Program 1 (Production Innovation) Abalone Research Projects |
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2005/029 - Factors limiting the resilience and recovery of fishing abalone populations 2009/710 - Bioecomic evaluation of commercial scale stock enhancement in Abalone ____________________________________________ |
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Factors Limiting the Resilience and Recovery of Fishing Abalone Populations
About the Project As abalone management is becoming increasingly more focused on varying finer spatial scales, the effects of localised depletion, varying growth rates between reef systems and the accuracy of mimimum legal lengths are increasing in importance. More recently, the impacts associated with the abalone virus on wild abalone populations has put further pressure on the management of stocks and the need for stock rebuilding strategies. This project has successfully translocated abalone between sites in Tasmania and has also begun undertaking larval dispersion analysis. Translocation, if feasible may provide one mechanism to enhance previously depleted reef. The use of hatchery produced larvae as a re-seeding technology has previously been shown to be problematic and dependent on an understanding of the habitat type, existing abalone density, environmental conditions and the deployment methodology. The project has commenced assessment of larvae as a possible cheaper option. Larval technology offers a method that could be used for large scale dispersion. Project Objectives
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COMPLETED PROJECT Scope and Economic Analysis of Options for a Nationally Unified Breeding Program that Provides Significant Economic Benefit to the Australian Abalone Aquaculture Industry
About the Project The major limitation to the economic profitability and growth of the industry has been the long production time of abalone to reach market size. This project will assist in the development of a coordinated national breeding program for cultured Australian abalone. The industry sees selective breeding as offering the greatest return on investment. Project Objectives 1. To model the Tasmanian GW program(s) and alternative mainland strategies and determine the optimal strategy for a unified coordinated program. 2. To identify the areas of collaboration for adding value to each program and the standardisation of procedures needed to ensure collaboration is achieved. 3. To identify key researchable constraints to the implementation of the breeding program, prioritise the research objectives and identify funding options. 4. The cooperative breeding program that develops will aim to achieve the objectives of the Australian Abalone Growers Association. ___________________________________________________ |
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Bioeconomic Evaluation of Commercial Scale Stock Enhancement in Abalone
About the Project Stock enhancement remains one of the few viable alternatives for increasing the profitability and biomass of a fishery without compromising the current fishery in terms of access or allowable catches. Economically viable stock enhancement will provide the fishery with a biomass level that may only ever be achieved in an exceptional year of natural recruitment, and in the longer term, it will rebuild stock numbers towards virgin levels, thus increasing catch rates and ultimately economic efficiency and However, there is a need for robust evaluation of the bioeconomics of stock enhancement in Abalone with long-term growth and survival and accurate economic data, and a proper assessment of the ecological impacts of such an activity. To date most work has focused on small-scale, short-term field Project Objectives
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This page was last updated: 22nd December 2009
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