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Title: Prawn Fishery By-catch and Discards: marine ecosystem analysis - population effects
Contributor(s): Svane, Ib (author); Rodda, Kate (author); Thomas, Philip (author)
Corporate Author: Fisheries Research and Development Corporation
Publication Date: 2007
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Abstract: In prawn trawl fisheries, the catch and discard of non-target species (by-catch) can have an impact on the ecosystem and species populations, particularly by the favouring of scavengers and removal of top predators. An understanding of the fished ecosystem, including species composition, abundance, catchability, and survival, is instrumental for the adoption of the principle of ecological sustainability and implementation of ecosystem-based management. The research reported here constitutes three separate studies, a) an ecological assessment of quantitatively dominant by-catch species using a consistent rigorous statistical approach for hypotheses testing applied to data sampled at five selected sites at the Spencer Gulf prawn fishing grounds with a history of different trawling intensities, b) a detailed assessment of physiological stress, and mortality of selected by-catch species during capture and handling, and c) a field and laboratory experimental study of movements and feeding behaviour of Port Jackson sharks during trawl operations.
Publication Type: Report
Publisher: Fisheries Research and Development Corporation and South Australian Research and Development Institute (SARDI) Aquatic Sciences
Place of Publication: Adelaide, Australia
ISBN: 0730853616
Field of Research (FOR): 060199 Biochemistry and Cell Biology not elsewhere classified
050299 Environmental Science and Management not elsewhere classified
050209 Natural Resource Management
Socio-Economic Objective (SEO): 830204 Wild Caught Fin Fish (excl. Tuna)
960503 Ecosystem Assessment and Management of Coastal and Estuarine Environments
830202 Wild Caught Crustaceans (excl. Rock Lobster and Prawns)
HERDC Category Description: R1 Report
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Series Name: SARDI Research Report Series
Series Number : 199
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