19 results
Environment
PROJECT NUMBER • 2004-214
PROJECT STATUS:
COMPLETED

Aquafin CRC - Atlantic Salmon Aquaculture Subprogram: effects of husbandry on AGD

Before this project our knowledge of the effects of husbandry on Amoebic Gill Disease (AGD) was limited. This project allowed on-farm assessment of effects of husbandry procedures and stock characteristics on AGD severity. Furthermore, we investigated the potential to re-use fresh water for...
ORGANISATION:
University of Tasmania (UTAS)

SCRC: Improvements in Yellowtail Kingfish larval and juvenile survival and quality

Project number: 2009-749.20
Project Status:
Completed
Budget expenditure: $0.00
Principal Investigator: Michael Thomson
Organisation: University of Tasmania (UTAS)
Project start/end date: 14 Jul 2008 - 29 Sep 2010
Contact:
FRDC

Need

Yellowtail Kingfish culture is a rapidly expanding industry in Australia, particularly in rural South Australia, where it is driving the increase in the ‘other’ category of aquaculture production from ~1100 tonnes valued at ~$9 million in 2002-03 to 2000 tonnes and $17 million in 2004-05 (ABARE, 2006). Regarding future production, CST alone are projecting an increase in annual production towards 8,000 T by 2015.

CST is the largest producer of Yellowtail Kingfish in Australia having produced over 1.25 M juveniles in 2007. The company operates two Yellowtail Kingfish hatcheries at Arno Bay and Port Augusta. The production of quality larvae from hatcheries underpins the production of farmed fish and low survival and high levels of malformations significantly increase costs.

Survival of Yellowtail Kingfish juveniles in Australian marine hatcheries is very low in comparison to many other marine species such as sea bass and bream produced in larger more mature industries, for example in Europe. Of particular note, several skeletal malformations have been reported in Australia and New Zealand, although few are well documented (Yellowtail Kingfish, Cobcroft et al., 2004).

There is also high variability in hatchery survival rates and the rate and severity of deformities among production runs and commercial hatcheries.

By way of illustration, the direct benefit to Clean Seas Tuna Ltd. of reducing malformations in Yellowtail Kingfish is estimated to be $1 million p.a. In this example a reduction in malformations from 40% to 20% (on 2.0 M juveniles before quality grading) could produce a further 400,000 good quality juveniles @ $2.50 (market value) = $1,000,000.

Blank
PROJECT NUMBER • 2010-724
PROJECT STATUS:
COMPLETED

SCRC: PhD 6.06 Development of tools for the sustainable management of genetics in polyploid Pacific Oysters (Crassostrea gigas) (Assoc Prof Anthony Koutoulis; Student Penny Miller)

The commercial production of triploid Pacific Oysters (Crassostrea gigas) has grown rapidly in recent years. There is now a push to move away from commonly used mass spawning techniques towards single pair cross selective breeding programs in an effort to improve growth and disease resistance within...
ORGANISATION:
University of Tasmania (UTAS)
Industry
PROJECT NUMBER • 2016-804
PROJECT STATUS:
COMPLETED

Future oysters CRC-P: Advanced understanding of POMS to guide farm management decisions in Tasmania

The objectives of our research have been to determine the high-risk periods for POMS infection and to develop a predictive framework so that the farmers can forecast danger periods for POMS. This includes developing a better understanding of where the virus exists in the environment and the factors...
ORGANISATION:
University of Tasmania (UTAS)
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