263 results
Environment
PROJECT NUMBER • 1999-201
PROJECT STATUS:
COMPLETED

Aquafin CRC - Atlantic Salmon Aquaculture Subprogram: development of selective enrichment culture-polymerase chain reaction (SEC-PCR) for the detection of bacterial pathogens in covertly infected farmed salmonid fish

Bacterial disease is a major cause of stock loss in aquaculture. The severity of infection may range from acute to chronic through to benign. This latter condition, termed covert infection, is insidious, as fish may appear to be outwardly healthy but during periods of stress, these carriers may...
ORGANISATION:
University of Tasmania (UTAS)
Environment
PROJECT NUMBER • 1999-164
PROJECT STATUS:
COMPLETED

Application of molecular genetics to the Australian abalone fisheries: forensic protocols for species identification and blacklip stock structure

Of the nineteen abalone (Haliotidae) species recognised in Australian waters (Geiger 1999), ten are endemic and two dominate the commercial, recreational and illegal harvests in southern States: the blacklip abalone Haliotis rubra Leach and the greenlip abalone H. laevigata Donovan. A third species,...
ORGANISATION:
University of Tasmania (UTAS)
Industry
PROJECT NUMBER • 1999-162
PROJECT STATUS:
COMPLETED

Evaluating the effectiveness of marine protected areas as a fisheries management tool

Marine Protected Areas (MPAs) are being proclaimed around the world with the stated primary purposes of enhancing fisheries stocks and/or conserving marine biodiversity. In Australia, in response to a joint State/Commonwealth agreement to establish a National Representative System of MPAs (NRSMPA)...
ORGANISATION:
University of Tasmania (UTAS)

Workshop on post settlement processes affecting the southern rock lobster (Jasus edwardsii) in southern Australia

Project number: 1998-362
Project Status:
Completed
Budget expenditure: $13,605.00
Principal Investigator: Stewart Frusher
Organisation: University of Tasmania (UTAS)
Project start/end date: 10 Jan 1999 - 30 Jun 2000
Contact:
FRDC

Objectives

1. To identify the current 'status of knowledge' in post-settlement spiny lobster research, including technological advances, which will be useful in study post-settlement process in southern rock lobster.
2. To bring together key industry, government and research partners to discuss a collaborative research plan aimed at investigating post settlement processes in southern rock lobster.
3. To foster international links in this field of research.

Final report

ISBN: 0-7246-4712-0
Author: Stewart Frusher
Final Report • 2000-06-26 • 521.60 KB
1998-362-DLD.pdf

Summary

Research into the southern rock lobster in Australia has concentrated on the catching sector (primarily commercial) with limited research being undertaken on the post-settlement and juvenile stages.  To maximise the outputs of investigating these stages, while at the same time minimising costs, a comprehensive understanding of the latest developments in the field is necessary. It was considered that this was best served by holding a workshop to review existing research, facilitate discussion amongst those involved in the area of research, and plan future research in relation to southern rock lobster. 

Key issues for the workshop were considered to be: (1) the relevance of juvenile research to catch prediction; (2) growth information for stock assessment modelling; (3) impact and management of puerulus extraction for aquaculture; and (4) contribution to broader management in relation to conservation of egg production vs perceptions of stability of recruitment due to density dependent mortality.

Participants at the workshop reviewed the current status of knowledge in post-settlement rock lobster research, including methods used to research these cryptic stages.  Participants included key industry, government and research partners and their discussions resulted in a collaborative research plan aimed at investigating post-settlement processes.  Key areas were documenting macro-habitat requirements, growth rates, mortality estimates of juveniles and puerulus, identifying predators and competitors.  The over-riding goal was considered to be the identification of
“bottlenecks”. 

"Bottlenecks" are phases during development where a factor affecting abundance decouples the link between the abundance of a size class for that proceeding it. For instance, shelter limitation for a particular size class is a bottleneck as this would result in reduced inter-annual variation in the abundance of larger animals. The research proposed from this workshop would evaluate bottlenecks by identifying the stages and factors during juvenile development where density dependent mortality influences abundance. These factors reduce the signal between puerulus abundance indices to fishery recruitment and are important in understanding the effect of puerulus removal or habitat changes.

International participation at the workshop (from NZ, Japan & USA) was helpful in fostering links in this field of research.

Keywords: Southern rock lobster, resource sustainability, recruitment, aquaculture, mortality, density dependence.

Final Report • 2000-06-26 • 521.60 KB
1998-362-DLD.pdf

Summary

Research into the southern rock lobster in Australia has concentrated on the catching sector (primarily commercial) with limited research being undertaken on the post-settlement and juvenile stages.  To maximise the outputs of investigating these stages, while at the same time minimising costs, a comprehensive understanding of the latest developments in the field is necessary. It was considered that this was best served by holding a workshop to review existing research, facilitate discussion amongst those involved in the area of research, and plan future research in relation to southern rock lobster. 

Key issues for the workshop were considered to be: (1) the relevance of juvenile research to catch prediction; (2) growth information for stock assessment modelling; (3) impact and management of puerulus extraction for aquaculture; and (4) contribution to broader management in relation to conservation of egg production vs perceptions of stability of recruitment due to density dependent mortality.

Participants at the workshop reviewed the current status of knowledge in post-settlement rock lobster research, including methods used to research these cryptic stages.  Participants included key industry, government and research partners and their discussions resulted in a collaborative research plan aimed at investigating post-settlement processes.  Key areas were documenting macro-habitat requirements, growth rates, mortality estimates of juveniles and puerulus, identifying predators and competitors.  The over-riding goal was considered to be the identification of
“bottlenecks”. 

"Bottlenecks" are phases during development where a factor affecting abundance decouples the link between the abundance of a size class for that proceeding it. For instance, shelter limitation for a particular size class is a bottleneck as this would result in reduced inter-annual variation in the abundance of larger animals. The research proposed from this workshop would evaluate bottlenecks by identifying the stages and factors during juvenile development where density dependent mortality influences abundance. These factors reduce the signal between puerulus abundance indices to fishery recruitment and are important in understanding the effect of puerulus removal or habitat changes.

International participation at the workshop (from NZ, Japan & USA) was helpful in fostering links in this field of research.

Keywords: Southern rock lobster, resource sustainability, recruitment, aquaculture, mortality, density dependence.

Final Report • 2000-06-26 • 521.60 KB
1998-362-DLD.pdf

Summary

Research into the southern rock lobster in Australia has concentrated on the catching sector (primarily commercial) with limited research being undertaken on the post-settlement and juvenile stages.  To maximise the outputs of investigating these stages, while at the same time minimising costs, a comprehensive understanding of the latest developments in the field is necessary. It was considered that this was best served by holding a workshop to review existing research, facilitate discussion amongst those involved in the area of research, and plan future research in relation to southern rock lobster. 

Key issues for the workshop were considered to be: (1) the relevance of juvenile research to catch prediction; (2) growth information for stock assessment modelling; (3) impact and management of puerulus extraction for aquaculture; and (4) contribution to broader management in relation to conservation of egg production vs perceptions of stability of recruitment due to density dependent mortality.

Participants at the workshop reviewed the current status of knowledge in post-settlement rock lobster research, including methods used to research these cryptic stages.  Participants included key industry, government and research partners and their discussions resulted in a collaborative research plan aimed at investigating post-settlement processes.  Key areas were documenting macro-habitat requirements, growth rates, mortality estimates of juveniles and puerulus, identifying predators and competitors.  The over-riding goal was considered to be the identification of
“bottlenecks”. 

"Bottlenecks" are phases during development where a factor affecting abundance decouples the link between the abundance of a size class for that proceeding it. For instance, shelter limitation for a particular size class is a bottleneck as this would result in reduced inter-annual variation in the abundance of larger animals. The research proposed from this workshop would evaluate bottlenecks by identifying the stages and factors during juvenile development where density dependent mortality influences abundance. These factors reduce the signal between puerulus abundance indices to fishery recruitment and are important in understanding the effect of puerulus removal or habitat changes.

International participation at the workshop (from NZ, Japan & USA) was helpful in fostering links in this field of research.

Keywords: Southern rock lobster, resource sustainability, recruitment, aquaculture, mortality, density dependence.

Final Report • 2000-06-26 • 521.60 KB
1998-362-DLD.pdf

Summary

Research into the southern rock lobster in Australia has concentrated on the catching sector (primarily commercial) with limited research being undertaken on the post-settlement and juvenile stages.  To maximise the outputs of investigating these stages, while at the same time minimising costs, a comprehensive understanding of the latest developments in the field is necessary. It was considered that this was best served by holding a workshop to review existing research, facilitate discussion amongst those involved in the area of research, and plan future research in relation to southern rock lobster. 

Key issues for the workshop were considered to be: (1) the relevance of juvenile research to catch prediction; (2) growth information for stock assessment modelling; (3) impact and management of puerulus extraction for aquaculture; and (4) contribution to broader management in relation to conservation of egg production vs perceptions of stability of recruitment due to density dependent mortality.

Participants at the workshop reviewed the current status of knowledge in post-settlement rock lobster research, including methods used to research these cryptic stages.  Participants included key industry, government and research partners and their discussions resulted in a collaborative research plan aimed at investigating post-settlement processes.  Key areas were documenting macro-habitat requirements, growth rates, mortality estimates of juveniles and puerulus, identifying predators and competitors.  The over-riding goal was considered to be the identification of
“bottlenecks”. 

"Bottlenecks" are phases during development where a factor affecting abundance decouples the link between the abundance of a size class for that proceeding it. For instance, shelter limitation for a particular size class is a bottleneck as this would result in reduced inter-annual variation in the abundance of larger animals. The research proposed from this workshop would evaluate bottlenecks by identifying the stages and factors during juvenile development where density dependent mortality influences abundance. These factors reduce the signal between puerulus abundance indices to fishery recruitment and are important in understanding the effect of puerulus removal or habitat changes.

International participation at the workshop (from NZ, Japan & USA) was helpful in fostering links in this field of research.

Keywords: Southern rock lobster, resource sustainability, recruitment, aquaculture, mortality, density dependence.

Final Report • 2000-06-26 • 521.60 KB
1998-362-DLD.pdf

Summary

Research into the southern rock lobster in Australia has concentrated on the catching sector (primarily commercial) with limited research being undertaken on the post-settlement and juvenile stages.  To maximise the outputs of investigating these stages, while at the same time minimising costs, a comprehensive understanding of the latest developments in the field is necessary. It was considered that this was best served by holding a workshop to review existing research, facilitate discussion amongst those involved in the area of research, and plan future research in relation to southern rock lobster. 

Key issues for the workshop were considered to be: (1) the relevance of juvenile research to catch prediction; (2) growth information for stock assessment modelling; (3) impact and management of puerulus extraction for aquaculture; and (4) contribution to broader management in relation to conservation of egg production vs perceptions of stability of recruitment due to density dependent mortality.

Participants at the workshop reviewed the current status of knowledge in post-settlement rock lobster research, including methods used to research these cryptic stages.  Participants included key industry, government and research partners and their discussions resulted in a collaborative research plan aimed at investigating post-settlement processes.  Key areas were documenting macro-habitat requirements, growth rates, mortality estimates of juveniles and puerulus, identifying predators and competitors.  The over-riding goal was considered to be the identification of
“bottlenecks”. 

"Bottlenecks" are phases during development where a factor affecting abundance decouples the link between the abundance of a size class for that proceeding it. For instance, shelter limitation for a particular size class is a bottleneck as this would result in reduced inter-annual variation in the abundance of larger animals. The research proposed from this workshop would evaluate bottlenecks by identifying the stages and factors during juvenile development where density dependent mortality influences abundance. These factors reduce the signal between puerulus abundance indices to fishery recruitment and are important in understanding the effect of puerulus removal or habitat changes.

International participation at the workshop (from NZ, Japan & USA) was helpful in fostering links in this field of research.

Keywords: Southern rock lobster, resource sustainability, recruitment, aquaculture, mortality, density dependence.

Final Report • 2000-06-26 • 521.60 KB
1998-362-DLD.pdf

Summary

Research into the southern rock lobster in Australia has concentrated on the catching sector (primarily commercial) with limited research being undertaken on the post-settlement and juvenile stages.  To maximise the outputs of investigating these stages, while at the same time minimising costs, a comprehensive understanding of the latest developments in the field is necessary. It was considered that this was best served by holding a workshop to review existing research, facilitate discussion amongst those involved in the area of research, and plan future research in relation to southern rock lobster. 

Key issues for the workshop were considered to be: (1) the relevance of juvenile research to catch prediction; (2) growth information for stock assessment modelling; (3) impact and management of puerulus extraction for aquaculture; and (4) contribution to broader management in relation to conservation of egg production vs perceptions of stability of recruitment due to density dependent mortality.

Participants at the workshop reviewed the current status of knowledge in post-settlement rock lobster research, including methods used to research these cryptic stages.  Participants included key industry, government and research partners and their discussions resulted in a collaborative research plan aimed at investigating post-settlement processes.  Key areas were documenting macro-habitat requirements, growth rates, mortality estimates of juveniles and puerulus, identifying predators and competitors.  The over-riding goal was considered to be the identification of
“bottlenecks”. 

"Bottlenecks" are phases during development where a factor affecting abundance decouples the link between the abundance of a size class for that proceeding it. For instance, shelter limitation for a particular size class is a bottleneck as this would result in reduced inter-annual variation in the abundance of larger animals. The research proposed from this workshop would evaluate bottlenecks by identifying the stages and factors during juvenile development where density dependent mortality influences abundance. These factors reduce the signal between puerulus abundance indices to fishery recruitment and are important in understanding the effect of puerulus removal or habitat changes.

International participation at the workshop (from NZ, Japan & USA) was helpful in fostering links in this field of research.

Keywords: Southern rock lobster, resource sustainability, recruitment, aquaculture, mortality, density dependence.

Final Report • 2000-06-26 • 521.60 KB
1998-362-DLD.pdf

Summary

Research into the southern rock lobster in Australia has concentrated on the catching sector (primarily commercial) with limited research being undertaken on the post-settlement and juvenile stages.  To maximise the outputs of investigating these stages, while at the same time minimising costs, a comprehensive understanding of the latest developments in the field is necessary. It was considered that this was best served by holding a workshop to review existing research, facilitate discussion amongst those involved in the area of research, and plan future research in relation to southern rock lobster. 

Key issues for the workshop were considered to be: (1) the relevance of juvenile research to catch prediction; (2) growth information for stock assessment modelling; (3) impact and management of puerulus extraction for aquaculture; and (4) contribution to broader management in relation to conservation of egg production vs perceptions of stability of recruitment due to density dependent mortality.

Participants at the workshop reviewed the current status of knowledge in post-settlement rock lobster research, including methods used to research these cryptic stages.  Participants included key industry, government and research partners and their discussions resulted in a collaborative research plan aimed at investigating post-settlement processes.  Key areas were documenting macro-habitat requirements, growth rates, mortality estimates of juveniles and puerulus, identifying predators and competitors.  The over-riding goal was considered to be the identification of
“bottlenecks”. 

"Bottlenecks" are phases during development where a factor affecting abundance decouples the link between the abundance of a size class for that proceeding it. For instance, shelter limitation for a particular size class is a bottleneck as this would result in reduced inter-annual variation in the abundance of larger animals. The research proposed from this workshop would evaluate bottlenecks by identifying the stages and factors during juvenile development where density dependent mortality influences abundance. These factors reduce the signal between puerulus abundance indices to fishery recruitment and are important in understanding the effect of puerulus removal or habitat changes.

International participation at the workshop (from NZ, Japan & USA) was helpful in fostering links in this field of research.

Keywords: Southern rock lobster, resource sustainability, recruitment, aquaculture, mortality, density dependence.

Final Report • 2000-06-26 • 521.60 KB
1998-362-DLD.pdf

Summary

Research into the southern rock lobster in Australia has concentrated on the catching sector (primarily commercial) with limited research being undertaken on the post-settlement and juvenile stages.  To maximise the outputs of investigating these stages, while at the same time minimising costs, a comprehensive understanding of the latest developments in the field is necessary. It was considered that this was best served by holding a workshop to review existing research, facilitate discussion amongst those involved in the area of research, and plan future research in relation to southern rock lobster. 

Key issues for the workshop were considered to be: (1) the relevance of juvenile research to catch prediction; (2) growth information for stock assessment modelling; (3) impact and management of puerulus extraction for aquaculture; and (4) contribution to broader management in relation to conservation of egg production vs perceptions of stability of recruitment due to density dependent mortality.

Participants at the workshop reviewed the current status of knowledge in post-settlement rock lobster research, including methods used to research these cryptic stages.  Participants included key industry, government and research partners and their discussions resulted in a collaborative research plan aimed at investigating post-settlement processes.  Key areas were documenting macro-habitat requirements, growth rates, mortality estimates of juveniles and puerulus, identifying predators and competitors.  The over-riding goal was considered to be the identification of
“bottlenecks”. 

"Bottlenecks" are phases during development where a factor affecting abundance decouples the link between the abundance of a size class for that proceeding it. For instance, shelter limitation for a particular size class is a bottleneck as this would result in reduced inter-annual variation in the abundance of larger animals. The research proposed from this workshop would evaluate bottlenecks by identifying the stages and factors during juvenile development where density dependent mortality influences abundance. These factors reduce the signal between puerulus abundance indices to fishery recruitment and are important in understanding the effect of puerulus removal or habitat changes.

International participation at the workshop (from NZ, Japan & USA) was helpful in fostering links in this field of research.

Keywords: Southern rock lobster, resource sustainability, recruitment, aquaculture, mortality, density dependence.

Final Report • 2000-06-26 • 521.60 KB
1998-362-DLD.pdf

Summary

Research into the southern rock lobster in Australia has concentrated on the catching sector (primarily commercial) with limited research being undertaken on the post-settlement and juvenile stages.  To maximise the outputs of investigating these stages, while at the same time minimising costs, a comprehensive understanding of the latest developments in the field is necessary. It was considered that this was best served by holding a workshop to review existing research, facilitate discussion amongst those involved in the area of research, and plan future research in relation to southern rock lobster. 

Key issues for the workshop were considered to be: (1) the relevance of juvenile research to catch prediction; (2) growth information for stock assessment modelling; (3) impact and management of puerulus extraction for aquaculture; and (4) contribution to broader management in relation to conservation of egg production vs perceptions of stability of recruitment due to density dependent mortality.

Participants at the workshop reviewed the current status of knowledge in post-settlement rock lobster research, including methods used to research these cryptic stages.  Participants included key industry, government and research partners and their discussions resulted in a collaborative research plan aimed at investigating post-settlement processes.  Key areas were documenting macro-habitat requirements, growth rates, mortality estimates of juveniles and puerulus, identifying predators and competitors.  The over-riding goal was considered to be the identification of
“bottlenecks”. 

"Bottlenecks" are phases during development where a factor affecting abundance decouples the link between the abundance of a size class for that proceeding it. For instance, shelter limitation for a particular size class is a bottleneck as this would result in reduced inter-annual variation in the abundance of larger animals. The research proposed from this workshop would evaluate bottlenecks by identifying the stages and factors during juvenile development where density dependent mortality influences abundance. These factors reduce the signal between puerulus abundance indices to fishery recruitment and are important in understanding the effect of puerulus removal or habitat changes.

International participation at the workshop (from NZ, Japan & USA) was helpful in fostering links in this field of research.

Keywords: Southern rock lobster, resource sustainability, recruitment, aquaculture, mortality, density dependence.

Final Report • 2000-06-26 • 521.60 KB
1998-362-DLD.pdf

Summary

Research into the southern rock lobster in Australia has concentrated on the catching sector (primarily commercial) with limited research being undertaken on the post-settlement and juvenile stages.  To maximise the outputs of investigating these stages, while at the same time minimising costs, a comprehensive understanding of the latest developments in the field is necessary. It was considered that this was best served by holding a workshop to review existing research, facilitate discussion amongst those involved in the area of research, and plan future research in relation to southern rock lobster. 

Key issues for the workshop were considered to be: (1) the relevance of juvenile research to catch prediction; (2) growth information for stock assessment modelling; (3) impact and management of puerulus extraction for aquaculture; and (4) contribution to broader management in relation to conservation of egg production vs perceptions of stability of recruitment due to density dependent mortality.

Participants at the workshop reviewed the current status of knowledge in post-settlement rock lobster research, including methods used to research these cryptic stages.  Participants included key industry, government and research partners and their discussions resulted in a collaborative research plan aimed at investigating post-settlement processes.  Key areas were documenting macro-habitat requirements, growth rates, mortality estimates of juveniles and puerulus, identifying predators and competitors.  The over-riding goal was considered to be the identification of
“bottlenecks”. 

"Bottlenecks" are phases during development where a factor affecting abundance decouples the link between the abundance of a size class for that proceeding it. For instance, shelter limitation for a particular size class is a bottleneck as this would result in reduced inter-annual variation in the abundance of larger animals. The research proposed from this workshop would evaluate bottlenecks by identifying the stages and factors during juvenile development where density dependent mortality influences abundance. These factors reduce the signal between puerulus abundance indices to fishery recruitment and are important in understanding the effect of puerulus removal or habitat changes.

International participation at the workshop (from NZ, Japan & USA) was helpful in fostering links in this field of research.

Keywords: Southern rock lobster, resource sustainability, recruitment, aquaculture, mortality, density dependence.

Final Report • 2000-06-26 • 521.60 KB
1998-362-DLD.pdf

Summary

Research into the southern rock lobster in Australia has concentrated on the catching sector (primarily commercial) with limited research being undertaken on the post-settlement and juvenile stages.  To maximise the outputs of investigating these stages, while at the same time minimising costs, a comprehensive understanding of the latest developments in the field is necessary. It was considered that this was best served by holding a workshop to review existing research, facilitate discussion amongst those involved in the area of research, and plan future research in relation to southern rock lobster. 

Key issues for the workshop were considered to be: (1) the relevance of juvenile research to catch prediction; (2) growth information for stock assessment modelling; (3) impact and management of puerulus extraction for aquaculture; and (4) contribution to broader management in relation to conservation of egg production vs perceptions of stability of recruitment due to density dependent mortality.

Participants at the workshop reviewed the current status of knowledge in post-settlement rock lobster research, including methods used to research these cryptic stages.  Participants included key industry, government and research partners and their discussions resulted in a collaborative research plan aimed at investigating post-settlement processes.  Key areas were documenting macro-habitat requirements, growth rates, mortality estimates of juveniles and puerulus, identifying predators and competitors.  The over-riding goal was considered to be the identification of
“bottlenecks”. 

"Bottlenecks" are phases during development where a factor affecting abundance decouples the link between the abundance of a size class for that proceeding it. For instance, shelter limitation for a particular size class is a bottleneck as this would result in reduced inter-annual variation in the abundance of larger animals. The research proposed from this workshop would evaluate bottlenecks by identifying the stages and factors during juvenile development where density dependent mortality influences abundance. These factors reduce the signal between puerulus abundance indices to fishery recruitment and are important in understanding the effect of puerulus removal or habitat changes.

International participation at the workshop (from NZ, Japan & USA) was helpful in fostering links in this field of research.

Keywords: Southern rock lobster, resource sustainability, recruitment, aquaculture, mortality, density dependence.

Final Report • 2000-06-26 • 521.60 KB
1998-362-DLD.pdf

Summary

Research into the southern rock lobster in Australia has concentrated on the catching sector (primarily commercial) with limited research being undertaken on the post-settlement and juvenile stages.  To maximise the outputs of investigating these stages, while at the same time minimising costs, a comprehensive understanding of the latest developments in the field is necessary. It was considered that this was best served by holding a workshop to review existing research, facilitate discussion amongst those involved in the area of research, and plan future research in relation to southern rock lobster. 

Key issues for the workshop were considered to be: (1) the relevance of juvenile research to catch prediction; (2) growth information for stock assessment modelling; (3) impact and management of puerulus extraction for aquaculture; and (4) contribution to broader management in relation to conservation of egg production vs perceptions of stability of recruitment due to density dependent mortality.

Participants at the workshop reviewed the current status of knowledge in post-settlement rock lobster research, including methods used to research these cryptic stages.  Participants included key industry, government and research partners and their discussions resulted in a collaborative research plan aimed at investigating post-settlement processes.  Key areas were documenting macro-habitat requirements, growth rates, mortality estimates of juveniles and puerulus, identifying predators and competitors.  The over-riding goal was considered to be the identification of
“bottlenecks”. 

"Bottlenecks" are phases during development where a factor affecting abundance decouples the link between the abundance of a size class for that proceeding it. For instance, shelter limitation for a particular size class is a bottleneck as this would result in reduced inter-annual variation in the abundance of larger animals. The research proposed from this workshop would evaluate bottlenecks by identifying the stages and factors during juvenile development where density dependent mortality influences abundance. These factors reduce the signal between puerulus abundance indices to fishery recruitment and are important in understanding the effect of puerulus removal or habitat changes.

International participation at the workshop (from NZ, Japan & USA) was helpful in fostering links in this field of research.

Keywords: Southern rock lobster, resource sustainability, recruitment, aquaculture, mortality, density dependence.

Final Report • 2000-06-26 • 521.60 KB
1998-362-DLD.pdf

Summary

Research into the southern rock lobster in Australia has concentrated on the catching sector (primarily commercial) with limited research being undertaken on the post-settlement and juvenile stages.  To maximise the outputs of investigating these stages, while at the same time minimising costs, a comprehensive understanding of the latest developments in the field is necessary. It was considered that this was best served by holding a workshop to review existing research, facilitate discussion amongst those involved in the area of research, and plan future research in relation to southern rock lobster. 

Key issues for the workshop were considered to be: (1) the relevance of juvenile research to catch prediction; (2) growth information for stock assessment modelling; (3) impact and management of puerulus extraction for aquaculture; and (4) contribution to broader management in relation to conservation of egg production vs perceptions of stability of recruitment due to density dependent mortality.

Participants at the workshop reviewed the current status of knowledge in post-settlement rock lobster research, including methods used to research these cryptic stages.  Participants included key industry, government and research partners and their discussions resulted in a collaborative research plan aimed at investigating post-settlement processes.  Key areas were documenting macro-habitat requirements, growth rates, mortality estimates of juveniles and puerulus, identifying predators and competitors.  The over-riding goal was considered to be the identification of
“bottlenecks”. 

"Bottlenecks" are phases during development where a factor affecting abundance decouples the link between the abundance of a size class for that proceeding it. For instance, shelter limitation for a particular size class is a bottleneck as this would result in reduced inter-annual variation in the abundance of larger animals. The research proposed from this workshop would evaluate bottlenecks by identifying the stages and factors during juvenile development where density dependent mortality influences abundance. These factors reduce the signal between puerulus abundance indices to fishery recruitment and are important in understanding the effect of puerulus removal or habitat changes.

International participation at the workshop (from NZ, Japan & USA) was helpful in fostering links in this field of research.

Keywords: Southern rock lobster, resource sustainability, recruitment, aquaculture, mortality, density dependence.

Final Report • 2000-06-26 • 521.60 KB
1998-362-DLD.pdf

Summary

Research into the southern rock lobster in Australia has concentrated on the catching sector (primarily commercial) with limited research being undertaken on the post-settlement and juvenile stages.  To maximise the outputs of investigating these stages, while at the same time minimising costs, a comprehensive understanding of the latest developments in the field is necessary. It was considered that this was best served by holding a workshop to review existing research, facilitate discussion amongst those involved in the area of research, and plan future research in relation to southern rock lobster. 

Key issues for the workshop were considered to be: (1) the relevance of juvenile research to catch prediction; (2) growth information for stock assessment modelling; (3) impact and management of puerulus extraction for aquaculture; and (4) contribution to broader management in relation to conservation of egg production vs perceptions of stability of recruitment due to density dependent mortality.

Participants at the workshop reviewed the current status of knowledge in post-settlement rock lobster research, including methods used to research these cryptic stages.  Participants included key industry, government and research partners and their discussions resulted in a collaborative research plan aimed at investigating post-settlement processes.  Key areas were documenting macro-habitat requirements, growth rates, mortality estimates of juveniles and puerulus, identifying predators and competitors.  The over-riding goal was considered to be the identification of
“bottlenecks”. 

"Bottlenecks" are phases during development where a factor affecting abundance decouples the link between the abundance of a size class for that proceeding it. For instance, shelter limitation for a particular size class is a bottleneck as this would result in reduced inter-annual variation in the abundance of larger animals. The research proposed from this workshop would evaluate bottlenecks by identifying the stages and factors during juvenile development where density dependent mortality influences abundance. These factors reduce the signal between puerulus abundance indices to fishery recruitment and are important in understanding the effect of puerulus removal or habitat changes.

International participation at the workshop (from NZ, Japan & USA) was helpful in fostering links in this field of research.

Keywords: Southern rock lobster, resource sustainability, recruitment, aquaculture, mortality, density dependence.

Final Report • 2000-06-26 • 521.60 KB
1998-362-DLD.pdf

Summary

Research into the southern rock lobster in Australia has concentrated on the catching sector (primarily commercial) with limited research being undertaken on the post-settlement and juvenile stages.  To maximise the outputs of investigating these stages, while at the same time minimising costs, a comprehensive understanding of the latest developments in the field is necessary. It was considered that this was best served by holding a workshop to review existing research, facilitate discussion amongst those involved in the area of research, and plan future research in relation to southern rock lobster. 

Key issues for the workshop were considered to be: (1) the relevance of juvenile research to catch prediction; (2) growth information for stock assessment modelling; (3) impact and management of puerulus extraction for aquaculture; and (4) contribution to broader management in relation to conservation of egg production vs perceptions of stability of recruitment due to density dependent mortality.

Participants at the workshop reviewed the current status of knowledge in post-settlement rock lobster research, including methods used to research these cryptic stages.  Participants included key industry, government and research partners and their discussions resulted in a collaborative research plan aimed at investigating post-settlement processes.  Key areas were documenting macro-habitat requirements, growth rates, mortality estimates of juveniles and puerulus, identifying predators and competitors.  The over-riding goal was considered to be the identification of
“bottlenecks”. 

"Bottlenecks" are phases during development where a factor affecting abundance decouples the link between the abundance of a size class for that proceeding it. For instance, shelter limitation for a particular size class is a bottleneck as this would result in reduced inter-annual variation in the abundance of larger animals. The research proposed from this workshop would evaluate bottlenecks by identifying the stages and factors during juvenile development where density dependent mortality influences abundance. These factors reduce the signal between puerulus abundance indices to fishery recruitment and are important in understanding the effect of puerulus removal or habitat changes.

International participation at the workshop (from NZ, Japan & USA) was helpful in fostering links in this field of research.

Keywords: Southern rock lobster, resource sustainability, recruitment, aquaculture, mortality, density dependence.

Final Report • 2000-06-26 • 521.60 KB
1998-362-DLD.pdf

Summary

Research into the southern rock lobster in Australia has concentrated on the catching sector (primarily commercial) with limited research being undertaken on the post-settlement and juvenile stages.  To maximise the outputs of investigating these stages, while at the same time minimising costs, a comprehensive understanding of the latest developments in the field is necessary. It was considered that this was best served by holding a workshop to review existing research, facilitate discussion amongst those involved in the area of research, and plan future research in relation to southern rock lobster. 

Key issues for the workshop were considered to be: (1) the relevance of juvenile research to catch prediction; (2) growth information for stock assessment modelling; (3) impact and management of puerulus extraction for aquaculture; and (4) contribution to broader management in relation to conservation of egg production vs perceptions of stability of recruitment due to density dependent mortality.

Participants at the workshop reviewed the current status of knowledge in post-settlement rock lobster research, including methods used to research these cryptic stages.  Participants included key industry, government and research partners and their discussions resulted in a collaborative research plan aimed at investigating post-settlement processes.  Key areas were documenting macro-habitat requirements, growth rates, mortality estimates of juveniles and puerulus, identifying predators and competitors.  The over-riding goal was considered to be the identification of
“bottlenecks”. 

"Bottlenecks" are phases during development where a factor affecting abundance decouples the link between the abundance of a size class for that proceeding it. For instance, shelter limitation for a particular size class is a bottleneck as this would result in reduced inter-annual variation in the abundance of larger animals. The research proposed from this workshop would evaluate bottlenecks by identifying the stages and factors during juvenile development where density dependent mortality influences abundance. These factors reduce the signal between puerulus abundance indices to fishery recruitment and are important in understanding the effect of puerulus removal or habitat changes.

International participation at the workshop (from NZ, Japan & USA) was helpful in fostering links in this field of research.

Keywords: Southern rock lobster, resource sustainability, recruitment, aquaculture, mortality, density dependence.

Final Report • 2000-06-26 • 521.60 KB
1998-362-DLD.pdf

Summary

Research into the southern rock lobster in Australia has concentrated on the catching sector (primarily commercial) with limited research being undertaken on the post-settlement and juvenile stages.  To maximise the outputs of investigating these stages, while at the same time minimising costs, a comprehensive understanding of the latest developments in the field is necessary. It was considered that this was best served by holding a workshop to review existing research, facilitate discussion amongst those involved in the area of research, and plan future research in relation to southern rock lobster. 

Key issues for the workshop were considered to be: (1) the relevance of juvenile research to catch prediction; (2) growth information for stock assessment modelling; (3) impact and management of puerulus extraction for aquaculture; and (4) contribution to broader management in relation to conservation of egg production vs perceptions of stability of recruitment due to density dependent mortality.

Participants at the workshop reviewed the current status of knowledge in post-settlement rock lobster research, including methods used to research these cryptic stages.  Participants included key industry, government and research partners and their discussions resulted in a collaborative research plan aimed at investigating post-settlement processes.  Key areas were documenting macro-habitat requirements, growth rates, mortality estimates of juveniles and puerulus, identifying predators and competitors.  The over-riding goal was considered to be the identification of
“bottlenecks”. 

"Bottlenecks" are phases during development where a factor affecting abundance decouples the link between the abundance of a size class for that proceeding it. For instance, shelter limitation for a particular size class is a bottleneck as this would result in reduced inter-annual variation in the abundance of larger animals. The research proposed from this workshop would evaluate bottlenecks by identifying the stages and factors during juvenile development where density dependent mortality influences abundance. These factors reduce the signal between puerulus abundance indices to fishery recruitment and are important in understanding the effect of puerulus removal or habitat changes.

International participation at the workshop (from NZ, Japan & USA) was helpful in fostering links in this field of research.

Keywords: Southern rock lobster, resource sustainability, recruitment, aquaculture, mortality, density dependence.

Final Report • 2000-06-26 • 521.60 KB
1998-362-DLD.pdf

Summary

Research into the southern rock lobster in Australia has concentrated on the catching sector (primarily commercial) with limited research being undertaken on the post-settlement and juvenile stages.  To maximise the outputs of investigating these stages, while at the same time minimising costs, a comprehensive understanding of the latest developments in the field is necessary. It was considered that this was best served by holding a workshop to review existing research, facilitate discussion amongst those involved in the area of research, and plan future research in relation to southern rock lobster. 

Key issues for the workshop were considered to be: (1) the relevance of juvenile research to catch prediction; (2) growth information for stock assessment modelling; (3) impact and management of puerulus extraction for aquaculture; and (4) contribution to broader management in relation to conservation of egg production vs perceptions of stability of recruitment due to density dependent mortality.

Participants at the workshop reviewed the current status of knowledge in post-settlement rock lobster research, including methods used to research these cryptic stages.  Participants included key industry, government and research partners and their discussions resulted in a collaborative research plan aimed at investigating post-settlement processes.  Key areas were documenting macro-habitat requirements, growth rates, mortality estimates of juveniles and puerulus, identifying predators and competitors.  The over-riding goal was considered to be the identification of
“bottlenecks”. 

"Bottlenecks" are phases during development where a factor affecting abundance decouples the link between the abundance of a size class for that proceeding it. For instance, shelter limitation for a particular size class is a bottleneck as this would result in reduced inter-annual variation in the abundance of larger animals. The research proposed from this workshop would evaluate bottlenecks by identifying the stages and factors during juvenile development where density dependent mortality influences abundance. These factors reduce the signal between puerulus abundance indices to fishery recruitment and are important in understanding the effect of puerulus removal or habitat changes.

International participation at the workshop (from NZ, Japan & USA) was helpful in fostering links in this field of research.

Keywords: Southern rock lobster, resource sustainability, recruitment, aquaculture, mortality, density dependence.

Final Report • 2000-06-26 • 521.60 KB
1998-362-DLD.pdf

Summary

Research into the southern rock lobster in Australia has concentrated on the catching sector (primarily commercial) with limited research being undertaken on the post-settlement and juvenile stages.  To maximise the outputs of investigating these stages, while at the same time minimising costs, a comprehensive understanding of the latest developments in the field is necessary. It was considered that this was best served by holding a workshop to review existing research, facilitate discussion amongst those involved in the area of research, and plan future research in relation to southern rock lobster. 

Key issues for the workshop were considered to be: (1) the relevance of juvenile research to catch prediction; (2) growth information for stock assessment modelling; (3) impact and management of puerulus extraction for aquaculture; and (4) contribution to broader management in relation to conservation of egg production vs perceptions of stability of recruitment due to density dependent mortality.

Participants at the workshop reviewed the current status of knowledge in post-settlement rock lobster research, including methods used to research these cryptic stages.  Participants included key industry, government and research partners and their discussions resulted in a collaborative research plan aimed at investigating post-settlement processes.  Key areas were documenting macro-habitat requirements, growth rates, mortality estimates of juveniles and puerulus, identifying predators and competitors.  The over-riding goal was considered to be the identification of
“bottlenecks”. 

"Bottlenecks" are phases during development where a factor affecting abundance decouples the link between the abundance of a size class for that proceeding it. For instance, shelter limitation for a particular size class is a bottleneck as this would result in reduced inter-annual variation in the abundance of larger animals. The research proposed from this workshop would evaluate bottlenecks by identifying the stages and factors during juvenile development where density dependent mortality influences abundance. These factors reduce the signal between puerulus abundance indices to fishery recruitment and are important in understanding the effect of puerulus removal or habitat changes.

International participation at the workshop (from NZ, Japan & USA) was helpful in fostering links in this field of research.

Keywords: Southern rock lobster, resource sustainability, recruitment, aquaculture, mortality, density dependence.

Adoption
PROJECT NUMBER • 1998-343
PROJECT STATUS:
COMPLETED

9th International Conference on Harmful Algal Blooms, 7-11 February 2000, Hobart

The FRDC sponsored 9th International Conference on Harmful Algal Blooms held in Hobart, Tasmania, from 7-11 February 2000, was a resounding success. It was the largest conference on this topic (526 participants from 47 countries) ever held anywhere in the world. A total of 130 talks and 308 poster...
ORGANISATION:
University of Tasmania (UTAS)
Industry
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