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  • 标题:To examine the rate of depletion of selected bycatch species (indicator species) to ensure bycatch CPUE is related to actual abundance
  • 作者:M. Kangas
  • 期刊名称:Western Australia. Fisheries Department. Fisheries Research Reports
  • 印刷版ISSN:1035-4549
  • 出版年度:2006
  • 卷号:160
  • 出版社:Government of Western Australia / Department of Fisheries
  • 摘要:Prawn trawling is a non-selective form of fishing however, prawn/scallop trawl nets are designed and set so that they are generally more efficient at catching the target species than bycatch as in most cases these species require significant sorting and handling and are discarded overboard. Using demersal trawling as a sampling method has its limitations in describing the overall biodiversity of a region because of what the nets sample effectively. This study should not be considered as a project describing overall biodiversity in the areas sampled but the biodiversity of fauna caught in prawn trawl nets. Limited sampling with fish trawl gear was undertaken at a few sites on one occasion to determine selectivity characteristics of the prawn net compared to a fish trawl net but these trials were not comprehensive.
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