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PROJECT NUMBER • 2010-719
PROJECT STATUS:
COMPLETED

SCRC: SCRC RTG: Training in endocrine diagnostic techniques and hormone analysis of thermally challenged female Atlantic Salmon broodstock

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...
ORGANISATION:
University of the Sunshine Coast (USC)

SCRC: SCRC Honours Scholarship H3.1– Impact of commercial hatchery practices on the contribution of broodstock to offspring and genetic diversity in the Yellowtail Kingfish breeding program (Dr Alex Safari: Student Daniel Tan)

Project number: 2009-763
Project Status:
Completed
Budget expenditure: $0.00
Principal Investigator: Alex Safari
Organisation: Flinders University
Project start/end date: 30 Sep 2009 - 29 Sep 2010
Contact:
FRDC

Final report

ISBN: 978-1-925982-29-9
Author: Daniel Tan
Final Report • 2010-09-30 • 342.44 KB
2009-763-DLD-Hons.pdf

Summary

Using small numbers of broodstock for breeding often leads to random drift in gene frequencies between generations. Effective population size (Ne) is used as an indicator to assess the rate of inbreeding and loss of genetic variation in small populations. In this study we used six microsatellites, coupled with DNA parentage analyses, to determine the relative contributions from two commercial Yellowtail Kingfish hatchery broodstock groups over four pooled spawning events (two for each group).

Initial broodstock contributions from the dams was found to be highly skewed, with one dominant dam contributing more than 70% of the offspring (1-day post hatch, dph) in three of the pooled spawning events, while two dams contributed fairly equally to the offspring in the fourth pooled spawning event. Two sires were found to be contributing more that 78% of the offspring in one pooled spawning event, while contributions between the sires were fairly equal in the other three spawning events. The student then examined the differential survival of family size through the hatchery production (from 1 to 25 dph) during which time mortality averaged 80%. Parentage analyses indicated that through the process some maternal and paternal contributions that had been initially represented in the 1-dph offspring 3 were lost. There were also significant changes in the frequencies of progeny from individual dams and sires from day 1 to day 25.

These results indicate that hatchery breeding practices and high mortality during early larvae culture would result in poor retention of genetic variability across generations. With the actual Ne being less than half of the census Ne inbreeding rates would be relatively high if the current broodstock population was closed and future broodstock were derived from existing hatchery systems.

Industry
PROJECT NUMBER • 2016-801
PROJECT STATUS:
COMPLETED

Future oysters CRC-P: Enhancing Pacific Oyster breeding to optimise national benefits

The research was conducted as a direct consequence of the 2016 Pacific Oyster Mortality Syndrome (POMS) outbreak TAS which decimated parts of this State’s Pacific Oyster (Crassostrea gigas) industry and caused numerous flow on effects throughout the entire Australian industry. The project was...
ORGANISATION:
Australian Seafood Industries Pty Ltd (ASI)
Industry
PROJECT NUMBER • 1995-166
PROJECT STATUS:
COMPLETED

High quality eggs and nauplii for the Australian prawn industry.

Prawn farming is the most valuable aquaculture sector in Queensland and is a priority development industry for the State Government. Marine prawns have provided the major growth in this industry with a value of $37 million in 2000/01, or over 66% of the value of Queensland aquaculture. Nevertheless...
ORGANISATION:
Australian Institute Of Marine Science (AIMS)
Industry
PROJECT NUMBER • 2008-756
PROJECT STATUS:
COMPLETED

Seafood CRC: increasing seedstock production of domesticated giant tiger prawns (Penaeus monodon) through improved male fertility

Given the rationale that pond systems are likely the most cost-effective system for large-scale production of Giant Tiger Prawn (Penaeus monodon) broodstock, this project aimed to determine whether pond-rearing poses a significant risk for broodstock production. The gross reproductive development of...
ORGANISATION:
CSIRO Oceans and Atmosphere Hobart
Industry
PROJECT NUMBER • 2014-242
PROJECT STATUS:
COMPLETED

Commercialising the production of Cobia in Australia

This project is a collaboration between the Department of Agriculture and Fisheries (DAF) and the Cobia aquaculture sector, predominantly Pacific Reef Fisheries (PRF). It was undertaken to consolidate the aquaculture in Australia of Cobia, a species offering considerable potential as a...
ORGANISATION:
Department of Primary Industries (QLD)
SPECIES
Industry
PROJECT NUMBER • 2009-730
PROJECT STATUS:
COMPLETED

Seafood CRC: development of barramundi selective breeding entity II

In summary, we have made significant progress towards the establishment of the selective breeding program for barramundi by: Registering a company for selective breeding of barramundi (Barratek) and producing a genetic business plan and lobbying document. Identifying and characterising...
ORGANISATION:
Flinders University
SPECIES
Industry
PROJECT NUMBER • 1995-080
PROJECT STATUS:
COMPLETED

DNA microsatellite variation in Atlantic salmon

The aquaculture of Atlantic salmon began in Australia in the mid-1960' s with an importation of ova from Canada to New South Wales. Anecdotal evidence suggested that the Australian population went through a severe bottleneck event during the early years due to poor survival and subsequent small...
ORGANISATION:
CSIRO Oceans and Atmosphere Hobart
Industry
PROJECT NUMBER • 1987-082
PROJECT STATUS:
COMPLETED

Research and development of hatchery and nursery culture for the pearl oyster, Pinctada maxima

The Western Australian Pearling Industry is totally reliant on quotas of wild stock silver- or goldlip pearl oysters, Pinctada maxima. Any sustainable expansion of the Industry is unlikely to occur unless hatchery-propagated oysters become available as an alternative source to wild stock....
ORGANISATION:
Department of Primary Industries and Regional Development (DPIRD) WA
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