5 results
Industry
PROJECT NUMBER • 2010-736
PROJECT STATUS:
COMPLETED

Seafood CRC: development of formulated diets for cultured abalone

The key research findings described in this project addressed the two highest research priorities identified by the Australian Abalone Grower' Association (AAGA) in 2009, prior to the commencement of this project.: Improve our understanding of the effects of seasonal water temperatures on the...
ORGANISATION:
SARDI Food Safety and Innovation

Towards understanding greenlip abalone population structure

Project number: 2010-013
Project Status:
Completed
Budget expenditure: $447,515.00
Principal Investigator: Stephen Mayfield
Organisation: SARDI Food Safety and Innovation
Project start/end date: 31 Jul 2010 - 30 Aug 2012
Contact:
FRDC

Need

The principal need is to enhance understanding of greenlip abalone population genetic structure, and the degree to which nearby populations are connected, in order to optimally manage exploitation of commercial greenlip reef systems. Greenlip abalone support valuable fisheries across southern Australia. Total catch is >700 t with a landed value of ~$27M. Most of the catch is harvested in SA.

The majority of abalone-related funding has addressed research needs for blacklip abalone. This research has focussed on stock structure and dynamics, developing assessment and management approaches to overcome spatial complexity, and stock rebuilding strategies. Recent projects (FRDC 2004/019, 2005/024, 2005/029), have clearly demonstrated that (1) blacklip abalone populations are effectively isolated from conspecifics at fine spatial scales (Miller et al. 2009), and (2) each has typically variable life-history parameters (e.g. growth rates) that influence productivity and response to fishing.

Historically little effort has been directed towards understanding variation or interconnectedness among greenlip abalone populations. Connectivity among greenlip abalone populations is expected to be substantially different to that observed for blacklip abalone, due, in part, to environmental differences (current, swell, kelp) in reef systems they inhabit. However, there are few data to support this assertion. If, as expected, patterns of connectivity among greenlip populations differ from blacklip abalone, this will require a different approach and different scales of management and assessment.

Understanding greenlip abalone population structure is clearly a high priority in SA, Tas and WA. Development of improved techniques for assessment, definition of metapopulation boundaries and reducing the spatial scale of management are high research priorities of the SA abalone Management Plan. Investment Platform 3 in the ACA Strategic Plan similarly has developing harvest models that incorporate fine-scale fishery management to guide harvest practices and optimise yield as a research priority.

Literature cited:
Miller et al. 2009. Mol Ecol, 18:200-211

Objectives

1. Quantify greenlip abalone population genetic structure within key fishing areas.
2. Assess genetic connectivity within and among greenlip abalone populations in key fishing areas.

Final report

ISBN: 978-1-921563-55-3
Author: Stephen Mayfield
Environment
PROJECT NUMBER • 2017-051
PROJECT STATUS:
COMPLETED

Seafood CRC: Extending biotoxin capability and research in Australia through development of an experimental biotoxin contamination facility to target industry relevant issues

A short-term experimental biotoxin contamination facility was set up at Roseworthy, South Australia, to examine the uptake and depuration of marine biotoxins from one of the most toxic dinoflagellates known, Alexandrium catenella. Over the period of one year, SARDI’s Seafood Food Safety group...
ORGANISATION:
SARDI Food Safety and Innovation
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