose a founding population were explored, and recommendations made to promote the longevity and impact of a selective breeding program for Barramundi.

Barramundi is naturally a mass spawning species, which can be induced to spawn in captivity under conditions that attempt to replicate the natural environment. The Australian Barramundi industry has on hand a large number of mature broodstock that are currently supplying the grow-out market, however, before selective breeding programs can begin, it is important to assess the levels of genetic diversity and relatedness of current captive broodstock populations.

Mass spawning hatchery practices using small broodstock populations, in addition to the cannibalistic nature of some fish species, contribute to a reduction of genetic diversity from parent to offspring and throughout the juvenile grow-out stages. This is of concern when establishing a selective breeding program for such species because the genetic diversity that is captured in the start-up and initial generations of the program is the basic ingredient for future genetic improvement. The aim of this thesis was to examine methods for capturing and conserving genetic diversity in mass spawning Barramundi (Lates calcarifer), when constructing a base population for a long-term selective breeding program for the species.

The results suggest that a mass spawning group of at least 30 Barramundi individuals is required to achieve a high participation rate of breeders and to limit the loss of genetic variation transferred to the offspring. Options for selecting candidates to compose a founding population were explored, and recommendations made to promote the longevity and impact of a selective breeding program for Barramundi.

Barramundi is naturally a mass spawning species, which can be induced to spawn in captivity under conditions that attempt to replicate the natural environment. The Australian Barramundi industry has on hand a large number of mature broodstock that are currently supplying the grow-out market, however, before selective breeding programs can begin, it is important to assess the levels of genetic diversity and relatedness of current captive broodstock populations.

Mass spawning hatchery practices using small broodstock populations, in addition to the cannibalistic nature of some fish species, contribute to a reduction of genetic diversity from parent to offspring and throughout the juvenile grow-out stages. This is of concern when establishing a selective breeding program for such species because the genetic diversity that is captured in the start-up and initial generations of the program is the basic ingredient for future genetic improvement. The aim of this thesis was to examine methods for capturing and conserving genetic diversity in mass spawning Barramundi (Lates calcarifer), when constructing a base population for a long-term selective breeding program for the species.

The results suggest that a mass spawning group of at least 30 Barramundi individuals is required to achieve a high participation rate of breeders and to limit the loss of genetic variation transferred to the offspring. Options for selecting candidates to compose a founding population were explored, and recommendations made to promote the longevity and impact of a selective breeding program for Barramundi.

Barramundi is naturally a mass spawning species, which can be induced to spawn in captivity under conditions that attempt to replicate the natural environment. The Australian Barramundi industry has on hand a large number of mature broodstock that are currently supplying the grow-out market, however, before selective breeding programs can begin, it is important to assess the levels of genetic diversity and relatedness of current captive broodstock populations.

Mass spawning hatchery practices using small broodstock populations, in addition to the cannibalistic nature of some fish species, contribute to a reduction of genetic diversity from parent to offspring and throughout the juvenile grow-out stages. This is of concern when establishing a selective breeding program for such species because the genetic diversity that is captured in the start-up and initial generations of the program is the basic ingredient for future genetic improvement. The aim of this thesis was to examine methods for capturing and conserving genetic diversity in mass spawning Barramundi (Lates calcarifer), when constructing a base population for a long-term selective breeding program for the species.

The results suggest that a mass spawning group of at least 30 Barramundi individuals is required to achieve a high participation rate of breeders and to limit the loss of genetic variation transferred to the offspring. Options for selecting candidates to compose a founding population were explored, and recommendations made to promote the longevity and impact of a selective breeding program for Barramundi.

Barramundi is naturally a mass spawning species, which can be induced to spawn in captivity under conditions that attempt to replicate the natural environment. The Australian Barramundi industry has on hand a large number of mature broodstock that are currently supplying the grow-out market, however, before selective breeding programs can begin, it is important to assess the levels of genetic diversity and relatedness of current captive broodstock populations.

Mass spawning hatchery practices using small broodstock populations, in addition to the cannibalistic nature of some fish species, contribute to a reduction of genetic diversity from parent to offspring and throughout the juvenile grow-out stages. This is of concern when establishing a selective breeding program for such species because the genetic diversity that is captured in the start-up and initial generations of the program is the basic ingredient for future genetic improvement. The aim of this thesis was to examine methods for capturing and conserving genetic diversity in mass spawning Barramundi (Lates calcarifer), when constructing a base population for a long-term selective breeding program for the species.

The results suggest that a mass spawning group of at least 30 Barramundi individuals is required to achieve a high participation rate of breeders and to limit the loss of genetic variation transferred to the offspring. Options for selecting candidates to compose a founding population were explored, and recommendations made to promote the longevity and impact of a selective breeding program for Barramundi.

Barramundi is naturally a mass spawning species, which can be induced to spawn in captivity under conditions that attempt to replicate the natural environment. The Australian Barramundi industry has on hand a large number of mature broodstock that are currently supplying the grow-out market, however, before selective breeding programs can begin, it is important to assess the levels of genetic diversity and relatedness of current captive broodstock populations.

Mass spawning hatchery practices using small broodstock populations, in addition to the cannibalistic nature of some fish species, contribute to a reduction of genetic diversity from parent to offspring and throughout the juvenile grow-out stages. This is of concern when establishing a selective breeding program for such species because the genetic diversity that is captured in the start-up and initial generations of the program is the basic ingredient for future genetic improvement. The aim of this thesis was to examine methods for capturing and conserving genetic diversity in mass spawning Barramundi (Lates calcarifer), when constructing a base population for a long-term selective breeding program for the species.

The results suggest that a mass spawning group of at least 30 Barramundi individuals is required to achieve a high participation rate of breeders and to limit the loss of genetic variation transferred to the offspring. Options for selecting candidates to compose a founding population were explored, and recommendations made to promote the longevity and impact of a selective breeding program for Barramundi.

Barramundi is naturally a mass spawning species, which can be induced to spawn in captivity under conditions that attempt to replicate the natural environment. The Australian Barramundi industry has on hand a large number of mature broodstock that are currently supplying the grow-out market, however, before selective breeding programs can begin, it is important to assess the levels of genetic diversity and relatedness of current captive broodstock populations.

Mass spawning hatchery practices using small broodstock populations, in addition to the cannibalistic nature of some fish species, contribute to a reduction of genetic diversity from parent to offspring and throughout the juvenile grow-out stages. This is of concern when establishing a selective breeding program for such species because the genetic diversity that is captured in the start-up and initial generations of the program is the basic ingredient for future genetic improvement. The aim of this thesis was to examine methods for capturing and conserving genetic diversity in mass spawning Barramundi (Lates calcarifer), when constructing a base population for a long-term selective breeding program for the species.

The results suggest that a mass spawning group of at least 30 Barramundi individuals is required to achieve a high participation rate of breeders and to limit the loss of genetic variation transferred to the offspring. Options for selecting candidates to compose a founding population were explored, and recommendations made to promote the longevity and impact of a selective breeding program for Barramundi.

Barramundi is naturally a mass spawning species, which can be induced to spawn in captivity under conditions that attempt to replicate the natural environment. The Australian Barramundi industry has on hand a large number of mature broodstock that are currently supplying the grow-out market, however, before selective breeding programs can begin, it is important to assess the levels of genetic diversity and relatedness of current captive broodstock populations.

Mass spawning hatchery practices using small broodstock populations, in addition to the cannibalistic nature of some fish species, contribute to a reduction of genetic diversity from parent to offspring and throughout the juvenile grow-out stages. This is of concern when establishing a selective breeding program for such species because the genetic diversity that is captured in the start-up and initial generations of the program is the basic ingredient for future genetic improvement. The aim of this thesis was to examine methods for capturing and conserving genetic diversity in mass spawning Barramundi (Lates calcarifer), when constructing a base population for a long-term selective breeding program for the species.

The results suggest that a mass spawning group of at least 30 Barramundi individuals is required to achieve a high participation rate of breeders and to limit the loss of genetic variation transferred to the offspring. Options for selecting candidates to compose a founding population were explored, and recommendations made to promote the longevity and impact of a selective breeding program for Barramundi.

Barramundi is naturally a mass spawning species, which can be induced to spawn in captivity under conditions that attempt to replicate the natural environment. The Australian Barramundi industry has on hand a large number of mature broodstock that are currently supplying the grow-out market, however, before selective breeding programs can begin, it is important to assess the levels of genetic diversity and relatedness of current captive broodstock populations.

Mass spawning hatchery practices using small broodstock populations, in addition to the cannibalistic nature of some fish species, contribute to a reduction of genetic diversity from parent to offspring and throughout the juvenile grow-out stages. This is of concern when establishing a selective breeding program for such species because the genetic diversity that is captured in the start-up and initial generations of the program is the basic ingredient for future genetic improvement. The aim of this thesis was to examine methods for capturing and conserving genetic diversity in mass spawning Barramundi (Lates calcarifer), when constructing a base population for a long-term selective breeding program for the species.

The results suggest that a mass spawning group of at least 30 Barramundi individuals is required to achieve a high participation rate of breeders and to limit the loss of genetic variation transferred to the offspring. Options for selecting candidates to compose a founding population were explored, and recommendations made to promote the longevity and impact of a selective breeding program for Barramundi.

Barramundi is naturally a mass spawning species, which can be induced to spawn in captivity under conditions that attempt to replicate the natural environment. The Australian Barramundi industry has on hand a large number of mature broodstock that are currently supplying the grow-out market, however, before selective breeding programs can begin, it is important to assess the levels of genetic diversity and relatedness of current captive broodstock populations.

Mass spawning hatchery practices using small broodstock populations, in addition to the cannibalistic nature of some fish species, contribute to a reduction of genetic diversity from parent to offspring and throughout the juvenile grow-out stages. This is of concern when establishing a selective breeding program for such species because the genetic diversity that is captured in the start-up and initial generations of the program is the basic ingredient for future genetic improvement. The aim of this thesis was to examine methods for capturing and conserving genetic diversity in mass spawning Barramundi (Lates calcarifer), when constructing a base population for a long-term selective breeding program for the species.

The results suggest that a mass spawning group of at least 30 Barramundi individuals is required to achieve a high participation rate of breeders and to limit the loss of genetic variation transferred to the offspring. Options for selecting candidates to compose a founding population were explored, and recommendations made to promote the longevity and impact of a selective breeding program for Barramundi.

Barramundi is naturally a mass spawning species, which can be induced to spawn in captivity under conditions that attempt to replicate the natural environment. The Australian Barramundi industry has on hand a large number of mature broodstock that are currently supplying the grow-out market, however, before selective breeding programs can begin, it is important to assess the levels of genetic diversity and relatedness of current captive broodstock populations.

Mass spawning hatchery practices using small broodstock populations, in addition to the cannibalistic nature of some fish species, contribute to a reduction of genetic diversity from parent to offspring and throughout the juvenile grow-out stages. This is of concern when establishing a selective breeding program for such species because the genetic diversity that is captured in the start-up and initial generations of the program is the basic ingredient for future genetic improvement. The aim of this thesis was to examine methods for capturing and conserving genetic diversity in mass spawning Barramundi (Lates calcarifer), when constructing a base population for a long-term selective breeding program for the species.

The results suggest that a mass spawning group of at least 30 Barramundi individuals is required to achieve a high participation rate of breeders and to limit the loss of genetic variation transferred to the offspring. Options for selecting candidates to compose a founding population were explored, and recommendations made to promote the longevity and impact of a selective breeding program for Barramundi.

Barramundi is naturally a mass spawning species, which can be induced to spawn in captivity under conditions that attempt to replicate the natural environment. The Australian Barramundi industry has on hand a large number of mature broodstock that are currently supplying the grow-out market, however, before selective breeding programs can begin, it is important to assess the levels of genetic diversity and relatedness of current captive broodstock populations.

Mass spawning hatchery practices using small broodstock populations, in addition to the cannibalistic nature of some fish species, contribute to a reduction of genetic diversity from parent to offspring and throughout the juvenile grow-out stages. This is of concern when establishing a selective breeding program for such species because the genetic diversity that is captured in the start-up and initial generations of the program is the basic ingredient for future genetic improvement. The aim of this thesis was to examine methods for capturing and conserving genetic diversity in mass spawning Barramundi (Lates calcarifer), when constructing a base population for a long-term selective breeding program for the species.

The results suggest that a mass spawning group of at least 30 Barramundi individuals is required to achieve a high participation rate of breeders and to limit the loss of genetic variation transferred to the offspring. Options for selecting candidates to compose a founding population were explored, and recommendations made to promote the longevity and impact of a selective breeding program for Barramundi.

Barramundi is naturally a mass spawning species, which can be induced to spawn in captivity under conditions that attempt to replicate the natural environment. The Australian Barramundi industry has on hand a large number of mature broodstock that are currently supplying the grow-out market, however, before selective breeding programs can begin, it is important to assess the levels of genetic diversity and relatedness of current captive broodstock populations.

Mass spawning hatchery practices using small broodstock populations, in addition to the cannibalistic nature of some fish species, contribute to a reduction of genetic diversity from parent to offspring and throughout the juvenile grow-out stages. This is of concern when establishing a selective breeding program for such species because the genetic diversity that is captured in the start-up and initial generations of the program is the basic ingredient for future genetic improvement. The aim of this thesis was to examine methods for capturing and conserving genetic diversity in mass spawning Barramundi (Lates calcarifer), when constructing a base population for a long-term selective breeding program for the species.

The results suggest that a mass spawning group of at least 30 Barramundi individuals is required to achieve a high participation rate of breeders and to limit the loss of genetic variation transferred to the offspring. Options for selecting candidates to compose a founding population were explored, and recommendations made to promote the longevity and impact of a selective breeding program for Barramundi.

Barramundi is naturally a mass spawning species, which can be induced to spawn in captivity under conditions that attempt to replicate the natural environment. The Australian Barramundi industry has on hand a large number of mature broodstock that are currently supplying the grow-out market, however, before selective breeding programs can begin, it is important to assess the levels of genetic diversity and relatedness of current captive broodstock populations.

Mass spawning hatchery practices using small broodstock populations, in addition to the cannibalistic nature of some fish species, contribute to a reduction of genetic diversity from parent to offspring and throughout the juvenile grow-out stages. This is of concern when establishing a selective breeding program for such species because the genetic diversity that is captured in the start-up and initial generations of the program is the basic ingredient for future genetic improvement. The aim of this thesis was to examine methods for capturing and conserving genetic diversity in mass spawning Barramundi (Lates calcarifer), when constructing a base population for a long-term selective breeding program for the species.

The results suggest that a mass spawning group of at least 30 Barramundi individuals is required to achieve a high participation rate of breeders and to limit the loss of genetic variation transferred to the offspring. Options for selecting candidates to compose a founding population were explored, and recommendations made to promote the longevity and impact of a selective breeding program for Barramundi.

Barramundi is naturally a mass spawning species, which can be induced to spawn in captivity under conditions that attempt to replicate the natural environment. The Australian Barramundi industry has on hand a large number of mature broodstock that are currently supplying the grow-out market, however, before selective breeding programs can begin, it is important to assess the levels of genetic diversity and relatedness of current captive broodstock populations.

Mass spawning hatchery practices using small broodstock populations, in addition to the cannibalistic nature of some fish species, contribute to a reduction of genetic diversity from parent to offspring and throughout the juvenile grow-out stages. This is of concern when establishing a selective breeding program for such species because the genetic diversity that is captured in the start-up and initial generations of the program is the basic ingredient for future genetic improvement. The aim of this thesis was to examine methods for capturing and conserving genetic diversity in mass spawning Barramundi (Lates calcarifer), when constructing a base population for a long-term selective breeding program for the species.

The results suggest that a mass spawning group of at least 30 Barramundi individuals is required to achieve a high participation rate of breeders and to limit the loss of genetic variation transferred to the offspring. Options for selecting candidates to compose a founding population were explored, and recommendations made to promote the longevity and impact of a selective breeding program for Barramundi.

Barramundi is naturally a mass spawning species, which can be induced to spawn in captivity under conditions that attempt to replicate the natural environment. The Australian Barramundi industry has on hand a large number of mature broodstock that are currently supplying the grow-out market, however, before selective breeding programs can begin, it is important to assess the levels of genetic diversity and relatedness of current captive broodstock populations.

Mass spawning hatchery practices using small broodstock populations, in addition to the cannibalistic nature of some fish species, contribute to a reduction of genetic diversity from parent to offspring and throughout the juvenile grow-out stages. This is of concern when establishing a selective breeding program for such species because the genetic diversity that is captured in the start-up and initial generations of the program is the basic ingredient for future genetic improvement. The aim of this thesis was to examine methods for capturing and conserving genetic diversity in mass spawning Barramundi (Lates calcarifer), when constructing a base population for a long-term selective breeding program for the species.

The results suggest that a mass spawning group of at least 30 Barramundi individuals is required to achieve a high participation rate of breeders and to limit the loss of genetic variation transferred to the offspring. Options for selecting candidates to compose a founding population were explored, and recommendations made to promote the longevity and impact of a selective breeding program for Barramundi.

Barramundi is naturally a mass spawning species, which can be induced to spawn in captivity under conditions that attempt to replicate the natural environment. The Australian Barramundi industry has on hand a large number of mature broodstock that are currently supplying the grow-out market, however, before selective breeding programs can begin, it is important to assess the levels of genetic diversity and relatedness of current captive broodstock populations.

Mass spawning hatchery practices using small broodstock populations, in addition to the cannibalistic nature of some fish species, contribute to a reduction of genetic diversity from parent to offspring and throughout the juvenile grow-out stages. This is of concern when establishing a selective breeding program for such species because the genetic diversity that is captured in the start-up and initial generations of the program is the basic ingredient for future genetic improvement. The aim of this thesis was to examine methods for capturing and conserving genetic diversity in mass spawning Barramundi (Lates calcarifer), when constructing a base population for a long-term selective breeding program for the species.

The results suggest that a mass spawning group of at least 30 Barramundi individuals is required to achieve a high participation rate of breeders and to limit the loss of genetic variation transferred to the offspring. Options for selecting candidates to compose a founding population were explored, and recommendations made to promote the longevity and impact of a selective breeding program for Barramundi.

Barramundi is naturally a mass spawning species, which can be induced to spawn in captivity under conditions that attempt to replicate the natural environment. The Australian Barramundi industry has on hand a large number of mature broodstock that are currently supplying the grow-out market, however, before selective breeding programs can begin, it is important to assess the levels of genetic diversity and relatedness of current captive broodstock populations.

Mass spawning hatchery practices using small broodstock populations, in addition to the cannibalistic nature of some fish species, contribute to a reduction of genetic diversity from parent to offspring and throughout the juvenile grow-out stages. This is of concern when establishing a selective breeding program for such species because the genetic diversity that is captured in the start-up and initial generations of the program is the basic ingredient for future genetic improvement. The aim of this thesis was to examine methods for capturing and conserving genetic diversity in mass spawning Barramundi (Lates calcarifer), when constructing a base population for a long-term selective breeding program for the species.

The results suggest that a mass spawning group of at least 30 Barramundi individuals is required to achieve a high participation rate of breeders and to limit the loss of genetic variation transferred to the offspring. Options for selecting candidates to compose a founding population were explored, and recommendations made to promote the longevity and impact of a selective breeding program for Barramundi.

Barramundi is naturally a mass spawning species, which can be induced to spawn in captivity under conditions that attempt to replicate the natural environment. The Australian Barramundi industry has on hand a large number of mature broodstock that are currently supplying the grow-out market, however, before selective breeding programs can begin, it is important to assess the levels of genetic diversity and relatedness of current captive broodstock populations.

Mass spawning hatchery practices using small broodstock populations, in addition to the cannibalistic nature of some fish species, contribute to a reduction of genetic diversity from parent to offspring and throughout the juvenile grow-out stages. This is of concern when establishing a selective breeding program for such species because the genetic diversity that is captured in the start-up and initial generations of the program is the basic ingredient for future genetic improvement. The aim of this thesis was to examine methods for capturing and conserving genetic diversity in mass spawning Barramundi (Lates calcarifer), when constructing a base population for a long-term selective breeding program for the species.

The results suggest that a mass spawning group of at least 30 Barramundi individuals is required to achieve a high participation rate of breeders and to limit the loss of genetic variation transferred to the offspring. Options for selecting candidates to compose a founding population were explored, and recommendations made to promote the longevity and impact of a selective breeding program for Barramundi.

Barramundi is naturally a mass spawning species, which can be induced to spawn in captivity under conditions that attempt to replicate the natural environment. The Australian Barramundi industry has on hand a large number of mature broodstock that are currently supplying the grow-out market, however, before selective breeding programs can begin, it is important to assess the levels of genetic diversity and relatedness of current captive broodstock populations.

Mass spawning hatchery practices using small broodstock populations, in addition to the cannibalistic nature of some fish species, contribute to a reduction of genetic diversity from parent to offspring and throughout the juvenile grow-out stages. This is of concern when establishing a selective breeding program for such species because the genetic diversity that is captured in the start-up and initial generations of the program is the basic ingredient for future genetic improvement. The aim of this thesis was to examine methods for capturing and conserving genetic diversity in mass spawning Barramundi (Lates calcarifer), when constructing a base population for a long-term selective breeding program for the species.

The results suggest that a mass spawning group of at least 30 Barramundi individuals is required to achieve a high participation rate of breeders and to limit the loss of genetic variation transferred to the offspring. Options for selecting candidates to compose a founding population were explored, and recommendations made to promote the longevity and impact of a selective breeding program for Barramundi.

Barramundi is naturally a mass spawning species, which can be induced to spawn in captivity under conditions that attempt to replicate the natural environment. The Australian Barramundi industry has on hand a large number of mature broodstock that are currently supplying the grow-out market, however, before selective breeding programs can begin, it is important to assess the levels of genetic diversity and relatedness of current captive broodstock populations.

Mass spawning hatchery practices using small broodstock populations, in addition to the cannibalistic nature of some fish species, contribute to a reduction of genetic diversity from parent to offspring and throughout the juvenile grow-out stages. This is of concern when establishing a selective breeding program for such species because the genetic diversity that is captured in the start-up and initial generations of the program is the basic ingredient for future genetic improvement. The aim of this thesis was to examine methods for capturing and conserving genetic diversity in mass spawning Barramundi (Lates calcarifer), when constructing a base population for a long-term selective breeding program for the species.

The results suggest that a mass spawning group of at least 30 Barramundi individuals is required to achieve a high participation rate of breeders and to limit the loss of genetic variation transferred to the offspring. Options for selecting candidates to compose a founding population were explored, and recommendations made to promote the longevity and impact of a selective breeding program for Barramundi.

Barramundi is naturally a mass spawning species, which can be induced to spawn in captivity under conditions that attempt to replicate the natural environment. The Australian Barramundi industry has on hand a large number of mature broodstock that are currently supplying the grow-out market, however, before selective breeding programs can begin, it is important to assess the levels of genetic diversity and relatedness of current captive broodstock populations.

Mass spawning hatchery practices using small broodstock populations, in addition to the cannibalistic nature of some fish species, contribute to a reduction of genetic diversity from parent to offspring and throughout the juvenile grow-out stages. This is of concern when establishing a selective breeding program for such species because the genetic diversity that is captured in the start-up and initial generations of the program is the basic ingredient for future genetic improvement. The aim of this thesis was to examine methods for capturing and conserving genetic diversity in mass spawning Barramundi (Lates calcarifer), when constructing a base population for a long-term selective breeding program for the species.

The results suggest that a mass spawning group of at least 30 Barramundi individuals is required to achieve a high participation rate of breeders and to limit the loss of genetic variation transferred to the offspring. Options for selecting candidates to compose a founding population were explored, and recommendations made to promote the longevity and impact of a selective breeding program for Barramundi.

Barramundi is naturally a mass spawning species, which can be induced to spawn in captivity under conditions that attempt to replicate the natural environment. The Australian Barramundi industry has on hand a large number of mature broodstock that are currently supplying the grow-out market, however, before selective breeding programs can begin, it is important to assess the levels of genetic diversity and relatedness of current captive broodstock populations.

Mass spawning hatchery practices using small broodstock populations, in addition to the cannibalistic nature of some fish species, contribute to a reduction of genetic diversity from parent to offspring and throughout the juvenile grow-out stages. This is of concern when establishing a selective breeding program for such species because the genetic diversity that is captured in the start-up and initial generations of the program is the basic ingredient for future genetic improvement. The aim of this thesis was to examine methods for capturing and conserving genetic diversity in mass spawning Barramundi (Lates calcarifer), when constructing a base population for a long-term selective breeding program for the species.

The results suggest that a mass spawning group of at least 30 Barramundi individuals is required to achieve a high participation rate of breeders and to limit the loss of genetic variation transferred to the offspring. Options for selecting candidates to compose a founding population were explored, and recommendations made to promote the longevity and impact of a selective breeding program for Barramundi.

Barramundi is naturally a mass spawning species, which can be induced to spawn in captivity under conditions that attempt to replicate the natural environment. The Australian Barramundi industry has on hand a large number of mature broodstock that are currently supplying the grow-out market, however, before selective breeding programs can begin, it is important to assess the levels of genetic diversity and relatedness of current captive broodstock populations.

Mass spawning hatchery practices using small broodstock populations, in addition to the cannibalistic nature of some fish species, contribute to a reduction of genetic diversity from parent to offspring and throughout the juvenile grow-out stages. This is of concern when establishing a selective breeding program for such species because the genetic diversity that is captured in the start-up and initial generations of the program is the basic ingredient for future genetic improvement. The aim of this thesis was to examine methods for capturing and conserving genetic diversity in mass spawning Barramundi (Lates calcarifer), when constructing a base population for a long-term selective breeding program for the species.

The results suggest that a mass spawning group of at least 30 Barramundi individuals is required to achieve a high participation rate of breeders and to limit the loss of genetic variation transferred to the offspring. Options for selecting candidates to compose a founding population were explored, and recommendations made to promote the longevity and impact of a selective breeding program for Barramundi.

Barramundi is naturally a mass spawning species, which can be induced to spawn in captivity under conditions that attempt to replicate the natural environment. The Australian Barramundi industry has on hand a large number of mature broodstock that are currently supplying the grow-out market, however, before selective breeding programs can begin, it is important to assess the levels of genetic diversity and relatedness of current captive broodstock populations.

Mass spawning hatchery practices using small broodstock populations, in addition to the cannibalistic nature of some fish species, contribute to a reduction of genetic diversity from parent to offspring and throughout the juvenile grow-out stages. This is of concern when establishing a selective breeding program for such species because the genetic diversity that is captured in the start-up and initial generations of the program is the basic ingredient for future genetic improvement. The aim of this thesis was to examine methods for capturing and conserving genetic diversity in mass spawning Barramundi (Lates calcarifer), when constructing a base population for a long-term selective breeding program for the species.

The results suggest that a mass spawning group of at least 30 Barramundi individuals is required to achieve a high participation rate of breeders and to limit the loss of genetic variation transferred to the offspring. Options for selecting candidates to compose a founding population were explored, and recommendations made to promote the longevity and impact of a selective breeding program for Barramundi.

Barramundi is naturally a mass spawning species, which can be induced to spawn in captivity under conditions that attempt to replicate the natural environment. The Australian Barramundi industry has on hand a large number of mature broodstock that are currently supplying the grow-out market, however, before selective breeding programs can begin, it is important to assess the levels of genetic diversity and relatedness of current captive broodstock populations.

Mass spawning hatchery practices using small broodstock populations, in addition to the cannibalistic nature of some fish species, contribute to a reduction of genetic diversity from parent to offspring and throughout the juvenile grow-out stages. This is of concern when establishing a selective breeding program for such species because the genetic diversity that is captured in the start-up and initial generations of the program is the basic ingredient for future genetic improvement. The aim of this thesis was to examine methods for capturing and conserving genetic diversity in mass spawning Barramundi (Lates calcarifer), when constructing a base population for a long-term selective breeding program for the species.

The results suggest that a mass spawning group of at least 30 Barramundi individuals is required to achieve a high participation rate of breeders and to limit the loss of genetic variation transferred to the offspring. Options for selecting candidates to compose a founding population were explored, and recommendations made to promote the longevity and impact of a selective breeding program for Barramundi.

Barramundi is naturally a mass spawning species, which can be induced to spawn in captivity under conditions that attempt to replicate the natural environment. The Australian Barramundi industry has on hand a large number of mature broodstock that are currently supplying the grow-out market, however, before selective breeding programs can begin, it is important to assess the levels of genetic diversity and relatedness of current captive broodstock populations.

Mass spawning hatchery practices using small broodstock populations, in addition to the cannibalistic nature of some fish species, contribute to a reduction of genetic diversity from parent to offspring and throughout the juvenile grow-out stages. This is of concern when establishing a selective breeding program for such species because the genetic diversity that is captured in the start-up and initial generations of the program is the basic ingredient for future genetic improvement. The aim of this thesis was to examine methods for capturing and conserving genetic diversity in mass spawning Barramundi (Lates calcarifer), when constructing a base population for a long-term selective breeding program for the species.

The results suggest that a mass spawning group of at least 30 Barramundi individuals is required to achieve a high participation rate of breeders and to limit the loss of genetic variation transferred to the offspring. Options for selecting candidates to compose a founding population were explored, and recommendations made to promote the longevity and impact of a selective breeding program for Barramundi.

Barramundi is naturally a mass spawning species, which can be induced to spawn in captivity under conditions that attempt to replicate the natural environment. The Australian Barramundi industry has on hand a large number of mature broodstock that are currently supplying the grow-out market, however, before selective breeding programs can begin, it is important to assess the levels of genetic diversity and relatedness of current captive broodstock populations.

Mass spawning hatchery practices using small broodstock populations, in addition to the cannibalistic nature of some fish species, contribute to a reduction of genetic diversity from parent to offspring and throughout the juvenile grow-out stages. This is of concern when establishing a selective breeding program for such species because the genetic diversity that is captured in the start-up and initial generations of the program is the basic ingredient for future genetic improvement. The aim of this thesis was to examine methods for capturing and conserving genetic diversity in mass spawning Barramundi (Lates calcarifer), when constructing a base population for a long-term selective breeding program for the species.

The results suggest that a mass spawning group of at least 30 Barramundi individuals is required to achieve a high participation rate of breeders and to limit the loss of genetic variation transferred to the offspring. Options for selecting candidates to compose a founding population were explored, and recommendations made to promote the longevity and impact of a selective breeding program for Barramundi.

Barramundi is naturally a mass spawning species, which can be induced to spawn in captivity under conditions that attempt to replicate the natural environment. The Australian Barramundi industry has on hand a large number of mature broodstock that are currently supplying the grow-out market, however, before selective breeding programs can begin, it is important to assess the levels of genetic diversity and relatedness of current captive broodstock populations.

Mass spawning hatchery practices using small broodstock populations, in addition to the cannibalistic nature of some fish species, contribute to a reduction of genetic diversity from parent to offspring and throughout the juvenile grow-out stages. This is of concern when establishing a selective breeding program for such species because the genetic diversity that is captured in the start-up and initial generations of the program is the basic ingredient for future genetic improvement. The aim of this thesis was to examine methods for capturing and conserving genetic diversity in mass spawning Barramundi (Lates calcarifer), when constructing a base population for a long-term selective breeding program for the species.

The results suggest that a mass spawning group of at least 30 Barramundi individuals is required to achieve a high participation rate of breeders and to limit the loss of genetic variation transferred to the offspring. Options for selecting candidates to compose a founding population were explored, and recommendations made to promote the longevity and impact of a selective breeding program for Barramundi.

Barramundi is naturally a mass spawning species, which can be induced to spawn in captivity under conditions that attempt to replicate the natural environment. The Australian Barramundi industry has on hand a large number of mature broodstock that are currently supplying the grow-out market, however, before selective breeding programs can begin, it is important to assess the levels of genetic diversity and relatedness of current captive broodstock populations.

Mass spawning hatchery practices using small broodstock populations, in addition to the cannibalistic nature of some fish species, contribute to a reduction of genetic diversity from parent to offspring and throughout the juvenile grow-out stages. This is of concern when establishing a selective breeding program for such species because the genetic diversity that is captured in the start-up and initial generations of the program is the basic ingredient for future genetic improvement. The aim of this thesis was to examine methods for capturing and conserving genetic diversity in mass spawning Barramundi (Lates calcarifer), when constructing a base population for a long-term selective breeding program for the species.

The results suggest that a mass spawning group of at least 30 Barramundi individuals is required to achieve a high participation rate of breeders and to limit the loss of genetic variation transferred to the offspring. Options for selecting candidates to compose a founding population were explored, and recommendations made to promote the longevity and impact of a selective breeding program for Barramundi.

Barramundi is naturally a mass spawning species, which can be induced to spawn in captivity under conditions that attempt to replicate the natural environment. The Australian Barramundi industry has on hand a large number of mature broodstock that are currently supplying the grow-out market, however, before selective breeding programs can begin, it is important to assess the levels of genetic diversity and relatedness of current captive broodstock populations.

Mass spawning hatchery practices using small broodstock populations, in addition to the cannibalistic nature of some fish species, contribute to a reduction of genetic diversity from parent to offspring and throughout the juvenile grow-out stages. This is of concern when establishing a selective breeding program for such species because the genetic diversity that is captured in the start-up and initial generations of the program is the basic ingredient for future genetic improvement. The aim of this thesis was to examine methods for capturing and conserving genetic diversity in mass spawning Barramundi (Lates calcarifer), when constructing a base population for a long-term selective breeding program for the species.

The results suggest that a mass spawning group of at least 30 Barramundi individuals is required to achieve a high participation rate of breeders and to limit the loss of genetic variation transferred to the offspring. Options for selecting candidates to compose a founding population were explored, and recommendations made to promote the longevity and impact of a selective breeding program for Barramundi.

Barramundi is naturally a mass spawning species, which can be induced to spawn in captivity under conditions that attempt to replicate the natural environment. The Australian Barramundi industry has on hand a large number of mature broodstock that are currently supplying the grow-out market, however, before selective breeding programs can begin, it is important to assess the levels of genetic diversity and relatedness of current captive broodstock populations.

Mass spawning hatchery practices using small broodstock populations, in addition to the cannibalistic nature of some fish species, contribute to a reduction of genetic diversity from parent to offspring and throughout the juvenile grow-out stages. This is of concern when establishing a selective breeding program for such species because the genetic diversity that is captured in the start-up and initial generations of the program is the basic ingredient for future genetic improvement. The aim of this thesis was to examine methods for capturing and conserving genetic diversity in mass spawning Barramundi (Lates calcarifer), when constructing a base population for a long-term selective breeding program for the species.

The results suggest that a mass spawning group of at least 30 Barramundi individuals is required to achieve a high participation rate of breeders and to limit the loss of genetic variation transferred to the offspring. Options for selecting candidates to compose a founding population were explored, and recommendations made to promote the longevity and impact of a selective breeding program for Barramundi.

Barramundi is naturally a mass spawning species, which can be induced to spawn in captivity under conditions that attempt to replicate the natural environment. The Australian Barramundi industry has on hand a large number of mature broodstock that are currently supplying the grow-out market, however, before selective breeding programs can begin, it is important to assess the levels of genetic diversity and relatedness of current captive broodstock populations.

Mass spawning hatchery practices using small broodstock populations, in addition to the cannibalistic nature of some fish species, contribute to a reduction of genetic diversity from parent to offspring and throughout the juvenile grow-out stages. This is of concern when establishing a selective breeding program for such species because the genetic diversity that is captured in the start-up and initial generations of the program is the basic ingredient for future genetic improvement. The aim of this thesis was to examine methods for capturing and conserving genetic diversity in mass spawning Barramundi (Lates calcarifer), when constructing a base population for a long-term selective breeding program for the species.

The results suggest that a mass spawning group of at least 30 Barramundi individuals is required to achieve a high participation rate of breeders and to limit the loss of genetic variation transferred to the offspring. Options for selecting candidates to compose a founding population were explored, and recommendations made to promote the longevity and impact of a selective breeding program for Barramundi.

Barramundi is naturally a mass spawning species, which can be induced to spawn in captivity under conditions that attempt to replicate the natural environment. The Australian Barramundi industry has on hand a large number of mature broodstock that are currently supplying the grow-out market, however, before selective breeding programs can begin, it is important to assess the levels of genetic diversity and relatedness of current captive broodstock populations.

Mass spawning hatchery practices using small broodstock populations, in addition to the cannibalistic nature of some fish species, contribute to a reduction of genetic diversity from parent to offspring and throughout the juvenile grow-out stages. This is of concern when establishing a selective breeding program for such species because the genetic diversity that is captured in the start-up and initial generations of the program is the basic ingredient for future genetic improvement. The aim of this thesis was to examine methods for capturing and conserving genetic diversity in mass spawning Barramundi (Lates calcarifer), when constructing a base population for a long-term selective breeding program for the species.

The results suggest that a mass spawning group of at least 30 Barramundi individuals is required to achieve a high participation rate of breeders and to limit the loss of genetic variation transferred to the offspring. Options for selecting candidates to compose a founding population were explored, and recommendations made to promote the longevity and impact of a selective breeding program for Barramundi.

Barramundi is naturally a mass spawning species, which can be induced to spawn in captivity under conditions that attempt to replicate the natural environment. The Australian Barramundi industry has on hand a large number of mature broodstock that are currently supplying the grow-out market, however, before selective breeding programs can begin, it is important to assess the levels of genetic diversity and relatedness of current captive broodstock populations.

Mass spawning hatchery practices using small broodstock populations, in addition to the cannibalistic nature of some fish species, contribute to a reduction of genetic diversity from parent to offspring and throughout the juvenile grow-out stages. This is of concern when establishing a selective breeding program for such species because the genetic diversity that is captured in the start-up and initial generations of the program is the basic ingredient for future genetic improvement. The aim of this thesis was to examine methods for capturing and conserving genetic diversity in mass spawning Barramundi (Lates calcarifer), when constructing a base population for a long-term selective breeding program for the species.

The results suggest that a mass spawning group of at least 30 Barramundi individuals is required to achieve a high participation rate of breeders and to limit the loss of genetic variation transferred to the offspring. Options for selecting candidates to compose a founding population were explored, and recommendations made to promote the longevity and impact of a selective breeding program for Barramundi.

Barramundi is naturally a mass spawning species, which can be induced to spawn in captivity under conditions that attempt to replicate the natural environment. The Australian Barramundi industry has on hand a large number of mature broodstock that are currently supplying the grow-out market, however, before selective breeding programs can begin, it is important to assess the levels of genetic diversity and relatedness of current captive broodstock populations.

Mass spawning hatchery practices using small broodstock populations, in addition to the cannibalistic nature of some fish species, contribute to a reduction of genetic diversity from parent to offspring and throughout the juvenile grow-out stages. This is of concern when establishing a selective breeding program for such species because the genetic diversity that is captured in the start-up and initial generations of the program is the basic ingredient for future genetic improvement. The aim of this thesis was to examine methods for capturing and conserving genetic diversity in mass spawning Barramundi (Lates calcarifer), when constructing a base population for a long-term selective breeding program for the species.

The results suggest that a mass spawning group of at least 30 Barramundi individuals is required to achieve a high participation rate of breeders and to limit the loss of genetic variation transferred to the offspring. Options for selecting candidates to compose a founding population were explored, and recommendations made to promote the longevity and impact of a selective breeding program for Barramundi.

Barramundi is naturally a mass spawning species, which can be induced to spawn in captivity under conditions that attempt to replicate the natural environment. The Australian Barramundi industry has on hand a large number of mature broodstock that are currently supplying the grow-out market, however, before selective breeding programs can begin, it is important to assess the levels of genetic diversity and relatedness of current captive broodstock populations.

Mass spawning hatchery practices using small broodstock populations, in addition to the cannibalistic nature of some fish species, contribute to a reduction of genetic diversity from parent to offspring and throughout the juvenile grow-out stages. This is of concern when establishing a selective breeding program for such species because the genetic diversity that is captured in the start-up and initial generations of the program is the basic ingredient for future genetic improvement. The aim of this thesis was to examine methods for capturing and conserving genetic diversity in mass spawning Barramundi (Lates calcarifer), when constructing a base population for a long-term selective breeding program for the species.

The results suggest that a mass spawning group of at least 30 Barramundi individuals is required to achieve a high participation rate of breeders and to limit the loss of genetic variation transferred to the offspring. Options for selecting candidates to compose a founding population were explored, and recommendations made to promote the longevity and impact of a selective breeding program for Barramundi.

Barramundi is naturally a mass spawning species, which can be induced to spawn in captivity under conditions that attempt to replicate the natural environment. The Australian Barramundi industry has on hand a large number of mature broodstock that are currently supplying the grow-out market, however, before selective breeding programs can begin, it is important to assess the levels of genetic diversity and relatedness of current captive broodstock populations.

Mass spawning hatchery practices using small broodstock populations, in addition to the cannibalistic nature of some fish species, contribute to a reduction of genetic diversity from parent to offspring and throughout the juvenile grow-out stages. This is of concern when establishing a selective breeding program for such species because the genetic diversity that is captured in the start-up and initial generations of the program is the basic ingredient for future genetic improvement. The aim of this thesis was to examine methods for capturing and conserving genetic diversity in mass spawning Barramundi (Lates calcarifer), when constructing a base population for a long-term selective breeding program for the species.

The results suggest that a mass spawning group of at least 30 Barramundi individuals is required to achieve a high participation rate of breeders and to limit the loss of genetic variation transferred to the offspring. Options for selecting candidates to compose a founding population were explored, and recommendations made to promote the longevity and impact of a selective breeding program for Barramundi.

Barramundi is naturally a mass spawning species, which can be induced to spawn in captivity under conditions that attempt to replicate the natural environment. The Australian Barramundi industry has on hand a large number of mature broodstock that are currently supplying the grow-out market, however, before selective breeding programs can begin, it is important to assess the levels of genetic diversity and relatedness of current captive broodstock populations.

Mass spawning hatchery practices using small broodstock populations, in addition to the cannibalistic nature of some fish species, contribute to a reduction of genetic diversity from parent to offspring and throughout the juvenile grow-out stages. This is of concern when establishing a selective breeding program for such species because the genetic diversity that is captured in the start-up and initial generations of the program is the basic ingredient for future genetic improvement. The aim of this thesis was to examine methods for capturing and conserving genetic diversity in mass spawning Barramundi (Lates calcarifer), when constructing a base population for a long-term selective breeding program for the species.

The results suggest that a mass spawning group of at least 30 Barramundi individuals is required to achieve a high participation rate of breeders and to limit the loss of genetic variation transferred to the offspring. Options for selecting candidates to compose a founding population were explored, and recommendations made to promote the longevity and impact of a selective breeding program for Barramundi.

Barramundi is naturally a mass spawning species, which can be induced to spawn in captivity under conditions that attempt to replicate the natural environment. The Australian Barramundi industry has on hand a large number of mature broodstock that are currently supplying the grow-out market, however, before selective breeding programs can begin, it is important to assess the levels of genetic diversity and relatedness of current captive broodstock populations.

Mass spawning hatchery practices using small broodstock populations, in addition to the cannibalistic nature of some fish species, contribute to a reduction of genetic diversity from parent to offspring and throughout the juvenile grow-out stages. This is of concern when establishing a selective breeding program for such species because the genetic diversity that is captured in the start-up and initial generations of the program is the basic ingredient for future genetic improvement. The aim of this thesis was to examine methods for capturing and conserving genetic diversity in mass spawning Barramundi (Lates calcarifer), when constructing a base population for a long-term selective breeding program for the species.

The results suggest that a mass spawning group of at least 30 Barramundi individuals is required to achieve a high participation rate of breeders and to limit the loss of genetic variation transferred to the offspring. Options for selecting candidates to compose a founding population were explored, and recommendations made to promote the longevity and impact of a selective breeding program for Barramundi.

Barramundi is naturally a mass spawning species, which can be induced to spawn in captivity under conditions that attempt to replicate the natural environment. The Australian Barramundi industry has on hand a large number of mature broodstock that are currently supplying the grow-out market, however, before selective breeding programs can begin, it is important to assess the levels of genetic diversity and relatedness of current captive broodstock populations.

Mass spawning hatchery practices using small broodstock populations, in addition to the cannibalistic nature of some fish species, contribute to a reduction of genetic diversity from parent to offspring and throughout the juvenile grow-out stages. This is of concern when establishing a selective breeding program for such species because the genetic diversity that is captured in the start-up and initial generations of the program is the basic ingredient for future genetic improvement. The aim of this thesis was to examine methods for capturing and conserving genetic diversity in mass spawning Barramundi (Lates calcarifer), when constructing a base population for a long-term selective breeding program for the species.

The results suggest that a mass spawning group of at least 30 Barramundi individuals is required to achieve a high participation rate of breeders and to limit the loss of genetic variation transferred to the offspring. Options for selecting candidates to compose a founding population were explored, and recommendations made to promote the longevity and impact of a selective breeding program for Barramundi.

Barramundi is naturally a mass spawning species, which can be induced to spawn in captivity under conditions that attempt to replicate the natural environment. The Australian Barramundi industry has on hand a large number of mature broodstock that are currently supplying the grow-out market, however, before selective breeding programs can begin, it is important to assess the levels of genetic diversity and relatedness of current captive broodstock populations.

Mass spawning hatchery practices using small broodstock populations, in addition to the cannibalistic nature of some fish species, contribute to a reduction of genetic diversity from parent to offspring and throughout the juvenile grow-out stages. This is of concern when establishing a selective breeding program for such species because the genetic diversity that is captured in the start-up and initial generations of the program is the basic ingredient for future genetic improvement. The aim of this thesis was to examine methods for capturing and conserving genetic diversity in mass spawning Barramundi (Lates calcarifer), when constructing a base population for a long-term selective breeding program for the species.

The results suggest that a mass spawning group of at least 30 Barramundi individuals is required to achieve a high participation rate of breeders and to limit the loss of genetic variation transferred to the offspring. Options for selecting candidates to compose a founding population were explored, and recommendations made to promote the longevity and impact of a selective breeding program for Barramundi.

Barramundi is naturally a mass spawning species, which can be induced to spawn in captivity under conditions that attempt to replicate the natural environment. The Australian Barramundi industry has on hand a large number of mature broodstock that are currently supplying the grow-out market, however, before selective breeding programs can begin, it is important to assess the levels of genetic diversity and relatedness of current captive broodstock populations.

Mass spawning hatchery practices using small broodstock populations, in addition to the cannibalistic nature of some fish species, contribute to a reduction of genetic diversity from parent to offspring and throughout the juvenile grow-out stages. This is of concern when establishing a selective breeding program for such species because the genetic diversity that is captured in the start-up and initial generations of the program is the basic ingredient for future genetic improvement. The aim of this thesis was to examine methods for capturing and conserving genetic diversity in mass spawning Barramundi (Lates calcarifer), when constructing a base population for a long-term selective breeding program for the species.

The results suggest that a mass spawning group of at least 30 Barramundi individuals is required to achieve a high participation rate of breeders and to limit the loss of genetic variation transferred to the offspring. Options for selecting candidates to compose a founding population were explored, and recommendations made to promote the longevity and impact of a selective breeding program for Barramundi.

Barramundi is naturally a mass spawning species, which can be induced to spawn in captivity under conditions that attempt to replicate the natural environment. The Australian Barramundi industry has on hand a large number of mature broodstock that are currently supplying the grow-out market, however, before selective breeding programs can begin, it is important to assess the levels of genetic diversity and relatedness of current captive broodstock populations.

Mass spawning hatchery practices using small broodstock populations, in addition to the cannibalistic nature of some fish species, contribute to a reduction of genetic diversity from parent to offspring and throughout the juvenile grow-out stages. This is of concern when establishing a selective breeding program for such species because the genetic diversity that is captured in the start-up and initial generations of the program is the basic ingredient for future genetic improvement. The aim of this thesis was to examine methods for capturing and conserving genetic diversity in mass spawning Barramundi (Lates calcarifer), when constructing a base population for a long-term selective breeding program for the species.

The results suggest that a mass spawning group of at least 30 Barramundi individuals is required to achieve a high participation rate of breeders and to limit the loss of genetic variation transferred to the offspring. Options for selecting candidates to compose a founding population were explored, and recommendations made to promote the longevity and impact of a selective breeding program for Barramundi.

Barramundi is naturally a mass spawning species, which can be induced to spawn in captivity under conditions that attempt to replicate the natural environment. The Australian Barramundi industry has on hand a large number of mature broodstock that are currently supplying the grow-out market, however, before selective breeding programs can begin, it is important to assess the levels of genetic diversity and relatedness of current captive broodstock populations.

Mass spawning hatchery practices using small broodstock populations, in addition to the cannibalistic nature of some fish species, contribute to a reduction of genetic diversity from parent to offspring and throughout the juvenile grow-out stages. This is of concern when establishing a selective breeding program for such species because the genetic diversity that is captured in the start-up and initial generations of the program is the basic ingredient for future genetic improvement. The aim of this thesis was to examine methods for capturing and conserving genetic diversity in mass spawning Barramundi (Lates calcarifer), when constructing a base population for a long-term selective breeding program for the species.

The results suggest that a mass spawning group of at least 30 Barramundi individuals is required to achieve a high participation rate of breeders and to limit the loss of genetic variation transferred to the offspring. Options for selecting candidates to compose a founding population were explored, and recommendations made to promote the longevity and impact of a selective breeding program for Barramundi.

Barramundi is naturally a mass spawning species, which can be induced to spawn in captivity under conditions that attempt to replicate the natural environment. The Australian Barramundi industry has on hand a large number of mature broodstock that are currently supplying the grow-out market, however, before selective breeding programs can begin, it is important to assess the levels of genetic diversity and relatedness of current captive broodstock populations.

Mass spawning hatchery practices using small broodstock populations, in addition to the cannibalistic nature of some fish species, contribute to a reduction of genetic diversity from parent to offspring and throughout the juvenile grow-out stages. This is of concern when establishing a selective breeding program for such species because the genetic diversity that is captured in the start-up and initial generations of the program is the basic ingredient for future genetic improvement. The aim of this thesis was to examine methods for capturing and conserving genetic diversity in mass spawning Barramundi (Lates calcarifer), when constructing a base population for a long-term selective breeding program for the species.

The results suggest that a mass spawning group of at least 30 Barramundi individuals is required to achieve a high participation rate of breeders and to limit the loss of genetic variation transferred to the offspring. Options for selecting candidates to compose a founding population were explored, and recommendations made to promote the longevity and impact of a selective breeding program for Barramundi.

Barramundi is naturally a mass spawning species, which can be induced to spawn in captivity under conditions that attempt to replicate the natural environment. The Australian Barramundi industry has on hand a large number of mature broodstock that are currently supplying the grow-out market, however, before selective breeding programs can begin, it is important to assess the levels of genetic diversity and relatedness of current captive broodstock populations.

Mass spawning hatchery practices using small broodstock populations, in addition to the cannibalistic nature of some fish species, contribute to a reduction of genetic diversity from parent to offspring and throughout the juvenile grow-out stages. This is of concern when establishing a selective breeding program for such species because the genetic diversity that is captured in the start-up and initial generations of the program is the basic ingredient for future genetic improvement. The aim of this thesis was to examine methods for capturing and conserving genetic diversity in mass spawning Barramundi (Lates calcarifer), when constructing a base population for a long-term selective breeding program for the species.

The results suggest that a mass spawning group of at least 30 Barramundi individuals is required to achieve a high participation rate of breeders and to limit the loss of genetic variation transferred to the offspring. Options for selecting candidates to compose a founding population were explored, and recommendations made to promote the longevity and impact of a selective breeding program for Barramundi.

Barramundi is naturally a mass spawning species, which can be induced to spawn in captivity under conditions that attempt to replicate the natural environment. The Australian Barramundi industry has on hand a large number of mature broodstock that are currently supplying the grow-out market, however, before selective breeding programs can begin, it is important to assess the levels of genetic diversity and relatedness of current captive broodstock populations.

Mass spawning hatchery practices using small broodstock populations, in addition to the cannibalistic nature of some fish species, contribute to a reduction of genetic diversity from parent to offspring and throughout the juvenile grow-out stages. This is of concern when establishing a selective breeding program for such species because the genetic diversity that is captured in the start-up and initial generations of the program is the basic ingredient for future genetic improvement. The aim of this thesis was to examine methods for capturing and conserving genetic diversity in mass spawning Barramundi (Lates calcarifer), when constructing a base population for a long-term selective breeding program for the species.

The results suggest that a mass spawning group of at least 30 Barramundi individuals is required to achieve a high participation rate of breeders and to limit the loss of genetic variation transferred to the offspring. Options for selecting candidates to compose a founding population were explored, and recommendations made to promote the longevity and impact of a selective breeding program for Barramundi.

Barramundi is naturally a mass spawning species, which can be induced to spawn in captivity under conditions that attempt to replicate the natural environment. The Australian Barramundi industry has on hand a large number of mature broodstock that are currently supplying the grow-out market, however, before selective breeding programs can begin, it is important to assess the levels of genetic diversity and relatedness of current captive broodstock populations.

Mass spawning hatchery practices using small broodstock populations, in addition to the cannibalistic nature of some fish species, contribute to a reduction of genetic diversity from parent to offspring and throughout the juvenile grow-out stages. This is of concern when establishing a selective breeding program for such species because the genetic diversity that is captured in the start-up and initial generations of the program is the basic ingredient for future genetic improvement. The aim of this thesis was to examine methods for capturing and conserving genetic diversity in mass spawning Barramundi (Lates calcarifer), when constructing a base population for a long-term selective breeding program for the species.

The results suggest that a mass spawning group of at least 30 Barramundi individuals is required to achieve a high participation rate of breeders and to limit the loss of genetic variation transferred to the offspring. Options for selecting candidates to compose a founding population were explored, and recommendations made to promote the longevity and impact of a selective breeding program for Barramundi.

Barramundi is naturally a mass spawning species, which can be induced to spawn in captivity under conditions that attempt to replicate the natural environment. The Australian Barramundi industry has on hand a large number of mature broodstock that are currently supplying the grow-out market, however, before selective breeding programs can begin, it is important to assess the levels of genetic diversity and relatedness of current captive broodstock populations.

Mass spawning hatchery practices using small broodstock populations, in addition to the cannibalistic nature of some fish species, contribute to a reduction of genetic diversity from parent to offspring and throughout the juvenile grow-out stages. This is of concern when establishing a selective breeding program for such species because the genetic diversity that is captured in the start-up and initial generations of the program is the basic ingredient for future genetic improvement. The aim of this thesis was to examine methods for capturing and conserving genetic diversity in mass spawning Barramundi (Lates calcarifer), when constructing a base population for a long-term selective breeding program for the species.

The results suggest that a mass spawning group of at least 30 Barramundi individuals is required to achieve a high participation rate of breeders and to limit the loss of genetic variation transferred to the offspring. Options for selecting candidates to compose a founding population were explored, and recommendations made to promote the longevity and impact of a selective breeding program for Barramundi.

Barramundi is naturally a mass spawning species, which can be induced to spawn in captivity under conditions that attempt to replicate the natural environment. The Australian Barramundi industry has on hand a large number of mature broodstock that are currently supplying the grow-out market, however, before selective breeding programs can begin, it is important to assess the levels of genetic diversity and relatedness of current captive broodstock populations.

Mass spawning hatchery practices using small broodstock populations, in addition to the cannibalistic nature of some fish species, contribute to a reduction of genetic diversity from parent to offspring and throughout the juvenile grow-out stages. This is of concern when establishing a selective breeding program for such species because the genetic diversity that is captured in the start-up and initial generations of the program is the basic ingredient for future genetic improvement. The aim of this thesis was to examine methods for capturing and conserving genetic diversity in mass spawning Barramundi (Lates calcarifer), when constructing a base population for a long-term selective breeding program for the species.

The results suggest that a mass spawning group of at least 30 Barramundi individuals is required to achieve a high participation rate of breeders and to limit the loss of genetic variation transferred to the offspring. Options for selecting candidates to compose a founding population were explored, and recommendations made to promote the longevity and impact of a selective breeding program for Barramundi.

Barramundi is naturally a mass spawning species, which can be induced to spawn in captivity under conditions that attempt to replicate the natural environment. The Australian Barramundi industry has on hand a large number of mature broodstock that are currently supplying the grow-out market, however, before selective breeding programs can begin, it is important to assess the levels of genetic diversity and relatedness of current captive broodstock populations.

Mass spawning hatchery practices using small broodstock populations, in addition to the cannibalistic nature of some fish species, contribute to a reduction of genetic diversity from parent to offspring and throughout the juvenile grow-out stages. This is of concern when establishing a selective breeding program for such species because the genetic diversity that is captured in the start-up and initial generations of the program is the basic ingredient for future genetic improvement. The aim of this thesis was to examine methods for capturing and conserving genetic diversity in mass spawning Barramundi (Lates calcarifer), when constructing a base population for a long-term selective breeding program for the species.

The results suggest that a mass spawning group of at least 30 Barramundi individuals is required to achieve a high participation rate of breeders and to limit the loss of genetic variation transferred to the offspring. Options for selecting candidates to compose a founding population were explored, and recommendations made to promote the longevity and impact of a selective breeding program for Barramundi.

Barramundi is naturally a mass spawning species, which can be induced to spawn in captivity under conditions that attempt to replicate the natural environment. The Australian Barramundi industry has on hand a large number of mature broodstock that are currently supplying the grow-out market, however, before selective breeding programs can begin, it is important to assess the levels of genetic diversity and relatedness of current captive broodstock populations.

Mass spawning hatchery practices using small broodstock populations, in addition to the cannibalistic nature of some fish species, contribute to a reduction of genetic diversity from parent to offspring and throughout the juvenile grow-out stages. This is of concern when establishing a selective breeding program for such species because the genetic diversity that is captured in the start-up and initial generations of the program is the basic ingredient for future genetic improvement. The aim of this thesis was to examine methods for capturing and conserving genetic diversity in mass spawning Barramundi (Lates calcarifer), when constructing a base population for a long-term selective breeding program for the species.

The results suggest that a mass spawning group of at least 30 Barramundi individuals is required to achieve a high participation rate of breeders and to limit the loss of genetic variation transferred to the offspring. Options for selecting candidates to compose a founding population were explored, and recommendations made to promote the longevity and impact of a selective breeding program for Barramundi.

Barramundi is naturally a mass spawning species, which can be induced to spawn in captivity under conditions that attempt to replicate the natural environment. The Australian Barramundi industry has on hand a large number of mature broodstock that are currently supplying the grow-out market, however, before selective breeding programs can begin, it is important to assess the levels of genetic diversity and relatedness of current captive broodstock populations.

Mass spawning hatchery practices using small broodstock populations, in addition to the cannibalistic nature of some fish species, contribute to a reduction of genetic diversity from parent to offspring and throughout the juvenile grow-out stages. This is of concern when establishing a selective breeding program for such species because the genetic diversity that is captured in the start-up and initial generations of the program is the basic ingredient for future genetic improvement. The aim of this thesis was to examine methods for capturing and conserving genetic diversity in mass spawning Barramundi (Lates calcarifer), when constructing a base population for a long-term selective breeding program for the species.

The results suggest that a mass spawning group of at least 30 Barramundi individuals is required to achieve a high participation rate of breeders and to limit the loss of genetic variation transferred to the offspring. Options for selecting candidates to compose a founding population were explored, and recommendations made to promote the longevity and impact of a selective breeding program for Barramundi.

Barramundi is naturally a mass spawning species, which can be induced to spawn in captivity under conditions that attempt to replicate the natural environment. The Australian Barramundi industry has on hand a large number of mature broodstock that are currently supplying the grow-out market, however, before selective breeding programs can begin, it is important to assess the levels of genetic diversity and relatedness of current captive broodstock populations.

Mass spawning hatchery practices using small broodstock populations, in addition to the cannibalistic nature of some fish species, contribute to a reduction of genetic diversity from parent to offspring and throughout the juvenile grow-out stages. This is of concern when establishing a selective breeding program for such species because the genetic diversity that is captured in the start-up and initial generations of the program is the basic ingredient for future genetic improvement. The aim of this thesis was to examine methods for capturing and conserving genetic diversity in mass spawning Barramundi (Lates calcarifer), when constructing a base population for a long-term selective breeding program for the species.

The results suggest that a mass spawning group of at least 30 Barramundi individuals is required to achieve a high participation rate of breeders and to limit the loss of genetic variation transferred to the offspring. Options for selecting candidates to compose a founding population were explored, and recommendations made to promote the longevity and impact of a selective breeding program for Barramundi.

Barramundi is naturally a mass spawning species, which can be induced to spawn in captivity under conditions that attempt to replicate the natural environment. The Australian Barramundi industry has on hand a large number of mature broodstock that are currently supplying the grow-out market, however, before selective breeding programs can begin, it is important to assess the levels of genetic diversity and relatedness of current captive broodstock populations.

Mass spawning hatchery practices using small broodstock populations, in addition to the cannibalistic nature of some fish species, contribute to a reduction of genetic diversity from parent to offspring and throughout the juvenile grow-out stages. This is of concern when establishing a selective breeding program for such species because the genetic diversity that is captured in the start-up and initial generations of the program is the basic ingredient for future genetic improvement. The aim of this thesis was to examine methods for capturing and conserving genetic diversity in mass spawning Barramundi (Lates calcarifer), when constructing a base population for a long-term selective breeding program for the species.

The results suggest that a mass spawning group of at least 30 Barramundi individuals is required to achieve a high participation rate of breeders and to limit the loss of genetic variation transferred to the offspring. Options for selecting candidates to compose a founding population were explored, and recommendations made to promote the longevity and impact of a selective breeding program for Barramundi.

Barramundi is naturally a mass spawning species, which can be induced to spawn in captivity under conditions that attempt to replicate the natural environment. The Australian Barramundi industry has on hand a large number of mature broodstock that are currently supplying the grow-out market, however, before selective breeding programs can begin, it is important to assess the levels of genetic diversity and relatedness of current captive broodstock populations.

Mass spawning hatchery practices using small broodstock populations, in addition to the cannibalistic nature of some fish species, contribute to a reduction of genetic diversity from parent to offspring and throughout the juvenile grow-out stages. This is of concern when establishing a selective breeding program for such species because the genetic diversity that is captured in the start-up and initial generations of the program is the basic ingredient for future genetic improvement. The aim of this thesis was to examine methods for capturing and conserving genetic diversity in mass spawning Barramundi (Lates calcarifer), when constructing a base population for a long-term selective breeding program for the species.

The results suggest that a mass spawning group of at least 30 Barramundi individuals is required to achieve a high participation rate of breeders and to limit the loss of genetic variation transferred to the offspring. Options for selecting candidates to compose a founding population were explored, and recommendations made to promote the longevity and impact of a selective breeding program for Barramundi.

Barramundi is naturally a mass spawning species, which can be induced to spawn in captivity under conditions that attempt to replicate the natural environment. The Australian Barramundi industry has on hand a large number of mature broodstock that are currently supplying the grow-out market, however, before selective breeding programs can begin, it is important to assess the levels of genetic diversity and relatedness of current captive broodstock populations.

Mass spawning hatchery practices using small broodstock populations, in addition to the cannibalistic nature of some fish species, contribute to a reduction of genetic diversity from parent to offspring and throughout the juvenile grow-out stages. This is of concern when establishing a selective breeding program for such species because the genetic diversity that is captured in the start-up and initial generations of the program is the basic ingredient for future genetic improvement. The aim of this thesis was to examine methods for capturing and conserving genetic diversity in mass spawning Barramundi (Lates calcarifer), when constructing a base population for a long-term selective breeding program for the species.

The results suggest that a mass spawning group of at least 30 Barramundi individuals is required to achieve a high participation rate of breeders and to limit the loss of genetic variation transferred to the offspring. Options for selecting candidates to compose a founding population were explored, and recommendations made to promote the longevity and impact of a selective breeding program for Barramundi.

Barramundi is naturally a mass spawning species, which can be induced to spawn in captivity under conditions that attempt to replicate the natural environment. The Australian Barramundi industry has on hand a large number of mature broodstock that are currently supplying the grow-out market, however, before selective breeding programs can begin, it is important to assess the levels of genetic diversity and relatedness of current captive broodstock populations.

Mass spawning hatchery practices using small broodstock populations, in addition to the cannibalistic nature of some fish species, contribute to a reduction of genetic diversity from parent to offspring and throughout the juvenile grow-out stages. This is of concern when establishing a selective breeding program for such species because the genetic diversity that is captured in the start-up and initial generations of the program is the basic ingredient for future genetic improvement. The aim of this thesis was to examine methods for capturing and conserving genetic diversity in mass spawning Barramundi (Lates calcarifer), when constructing a base population for a long-term selective breeding program for the species.

The results suggest that a mass spawning group of at least 30 Barramundi individuals is required to achieve a high participation rate of breeders and to limit the loss of genetic variation transferred to the offspring. Options for selecting candidates to compose a founding population were explored, and recommendations made to promote the longevity and impact of a selective breeding program for Barramundi.

Barramundi is naturally a mass spawning species, which can be induced to spawn in captivity under conditions that attempt to replicate the natural environment. The Australian Barramundi industry has on hand a large number of mature broodstock that are currently supplying the grow-out market, however, before selective breeding programs can begin, it is important to assess the levels of genetic diversity and relatedness of current captive broodstock populations.

Mass spawning hatchery practices using small broodstock populations, in addition to the cannibalistic nature of some fish species, contribute to a reduction of genetic diversity from parent to offspring and throughout the juvenile grow-out stages. This is of concern when establishing a selective breeding program for such species because the genetic diversity that is captured in the start-up and initial generations of the program is the basic ingredient for future genetic improvement. The aim of this thesis was to examine methods for capturing and conserving genetic diversity in mass spawning Barramundi (Lates calcarifer), when constructing a base population for a long-term selective breeding program for the species.

The results suggest that a mass spawning group of at least 30 Barramundi individuals is required to achieve a high participation rate of breeders and to limit the loss of genetic variation transferred to the offspring. Options for selecting candidates to compose a founding population were explored, and recommendations made to promote the longevity and impact of a selective breeding program for Barramundi.

Barramundi is naturally a mass spawning species, which can be induced to spawn in captivity under conditions that attempt to replicate the natural environment. The Australian Barramundi industry has on hand a large number of mature broodstock that are currently supplying the grow-out market, however, before selective breeding programs can begin, it is important to assess the levels of genetic diversity and relatedness of current captive broodstock populations.

Mass spawning hatchery practices using small broodstock populations, in addition to the cannibalistic nature of some fish species, contribute to a reduction of genetic diversity from parent to offspring and throughout the juvenile grow-out stages. This is of concern when establishing a selective breeding program for such species because the genetic diversity that is captured in the start-up and initial generations of the program is the basic ingredient for future genetic improvement. The aim of this thesis was to examine methods for capturing and conserving genetic diversity in mass spawning Barramundi (Lates calcarifer), when constructing a base population for a long-term selective breeding program for the species.

The results suggest that a mass spawning group of at least 30 Barramundi individuals is required to achieve a high participation rate of breeders and to limit the loss of genetic variation transferred to the offspring. Options for selecting candidates to compose a founding population were explored, and recommendations made to promote the longevity and impact of a selective breeding program for Barramundi.

Barramundi is naturally a mass spawning species, which can be induced to spawn in captivity under conditions that attempt to replicate the natural environment. The Australian Barramundi industry has on hand a large number of mature broodstock that are currently supplying the grow-out market, however, before selective breeding programs can begin, it is important to assess the levels of genetic diversity and relatedness of current captive broodstock populations.

Mass spawning hatchery practices using small broodstock populations, in addition to the cannibalistic nature of some fish species, contribute to a reduction of genetic diversity from parent to offspring and throughout the juvenile grow-out stages. This is of concern when establishing a selective breeding program for such species because the genetic diversity that is captured in the start-up and initial generations of the program is the basic ingredient for future genetic improvement. The aim of this thesis was to examine methods for capturing and conserving genetic diversity in mass spawning Barramundi (Lates calcarifer), when constructing a base population for a long-term selective breeding program for the species.

The results suggest that a mass spawning group of at least 30 Barramundi individuals is required to achieve a high participation rate of breeders and to limit the loss of genetic variation transferred to the offspring. Options for selecting candidates to compose a founding population were explored, and recommendations made to promote the longevity and impact of a selective breeding program for Barramundi.

Barramundi is naturally a mass spawning species, which can be induced to spawn in captivity under conditions that attempt to replicate the natural environment. The Australian Barramundi industry has on hand a large number of mature broodstock that are currently supplying the grow-out market, however, before selective breeding programs can begin, it is important to assess the levels of genetic diversity and relatedness of current captive broodstock populations.

Mass spawning hatchery practices using small broodstock populations, in addition to the cannibalistic nature of some fish species, contribute to a reduction of genetic diversity from parent to offspring and throughout the juvenile grow-out stages. This is of concern when establishing a selective breeding program for such species because the genetic diversity that is captured in the start-up and initial generations of the program is the basic ingredient for future genetic improvement. The aim of this thesis was to examine methods for capturing and conserving genetic diversity in mass spawning Barramundi (Lates calcarifer), when constructing a base population for a long-term selective breeding program for the species.

The results suggest that a mass spawning group of at least 30 Barramundi individuals is required to achieve a high participation rate of breeders and to limit the loss of genetic variation transferred to the offspring. Options for selecting candidates to compose a founding population were explored, and recommendations made to promote the longevity and impact of a selective breeding program for Barramundi.

The purpose of the research was to determine whether the endocrine profiles of plasma follicle stimulating hormone (FSH) and luteinizing hormone (LH) changed as a result of thermal exposure, broodstock age or hormonal treatment in farmed female Atlantic Salmon. FSH promotes the production of testosterone, oestrogen and oocyte (egg) growth while LH controls oocyte maturation and ovulation. There is some evidence to suggest that fish reared at 22 °C (equivalent of a warm Tasmanian summer) have higher levels of circulating FSH compared to fish reared at 14 °C (ideal temperature) and this is probably due to abnormal oestrogen levels (and therefore feedback mechanisms) in fish reared at high temperature.

An in vitro experiment was performed in Seattle that investigated the affect of elevated temperature and hormonal treatment on the expression levels of genes involved in testosterone production in ovarian fragments isolated from Coho Salmon. For the first time, it was shown that the relative expression of several genes involved in testosterone production was impaired by increased temperature in vitro. From this trial, a suite of candidate genes that may contribute to low T levels and therefore reproductive performance in Atlantic Salmon reared at 22 °C have been identified.

These results combined with previous work demonstrate that dysfunction at multiple levels in the endocrine cascade controlling reproductive development in thermally challenged female Atlantic Salmon is likely. This work also shows that formulating management strategies that improve reproductive performance in Atlantic Salmon reared at elevated temperature is no easy feat. However, as the CRC are learning more about how reproductive physiology changes with various therapeutic, biological (i.e. age) and environmental conditions, the CRC is becoming better positioned to make informed choices that will benefit the aquaculture industry in Australia.

The purpose of the research was to determine whether the endocrine profiles of plasma follicle stimulating hormone (FSH) and luteinizing hormone (LH) changed as a result of thermal exposure, broodstock age or hormonal treatment in farmed female Atlantic Salmon. FSH promotes the production of testosterone, oestrogen and oocyte (egg) growth while LH controls oocyte maturation and ovulation. There is some evidence to suggest that fish reared at 22 °C (equivalent of a warm Tasmanian summer) have higher levels of circulating FSH compared to fish reared at 14 °C (ideal temperature) and this is probably due to abnormal oestrogen levels (and therefore feedback mechanisms) in fish reared at high temperature.

An in vitro experiment was performed in Seattle that investigated the affect of elevated temperature and hormonal treatment on the expression levels of genes involved in testosterone production in ovarian fragments isolated from Coho Salmon. For the first time, it was shown that the relative expression of several genes involved in testosterone production was impaired by increased temperature in vitro. From this trial, a suite of candidate genes that may contribute to low T levels and therefore reproductive performance in Atlantic Salmon reared at 22 °C have been identified.

These results combined with previous work demonstrate that dysfunction at multiple levels in the endocrine cascade controlling reproductive development in thermally challenged female Atlantic Salmon is likely. This work also shows that formulating management strategies that improve reproductive performance in Atlantic Salmon reared at elevated temperature is no easy feat. However, as the CRC are learning more about how reproductive physiology changes with various therapeutic, biological (i.e. age) and environmental conditions, the CRC is becoming better positioned to make informed choices that will benefit the aquaculture industry in Australia.

The purpose of the research was to determine whether the endocrine profiles of plasma follicle stimulating hormone (FSH) and luteinizing hormone (LH) changed as a result of thermal exposure, broodstock age or hormonal treatment in farmed female Atlantic Salmon. FSH promotes the production of testosterone, oestrogen and oocyte (egg) growth while LH controls oocyte maturation and ovulation. There is some evidence to suggest that fish reared at 22 °C (equivalent of a warm Tasmanian summer) have higher levels of circulating FSH compared to fish reared at 14 °C (ideal temperature) and this is probably due to abnormal oestrogen levels (and therefore feedback mechanisms) in fish reared at high temperature.

An in vitro experiment was performed in Seattle that investigated the affect of elevated temperature and hormonal treatment on the expression levels of genes involved in testosterone production in ovarian fragments isolated from Coho Salmon. For the first time, it was shown that the relative expression of several genes involved in testosterone production was impaired by increased temperature in vitro. From this trial, a suite of candidate genes that may contribute to low T levels and therefore reproductive performance in Atlantic Salmon reared at 22 °C have been identified.

These results combined with previous work demonstrate that dysfunction at multiple levels in the endocrine cascade controlling reproductive development in thermally challenged female Atlantic Salmon is likely. This work also shows that formulating management strategies that improve reproductive performance in Atlantic Salmon reared at elevated temperature is no easy feat. However, as the CRC are learning more about how reproductive physiology changes with various therapeutic, biological (i.e. age) and environmental conditions, the CRC is becoming better positioned to make informed choices that will benefit the aquaculture industry in Australia.

The purpose of the research was to determine whether the endocrine profiles of plasma follicle stimulating hormone (FSH) and luteinizing hormone (LH) changed as a result of thermal exposure, broodstock age or hormonal treatment in farmed female Atlantic Salmon. FSH promotes the production of testosterone, oestrogen and oocyte (egg) growth while LH controls oocyte maturation and ovulation. There is some evidence to suggest that fish reared at 22 °C (equivalent of a warm Tasmanian summer) have higher levels of circulating FSH compared to fish reared at 14 °C (ideal temperature) and this is probably due to abnormal oestrogen levels (and therefore feedback mechanisms) in fish reared at high temperature.

An in vitro experiment was performed in Seattle that investigated the affect of elevated temperature and hormonal treatment on the expression levels of genes involved in testosterone production in ovarian fragments isolated from Coho Salmon. For the first time, it was shown that the relative expression of several genes involved in testosterone production was impaired by increased temperature in vitro. From this trial, a suite of candidate genes that may contribute to low T levels and therefore reproductive performance in Atlantic Salmon reared at 22 °C have been identified.

These results combined with previous work demonstrate that dysfunction at multiple levels in the endocrine cascade controlling reproductive development in thermally challenged female Atlantic Salmon is likely. This work also shows that formulating management strategies that improve reproductive performance in Atlantic Salmon reared at elevated temperature is no easy feat. However, as the CRC are learning more about how reproductive physiology changes with various therapeutic, biological (i.e. age) and environmental conditions, the CRC is becoming better positioned to make informed choices that will benefit the aquaculture industry in Australia.

The purpose of the research was to determine whether the endocrine profiles of plasma follicle stimulating hormone (FSH) and luteinizing hormone (LH) changed as a result of thermal exposure, broodstock age or hormonal treatment in farmed female Atlantic Salmon. FSH promotes the production of testosterone, oestrogen and oocyte (egg) growth while LH controls oocyte maturation and ovulation. There is some evidence to suggest that fish reared at 22 °C (equivalent of a warm Tasmanian summer) have higher levels of circulating FSH compared to fish reared at 14 °C (ideal temperature) and this is probably due to abnormal oestrogen levels (and therefore feedback mechanisms) in fish reared at high temperature.

An in vitro experiment was performed in Seattle that investigated the affect of elevated temperature and hormonal treatment on the expression levels of genes involved in testosterone production in ovarian fragments isolated from Coho Salmon. For the first time, it was shown that the relative expression of several genes involved in testosterone production was impaired by increased temperature in vitro. From this trial, a suite of candidate genes that may contribute to low T levels and therefore reproductive performance in Atlantic Salmon reared at 22 °C have been identified.

These results combined with previous work demonstrate that dysfunction at multiple levels in the endocrine cascade controlling reproductive development in thermally challenged female Atlantic Salmon is likely. This work also shows that formulating management strategies that improve reproductive performance in Atlantic Salmon reared at elevated temperature is no easy feat. However, as the CRC are learning more about how reproductive physiology changes with various therapeutic, biological (i.e. age) and environmental conditions, the CRC is becoming better positioned to make informed choices that will benefit the aquaculture industry in Australia.

The purpose of the research was to determine whether the endocrine profiles of plasma follicle stimulating hormone (FSH) and luteinizing hormone (LH) changed as a result of thermal exposure, broodstock age or hormonal treatment in farmed female Atlantic Salmon. FSH promotes the production of testosterone, oestrogen and oocyte (egg) growth while LH controls oocyte maturation and ovulation. There is some evidence to suggest that fish reared at 22 °C (equivalent of a warm Tasmanian summer) have higher levels of circulating FSH compared to fish reared at 14 °C (ideal temperature) and this is probably due to abnormal oestrogen levels (and therefore feedback mechanisms) in fish reared at high temperature.

An in vitro experiment was performed in Seattle that investigated the affect of elevated temperature and hormonal treatment on the expression levels of genes involved in testosterone production in ovarian fragments isolated from Coho Salmon. For the first time, it was shown that the relative expression of several genes involved in testosterone production was impaired by increased temperature in vitro. From this trial, a suite of candidate genes that may contribute to low T levels and therefore reproductive performance in Atlantic Salmon reared at 22 °C have been identified.

These results combined with previous work demonstrate that dysfunction at multiple levels in the endocrine cascade controlling reproductive development in thermally challenged female Atlantic Salmon is likely. This work also shows that formulating management strategies that improve reproductive performance in Atlantic Salmon reared at elevated temperature is no easy feat. However, as the CRC are learning more about how reproductive physiology changes with various therapeutic, biological (i.e. age) and environmental conditions, the CRC is becoming better positioned to make informed choices that will benefit the aquaculture industry in Australia.

The purpose of the research was to determine whether the endocrine profiles of plasma follicle stimulating hormone (FSH) and luteinizing hormone (LH) changed as a result of thermal exposure, broodstock age or hormonal treatment in farmed female Atlantic Salmon. FSH promotes the production of testosterone, oestrogen and oocyte (egg) growth while LH controls oocyte maturation and ovulation. There is some evidence to suggest that fish reared at 22 °C (equivalent of a warm Tasmanian summer) have higher levels of circulating FSH compared to fish reared at 14 °C (ideal temperature) and this is probably due to abnormal oestrogen levels (and therefore feedback mechanisms) in fish reared at high temperature.

An in vitro experiment was performed in Seattle that investigated the affect of elevated temperature and hormonal treatment on the expression levels of genes involved in testosterone production in ovarian fragments isolated from Coho Salmon. For the first time, it was shown that the relative expression of several genes involved in testosterone production was impaired by increased temperature in vitro. From this trial, a suite of candidate genes that may contribute to low T levels and therefore reproductive performance in Atlantic Salmon reared at 22 °C have been identified.

These results combined with previous work demonstrate that dysfunction at multiple levels in the endocrine cascade controlling reproductive development in thermally challenged female Atlantic Salmon is likely. This work also shows that formulating management strategies that improve reproductive performance in Atlantic Salmon reared at elevated temperature is no easy feat. However, as the CRC are learning more about how reproductive physiology changes with various therapeutic, biological (i.e. age) and environmental conditions, the CRC is becoming better positioned to make informed choices that will benefit the aquaculture industry in Australia.

The purpose of the research was to determine whether the endocrine profiles of plasma follicle stimulating hormone (FSH) and luteinizing hormone (LH) changed as a result of thermal exposure, broodstock age or hormonal treatment in farmed female Atlantic Salmon. FSH promotes the production of testosterone, oestrogen and oocyte (egg) growth while LH controls oocyte maturation and ovulation. There is some evidence to suggest that fish reared at 22 °C (equivalent of a warm Tasmanian summer) have higher levels of circulating FSH compared to fish reared at 14 °C (ideal temperature) and this is probably due to abnormal oestrogen levels (and therefore feedback mechanisms) in fish reared at high temperature.

An in vitro experiment was performed in Seattle that investigated the affect of elevated temperature and hormonal treatment on the expression levels of genes involved in testosterone production in ovarian fragments isolated from Coho Salmon. For the first time, it was shown that the relative expression of several genes involved in testosterone production was impaired by increased temperature in vitro. From this trial, a suite of candidate genes that may contribute to low T levels and therefore reproductive performance in Atlantic Salmon reared at 22 °C have been identified.

These results combined with previous work demonstrate that dysfunction at multiple levels in the endocrine cascade controlling reproductive development in thermally challenged female Atlantic Salmon is likely. This work also shows that formulating management strategies that improve reproductive performance in Atlantic Salmon reared at elevated temperature is no easy feat. However, as the CRC are learning more about how reproductive physiology changes with various therapeutic, biological (i.e. age) and environmental conditions, the CRC is becoming better positioned to make informed choices that will benefit the aquaculture industry in Australia.

The purpose of the research was to determine whether the endocrine profiles of plasma follicle stimulating hormone (FSH) and luteinizing hormone (LH) changed as a result of thermal exposure, broodstock age or hormonal treatment in farmed female Atlantic Salmon. FSH promotes the production of testosterone, oestrogen and oocyte (egg) growth while LH controls oocyte maturation and ovulation. There is some evidence to suggest that fish reared at 22 °C (equivalent of a warm Tasmanian summer) have higher levels of circulating FSH compared to fish reared at 14 °C (ideal temperature) and this is probably due to abnormal oestrogen levels (and therefore feedback mechanisms) in fish reared at high temperature.

An in vitro experiment was performed in Seattle that investigated the affect of elevated temperature and hormonal treatment on the expression levels of genes involved in testosterone production in ovarian fragments isolated from Coho Salmon. For the first time, it was shown that the relative expression of several genes involved in testosterone production was impaired by increased temperature in vitro. From this trial, a suite of candidate genes that may contribute to low T levels and therefore reproductive performance in Atlantic Salmon reared at 22 °C have been identified.

These results combined with previous work demonstrate that dysfunction at multiple levels in the endocrine cascade controlling reproductive development in thermally challenged female Atlantic Salmon is likely. This work also shows that formulating management strategies that improve reproductive performance in Atlantic Salmon reared at elevated temperature is no easy feat. However, as the CRC are learning more about how reproductive physiology changes with various therapeutic, biological (i.e. age) and environmental conditions, the CRC is becoming better positioned to make informed choices that will benefit the aquaculture industry in Australia.

The purpose of the research was to determine whether the endocrine profiles of plasma follicle stimulating hormone (FSH) and luteinizing hormone (LH) changed as a result of thermal exposure, broodstock age or hormonal treatment in farmed female Atlantic Salmon. FSH promotes the production of testosterone, oestrogen and oocyte (egg) growth while LH controls oocyte maturation and ovulation. There is some evidence to suggest that fish reared at 22 °C (equivalent of a warm Tasmanian summer) have higher levels of circulating FSH compared to fish reared at 14 °C (ideal temperature) and this is probably due to abnormal oestrogen levels (and therefore feedback mechanisms) in fish reared at high temperature.

An in vitro experiment was performed in Seattle that investigated the affect of elevated temperature and hormonal treatment on the expression levels of genes involved in testosterone production in ovarian fragments isolated from Coho Salmon. For the first time, it was shown that the relative expression of several genes involved in testosterone production was impaired by increased temperature in vitro. From this trial, a suite of candidate genes that may contribute to low T levels and therefore reproductive performance in Atlantic Salmon reared at 22 °C have been identified.

These results combined with previous work demonstrate that dysfunction at multiple levels in the endocrine cascade controlling reproductive development in thermally challenged female Atlantic Salmon is likely. This work also shows that formulating management strategies that improve reproductive performance in Atlantic Salmon reared at elevated temperature is no easy feat. However, as the CRC are learning more about how reproductive physiology changes with various therapeutic, biological (i.e. age) and environmental conditions, the CRC is becoming better positioned to make informed choices that will benefit the aquaculture industry in Australia.

The purpose of the research was to determine whether the endocrine profiles of plasma follicle stimulating hormone (FSH) and luteinizing hormone (LH) changed as a result of thermal exposure, broodstock age or hormonal treatment in farmed female Atlantic Salmon. FSH promotes the production of testosterone, oestrogen and oocyte (egg) growth while LH controls oocyte maturation and ovulation. There is some evidence to suggest that fish reared at 22 °C (equivalent of a warm Tasmanian summer) have higher levels of circulating FSH compared to fish reared at 14 °C (ideal temperature) and this is probably due to abnormal oestrogen levels (and therefore feedback mechanisms) in fish reared at high temperature.

An in vitro experiment was performed in Seattle that investigated the affect of elevated temperature and hormonal treatment on the expression levels of genes involved in testosterone production in ovarian fragments isolated from Coho Salmon. For the first time, it was shown that the relative expression of several genes involved in testosterone production was impaired by increased temperature in vitro. From this trial, a suite of candidate genes that may contribute to low T levels and therefore reproductive performance in Atlantic Salmon reared at 22 °C have been identified.

These results combined with previous work demonstrate that dysfunction at multiple levels in the endocrine cascade controlling reproductive development in thermally challenged female Atlantic Salmon is likely. This work also shows that formulating management strategies that improve reproductive performance in Atlantic Salmon reared at elevated temperature is no easy feat. However, as the CRC are learning more about how reproductive physiology changes with various therapeutic, biological (i.e. age) and environmental conditions, the CRC is becoming better positioned to make informed choices that will benefit the aquaculture industry in Australia.

The purpose of the research was to determine whether the endocrine profiles of plasma follicle stimulating hormone (FSH) and luteinizing hormone (LH) changed as a result of thermal exposure, broodstock age or hormonal treatment in farmed female Atlantic Salmon. FSH promotes the production of testosterone, oestrogen and oocyte (egg) growth while LH controls oocyte maturation and ovulation. There is some evidence to suggest that fish reared at 22 °C (equivalent of a warm Tasmanian summer) have higher levels of circulating FSH compared to fish reared at 14 °C (ideal temperature) and this is probably due to abnormal oestrogen levels (and therefore feedback mechanisms) in fish reared at high temperature.

An in vitro experiment was performed in Seattle that investigated the affect of elevated temperature and hormonal treatment on the expression levels of genes involved in testosterone production in ovarian fragments isolated from Coho Salmon. For the first time, it was shown that the relative expression of several genes involved in testosterone production was impaired by increased temperature in vitro. From this trial, a suite of candidate genes that may contribute to low T levels and therefore reproductive performance in Atlantic Salmon reared at 22 °C have been identified.

These results combined with previous work demonstrate that dysfunction at multiple levels in the endocrine cascade controlling reproductive development in thermally challenged female Atlantic Salmon is likely. This work also shows that formulating management strategies that improve reproductive performance in Atlantic Salmon reared at elevated temperature is no easy feat. However, as the CRC are learning more about how reproductive physiology changes with various therapeutic, biological (i.e. age) and environmental conditions, the CRC is becoming better positioned to make informed choices that will benefit the aquaculture industry in Australia.

The purpose of the research was to determine whether the endocrine profiles of plasma follicle stimulating hormone (FSH) and luteinizing hormone (LH) changed as a result of thermal exposure, broodstock age or hormonal treatment in farmed female Atlantic Salmon. FSH promotes the production of testosterone, oestrogen and oocyte (egg) growth while LH controls oocyte maturation and ovulation. There is some evidence to suggest that fish reared at 22 °C (equivalent of a warm Tasmanian summer) have higher levels of circulating FSH compared to fish reared at 14 °C (ideal temperature) and this is probably due to abnormal oestrogen levels (and therefore feedback mechanisms) in fish reared at high temperature.

An in vitro experiment was performed in Seattle that investigated the affect of elevated temperature and hormonal treatment on the expression levels of genes involved in testosterone production in ovarian fragments isolated from Coho Salmon. For the first time, it was shown that the relative expression of several genes involved in testosterone production was impaired by increased temperature in vitro. From this trial, a suite of candidate genes that may contribute to low T levels and therefore reproductive performance in Atlantic Salmon reared at 22 °C have been identified.

These results combined with previous work demonstrate that dysfunction at multiple levels in the endocrine cascade controlling reproductive development in thermally challenged female Atlantic Salmon is likely. This work also shows that formulating management strategies that improve reproductive performance in Atlantic Salmon reared at elevated temperature is no easy feat. However, as the CRC are learning more about how reproductive physiology changes with various therapeutic, biological (i.e. age) and environmental conditions, the CRC is becoming better positioned to make informed choices that will benefit the aquaculture industry in Australia.

The purpose of the research was to determine whether the endocrine profiles of plasma follicle stimulating hormone (FSH) and luteinizing hormone (LH) changed as a result of thermal exposure, broodstock age or hormonal treatment in farmed female Atlantic Salmon. FSH promotes the production of testosterone, oestrogen and oocyte (egg) growth while LH controls oocyte maturation and ovulation. There is some evidence to suggest that fish reared at 22 °C (equivalent of a warm Tasmanian summer) have higher levels of circulating FSH compared to fish reared at 14 °C (ideal temperature) and this is probably due to abnormal oestrogen levels (and therefore feedback mechanisms) in fish reared at high temperature.

An in vitro experiment was performed in Seattle that investigated the affect of elevated temperature and hormonal treatment on the expression levels of genes involved in testosterone production in ovarian fragments isolated from Coho Salmon. For the first time, it was shown that the relative expression of several genes involved in testosterone production was impaired by increased temperature in vitro. From this trial, a suite of candidate genes that may contribute to low T levels and therefore reproductive performance in Atlantic Salmon reared at 22 °C have been identified.

These results combined with previous work demonstrate that dysfunction at multiple levels in the endocrine cascade controlling reproductive development in thermally challenged female Atlantic Salmon is likely. This work also shows that formulating management strategies that improve reproductive performance in Atlantic Salmon reared at elevated temperature is no easy feat. However, as the CRC are learning more about how reproductive physiology changes with various therapeutic, biological (i.e. age) and environmental conditions, the CRC is becoming better positioned to make informed choices that will benefit the aquaculture industry in Australia.

The purpose of the research was to determine whether the endocrine profiles of plasma follicle stimulating hormone (FSH) and luteinizing hormone (LH) changed as a result of thermal exposure, broodstock age or hormonal treatment in farmed female Atlantic Salmon. FSH promotes the production of testosterone, oestrogen and oocyte (egg) growth while LH controls oocyte maturation and ovulation. There is some evidence to suggest that fish reared at 22 °C (equivalent of a warm Tasmanian summer) have higher levels of circulating FSH compared to fish reared at 14 °C (ideal temperature) and this is probably due to abnormal oestrogen levels (and therefore feedback mechanisms) in fish reared at high temperature.

An in vitro experiment was performed in Seattle that investigated the affect of elevated temperature and hormonal treatment on the expression levels of genes involved in testosterone production in ovarian fragments isolated from Coho Salmon. For the first time, it was shown that the relative expression of several genes involved in testosterone production was impaired by increased temperature in vitro. From this trial, a suite of candidate genes that may contribute to low T levels and therefore reproductive performance in Atlantic Salmon reared at 22 °C have been identified.

These results combined with previous work demonstrate that dysfunction at multiple levels in the endocrine cascade controlling reproductive development in thermally challenged female Atlantic Salmon is likely. This work also shows that formulating management strategies that improve reproductive performance in Atlantic Salmon reared at elevated temperature is no easy feat. However, as the CRC are learning more about how reproductive physiology changes with various therapeutic, biological (i.e. age) and environmental conditions, the CRC is becoming better positioned to make informed choices that will benefit the aquaculture industry in Australia.

The purpose of the research was to determine whether the endocrine profiles of plasma follicle stimulating hormone (FSH) and luteinizing hormone (LH) changed as a result of thermal exposure, broodstock age or hormonal treatment in farmed female Atlantic Salmon. FSH promotes the production of testosterone, oestrogen and oocyte (egg) growth while LH controls oocyte maturation and ovulation. There is some evidence to suggest that fish reared at 22 °C (equivalent of a warm Tasmanian summer) have higher levels of circulating FSH compared to fish reared at 14 °C (ideal temperature) and this is probably due to abnormal oestrogen levels (and therefore feedback mechanisms) in fish reared at high temperature.

An in vitro experiment was performed in Seattle that investigated the affect of elevated temperature and hormonal treatment on the expression levels of genes involved in testosterone production in ovarian fragments isolated from Coho Salmon. For the first time, it was shown that the relative expression of several genes involved in testosterone production was impaired by increased temperature in vitro. From this trial, a suite of candidate genes that may contribute to low T levels and therefore reproductive performance in Atlantic Salmon reared at 22 °C have been identified.

These results combined with previous work demonstrate that dysfunction at multiple levels in the endocrine cascade controlling reproductive development in thermally challenged female Atlantic Salmon is likely. This work also shows that formulating management strategies that improve reproductive performance in Atlantic Salmon reared at elevated temperature is no easy feat. However, as the CRC are learning more about how reproductive physiology changes with various therapeutic, biological (i.e. age) and environmental conditions, the CRC is becoming better positioned to make informed choices that will benefit the aquaculture industry in Australia.

The purpose of the research was to determine whether the endocrine profiles of plasma follicle stimulating hormone (FSH) and luteinizing hormone (LH) changed as a result of thermal exposure, broodstock age or hormonal treatment in farmed female Atlantic Salmon. FSH promotes the production of testosterone, oestrogen and oocyte (egg) growth while LH controls oocyte maturation and ovulation. There is some evidence to suggest that fish reared at 22 °C (equivalent of a warm Tasmanian summer) have higher levels of circulating FSH compared to fish reared at 14 °C (ideal temperature) and this is probably due to abnormal oestrogen levels (and therefore feedback mechanisms) in fish reared at high temperature.

An in vitro experiment was performed in Seattle that investigated the affect of elevated temperature and hormonal treatment on the expression levels of genes involved in testosterone production in ovarian fragments isolated from Coho Salmon. For the first time, it was shown that the relative expression of several genes involved in testosterone production was impaired by increased temperature in vitro. From this trial, a suite of candidate genes that may contribute to low T levels and therefore reproductive performance in Atlantic Salmon reared at 22 °C have been identified.

These results combined with previous work demonstrate that dysfunction at multiple levels in the endocrine cascade controlling reproductive development in thermally challenged female Atlantic Salmon is likely. This work also shows that formulating management strategies that improve reproductive performance in Atlantic Salmon reared at elevated temperature is no easy feat. However, as the CRC are learning more about how reproductive physiology changes with various therapeutic, biological (i.e. age) and environmental conditions, the CRC is becoming better positioned to make informed choices that will benefit the aquaculture industry in Australia.

The purpose of the research was to determine whether the endocrine profiles of plasma follicle stimulating hormone (FSH) and luteinizing hormone (LH) changed as a result of thermal exposure, broodstock age or hormonal treatment in farmed female Atlantic Salmon. FSH promotes the production of testosterone, oestrogen and oocyte (egg) growth while LH controls oocyte maturation and ovulation. There is some evidence to suggest that fish reared at 22 °C (equivalent of a warm Tasmanian summer) have higher levels of circulating FSH compared to fish reared at 14 °C (ideal temperature) and this is probably due to abnormal oestrogen levels (and therefore feedback mechanisms) in fish reared at high temperature.

An in vitro experiment was performed in Seattle that investigated the affect of elevated temperature and hormonal treatment on the expression levels of genes involved in testosterone production in ovarian fragments isolated from Coho Salmon. For the first time, it was shown that the relative expression of several genes involved in testosterone production was impaired by increased temperature in vitro. From this trial, a suite of candidate genes that may contribute to low T levels and therefore reproductive performance in Atlantic Salmon reared at 22 °C have been identified.

These results combined with previous work demonstrate that dysfunction at multiple levels in the endocrine cascade controlling reproductive development in thermally challenged female Atlantic Salmon is likely. This work also shows that formulating management strategies that improve reproductive performance in Atlantic Salmon reared at elevated temperature is no easy feat. However, as the CRC are learning more about how reproductive physiology changes with various therapeutic, biological (i.e. age) and environmental conditions, the CRC is becoming better positioned to make informed choices that will benefit the aquaculture industry in Australia.

The purpose of the research was to determine whether the endocrine profiles of plasma follicle stimulating hormone (FSH) and luteinizing hormone (LH) changed as a result of thermal exposure, broodstock age or hormonal treatment in farmed female Atlantic Salmon. FSH promotes the production of testosterone, oestrogen and oocyte (egg) growth while LH controls oocyte maturation and ovulation. There is some evidence to suggest that fish reared at 22 °C (equivalent of a warm Tasmanian summer) have higher levels of circulating FSH compared to fish reared at 14 °C (ideal temperature) and this is probably due to abnormal oestrogen levels (and therefore feedback mechanisms) in fish reared at high temperature.

An in vitro experiment was performed in Seattle that investigated the affect of elevated temperature and hormonal treatment on the expression levels of genes involved in testosterone production in ovarian fragments isolated from Coho Salmon. For the first time, it was shown that the relative expression of several genes involved in testosterone production was impaired by increased temperature in vitro. From this trial, a suite of candidate genes that may contribute to low T levels and therefore reproductive performance in Atlantic Salmon reared at 22 °C have been identified.

These results combined with previous work demonstrate that dysfunction at multiple levels in the endocrine cascade controlling reproductive development in thermally challenged female Atlantic Salmon is likely. This work also shows that formulating management strategies that improve reproductive performance in Atlantic Salmon reared at elevated temperature is no easy feat. However, as the CRC are learning more about how reproductive physiology changes with various therapeutic, biological (i.e. age) and environmental conditions, the CRC is becoming better positioned to make informed choices that will benefit the aquaculture industry in Australia.

The purpose of the research was to determine whether the endocrine profiles of plasma follicle stimulating hormone (FSH) and luteinizing hormone (LH) changed as a result of thermal exposure, broodstock age or hormonal treatment in farmed female Atlantic Salmon. FSH promotes the production of testosterone, oestrogen and oocyte (egg) growth while LH controls oocyte maturation and ovulation. There is some evidence to suggest that fish reared at 22 °C (equivalent of a warm Tasmanian summer) have higher levels of circulating FSH compared to fish reared at 14 °C (ideal temperature) and this is probably due to abnormal oestrogen levels (and therefore feedback mechanisms) in fish reared at high temperature.

An in vitro experiment was performed in Seattle that investigated the affect of elevated temperature and hormonal treatment on the expression levels of genes involved in testosterone production in ovarian fragments isolated from Coho Salmon. For the first time, it was shown that the relative expression of several genes involved in testosterone production was impaired by increased temperature in vitro. From this trial, a suite of candidate genes that may contribute to low T levels and therefore reproductive performance in Atlantic Salmon reared at 22 °C have been identified.

These results combined with previous work demonstrate that dysfunction at multiple levels in the endocrine cascade controlling reproductive development in thermally challenged female Atlantic Salmon is likely. This work also shows that formulating management strategies that improve reproductive performance in Atlantic Salmon reared at elevated temperature is no easy feat. However, as the CRC are learning more about how reproductive physiology changes with various therapeutic, biological (i.e. age) and environmental conditions, the CRC is becoming better positioned to make informed choices that will benefit the aquaculture industry in Australia.

The purpose of the research was to determine whether the endocrine profiles of plasma follicle stimulating hormone (FSH) and luteinizing hormone (LH) changed as a result of thermal exposure, broodstock age or hormonal treatment in farmed female Atlantic Salmon. FSH promotes the production of testosterone, oestrogen and oocyte (egg) growth while LH controls oocyte maturation and ovulation. There is some evidence to suggest that fish reared at 22 °C (equivalent of a warm Tasmanian summer) have higher levels of circulating FSH compared to fish reared at 14 °C (ideal temperature) and this is probably due to abnormal oestrogen levels (and therefore feedback mechanisms) in fish reared at high temperature.

An in vitro experiment was performed in Seattle that investigated the affect of elevated temperature and hormonal treatment on the expression levels of genes involved in testosterone production in ovarian fragments isolated from Coho Salmon. For the first time, it was shown that the relative expression of several genes involved in testosterone production was impaired by increased temperature in vitro. From this trial, a suite of candidate genes that may contribute to low T levels and therefore reproductive performance in Atlantic Salmon reared at 22 °C have been identified.

These results combined with previous work demonstrate that dysfunction at multiple levels in the endocrine cascade controlling reproductive development in thermally challenged female Atlantic Salmon is likely. This work also shows that formulating management strategies that improve reproductive performance in Atlantic Salmon reared at elevated temperature is no easy feat. However, as the CRC are learning more about how reproductive physiology changes with various therapeutic, biological (i.e. age) and environmental conditions, the CRC is becoming better positioned to make informed choices that will benefit the aquaculture industry in Australia.

The purpose of the research was to determine whether the endocrine profiles of plasma follicle stimulating hormone (FSH) and luteinizing hormone (LH) changed as a result of thermal exposure, broodstock age or hormonal treatment in farmed female Atlantic Salmon. FSH promotes the production of testosterone, oestrogen and oocyte (egg) growth while LH controls oocyte maturation and ovulation. There is some evidence to suggest that fish reared at 22 °C (equivalent of a warm Tasmanian summer) have higher levels of circulating FSH compared to fish reared at 14 °C (ideal temperature) and this is probably due to abnormal oestrogen levels (and therefore feedback mechanisms) in fish reared at high temperature.

An in vitro experiment was performed in Seattle that investigated the affect of elevated temperature and hormonal treatment on the expression levels of genes involved in testosterone production in ovarian fragments isolated from Coho Salmon. For the first time, it was shown that the relative expression of several genes involved in testosterone production was impaired by increased temperature in vitro. From this trial, a suite of candidate genes that may contribute to low T levels and therefore reproductive performance in Atlantic Salmon reared at 22 °C have been identified.

These results combined with previous work demonstrate that dysfunction at multiple levels in the endocrine cascade controlling reproductive development in thermally challenged female Atlantic Salmon is likely. This work also shows that formulating management strategies that improve reproductive performance in Atlantic Salmon reared at elevated temperature is no easy feat. However, as the CRC are learning more about how reproductive physiology changes with various therapeutic, biological (i.e. age) and environmental conditions, the CRC is becoming better positioned to make informed choices that will benefit the aquaculture industry in Australia.

The purpose of the research was to determine whether the endocrine profiles of plasma follicle stimulating hormone (FSH) and luteinizing hormone (LH) changed as a result of thermal exposure, broodstock age or hormonal treatment in farmed female Atlantic Salmon. FSH promotes the production of testosterone, oestrogen and oocyte (egg) growth while LH controls oocyte maturation and ovulation. There is some evidence to suggest that fish reared at 22 °C (equivalent of a warm Tasmanian summer) have higher levels of circulating FSH compared to fish reared at 14 °C (ideal temperature) and this is probably due to abnormal oestrogen levels (and therefore feedback mechanisms) in fish reared at high temperature.

An in vitro experiment was performed in Seattle that investigated the affect of elevated temperature and hormonal treatment on the expression levels of genes involved in testosterone production in ovarian fragments isolated from Coho Salmon. For the first time, it was shown that the relative expression of several genes involved in testosterone production was impaired by increased temperature in vitro. From this trial, a suite of candidate genes that may contribute to low T levels and therefore reproductive performance in Atlantic Salmon reared at 22 °C have been identified.

These results combined with previous work demonstrate that dysfunction at multiple levels in the endocrine cascade controlling reproductive development in thermally challenged female Atlantic Salmon is likely. This work also shows that formulating management strategies that improve reproductive performance in Atlantic Salmon reared at elevated temperature is no easy feat. However, as the CRC are learning more about how reproductive physiology changes with various therapeutic, biological (i.e. age) and environmental conditions, the CRC is becoming better positioned to make informed choices that will benefit the aquaculture industry in Australia.

The purpose of the research was to determine whether the endocrine profiles of plasma follicle stimulating hormone (FSH) and luteinizing hormone (LH) changed as a result of thermal exposure, broodstock age or hormonal treatment in farmed female Atlantic Salmon. FSH promotes the production of testosterone, oestrogen and oocyte (egg) growth while LH controls oocyte maturation and ovulation. There is some evidence to suggest that fish reared at 22 °C (equivalent of a warm Tasmanian summer) have higher levels of circulating FSH compared to fish reared at 14 °C (ideal temperature) and this is probably due to abnormal oestrogen levels (and therefore feedback mechanisms) in fish reared at high temperature.

An in vitro experiment was performed in Seattle that investigated the affect of elevated temperature and hormonal treatment on the expression levels of genes involved in testosterone production in ovarian fragments isolated from Coho Salmon. For the first time, it was shown that the relative expression of several genes involved in testosterone production was impaired by increased temperature in vitro. From this trial, a suite of candidate genes that may contribute to low T levels and therefore reproductive performance in Atlantic Salmon reared at 22 °C have been identified.

These results combined with previous work demonstrate that dysfunction at multiple levels in the endocrine cascade controlling reproductive development in thermally challenged female Atlantic Salmon is likely. This work also shows that formulating management strategies that improve reproductive performance in Atlantic Salmon reared at elevated temperature is no easy feat. However, as the CRC are learning more about how reproductive physiology changes with various therapeutic, biological (i.e. age) and environmental conditions, the CRC is becoming better positioned to make informed choices that will benefit the aquaculture industry in Australia.

The purpose of the research was to determine whether the endocrine profiles of plasma follicle stimulating hormone (FSH) and luteinizing hormone (LH) changed as a result of thermal exposure, broodstock age or hormonal treatment in farmed female Atlantic Salmon. FSH promotes the production of testosterone, oestrogen and oocyte (egg) growth while LH controls oocyte maturation and ovulation. There is some evidence to suggest that fish reared at 22 °C (equivalent of a warm Tasmanian summer) have higher levels of circulating FSH compared to fish reared at 14 °C (ideal temperature) and this is probably due to abnormal oestrogen levels (and therefore feedback mechanisms) in fish reared at high temperature.

An in vitro experiment was performed in Seattle that investigated the affect of elevated temperature and hormonal treatment on the expression levels of genes involved in testosterone production in ovarian fragments isolated from Coho Salmon. For the first time, it was shown that the relative expression of several genes involved in testosterone production was impaired by increased temperature in vitro. From this trial, a suite of candidate genes that may contribute to low T levels and therefore reproductive performance in Atlantic Salmon reared at 22 °C have been identified.

These results combined with previous work demonstrate that dysfunction at multiple levels in the endocrine cascade controlling reproductive development in thermally challenged female Atlantic Salmon is likely. This work also shows that formulating management strategies that improve reproductive performance in Atlantic Salmon reared at elevated temperature is no easy feat. However, as the CRC are learning more about how reproductive physiology changes with various therapeutic, biological (i.e. age) and environmental conditions, the CRC is becoming better positioned to make informed choices that will benefit the aquaculture industry in Australia.

The purpose of the research was to determine whether the endocrine profiles of plasma follicle stimulating hormone (FSH) and luteinizing hormone (LH) changed as a result of thermal exposure, broodstock age or hormonal treatment in farmed female Atlantic Salmon. FSH promotes the production of testosterone, oestrogen and oocyte (egg) growth while LH controls oocyte maturation and ovulation. There is some evidence to suggest that fish reared at 22 °C (equivalent of a warm Tasmanian summer) have higher levels of circulating FSH compared to fish reared at 14 °C (ideal temperature) and this is probably due to abnormal oestrogen levels (and therefore feedback mechanisms) in fish reared at high temperature.

An in vitro experiment was performed in Seattle that investigated the affect of elevated temperature and hormonal treatment on the expression levels of genes involved in testosterone production in ovarian fragments isolated from Coho Salmon. For the first time, it was shown that the relative expression of several genes involved in testosterone production was impaired by increased temperature in vitro. From this trial, a suite of candidate genes that may contribute to low T levels and therefore reproductive performance in Atlantic Salmon reared at 22 °C have been identified.

These results combined with previous work demonstrate that dysfunction at multiple levels in the endocrine cascade controlling reproductive development in thermally challenged female Atlantic Salmon is likely. This work also shows that formulating management strategies that improve reproductive performance in Atlantic Salmon reared at elevated temperature is no easy feat. However, as the CRC are learning more about how reproductive physiology changes with various therapeutic, biological (i.e. age) and environmental conditions, the CRC is becoming better positioned to make informed choices that will benefit the aquaculture industry in Australia.

The purpose of the research was to determine whether the endocrine profiles of plasma follicle stimulating hormone (FSH) and luteinizing hormone (LH) changed as a result of thermal exposure, broodstock age or hormonal treatment in farmed female Atlantic Salmon. FSH promotes the production of testosterone, oestrogen and oocyte (egg) growth while LH controls oocyte maturation and ovulation. There is some evidence to suggest that fish reared at 22 °C (equivalent of a warm Tasmanian summer) have higher levels of circulating FSH compared to fish reared at 14 °C (ideal temperature) and this is probably due to abnormal oestrogen levels (and therefore feedback mechanisms) in fish reared at high temperature.

An in vitro experiment was performed in Seattle that investigated the affect of elevated temperature and hormonal treatment on the expression levels of genes involved in testosterone production in ovarian fragments isolated from Coho Salmon. For the first time, it was shown that the relative expression of several genes involved in testosterone production was impaired by increased temperature in vitro. From this trial, a suite of candidate genes that may contribute to low T levels and therefore reproductive performance in Atlantic Salmon reared at 22 °C have been identified.

These results combined with previous work demonstrate that dysfunction at multiple levels in the endocrine cascade controlling reproductive development in thermally challenged female Atlantic Salmon is likely. This work also shows that formulating management strategies that improve reproductive performance in Atlantic Salmon reared at elevated temperature is no easy feat. However, as the CRC are learning more about how reproductive physiology changes with various therapeutic, biological (i.e. age) and environmental conditions, the CRC is becoming better positioned to make informed choices that will benefit the aquaculture industry in Australia.

The purpose of the research was to determine whether the endocrine profiles of plasma follicle stimulating hormone (FSH) and luteinizing hormone (LH) changed as a result of thermal exposure, broodstock age or hormonal treatment in farmed female Atlantic Salmon. FSH promotes the production of testosterone, oestrogen and oocyte (egg) growth while LH controls oocyte maturation and ovulation. There is some evidence to suggest that fish reared at 22 °C (equivalent of a warm Tasmanian summer) have higher levels of circulating FSH compared to fish reared at 14 °C (ideal temperature) and this is probably due to abnormal oestrogen levels (and therefore feedback mechanisms) in fish reared at high temperature.

An in vitro experiment was performed in Seattle that investigated the affect of elevated temperature and hormonal treatment on the expression levels of genes involved in testosterone production in ovarian fragments isolated from Coho Salmon. For the first time, it was shown that the relative expression of several genes involved in testosterone production was impaired by increased temperature in vitro. From this trial, a suite of candidate genes that may contribute to low T levels and therefore reproductive performance in Atlantic Salmon reared at 22 °C have been identified.

These results combined with previous work demonstrate that dysfunction at multiple levels in the endocrine cascade controlling reproductive development in thermally challenged female Atlantic Salmon is likely. This work also shows that formulating management strategies that improve reproductive performance in Atlantic Salmon reared at elevated temperature is no easy feat. However, as the CRC are learning more about how reproductive physiology changes with various therapeutic, biological (i.e. age) and environmental conditions, the CRC is becoming better positioned to make informed choices that will benefit the aquaculture industry in Australia.

The purpose of the research was to determine whether the endocrine profiles of plasma follicle stimulating hormone (FSH) and luteinizing hormone (LH) changed as a result of thermal exposure, broodstock age or hormonal treatment in farmed female Atlantic Salmon. FSH promotes the production of testosterone, oestrogen and oocyte (egg) growth while LH controls oocyte maturation and ovulation. There is some evidence to suggest that fish reared at 22 °C (equivalent of a warm Tasmanian summer) have higher levels of circulating FSH compared to fish reared at 14 °C (ideal temperature) and this is probably due to abnormal oestrogen levels (and therefore feedback mechanisms) in fish reared at high temperature.

An in vitro experiment was performed in Seattle that investigated the affect of elevated temperature and hormonal treatment on the expression levels of genes involved in testosterone production in ovarian fragments isolated from Coho Salmon. For the first time, it was shown that the relative expression of several genes involved in testosterone production was impaired by increased temperature in vitro. From this trial, a suite of candidate genes that may contribute to low T levels and therefore reproductive performance in Atlantic Salmon reared at 22 °C have been identified.

These results combined with previous work demonstrate that dysfunction at multiple levels in the endocrine cascade controlling reproductive development in thermally challenged female Atlantic Salmon is likely. This work also shows that formulating management strategies that improve reproductive performance in Atlantic Salmon reared at elevated temperature is no easy feat. However, as the CRC are learning more about how reproductive physiology changes with various therapeutic, biological (i.e. age) and environmental conditions, the CRC is becoming better positioned to make informed choices that will benefit the aquaculture industry in Australia.

The purpose of the research was to determine whether the endocrine profiles of plasma follicle stimulating hormone (FSH) and luteinizing hormone (LH) changed as a result of thermal exposure, broodstock age or hormonal treatment in farmed female Atlantic Salmon. FSH promotes the production of testosterone, oestrogen and oocyte (egg) growth while LH controls oocyte maturation and ovulation. There is some evidence to suggest that fish reared at 22 °C (equivalent of a warm Tasmanian summer) have higher levels of circulating FSH compared to fish reared at 14 °C (ideal temperature) and this is probably due to abnormal oestrogen levels (and therefore feedback mechanisms) in fish reared at high temperature.

An in vitro experiment was performed in Seattle that investigated the affect of elevated temperature and hormonal treatment on the expression levels of genes involved in testosterone production in ovarian fragments isolated from Coho Salmon. For the first time, it was shown that the relative expression of several genes involved in testosterone production was impaired by increased temperature in vitro. From this trial, a suite of candidate genes that may contribute to low T levels and therefore reproductive performance in Atlantic Salmon reared at 22 °C have been identified.

These results combined with previous work demonstrate that dysfunction at multiple levels in the endocrine cascade controlling reproductive development in thermally challenged female Atlantic Salmon is likely. This work also shows that formulating management strategies that improve reproductive performance in Atlantic Salmon reared at elevated temperature is no easy feat. However, as the CRC are learning more about how reproductive physiology changes with various therapeutic, biological (i.e. age) and environmental conditions, the CRC is becoming better positioned to make informed choices that will benefit the aquaculture industry in Australia.

The purpose of the research was to determine whether the endocrine profiles of plasma follicle stimulating hormone (FSH) and luteinizing hormone (LH) changed as a result of thermal exposure, broodstock age or hormonal treatment in farmed female Atlantic Salmon. FSH promotes the production of testosterone, oestrogen and oocyte (egg) growth while LH controls oocyte maturation and ovulation. There is some evidence to suggest that fish reared at 22 °C (equivalent of a warm Tasmanian summer) have higher levels of circulating FSH compared to fish reared at 14 °C (ideal temperature) and this is probably due to abnormal oestrogen levels (and therefore feedback mechanisms) in fish reared at high temperature.

An in vitro experiment was performed in Seattle that investigated the affect of elevated temperature and hormonal treatment on the expression levels of genes involved in testosterone production in ovarian fragments isolated from Coho Salmon. For the first time, it was shown that the relative expression of several genes involved in testosterone production was impaired by increased temperature in vitro. From this trial, a suite of candidate genes that may contribute to low T levels and therefore reproductive performance in Atlantic Salmon reared at 22 °C have been identified.

These results combined with previous work demonstrate that dysfunction at multiple levels in the endocrine cascade controlling reproductive development in thermally challenged female Atlantic Salmon is likely. This work also shows that formulating management strategies that improve reproductive performance in Atlantic Salmon reared at elevated temperature is no easy feat. However, as the CRC are learning more about how reproductive physiology changes with various therapeutic, biological (i.e. age) and environmental conditions, the CRC is becoming better positioned to make informed choices that will benefit the aquaculture industry in Australia.

The purpose of the research was to determine whether the endocrine profiles of plasma follicle stimulating hormone (FSH) and luteinizing hormone (LH) changed as a result of thermal exposure, broodstock age or hormonal treatment in farmed female Atlantic Salmon. FSH promotes the production of testosterone, oestrogen and oocyte (egg) growth while LH controls oocyte maturation and ovulation. There is some evidence to suggest that fish reared at 22 °C (equivalent of a warm Tasmanian summer) have higher levels of circulating FSH compared to fish reared at 14 °C (ideal temperature) and this is probably due to abnormal oestrogen levels (and therefore feedback mechanisms) in fish reared at high temperature.

An in vitro experiment was performed in Seattle that investigated the affect of elevated temperature and hormonal treatment on the expression levels of genes involved in testosterone production in ovarian fragments isolated from Coho Salmon. For the first time, it was shown that the relative expression of several genes involved in testosterone production was impaired by increased temperature in vitro. From this trial, a suite of candidate genes that may contribute to low T levels and therefore reproductive performance in Atlantic Salmon reared at 22 °C have been identified.

These results combined with previous work demonstrate that dysfunction at multiple levels in the endocrine cascade controlling reproductive development in thermally challenged female Atlantic Salmon is likely. This work also shows that formulating management strategies that improve reproductive performance in Atlantic Salmon reared at elevated temperature is no easy feat. However, as the CRC are learning more about how reproductive physiology changes with various therapeutic, biological (i.e. age) and environmental conditions, the CRC is becoming better positioned to make informed choices that will benefit the aquaculture industry in Australia.

The purpose of the research was to determine whether the endocrine profiles of plasma follicle stimulating hormone (FSH) and luteinizing hormone (LH) changed as a result of thermal exposure, broodstock age or hormonal treatment in farmed female Atlantic Salmon. FSH promotes the production of testosterone, oestrogen and oocyte (egg) growth while LH controls oocyte maturation and ovulation. There is some evidence to suggest that fish reared at 22 °C (equivalent of a warm Tasmanian summer) have higher levels of circulating FSH compared to fish reared at 14 °C (ideal temperature) and this is probably due to abnormal oestrogen levels (and therefore feedback mechanisms) in fish reared at high temperature.

An in vitro experiment was performed in Seattle that investigated the affect of elevated temperature and hormonal treatment on the expression levels of genes involved in testosterone production in ovarian fragments isolated from Coho Salmon. For the first time, it was shown that the relative expression of several genes involved in testosterone production was impaired by increased temperature in vitro. From this trial, a suite of candidate genes that may contribute to low T levels and therefore reproductive performance in Atlantic Salmon reared at 22 °C have been identified.

These results combined with previous work demonstrate that dysfunction at multiple levels in the endocrine cascade controlling reproductive development in thermally challenged female Atlantic Salmon is likely. This work also shows that formulating management strategies that improve reproductive performance in Atlantic Salmon reared at elevated temperature is no easy feat. However, as the CRC are learning more about how reproductive physiology changes with various therapeutic, biological (i.e. age) and environmental conditions, the CRC is becoming better positioned to make informed choices that will benefit the aquaculture industry in Australia.

The purpose of the research was to determine whether the endocrine profiles of plasma follicle stimulating hormone (FSH) and luteinizing hormone (LH) changed as a result of thermal exposure, broodstock age or hormonal treatment in farmed female Atlantic Salmon. FSH promotes the production of testosterone, oestrogen and oocyte (egg) growth while LH controls oocyte maturation and ovulation. There is some evidence to suggest that fish reared at 22 °C (equivalent of a warm Tasmanian summer) have higher levels of circulating FSH compared to fish reared at 14 °C (ideal temperature) and this is probably due to abnormal oestrogen levels (and therefore feedback mechanisms) in fish reared at high temperature.

An in vitro experiment was performed in Seattle that investigated the affect of elevated temperature and hormonal treatment on the expression levels of genes involved in testosterone production in ovarian fragments isolated from Coho Salmon. For the first time, it was shown that the relative expression of several genes involved in testosterone production was impaired by increased temperature in vitro. From this trial, a suite of candidate genes that may contribute to low T levels and therefore reproductive performance in Atlantic Salmon reared at 22 °C have been identified.

These results combined with previous work demonstrate that dysfunction at multiple levels in the endocrine cascade controlling reproductive development in thermally challenged female Atlantic Salmon is likely. This work also shows that formulating management strategies that improve reproductive performance in Atlantic Salmon reared at elevated temperature is no easy feat. However, as the CRC are learning more about how reproductive physiology changes with various therapeutic, biological (i.e. age) and environmental conditions, the CRC is becoming better positioned to make informed choices that will benefit the aquaculture industry in Australia.

The purpose of the research was to determine whether the endocrine profiles of plasma follicle stimulating hormone (FSH) and luteinizing hormone (LH) changed as a result of thermal exposure, broodstock age or hormonal treatment in farmed female Atlantic Salmon. FSH promotes the production of testosterone, oestrogen and oocyte (egg) growth while LH controls oocyte maturation and ovulation. There is some evidence to suggest that fish reared at 22 °C (equivalent of a warm Tasmanian summer) have higher levels of circulating FSH compared to fish reared at 14 °C (ideal temperature) and this is probably due to abnormal oestrogen levels (and therefore feedback mechanisms) in fish reared at high temperature.

An in vitro experiment was performed in Seattle that investigated the affect of elevated temperature and hormonal treatment on the expression levels of genes involved in testosterone production in ovarian fragments isolated from Coho Salmon. For the first time, it was shown that the relative expression of several genes involved in testosterone production was impaired by increased temperature in vitro. From this trial, a suite of candidate genes that may contribute to low T levels and therefore reproductive performance in Atlantic Salmon reared at 22 °C have been identified.

These results combined with previous work demonstrate that dysfunction at multiple levels in the endocrine cascade controlling reproductive development in thermally challenged female Atlantic Salmon is likely. This work also shows that formulating management strategies that improve reproductive performance in Atlantic Salmon reared at elevated temperature is no easy feat. However, as the CRC are learning more about how reproductive physiology changes with various therapeutic, biological (i.e. age) and environmental conditions, the CRC is becoming better positioned to make informed choices that will benefit the aquaculture industry in Australia.

The purpose of the research was to determine whether the endocrine profiles of plasma follicle stimulating hormone (FSH) and luteinizing hormone (LH) changed as a result of thermal exposure, broodstock age or hormonal treatment in farmed female Atlantic Salmon. FSH promotes the production of testosterone, oestrogen and oocyte (egg) growth while LH controls oocyte maturation and ovulation. There is some evidence to suggest that fish reared at 22 °C (equivalent of a warm Tasmanian summer) have higher levels of circulating FSH compared to fish reared at 14 °C (ideal temperature) and this is probably due to abnormal oestrogen levels (and therefore feedback mechanisms) in fish reared at high temperature.

An in vitro experiment was performed in Seattle that investigated the affect of elevated temperature and hormonal treatment on the expression levels of genes involved in testosterone production in ovarian fragments isolated from Coho Salmon. For the first time, it was shown that the relative expression of several genes involved in testosterone production was impaired by increased temperature in vitro. From this trial, a suite of candidate genes that may contribute to low T levels and therefore reproductive performance in Atlantic Salmon reared at 22 °C have been identified.

These results combined with previous work demonstrate that dysfunction at multiple levels in the endocrine cascade controlling reproductive development in thermally challenged female Atlantic Salmon is likely. This work also shows that formulating management strategies that improve reproductive performance in Atlantic Salmon reared at elevated temperature is no easy feat. However, as the CRC are learning more about how reproductive physiology changes with various therapeutic, biological (i.e. age) and environmental conditions, the CRC is becoming better positioned to make informed choices that will benefit the aquaculture industry in Australia.

The purpose of the research was to determine whether the endocrine profiles of plasma follicle stimulating hormone (FSH) and luteinizing hormone (LH) changed as a result of thermal exposure, broodstock age or hormonal treatment in farmed female Atlantic Salmon. FSH promotes the production of testosterone, oestrogen and oocyte (egg) growth while LH controls oocyte maturation and ovulation. There is some evidence to suggest that fish reared at 22 °C (equivalent of a warm Tasmanian summer) have higher levels of circulating FSH compared to fish reared at 14 °C (ideal temperature) and this is probably due to abnormal oestrogen levels (and therefore feedback mechanisms) in fish reared at high temperature.

An in vitro experiment was performed in Seattle that investigated the affect of elevated temperature and hormonal treatment on the expression levels of genes involved in testosterone production in ovarian fragments isolated from Coho Salmon. For the first time, it was shown that the relative expression of several genes involved in testosterone production was impaired by increased temperature in vitro. From this trial, a suite of candidate genes that may contribute to low T levels and therefore reproductive performance in Atlantic Salmon reared at 22 °C have been identified.

These results combined with previous work demonstrate that dysfunction at multiple levels in the endocrine cascade controlling reproductive development in thermally challenged female Atlantic Salmon is likely. This work also shows that formulating management strategies that improve reproductive performance in Atlantic Salmon reared at elevated temperature is no easy feat. However, as the CRC are learning more about how reproductive physiology changes with various therapeutic, biological (i.e. age) and environmental conditions, the CRC is becoming better positioned to make informed choices that will benefit the aquaculture industry in Australia.

The purpose of the research was to determine whether the endocrine profiles of plasma follicle stimulating hormone (FSH) and luteinizing hormone (LH) changed as a result of thermal exposure, broodstock age or hormonal treatment in farmed female Atlantic Salmon. FSH promotes the production of testosterone, oestrogen and oocyte (egg) growth while LH controls oocyte maturation and ovulation. There is some evidence to suggest that fish reared at 22 °C (equivalent of a warm Tasmanian summer) have higher levels of circulating FSH compared to fish reared at 14 °C (ideal temperature) and this is probably due to abnormal oestrogen levels (and therefore feedback mechanisms) in fish reared at high temperature.

An in vitro experiment was performed in Seattle that investigated the affect of elevated temperature and hormonal treatment on the expression levels of genes involved in testosterone production in ovarian fragments isolated from Coho Salmon. For the first time, it was shown that the relative expression of several genes involved in testosterone production was impaired by increased temperature in vitro. From this trial, a suite of candidate genes that may contribute to low T levels and therefore reproductive performance in Atlantic Salmon reared at 22 °C have been identified.

These results combined with previous work demonstrate that dysfunction at multiple levels in the endocrine cascade controlling reproductive development in thermally challenged female Atlantic Salmon is likely. This work also shows that formulating management strategies that improve reproductive performance in Atlantic Salmon reared at elevated temperature is no easy feat. However, as the CRC are learning more about how reproductive physiology changes with various therapeutic, biological (i.e. age) and environmental conditions, the CRC is becoming better positioned to make informed choices that will benefit the aquaculture industry in Australia.

The purpose of the research was to determine whether the endocrine profiles of plasma follicle stimulating hormone (FSH) and luteinizing hormone (LH) changed as a result of thermal exposure, broodstock age or hormonal treatment in farmed female Atlantic Salmon. FSH promotes the production of testosterone, oestrogen and oocyte (egg) growth while LH controls oocyte maturation and ovulation. There is some evidence to suggest that fish reared at 22 °C (equivalent of a warm Tasmanian summer) have higher levels of circulating FSH compared to fish reared at 14 °C (ideal temperature) and this is probably due to abnormal oestrogen levels (and therefore feedback mechanisms) in fish reared at high temperature.

An in vitro experiment was performed in Seattle that investigated the affect of elevated temperature and hormonal treatment on the expression levels of genes involved in testosterone production in ovarian fragments isolated from Coho Salmon. For the first time, it was shown that the relative expression of several genes involved in testosterone production was impaired by increased temperature in vitro. From this trial, a suite of candidate genes that may contribute to low T levels and therefore reproductive performance in Atlantic Salmon reared at 22 °C have been identified.

These results combined with previous work demonstrate that dysfunction at multiple levels in the endocrine cascade controlling reproductive development in thermally challenged female Atlantic Salmon is likely. This work also shows that formulating management strategies that improve reproductive performance in Atlantic Salmon reared at elevated temperature is no easy feat. However, as the CRC are learning more about how reproductive physiology changes with various therapeutic, biological (i.e. age) and environmental conditions, the CRC is becoming better positioned to make informed choices that will benefit the aquaculture industry in Australia.

The purpose of the research was to determine whether the endocrine profiles of plasma follicle stimulating hormone (FSH) and luteinizing hormone (LH) changed as a result of thermal exposure, broodstock age or hormonal treatment in farmed female Atlantic Salmon. FSH promotes the production of testosterone, oestrogen and oocyte (egg) growth while LH controls oocyte maturation and ovulation. There is some evidence to suggest that fish reared at 22 °C (equivalent of a warm Tasmanian summer) have higher levels of circulating FSH compared to fish reared at 14 °C (ideal temperature) and this is probably due to abnormal oestrogen levels (and therefore feedback mechanisms) in fish reared at high temperature.

An in vitro experiment was performed in Seattle that investigated the affect of elevated temperature and hormonal treatment on the expression levels of genes involved in testosterone production in ovarian fragments isolated from Coho Salmon. For the first time, it was shown that the relative expression of several genes involved in testosterone production was impaired by increased temperature in vitro. From this trial, a suite of candidate genes that may contribute to low T levels and therefore reproductive performance in Atlantic Salmon reared at 22 °C have been identified.

These results combined with previous work demonstrate that dysfunction at multiple levels in the endocrine cascade controlling reproductive development in thermally challenged female Atlantic Salmon is likely. This work also shows that formulating management strategies that improve reproductive performance in Atlantic Salmon reared at elevated temperature is no easy feat. However, as the CRC are learning more about how reproductive physiology changes with various therapeutic, biological (i.e. age) and environmental conditions, the CRC is becoming better positioned to make informed choices that will benefit the aquaculture industry in Australia.

The purpose of the research was to determine whether the endocrine profiles of plasma follicle stimulating hormone (FSH) and luteinizing hormone (LH) changed as a result of thermal exposure, broodstock age or hormonal treatment in farmed female Atlantic Salmon. FSH promotes the production of testosterone, oestrogen and oocyte (egg) growth while LH controls oocyte maturation and ovulation. There is some evidence to suggest that fish reared at 22 °C (equivalent of a warm Tasmanian summer) have higher levels of circulating FSH compared to fish reared at 14 °C (ideal temperature) and this is probably due to abnormal oestrogen levels (and therefore feedback mechanisms) in fish reared at high temperature.

An in vitro experiment was performed in Seattle that investigated the affect of elevated temperature and hormonal treatment on the expression levels of genes involved in testosterone production in ovarian fragments isolated from Coho Salmon. For the first time, it was shown that the relative expression of several genes involved in testosterone production was impaired by increased temperature in vitro. From this trial, a suite of candidate genes that may contribute to low T levels and therefore reproductive performance in Atlantic Salmon reared at 22 °C have been identified.

These results combined with previous work demonstrate that dysfunction at multiple levels in the endocrine cascade controlling reproductive development in thermally challenged female Atlantic Salmon is likely. This work also shows that formulating management strategies that improve reproductive performance in Atlantic Salmon reared at elevated temperature is no easy feat. However, as the CRC are learning more about how reproductive physiology changes with various therapeutic, biological (i.e. age) and environmental conditions, the CRC is becoming better positioned to make informed choices that will benefit the aquaculture industry in Australia.

The purpose of the research was to determine whether the endocrine profiles of plasma follicle stimulating hormone (FSH) and luteinizing hormone (LH) changed as a result of thermal exposure, broodstock age or hormonal treatment in farmed female Atlantic Salmon. FSH promotes the production of testosterone, oestrogen and oocyte (egg) growth while LH controls oocyte maturation and ovulation. There is some evidence to suggest that fish reared at 22 °C (equivalent of a warm Tasmanian summer) have higher levels of circulating FSH compared to fish reared at 14 °C (ideal temperature) and this is probably due to abnormal oestrogen levels (and therefore feedback mechanisms) in fish reared at high temperature.

An in vitro experiment was performed in Seattle that investigated the affect of elevated temperature and hormonal treatment on the expression levels of genes involved in testosterone production in ovarian fragments isolated from Coho Salmon. For the first time, it was shown that the relative expression of several genes involved in testosterone production was impaired by increased temperature in vitro. From this trial, a suite of candidate genes that may contribute to low T levels and therefore reproductive performance in Atlantic Salmon reared at 22 °C have been identified.

These results combined with previous work demonstrate that dysfunction at multiple levels in the endocrine cascade controlling reproductive development in thermally challenged female Atlantic Salmon is likely. This work also shows that formulating management strategies that improve reproductive performance in Atlantic Salmon reared at elevated temperature is no easy feat. However, as the CRC are learning more about how reproductive physiology changes with various therapeutic, biological (i.e. age) and environmental conditions, the CRC is becoming better positioned to make informed choices that will benefit the aquaculture industry in Australia.

The purpose of the research was to determine whether the endocrine profiles of plasma follicle stimulating hormone (FSH) and luteinizing hormone (LH) changed as a result of thermal exposure, broodstock age or hormonal treatment in farmed female Atlantic Salmon. FSH promotes the production of testosterone, oestrogen and oocyte (egg) growth while LH controls oocyte maturation and ovulation. There is some evidence to suggest that fish reared at 22 °C (equivalent of a warm Tasmanian summer) have higher levels of circulating FSH compared to fish reared at 14 °C (ideal temperature) and this is probably due to abnormal oestrogen levels (and therefore feedback mechanisms) in fish reared at high temperature.

An in vitro experiment was performed in Seattle that investigated the affect of elevated temperature and hormonal treatment on the expression levels of genes involved in testosterone production in ovarian fragments isolated from Coho Salmon. For the first time, it was shown that the relative expression of several genes involved in testosterone production was impaired by increased temperature in vitro. From this trial, a suite of candidate genes that may contribute to low T levels and therefore reproductive performance in Atlantic Salmon reared at 22 °C have been identified.

These results combined with previous work demonstrate that dysfunction at multiple levels in the endocrine cascade controlling reproductive development in thermally challenged female Atlantic Salmon is likely. This work also shows that formulating management strategies that improve reproductive performance in Atlantic Salmon reared at elevated temperature is no easy feat. However, as the CRC are learning more about how reproductive physiology changes with various therapeutic, biological (i.e. age) and environmental conditions, the CRC is becoming better positioned to make informed choices that will benefit the aquaculture industry in Australia.

The purpose of the research was to determine whether the endocrine profiles of plasma follicle stimulating hormone (FSH) and luteinizing hormone (LH) changed as a result of thermal exposure, broodstock age or hormonal treatment in farmed female Atlantic Salmon. FSH promotes the production of testosterone, oestrogen and oocyte (egg) growth while LH controls oocyte maturation and ovulation. There is some evidence to suggest that fish reared at 22 °C (equivalent of a warm Tasmanian summer) have higher levels of circulating FSH compared to fish reared at 14 °C (ideal temperature) and this is probably due to abnormal oestrogen levels (and therefore feedback mechanisms) in fish reared at high temperature.

An in vitro experiment was performed in Seattle that investigated the affect of elevated temperature and hormonal treatment on the expression levels of genes involved in testosterone production in ovarian fragments isolated from Coho Salmon. For the first time, it was shown that the relative expression of several genes involved in testosterone production was impaired by increased temperature in vitro. From this trial, a suite of candidate genes that may contribute to low T levels and therefore reproductive performance in Atlantic Salmon reared at 22 °C have been identified.

These results combined with previous work demonstrate that dysfunction at multiple levels in the endocrine cascade controlling reproductive development in thermally challenged female Atlantic Salmon is likely. This work also shows that formulating management strategies that improve reproductive performance in Atlantic Salmon reared at elevated temperature is no easy feat. However, as the CRC are learning more about how reproductive physiology changes with various therapeutic, biological (i.e. age) and environmental conditions, the CRC is becoming better positioned to make informed choices that will benefit the aquaculture industry in Australia.

The purpose of the research was to determine whether the endocrine profiles of plasma follicle stimulating hormone (FSH) and luteinizing hormone (LH) changed as a result of thermal exposure, broodstock age or hormonal treatment in farmed female Atlantic Salmon. FSH promotes the production of testosterone, oestrogen and oocyte (egg) growth while LH controls oocyte maturation and ovulation. There is some evidence to suggest that fish reared at 22 °C (equivalent of a warm Tasmanian summer) have higher levels of circulating FSH compared to fish reared at 14 °C (ideal temperature) and this is probably due to abnormal oestrogen levels (and therefore feedback mechanisms) in fish reared at high temperature.

An in vitro experiment was performed in Seattle that investigated the affect of elevated temperature and hormonal treatment on the expression levels of genes involved in testosterone production in ovarian fragments isolated from Coho Salmon. For the first time, it was shown that the relative expression of several genes involved in testosterone production was impaired by increased temperature in vitro. From this trial, a suite of candidate genes that may contribute to low T levels and therefore reproductive performance in Atlantic Salmon reared at 22 °C have been identified.

These results combined with previous work demonstrate that dysfunction at multiple levels in the endocrine cascade controlling reproductive development in thermally challenged female Atlantic Salmon is likely. This work also shows that formulating management strategies that improve reproductive performance in Atlantic Salmon reared at elevated temperature is no easy feat. However, as the CRC are learning more about how reproductive physiology changes with various therapeutic, biological (i.e. age) and environmental conditions, the CRC is becoming better positioned to make informed choices that will benefit the aquaculture industry in Australia.

The purpose of the research was to determine whether the endocrine profiles of plasma follicle stimulating hormone (FSH) and luteinizing hormone (LH) changed as a result of thermal exposure, broodstock age or hormonal treatment in farmed female Atlantic Salmon. FSH promotes the production of testosterone, oestrogen and oocyte (egg) growth while LH controls oocyte maturation and ovulation. There is some evidence to suggest that fish reared at 22 °C (equivalent of a warm Tasmanian summer) have higher levels of circulating FSH compared to fish reared at 14 °C (ideal temperature) and this is probably due to abnormal oestrogen levels (and therefore feedback mechanisms) in fish reared at high temperature.

An in vitro experiment was performed in Seattle that investigated the affect of elevated temperature and hormonal treatment on the expression levels of genes involved in testosterone production in ovarian fragments isolated from Coho Salmon. For the first time, it was shown that the relative expression of several genes involved in testosterone production was impaired by increased temperature in vitro. From this trial, a suite of candidate genes that may contribute to low T levels and therefore reproductive performance in Atlantic Salmon reared at 22 °C have been identified.

These results combined with previous work demonstrate that dysfunction at multiple levels in the endocrine cascade controlling reproductive development in thermally challenged female Atlantic Salmon is likely. This work also shows that formulating management strategies that improve reproductive performance in Atlantic Salmon reared at elevated temperature is no easy feat. However, as the CRC are learning more about how reproductive physiology changes with various therapeutic, biological (i.e. age) and environmental conditions, the CRC is becoming better positioned to make informed choices that will benefit the aquaculture industry in Australia.

The purpose of the research was to determine whether the endocrine profiles of plasma follicle stimulating hormone (FSH) and luteinizing hormone (LH) changed as a result of thermal exposure, broodstock age or hormonal treatment in farmed female Atlantic Salmon. FSH promotes the production of testosterone, oestrogen and oocyte (egg) growth while LH controls oocyte maturation and ovulation. There is some evidence to suggest that fish reared at 22 °C (equivalent of a warm Tasmanian summer) have higher levels of circulating FSH compared to fish reared at 14 °C (ideal temperature) and this is probably due to abnormal oestrogen levels (and therefore feedback mechanisms) in fish reared at high temperature.

An in vitro experiment was performed in Seattle that investigated the affect of elevated temperature and hormonal treatment on the expression levels of genes involved in testosterone production in ovarian fragments isolated from Coho Salmon. For the first time, it was shown that the relative expression of several genes involved in testosterone production was impaired by increased temperature in vitro. From this trial, a suite of candidate genes that may contribute to low T levels and therefore reproductive performance in Atlantic Salmon reared at 22 °C have been identified.

These results combined with previous work demonstrate that dysfunction at multiple levels in the endocrine cascade controlling reproductive development in thermally challenged female Atlantic Salmon is likely. This work also shows that formulating management strategies that improve reproductive performance in Atlantic Salmon reared at elevated temperature is no easy feat. However, as the CRC are learning more about how reproductive physiology changes with various therapeutic, biological (i.e. age) and environmental conditions, the CRC is becoming better positioned to make informed choices that will benefit the aquaculture industry in Australia.

The purpose of the research was to determine whether the endocrine profiles of plasma follicle stimulating hormone (FSH) and luteinizing hormone (LH) changed as a result of thermal exposure, broodstock age or hormonal treatment in farmed female Atlantic Salmon. FSH promotes the production of testosterone, oestrogen and oocyte (egg) growth while LH controls oocyte maturation and ovulation. There is some evidence to suggest that fish reared at 22 °C (equivalent of a warm Tasmanian summer) have higher levels of circulating FSH compared to fish reared at 14 °C (ideal temperature) and this is probably due to abnormal oestrogen levels (and therefore feedback mechanisms) in fish reared at high temperature.

An in vitro experiment was performed in Seattle that investigated the affect of elevated temperature and hormonal treatment on the expression levels of genes involved in testosterone production in ovarian fragments isolated from Coho Salmon. For the first time, it was shown that the relative expression of several genes involved in testosterone production was impaired by increased temperature in vitro. From this trial, a suite of candidate genes that may contribute to low T levels and therefore reproductive performance in Atlantic Salmon reared at 22 °C have been identified.

These results combined with previous work demonstrate that dysfunction at multiple levels in the endocrine cascade controlling reproductive development in thermally challenged female Atlantic Salmon is likely. This work also shows that formulating management strategies that improve reproductive performance in Atlantic Salmon reared at elevated temperature is no easy feat. However, as the CRC are learning more about how reproductive physiology changes with various therapeutic, biological (i.e. age) and environmental conditions, the CRC is becoming better positioned to make informed choices that will benefit the aquaculture industry in Australia.

The purpose of the research was to determine whether the endocrine profiles of plasma follicle stimulating hormone (FSH) and luteinizing hormone (LH) changed as a result of thermal exposure, broodstock age or hormonal treatment in farmed female Atlantic Salmon. FSH promotes the production of testosterone, oestrogen and oocyte (egg) growth while LH controls oocyte maturation and ovulation. There is some evidence to suggest that fish reared at 22 °C (equivalent of a warm Tasmanian summer) have higher levels of circulating FSH compared to fish reared at 14 °C (ideal temperature) and this is probably due to abnormal oestrogen levels (and therefore feedback mechanisms) in fish reared at high temperature.

An in vitro experiment was performed in Seattle that investigated the affect of elevated temperature and hormonal treatment on the expression levels of genes involved in testosterone production in ovarian fragments isolated from Coho Salmon. For the first time, it was shown that the relative expression of several genes involved in testosterone production was impaired by increased temperature in vitro. From this trial, a suite of candidate genes that may contribute to low T levels and therefore reproductive performance in Atlantic Salmon reared at 22 °C have been identified.

These results combined with previous work demonstrate that dysfunction at multiple levels in the endocrine cascade controlling reproductive development in thermally challenged female Atlantic Salmon is likely. This work also shows that formulating management strategies that improve reproductive performance in Atlantic Salmon reared at elevated temperature is no easy feat. However, as the CRC are learning more about how reproductive physiology changes with various therapeutic, biological (i.e. age) and environmental conditions, the CRC is becoming better positioned to make informed choices that will benefit the aquaculture industry in Australia.

The purpose of the research was to determine whether the endocrine profiles of plasma follicle stimulating hormone (FSH) and luteinizing hormone (LH) changed as a result of thermal exposure, broodstock age or hormonal treatment in farmed female Atlantic Salmon. FSH promotes the production of testosterone, oestrogen and oocyte (egg) growth while LH controls oocyte maturation and ovulation. There is some evidence to suggest that fish reared at 22 °C (equivalent of a warm Tasmanian summer) have higher levels of circulating FSH compared to fish reared at 14 °C (ideal temperature) and this is probably due to abnormal oestrogen levels (and therefore feedback mechanisms) in fish reared at high temperature.

An in vitro experiment was performed in Seattle that investigated the affect of elevated temperature and hormonal treatment on the expression levels of genes involved in testosterone production in ovarian fragments isolated from Coho Salmon. For the first time, it was shown that the relative expression of several genes involved in testosterone production was impaired by increased temperature in vitro. From this trial, a suite of candidate genes that may contribute to low T levels and therefore reproductive performance in Atlantic Salmon reared at 22 °C have been identified.

These results combined with previous work demonstrate that dysfunction at multiple levels in the endocrine cascade controlling reproductive development in thermally challenged female Atlantic Salmon is likely. This work also shows that formulating management strategies that improve reproductive performance in Atlantic Salmon reared at elevated temperature is no easy feat. However, as the CRC are learning more about how reproductive physiology changes with various therapeutic, biological (i.e. age) and environmental conditions, the CRC is becoming better positioned to make informed choices that will benefit the aquaculture industry in Australia.

The purpose of the research was to determine whether the endocrine profiles of plasma follicle stimulating hormone (FSH) and luteinizing hormone (LH) changed as a result of thermal exposure, broodstock age or hormonal treatment in farmed female Atlantic Salmon. FSH promotes the production of testosterone, oestrogen and oocyte (egg) growth while LH controls oocyte maturation and ovulation. There is some evidence to suggest that fish reared at 22 °C (equivalent of a warm Tasmanian summer) have higher levels of circulating FSH compared to fish reared at 14 °C (ideal temperature) and this is probably due to abnormal oestrogen levels (and therefore feedback mechanisms) in fish reared at high temperature.

An in vitro experiment was performed in Seattle that investigated the affect of elevated temperature and hormonal treatment on the expression levels of genes involved in testosterone production in ovarian fragments isolated from Coho Salmon. For the first time, it was shown that the relative expression of several genes involved in testosterone production was impaired by increased temperature in vitro. From this trial, a suite of candidate genes that may contribute to low T levels and therefore reproductive performance in Atlantic Salmon reared at 22 °C have been identified.

These results combined with previous work demonstrate that dysfunction at multiple levels in the endocrine cascade controlling reproductive development in thermally challenged female Atlantic Salmon is likely. This work also shows that formulating management strategies that improve reproductive performance in Atlantic Salmon reared at elevated temperature is no easy feat. However, as the CRC are learning more about how reproductive physiology changes with various therapeutic, biological (i.e. age) and environmental conditions, the CRC is becoming better positioned to make informed choices that will benefit the aquaculture industry in Australia.

The purpose of the research was to determine whether the endocrine profiles of plasma follicle stimulating hormone (FSH) and luteinizing hormone (LH) changed as a result of thermal exposure, broodstock age or hormonal treatment in farmed female Atlantic Salmon. FSH promotes the production of testosterone, oestrogen and oocyte (egg) growth while LH controls oocyte maturation and ovulation. There is some evidence to suggest that fish reared at 22 °C (equivalent of a warm Tasmanian summer) have higher levels of circulating FSH compared to fish reared at 14 °C (ideal temperature) and this is probably due to abnormal oestrogen levels (and therefore feedback mechanisms) in fish reared at high temperature.

An in vitro experiment was performed in Seattle that investigated the affect of elevated temperature and hormonal treatment on the expression levels of genes involved in testosterone production in ovarian fragments isolated from Coho Salmon. For the first time, it was shown that the relative expression of several genes involved in testosterone production was impaired by increased temperature in vitro. From this trial, a suite of candidate genes that may contribute to low T levels and therefore reproductive performance in Atlantic Salmon reared at 22 °C have been identified.

These results combined with previous work demonstrate that dysfunction at multiple levels in the endocrine cascade controlling reproductive development in thermally challenged female Atlantic Salmon is likely. This work also shows that formulating management strategies that improve reproductive performance in Atlantic Salmon reared at elevated temperature is no easy feat. However, as the CRC are learning more about how reproductive physiology changes with various therapeutic, biological (i.e. age) and environmental conditions, the CRC is becoming better positioned to make informed choices that will benefit the aquaculture industry in Australia.

The purpose of the research was to determine whether the endocrine profiles of plasma follicle stimulating hormone (FSH) and luteinizing hormone (LH) changed as a result of thermal exposure, broodstock age or hormonal treatment in farmed female Atlantic Salmon. FSH promotes the production of testosterone, oestrogen and oocyte (egg) growth while LH controls oocyte maturation and ovulation. There is some evidence to suggest that fish reared at 22 °C (equivalent of a warm Tasmanian summer) have higher levels of circulating FSH compared to fish reared at 14 °C (ideal temperature) and this is probably due to abnormal oestrogen levels (and therefore feedback mechanisms) in fish reared at high temperature.

An in vitro experiment was performed in Seattle that investigated the affect of elevated temperature and hormonal treatment on the expression levels of genes involved in testosterone production in ovarian fragments isolated from Coho Salmon. For the first time, it was shown that the relative expression of several genes involved in testosterone production was impaired by increased temperature in vitro. From this trial, a suite of candidate genes that may contribute to low T levels and therefore reproductive performance in Atlantic Salmon reared at 22 °C have been identified.

These results combined with previous work demonstrate that dysfunction at multiple levels in the endocrine cascade controlling reproductive development in thermally challenged female Atlantic Salmon is likely. This work also shows that formulating management strategies that improve reproductive performance in Atlantic Salmon reared at elevated temperature is no easy feat. However, as the CRC are learning more about how reproductive physiology changes with various therapeutic, biological (i.e. age) and environmental conditions, the CRC is becoming better positioned to make informed choices that will benefit the aquaculture industry in Australia.

The purpose of the research was to determine whether the endocrine profiles of plasma follicle stimulating hormone (FSH) and luteinizing hormone (LH) changed as a result of thermal exposure, broodstock age or hormonal treatment in farmed female Atlantic Salmon. FSH promotes the production of testosterone, oestrogen and oocyte (egg) growth while LH controls oocyte maturation and ovulation. There is some evidence to suggest that fish reared at 22 °C (equivalent of a warm Tasmanian summer) have higher levels of circulating FSH compared to fish reared at 14 °C (ideal temperature) and this is probably due to abnormal oestrogen levels (and therefore feedback mechanisms) in fish reared at high temperature.

An in vitro experiment was performed in Seattle that investigated the affect of elevated temperature and hormonal treatment on the expression levels of genes involved in testosterone production in ovarian fragments isolated from Coho Salmon. For the first time, it was shown that the relative expression of several genes involved in testosterone production was impaired by increased temperature in vitro. From this trial, a suite of candidate genes that may contribute to low T levels and therefore reproductive performance in Atlantic Salmon reared at 22 °C have been identified.

These results combined with previous work demonstrate that dysfunction at multiple levels in the endocrine cascade controlling reproductive development in thermally challenged female Atlantic Salmon is likely. This work also shows that formulating management strategies that improve reproductive performance in Atlantic Salmon reared at elevated temperature is no easy feat. However, as the CRC are learning more about how reproductive physiology changes with various therapeutic, biological (i.e. age) and environmental conditions, the CRC is becoming better positioned to make informed choices that will benefit the aquaculture industry in Australia.

The purpose of the research was to determine whether the endocrine profiles of plasma follicle stimulating hormone (FSH) and luteinizing hormone (LH) changed as a result of thermal exposure, broodstock age or hormonal treatment in farmed female Atlantic Salmon. FSH promotes the production of testosterone, oestrogen and oocyte (egg) growth while LH controls oocyte maturation and ovulation. There is some evidence to suggest that fish reared at 22 °C (equivalent of a warm Tasmanian summer) have higher levels of circulating FSH compared to fish reared at 14 °C (ideal temperature) and this is probably due to abnormal oestrogen levels (and therefore feedback mechanisms) in fish reared at high temperature.

An in vitro experiment was performed in Seattle that investigated the affect of elevated temperature and hormonal treatment on the expression levels of genes involved in testosterone production in ovarian fragments isolated from Coho Salmon. For the first time, it was shown that the relative expression of several genes involved in testosterone production was impaired by increased temperature in vitro. From this trial, a suite of candidate genes that may contribute to low T levels and therefore reproductive performance in Atlantic Salmon reared at 22 °C have been identified.

These results combined with previous work demonstrate that dysfunction at multiple levels in the endocrine cascade controlling reproductive development in thermally challenged female Atlantic Salmon is likely. This work also shows that formulating management strategies that improve reproductive performance in Atlantic Salmon reared at elevated temperature is no easy feat. However, as the CRC are learning more about how reproductive physiology changes with various therapeutic, biological (i.e. age) and environmental conditions, the CRC is becoming better positioned to make informed choices that will benefit the aquaculture industry in Australia.

The purpose of the research was to determine whether the endocrine profiles of plasma follicle stimulating hormone (FSH) and luteinizing hormone (LH) changed as a result of thermal exposure, broodstock age or hormonal treatment in farmed female Atlantic Salmon. FSH promotes the production of testosterone, oestrogen and oocyte (egg) growth while LH controls oocyte maturation and ovulation. There is some evidence to suggest that fish reared at 22 °C (equivalent of a warm Tasmanian summer) have higher levels of circulating FSH compared to fish reared at 14 °C (ideal temperature) and this is probably due to abnormal oestrogen levels (and therefore feedback mechanisms) in fish reared at high temperature.

An in vitro experiment was performed in Seattle that investigated the affect of elevated temperature and hormonal treatment on the expression levels of genes involved in testosterone production in ovarian fragments isolated from Coho Salmon. For the first time, it was shown that the relative expression of several genes involved in testosterone production was impaired by increased temperature in vitro. From this trial, a suite of candidate genes that may contribute to low T levels and therefore reproductive performance in Atlantic Salmon reared at 22 °C have been identified.

These results combined with previous work demonstrate that dysfunction at multiple levels in the endocrine cascade controlling reproductive development in thermally challenged female Atlantic Salmon is likely. This work also shows that formulating management strategies that improve reproductive performance in Atlantic Salmon reared at elevated temperature is no easy feat. However, as the CRC are learning more about how reproductive physiology changes with various therapeutic, biological (i.e. age) and environmental conditions, the CRC is becoming better positioned to make informed choices that will benefit the aquaculture industry in Australia.

The purpose of the research was to determine whether the endocrine profiles of plasma follicle stimulating hormone (FSH) and luteinizing hormone (LH) changed as a result of thermal exposure, broodstock age or hormonal treatment in farmed female Atlantic Salmon. FSH promotes the production of testosterone, oestrogen and oocyte (egg) growth while LH controls oocyte maturation and ovulation. There is some evidence to suggest that fish reared at 22 °C (equivalent of a warm Tasmanian summer) have higher levels of circulating FSH compared to fish reared at 14 °C (ideal temperature) and this is probably due to abnormal oestrogen levels (and therefore feedback mechanisms) in fish reared at high temperature.

An in vitro experiment was performed in Seattle that investigated the affect of elevated temperature and hormonal treatment on the expression levels of genes involved in testosterone production in ovarian fragments isolated from Coho Salmon. For the first time, it was shown that the relative expression of several genes involved in testosterone production was impaired by increased temperature in vitro. From this trial, a suite of candidate genes that may contribute to low T levels and therefore reproductive performance in Atlantic Salmon reared at 22 °C have been identified.

These results combined with previous work demonstrate that dysfunction at multiple levels in the endocrine cascade controlling reproductive development in thermally challenged female Atlantic Salmon is likely. This work also shows that formulating management strategies that improve reproductive performance in Atlantic Salmon reared at elevated temperature is no easy feat. However, as the CRC are learning more about how reproductive physiology changes with various therapeutic, biological (i.e. age) and environmental conditions, the CRC is becoming better positioned to make informed choices that will benefit the aquaculture industry in Australia.

The purpose of the research was to determine whether the endocrine profiles of plasma follicle stimulating hormone (FSH) and luteinizing hormone (LH) changed as a result of thermal exposure, broodstock age or hormonal treatment in farmed female Atlantic Salmon. FSH promotes the production of testosterone, oestrogen and oocyte (egg) growth while LH controls oocyte maturation and ovulation. There is some evidence to suggest that fish reared at 22 °C (equivalent of a warm Tasmanian summer) have higher levels of circulating FSH compared to fish reared at 14 °C (ideal temperature) and this is probably due to abnormal oestrogen levels (and therefore feedback mechanisms) in fish reared at high temperature.

An in vitro experiment was performed in Seattle that investigated the affect of elevated temperature and hormonal treatment on the expression levels of genes involved in testosterone production in ovarian fragments isolated from Coho Salmon. For the first time, it was shown that the relative expression of several genes involved in testosterone production was impaired by increased temperature in vitro. From this trial, a suite of candidate genes that may contribute to low T levels and therefore reproductive performance in Atlantic Salmon reared at 22 °C have been identified.

These results combined with previous work demonstrate that dysfunction at multiple levels in the endocrine cascade controlling reproductive development in thermally challenged female Atlantic Salmon is likely. This work also shows that formulating management strategies that improve reproductive performance in Atlantic Salmon reared at elevated temperature is no easy feat. However, as the CRC are learning more about how reproductive physiology changes with various therapeutic, biological (i.e. age) and environmental conditions, the CRC is becoming better positioned to make informed choices that will benefit the aquaculture industry in Australia.

The purpose of the research was to determine whether the endocrine profiles of plasma follicle stimulating hormone (FSH) and luteinizing hormone (LH) changed as a result of thermal exposure, broodstock age or hormonal treatment in farmed female Atlantic Salmon. FSH promotes the production of testosterone, oestrogen and oocyte (egg) growth while LH controls oocyte maturation and ovulation. There is some evidence to suggest that fish reared at 22 °C (equivalent of a warm Tasmanian summer) have higher levels of circulating FSH compared to fish reared at 14 °C (ideal temperature) and this is probably due to abnormal oestrogen levels (and therefore feedback mechanisms) in fish reared at high temperature.

An in vitro experiment was performed in Seattle that investigated the affect of elevated temperature and hormonal treatment on the expression levels of genes involved in testosterone production in ovarian fragments isolated from Coho Salmon. For the first time, it was shown that the relative expression of several genes involved in testosterone production was impaired by increased temperature in vitro. From this trial, a suite of candidate genes that may contribute to low T levels and therefore reproductive performance in Atlantic Salmon reared at 22 °C have been identified.

These results combined with previous work demonstrate that dysfunction at multiple levels in the endocrine cascade controlling reproductive development in thermally challenged female Atlantic Salmon is likely. This work also shows that formulating management strategies that improve reproductive performance in Atlantic Salmon reared at elevated temperature is no easy feat. However, as the CRC are learning more about how reproductive physiology changes with various therapeutic, biological (i.e. age) and environmental conditions, the CRC is becoming better positioned to make informed choices that will benefit the aquaculture industry in Australia.

The purpose of the research was to determine whether the endocrine profiles of plasma follicle stimulating hormone (FSH) and luteinizing hormone (LH) changed as a result of thermal exposure, broodstock age or hormonal treatment in farmed female Atlantic Salmon. FSH promotes the production of testosterone, oestrogen and oocyte (egg) growth while LH controls oocyte maturation and ovulation. There is some evidence to suggest that fish reared at 22 °C (equivalent of a warm Tasmanian summer) have higher levels of circulating FSH compared to fish reared at 14 °C (ideal temperature) and this is probably due to abnormal oestrogen levels (and therefore feedback mechanisms) in fish reared at high temperature.

An in vitro experiment was performed in Seattle that investigated the affect of elevated temperature and hormonal treatment on the expression levels of genes involved in testosterone production in ovarian fragments isolated from Coho Salmon. For the first time, it was shown that the relative expression of several genes involved in testosterone production was impaired by increased temperature in vitro. From this trial, a suite of candidate genes that may contribute to low T levels and therefore reproductive performance in Atlantic Salmon reared at 22 °C have been identified.

These results combined with previous work demonstrate that dysfunction at multiple levels in the endocrine cascade controlling reproductive development in thermally challenged female Atlantic Salmon is likely. This work also shows that formulating management strategies that improve reproductive performance in Atlantic Salmon reared at elevated temperature is no easy feat. However, as the CRC are learning more about how reproductive physiology changes with various therapeutic, biological (i.e. age) and environmental conditions, the CRC is becoming better positioned to make informed choices that will benefit the aquaculture industry in Australia.

The purpose of the research was to determine whether the endocrine profiles of plasma follicle stimulating hormone (FSH) and luteinizing hormone (LH) changed as a result of thermal exposure, broodstock age or hormonal treatment in farmed female Atlantic Salmon. FSH promotes the production of testosterone, oestrogen and oocyte (egg) growth while LH controls oocyte maturation and ovulation. There is some evidence to suggest that fish reared at 22 °C (equivalent of a warm Tasmanian summer) have higher levels of circulating FSH compared to fish reared at 14 °C (ideal temperature) and this is probably due to abnormal oestrogen levels (and therefore feedback mechanisms) in fish reared at high temperature.

An in vitro experiment was performed in Seattle that investigated the affect of elevated temperature and hormonal treatment on the expression levels of genes involved in testosterone production in ovarian fragments isolated from Coho Salmon. For the first time, it was shown that the relative expression of several genes involved in testosterone production was impaired by increased temperature in vitro. From this trial, a suite of candidate genes that may contribute to low T levels and therefore reproductive performance in Atlantic Salmon reared at 22 °C have been identified.

These results combined with previous work demonstrate that dysfunction at multiple levels in the endocrine cascade controlling reproductive development in thermally challenged female Atlantic Salmon is likely. This work also shows that formulating management strategies that improve reproductive performance in Atlantic Salmon reared at elevated temperature is no easy feat. However, as the CRC are learning more about how reproductive physiology changes with various therapeutic, biological (i.e. age) and environmental conditions, the CRC is becoming better positioned to make informed choices that will benefit the aquaculture industry in Australia.

The purpose of the research was to determine whether the endocrine profiles of plasma follicle stimulating hormone (FSH) and luteinizing hormone (LH) changed as a result of thermal exposure, broodstock age or hormonal treatment in farmed female Atlantic Salmon. FSH promotes the production of testosterone, oestrogen and oocyte (egg) growth while LH controls oocyte maturation and ovulation. There is some evidence to suggest that fish reared at 22 °C (equivalent of a warm Tasmanian summer) have higher levels of circulating FSH compared to fish reared at 14 °C (ideal temperature) and this is probably due to abnormal oestrogen levels (and therefore feedback mechanisms) in fish reared at high temperature.

An in vitro experiment was performed in Seattle that investigated the affect of elevated temperature and hormonal treatment on the expression levels of genes involved in testosterone production in ovarian fragments isolated from Coho Salmon. For the first time, it was shown that the relative expression of several genes involved in testosterone production was impaired by increased temperature in vitro. From this trial, a suite of candidate genes that may contribute to low T levels and therefore reproductive performance in Atlantic Salmon reared at 22 °C have been identified.

These results combined with previous work demonstrate that dysfunction at multiple levels in the endocrine cascade controlling reproductive development in thermally challenged female Atlantic Salmon is likely. This work also shows that formulating management strategies that improve reproductive performance in Atlantic Salmon reared at elevated temperature is no easy feat. However, as the CRC are learning more about how reproductive physiology changes with various therapeutic, biological (i.e. age) and environmental conditions, the CRC is becoming better positioned to make informed choices that will benefit the aquaculture industry in Australia.

The purpose of the research was to determine whether the endocrine profiles of plasma follicle stimulating hormone (FSH) and luteinizing hormone (LH) changed as a result of thermal exposure, broodstock age or hormonal treatment in farmed female Atlantic Salmon. FSH promotes the production of testosterone, oestrogen and oocyte (egg) growth while LH controls oocyte maturation and ovulation. There is some evidence to suggest that fish reared at 22 °C (equivalent of a warm Tasmanian summer) have higher levels of circulating FSH compared to fish reared at 14 °C (ideal temperature) and this is probably due to abnormal oestrogen levels (and therefore feedback mechanisms) in fish reared at high temperature.

An in vitro experiment was performed in Seattle that investigated the affect of elevated temperature and hormonal treatment on the expression levels of genes involved in testosterone production in ovarian fragments isolated from Coho Salmon. For the first time, it was shown that the relative expression of several genes involved in testosterone production was impaired by increased temperature in vitro. From this trial, a suite of candidate genes that may contribute to low T levels and therefore reproductive performance in Atlantic Salmon reared at 22 °C have been identified.

These results combined with previous work demonstrate that dysfunction at multiple levels in the endocrine cascade controlling reproductive development in thermally challenged female Atlantic Salmon is likely. This work also shows that formulating management strategies that improve reproductive performance in Atlantic Salmon reared at elevated temperature is no easy feat. However, as the CRC are learning more about how reproductive physiology changes with various therapeutic, biological (i.e. age) and environmental conditions, the CRC is becoming better positioned to make informed choices that will benefit the aquaculture industry in Australia.

The purpose of the research was to determine whether the endocrine profiles of plasma follicle stimulating hormone (FSH) and luteinizing hormone (LH) changed as a result of thermal exposure, broodstock age or hormonal treatment in farmed female Atlantic Salmon. FSH promotes the production of testosterone, oestrogen and oocyte (egg) growth while LH controls oocyte maturation and ovulation. There is some evidence to suggest that fish reared at 22 °C (equivalent of a warm Tasmanian summer) have higher levels of circulating FSH compared to fish reared at 14 °C (ideal temperature) and this is probably due to abnormal oestrogen levels (and therefore feedback mechanisms) in fish reared at high temperature.

An in vitro experiment was performed in Seattle that investigated the affect of elevated temperature and hormonal treatment on the expression levels of genes involved in testosterone production in ovarian fragments isolated from Coho Salmon. For the first time, it was shown that the relative expression of several genes involved in testosterone production was impaired by increased temperature in vitro. From this trial, a suite of candidate genes that may contribute to low T levels and therefore reproductive performance in Atlantic Salmon reared at 22 °C have been identified.

These results combined with previous work demonstrate that dysfunction at multiple levels in the endocrine cascade controlling reproductive development in thermally challenged female Atlantic Salmon is likely. This work also shows that formulating management strategies that improve reproductive performance in Atlantic Salmon reared at elevated temperature is no easy feat. However, as the CRC are learning more about how reproductive physiology changes with various therapeutic, biological (i.e. age) and environmental conditions, the CRC is becoming better positioned to make informed choices that will benefit the aquaculture industry in Australia.

The purpose of the research was to determine whether the endocrine profiles of plasma follicle stimulating hormone (FSH) and luteinizing hormone (LH) changed as a result of thermal exposure, broodstock age or hormonal treatment in farmed female Atlantic Salmon. FSH promotes the production of testosterone, oestrogen and oocyte (egg) growth while LH controls oocyte maturation and ovulation. There is some evidence to suggest that fish reared at 22 °C (equivalent of a warm Tasmanian summer) have higher levels of circulating FSH compared to fish reared at 14 °C (ideal temperature) and this is probably due to abnormal oestrogen levels (and therefore feedback mechanisms) in fish reared at high temperature.

An in vitro experiment was performed in Seattle that investigated the affect of elevated temperature and hormonal treatment on the expression levels of genes involved in testosterone production in ovarian fragments isolated from Coho Salmon. For the first time, it was shown that the relative expression of several genes involved in testosterone production was impaired by increased temperature in vitro. From this trial, a suite of candidate genes that may contribute to low T levels and therefore reproductive performance in Atlantic Salmon reared at 22 °C have been identified.

These results combined with previous work demonstrate that dysfunction at multiple levels in the endocrine cascade controlling reproductive development in thermally challenged female Atlantic Salmon is likely. This work also shows that formulating management strategies that improve reproductive performance in Atlantic Salmon reared at elevated temperature is no easy feat. However, as the CRC are learning more about how reproductive physiology changes with various therapeutic, biological (i.e. age) and environmental conditions, the CRC is becoming better positioned to make informed choices that will benefit the aquaculture industry in Australia.

The purpose of the research was to determine whether the endocrine profiles of plasma follicle stimulating hormone (FSH) and luteinizing hormone (LH) changed as a result of thermal exposure, broodstock age or hormonal treatment in farmed female Atlantic Salmon. FSH promotes the production of testosterone, oestrogen and oocyte (egg) growth while LH controls oocyte maturation and ovulation. There is some evidence to suggest that fish reared at 22 °C (equivalent of a warm Tasmanian summer) have higher levels of circulating FSH compared to fish reared at 14 °C (ideal temperature) and this is probably due to abnormal oestrogen levels (and therefore feedback mechanisms) in fish reared at high temperature.

An in vitro experiment was performed in Seattle that investigated the affect of elevated temperature and hormonal treatment on the expression levels of genes involved in testosterone production in ovarian fragments isolated from Coho Salmon. For the first time, it was shown that the relative expression of several genes involved in testosterone production was impaired by increased temperature in vitro. From this trial, a suite of candidate genes that may contribute to low T levels and therefore reproductive performance in Atlantic Salmon reared at 22 °C have been identified.

These results combined with previous work demonstrate that dysfunction at multiple levels in the endocrine cascade controlling reproductive development in thermally challenged female Atlantic Salmon is likely. This work also shows that formulating management strategies that improve reproductive performance in Atlantic Salmon reared at elevated temperature is no easy feat. However, as the CRC are learning more about how reproductive physiology changes with various therapeutic, biological (i.e. age) and environmental conditions, the CRC is becoming better positioned to make informed choices that will benefit the aquaculture industry in Australia.

The purpose of the research was to determine whether the endocrine profiles of plasma follicle stimulating hormone (FSH) and luteinizing hormone (LH) changed as a result of thermal exposure, broodstock age or hormonal treatment in farmed female Atlantic Salmon. FSH promotes the production of testosterone, oestrogen and oocyte (egg) growth while LH controls oocyte maturation and ovulation. There is some evidence to suggest that fish reared at 22 °C (equivalent of a warm Tasmanian summer) have higher levels of circulating FSH compared to fish reared at 14 °C (ideal temperature) and this is probably due to abnormal oestrogen levels (and therefore feedback mechanisms) in fish reared at high temperature.

An in vitro experiment was performed in Seattle that investigated the affect of elevated temperature and hormonal treatment on the expression levels of genes involved in testosterone production in ovarian fragments isolated from Coho Salmon. For the first time, it was shown that the relative expression of several genes involved in testosterone production was impaired by increased temperature in vitro. From this trial, a suite of candidate genes that may contribute to low T levels and therefore reproductive performance in Atlantic Salmon reared at 22 °C have been identified.

These results combined with previous work demonstrate that dysfunction at multiple levels in the endocrine cascade controlling reproductive development in thermally challenged female Atlantic Salmon is likely. This work also shows that formulating management strategies that improve reproductive performance in Atlantic Salmon reared at elevated temperature is no easy feat. However, as the CRC are learning more about how reproductive physiology changes with various therapeutic, biological (i.e. age) and environmental conditions, the CRC is becoming better positioned to make informed choices that will benefit the aquaculture industry in Australia.

The purpose of the research was to determine whether the endocrine profiles of plasma follicle stimulating hormone (FSH) and luteinizing hormone (LH) changed as a result of thermal exposure, broodstock age or hormonal treatment in farmed female Atlantic Salmon. FSH promotes the production of testosterone, oestrogen and oocyte (egg) growth while LH controls oocyte maturation and ovulation. There is some evidence to suggest that fish reared at 22 °C (equivalent of a warm Tasmanian summer) have higher levels of circulating FSH compared to fish reared at 14 °C (ideal temperature) and this is probably due to abnormal oestrogen levels (and therefore feedback mechanisms) in fish reared at high temperature.

An in vitro experiment was performed in Seattle that investigated the affect of elevated temperature and hormonal treatment on the expression levels of genes involved in testosterone production in ovarian fragments isolated from Coho Salmon. For the first time, it was shown that the relative expression of several genes involved in testosterone production was impaired by increased temperature in vitro. From this trial, a suite of candidate genes that may contribute to low T levels and therefore reproductive performance in Atlantic Salmon reared at 22 °C have been identified.

These results combined with previous work demonstrate that dysfunction at multiple levels in the endocrine cascade controlling reproductive development in thermally challenged female Atlantic Salmon is likely. This work also shows that formulating management strategies that improve reproductive performance in Atlantic Salmon reared at elevated temperature is no easy feat. However, as the CRC are learning more about how reproductive physiology changes with various therapeutic, biological (i.e. age) and environmental conditions, the CRC is becoming better positioned to make informed choices that will benefit the aquaculture industry in Australia.

The purpose of the research was to determine whether the endocrine profiles of plasma follicle stimulating hormone (FSH) and luteinizing hormone (LH) changed as a result of thermal exposure, broodstock age or hormonal treatment in farmed female Atlantic Salmon. FSH promotes the production of testosterone, oestrogen and oocyte (egg) growth while LH controls oocyte maturation and ovulation. There is some evidence to suggest that fish reared at 22 °C (equivalent of a warm Tasmanian summer) have higher levels of circulating FSH compared to fish reared at 14 °C (ideal temperature) and this is probably due to abnormal oestrogen levels (and therefore feedback mechanisms) in fish reared at high temperature.

An in vitro experiment was performed in Seattle that investigated the affect of elevated temperature and hormonal treatment on the expression levels of genes involved in testosterone production in ovarian fragments isolated from Coho Salmon. For the first time, it was shown that the relative expression of several genes involved in testosterone production was impaired by increased temperature in vitro. From this trial, a suite of candidate genes that may contribute to low T levels and therefore reproductive performance in Atlantic Salmon reared at 22 °C have been identified.

These results combined with previous work demonstrate that dysfunction at multiple levels in the endocrine cascade controlling reproductive development in thermally challenged female Atlantic Salmon is likely. This work also shows that formulating management strategies that improve reproductive performance in Atlantic Salmon reared at elevated temperature is no easy feat. However, as the CRC are learning more about how reproductive physiology changes with various therapeutic, biological (i.e. age) and environmental conditions, the CRC is becoming better positioned to make informed choices that will benefit the aquaculture industry in Australia.

The purpose of the research was to determine whether the endocrine profiles of plasma follicle stimulating hormone (FSH) and luteinizing hormone (LH) changed as a result of thermal exposure, broodstock age or hormonal treatment in farmed female Atlantic Salmon. FSH promotes the production of testosterone, oestrogen and oocyte (egg) growth while LH controls oocyte maturation and ovulation. There is some evidence to suggest that fish reared at 22 °C (equivalent of a warm Tasmanian summer) have higher levels of circulating FSH compared to fish reared at 14 °C (ideal temperature) and this is probably due to abnormal oestrogen levels (and therefore feedback mechanisms) in fish reared at high temperature.

An in vitro experiment was performed in Seattle that investigated the affect of elevated temperature and hormonal treatment on the expression levels of genes involved in testosterone production in ovarian fragments isolated from Coho Salmon. For the first time, it was shown that the relative expression of several genes involved in testosterone production was impaired by increased temperature in vitro. From this trial, a suite of candidate genes that may contribute to low T levels and therefore reproductive performance in Atlantic Salmon reared at 22 °C have been identified.

These results combined with previous work demonstrate that dysfunction at multiple levels in the endocrine cascade controlling reproductive development in thermally challenged female Atlantic Salmon is likely. This work also shows that formulating management strategies that improve reproductive performance in Atlantic Salmon reared at elevated temperature is no easy feat. However, as the CRC are learning more about how reproductive physiology changes with various therapeutic, biological (i.e. age) and environmental conditions, the CRC is becoming better positioned to make informed choices that will benefit the aquaculture industry in Australia.

The purpose of the research was to determine whether the endocrine profiles of plasma follicle stimulating hormone (FSH) and luteinizing hormone (LH) changed as a result of thermal exposure, broodstock age or hormonal treatment in farmed female Atlantic Salmon. FSH promotes the production of testosterone, oestrogen and oocyte (egg) growth while LH controls oocyte maturation and ovulation. There is some evidence to suggest that fish reared at 22 °C (equivalent of a warm Tasmanian summer) have higher levels of circulating FSH compared to fish reared at 14 °C (ideal temperature) and this is probably due to abnormal oestrogen levels (and therefore feedback mechanisms) in fish reared at high temperature.

An in vitro experiment was performed in Seattle that investigated the affect of elevated temperature and hormonal treatment on the expression levels of genes involved in testosterone production in ovarian fragments isolated from Coho Salmon. For the first time, it was shown that the relative expression of several genes involved in testosterone production was impaired by increased temperature in vitro. From this trial, a suite of candidate genes that may contribute to low T levels and therefore reproductive performance in Atlantic Salmon reared at 22 °C have been identified.

These results combined with previous work demonstrate that dysfunction at multiple levels in the endocrine cascade controlling reproductive development in thermally challenged female Atlantic Salmon is likely. This work also shows that formulating management strategies that improve reproductive performance in Atlantic Salmon reared at elevated temperature is no easy feat. However, as the CRC are learning more about how reproductive physiology changes with various therapeutic, biological (i.e. age) and environmental conditions, the CRC is becoming better positioned to make informed choices that will benefit the aquaculture industry in Australia.

The purpose of the research was to determine whether the endocrine profiles of plasma follicle stimulating hormone (FSH) and luteinizing hormone (LH) changed as a result of thermal exposure, broodstock age or hormonal treatment in farmed female Atlantic Salmon. FSH promotes the production of testosterone, oestrogen and oocyte (egg) growth while LH controls oocyte maturation and ovulation. There is some evidence to suggest that fish reared at 22 °C (equivalent of a warm Tasmanian summer) have higher levels of circulating FSH compared to fish reared at 14 °C (ideal temperature) and this is probably due to abnormal oestrogen levels (and therefore feedback mechanisms) in fish reared at high temperature.

An in vitro experiment was performed in Seattle that investigated the affect of elevated temperature and hormonal treatment on the expression levels of genes involved in testosterone production in ovarian fragments isolated from Coho Salmon. For the first time, it was shown that the relative expression of several genes involved in testosterone production was impaired by increased temperature in vitro. From this trial, a suite of candidate genes that may contribute to low T levels and therefore reproductive performance in Atlantic Salmon reared at 22 °C have been identified.

These results combined with previous work demonstrate that dysfunction at multiple levels in the endocrine cascade controlling reproductive development in thermally challenged female Atlantic Salmon is likely. This work also shows that formulating management strategies that improve reproductive performance in Atlantic Salmon reared at elevated temperature is no easy feat. However, as the CRC are learning more about how reproductive physiology changes with various therapeutic, biological (i.e. age) and environmental conditions, the CRC is becoming better positioned to make informed choices that will benefit the aquaculture industry in Australia.

The purpose of the research was to determine whether the endocrine profiles of plasma follicle stimulating hormone (FSH) and luteinizing hormone (LH) changed as a result of thermal exposure, broodstock age or hormonal treatment in farmed female Atlantic Salmon. FSH promotes the production of testosterone, oestrogen and oocyte (egg) growth while LH controls oocyte maturation and ovulation. There is some evidence to suggest that fish reared at 22 °C (equivalent of a warm Tasmanian summer) have higher levels of circulating FSH compared to fish reared at 14 °C (ideal temperature) and this is probably due to abnormal oestrogen levels (and therefore feedback mechanisms) in fish reared at high temperature.

An in vitro experiment was performed in Seattle that investigated the affect of elevated temperature and hormonal treatment on the expression levels of genes involved in testosterone production in ovarian fragments isolated from Coho Salmon. For the first time, it was shown that the relative expression of several genes involved in testosterone production was impaired by increased temperature in vitro. From this trial, a suite of candidate genes that may contribute to low T levels and therefore reproductive performance in Atlantic Salmon reared at 22 °C have been identified.

These results combined with previous work demonstrate that dysfunction at multiple levels in the endocrine cascade controlling reproductive development in thermally challenged female Atlantic Salmon is likely. This work also shows that formulating management strategies that improve reproductive performance in Atlantic Salmon reared at elevated temperature is no easy feat. However, as the CRC are learning more about how reproductive physiology changes with various therapeutic, biological (i.e. age) and environmental conditions, the CRC is becoming better positioned to make informed choices that will benefit the aquaculture industry in Australia.

The purpose of the research was to determine whether the endocrine profiles of plasma follicle stimulating hormone (FSH) and luteinizing hormone (LH) changed as a result of thermal exposure, broodstock age or hormonal treatment in farmed female Atlantic Salmon. FSH promotes the production of testosterone, oestrogen and oocyte (egg) growth while LH controls oocyte maturation and ovulation. There is some evidence to suggest that fish reared at 22 °C (equivalent of a warm Tasmanian summer) have higher levels of circulating FSH compared to fish reared at 14 °C (ideal temperature) and this is probably due to abnormal oestrogen levels (and therefore feedback mechanisms) in fish reared at high temperature.

An in vitro experiment was performed in Seattle that investigated the affect of elevated temperature and hormonal treatment on the expression levels of genes involved in testosterone production in ovarian fragments isolated from Coho Salmon. For the first time, it was shown that the relative expression of several genes involved in testosterone production was impaired by increased temperature in vitro. From this trial, a suite of candidate genes that may contribute to low T levels and therefore reproductive performance in Atlantic Salmon reared at 22 °C have been identified.

These results combined with previous work demonstrate that dysfunction at multiple levels in the endocrine cascade controlling reproductive development in thermally challenged female Atlantic Salmon is likely. This work also shows that formulating management strategies that improve reproductive performance in Atlantic Salmon reared at elevated temperature is no easy feat. However, as the CRC are learning more about how reproductive physiology changes with various therapeutic, biological (i.e. age) and environmental conditions, the CRC is becoming better positioned to make informed choices that will benefit the aquaculture industry in Australia.

The purpose of the research was to determine whether the endocrine profiles of plasma follicle stimulating hormone (FSH) and luteinizing hormone (LH) changed as a result of thermal exposure, broodstock age or hormonal treatment in farmed female Atlantic Salmon. FSH promotes the production of testosterone, oestrogen and oocyte (egg) growth while LH controls oocyte maturation and ovulation. There is some evidence to suggest that fish reared at 22 °C (equivalent of a warm Tasmanian summer) have higher levels of circulating FSH compared to fish reared at 14 °C (ideal temperature) and this is probably due to abnormal oestrogen levels (and therefore feedback mechanisms) in fish reared at high temperature.

An in vitro experiment was performed in Seattle that investigated the affect of elevated temperature and hormonal treatment on the expression levels of genes involved in testosterone production in ovarian fragments isolated from Coho Salmon. For the first time, it was shown that the relative expression of several genes involved in testosterone production was impaired by increased temperature in vitro. From this trial, a suite of candidate genes that may contribute to low T levels and therefore reproductive performance in Atlantic Salmon reared at 22 °C have been identified.

These results combined with previous work demonstrate that dysfunction at multiple levels in the endocrine cascade controlling reproductive development in thermally challenged female Atlantic Salmon is likely. This work also shows that formulating management strategies that improve reproductive performance in Atlantic Salmon reared at elevated temperature is no easy feat. However, as the CRC are learning more about how reproductive physiology changes with various therapeutic, biological (i.e. age) and environmental conditions, the CRC is becoming better positioned to make informed choices that will benefit the aquaculture industry in Australia.

The purpose of the research was to determine whether the endocrine profiles of plasma follicle stimulating hormone (FSH) and luteinizing hormone (LH) changed as a result of thermal exposure, broodstock age or hormonal treatment in farmed female Atlantic Salmon. FSH promotes the production of testosterone, oestrogen and oocyte (egg) growth while LH controls oocyte maturation and ovulation. There is some evidence to suggest that fish reared at 22 °C (equivalent of a warm Tasmanian summer) have higher levels of circulating FSH compared to fish reared at 14 °C (ideal temperature) and this is probably due to abnormal oestrogen levels (and therefore feedback mechanisms) in fish reared at high temperature.

An in vitro experiment was performed in Seattle that investigated the affect of elevated temperature and hormonal treatment on the expression levels of genes involved in testosterone production in ovarian fragments isolated from Coho Salmon. For the first time, it was shown that the relative expression of several genes involved in testosterone production was impaired by increased temperature in vitro. From this trial, a suite of candidate genes that may contribute to low T levels and therefore reproductive performance in Atlantic Salmon reared at 22 °C have been identified.

These results combined with previous work demonstrate that dysfunction at multiple levels in the endocrine cascade controlling reproductive development in thermally challenged female Atlantic Salmon is likely. This work also shows that formulating management strategies that improve reproductive performance in Atlantic Salmon reared at elevated temperature is no easy feat. However, as the CRC are learning more about how reproductive physiology changes with various therapeutic, biological (i.e. age) and environmental conditions, the CRC is becoming better positioned to make informed choices that will benefit the aquaculture industry in Australia.

The purpose of the research was to determine whether the endocrine profiles of plasma follicle stimulating hormone (FSH) and luteinizing hormone (LH) changed as a result of thermal exposure, broodstock age or hormonal treatment in farmed female Atlantic Salmon. FSH promotes the production of testosterone, oestrogen and oocyte (egg) growth while LH controls oocyte maturation and ovulation. There is some evidence to suggest that fish reared at 22 °C (equivalent of a warm Tasmanian summer) have higher levels of circulating FSH compared to fish reared at 14 °C (ideal temperature) and this is probably due to abnormal oestrogen levels (and therefore feedback mechanisms) in fish reared at high temperature.

An in vitro experiment was performed in Seattle that investigated the affect of elevated temperature and hormonal treatment on the expression levels of genes involved in testosterone production in ovarian fragments isolated from Coho Salmon. For the first time, it was shown that the relative expression of several genes involved in testosterone production was impaired by increased temperature in vitro. From this trial, a suite of candidate genes that may contribute to low T levels and therefore reproductive performance in Atlantic Salmon reared at 22 °C have been identified.

These results combined with previous work demonstrate that dysfunction at multiple levels in the endocrine cascade controlling reproductive development in thermally challenged female Atlantic Salmon is likely. This work also shows that formulating management strategies that improve reproductive performance in Atlantic Salmon reared at elevated temperature is no easy feat. However, as the CRC are learning more about how reproductive physiology changes with various therapeutic, biological (i.e. age) and environmental conditions, the CRC is becoming better positioned to make informed choices that will benefit the aquaculture industry in Australia.

The purpose of the research was to determine whether the endocrine profiles of plasma follicle stimulating hormone (FSH) and luteinizing hormone (LH) changed as a result of thermal exposure, broodstock age or hormonal treatment in farmed female Atlantic Salmon. FSH promotes the production of testosterone, oestrogen and oocyte (egg) growth while LH controls oocyte maturation and ovulation. There is some evidence to suggest that fish reared at 22 °C (equivalent of a warm Tasmanian summer) have higher levels of circulating FSH compared to fish reared at 14 °C (ideal temperature) and this is probably due to abnormal oestrogen levels (and therefore feedback mechanisms) in fish reared at high temperature.

An in vitro experiment was performed in Seattle that investigated the affect of elevated temperature and hormonal treatment on the expression levels of genes involved in testosterone production in ovarian fragments isolated from Coho Salmon. For the first time, it was shown that the relative expression of several genes involved in testosterone production was impaired by increased temperature in vitro. From this trial, a suite of candidate genes that may contribute to low T levels and therefore reproductive performance in Atlantic Salmon reared at 22 °C have been identified.

These results combined with previous work demonstrate that dysfunction at multiple levels in the endocrine cascade controlling reproductive development in thermally challenged female Atlantic Salmon is likely. This work also shows that formulating management strategies that improve reproductive performance in Atlantic Salmon reared at elevated temperature is no easy feat. However, as the CRC are learning more about how reproductive physiology changes with various therapeutic, biological (i.e. age) and environmental conditions, the CRC is becoming better positioned to make informed choices that will benefit the aquaculture industry in Australia.

The purpose of the research was to determine whether the endocrine profiles of plasma follicle stimulating hormone (FSH) and luteinizing hormone (LH) changed as a result of thermal exposure, broodstock age or hormonal treatment in farmed female Atlantic Salmon. FSH promotes the production of testosterone, oestrogen and oocyte (egg) growth while LH controls oocyte maturation and ovulation. There is some evidence to suggest that fish reared at 22 °C (equivalent of a warm Tasmanian summer) have higher levels of circulating FSH compared to fish reared at 14 °C (ideal temperature) and this is probably due to abnormal oestrogen levels (and therefore feedback mechanisms) in fish reared at high temperature.

An in vitro experiment was performed in Seattle that investigated the affect of elevated temperature and hormonal treatment on the expression levels of genes involved in testosterone production in ovarian fragments isolated from Coho Salmon. For the first time, it was shown that the relative expression of several genes involved in testosterone production was impaired by increased temperature in vitro. From this trial, a suite of candidate genes that may contribute to low T levels and therefore reproductive performance in Atlantic Salmon reared at 22 °C have been identified.

These results combined with previous work demonstrate that dysfunction at multiple levels in the endocrine cascade controlling reproductive development in thermally challenged female Atlantic Salmon is likely. This work also shows that formulating management strategies that improve reproductive performance in Atlantic Salmon reared at elevated temperature is no easy feat. However, as the CRC are learning more about how reproductive physiology changes with various therapeutic, biological (i.e. age) and environmental conditions, the CRC is becoming better positioned to make informed choices that will benefit the aquaculture industry in Australia.

The purpose of the research was to determine whether the endocrine profiles of plasma follicle stimulating hormone (FSH) and luteinizing hormone (LH) changed as a result of thermal exposure, broodstock age or hormonal treatment in farmed female Atlantic Salmon. FSH promotes the production of testosterone, oestrogen and oocyte (egg) growth while LH controls oocyte maturation and ovulation. There is some evidence to suggest that fish reared at 22 °C (equivalent of a warm Tasmanian summer) have higher levels of circulating FSH compared to fish reared at 14 °C (ideal temperature) and this is probably due to abnormal oestrogen levels (and therefore feedback mechanisms) in fish reared at high temperature.

An in vitro experiment was performed in Seattle that investigated the affect of elevated temperature and hormonal treatment on the expression levels of genes involved in testosterone production in ovarian fragments isolated from Coho Salmon. For the first time, it was shown that the relative expression of several genes involved in testosterone production was impaired by increased temperature in vitro. From this trial, a suite of candidate genes that may contribute to low T levels and therefore reproductive performance in Atlantic Salmon reared at 22 °C have been identified.

These results combined with previous work demonstrate that dysfunction at multiple levels in the endocrine cascade controlling reproductive development in thermally challenged female Atlantic Salmon is likely. This work also shows that formulating management strategies that improve reproductive performance in Atlantic Salmon reared at elevated temperature is no easy feat. However, as the CRC are learning more about how reproductive physiology changes with various therapeutic, biological (i.e. age) and environmental conditions, the CRC is becoming better positioned to make informed choices that will benefit the aquaculture industry in Australia.

The purpose of the research was to determine whether the endocrine profiles of plasma follicle stimulating hormone (FSH) and luteinizing hormone (LH) changed as a result of thermal exposure, broodstock age or hormonal treatment in farmed female Atlantic Salmon. FSH promotes the production of testosterone, oestrogen and oocyte (egg) growth while LH controls oocyte maturation and ovulation. There is some evidence to suggest that fish reared at 22 °C (equivalent of a warm Tasmanian summer) have higher levels of circulating FSH compared to fish reared at 14 °C (ideal temperature) and this is probably due to abnormal oestrogen levels (and therefore feedback mechanisms) in fish reared at high temperature.

An in vitro experiment was performed in Seattle that investigated the affect of elevated temperature and hormonal treatment on the expression levels of genes involved in testosterone production in ovarian fragments isolated from Coho Salmon. For the first time, it was shown that the relative expression of several genes involved in testosterone production was impaired by increased temperature in vitro. From this trial, a suite of candidate genes that may contribute to low T levels and therefore reproductive performance in Atlantic Salmon reared at 22 °C have been identified.

These results combined with previous work demonstrate that dysfunction at multiple levels in the endocrine cascade controlling reproductive development in thermally challenged female Atlantic Salmon is likely. This work also shows that formulating management strategies that improve reproductive performance in Atlantic Salmon reared at elevated temperature is no easy feat. However, as the CRC are learning more about how reproductive physiology changes with various therapeutic, biological (i.e. age) and environmental conditions, the CRC is becoming better positioned to make informed choices that will benefit the aquaculture industry in Australia.