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Genetic Baseline for Cook Inlet Coho Salmon and Evaluations for Mixed Stock Analysis

出版	Alaska Department of Fish and Game, Division of Sport Fish, Research and Technical Services, 2019
URL	http://books.google.com.hk/books?id=awdNzAEACAAJ&hl=&source=gbs_api

註釋This report describes the updated genetic baseline for Cook Inlet coho salmon and includes new evaluations for mixed stock analysis (MSA) in Cook Inlet. Coho salmon are harvested in commercial fisheries in Upper Cook Inlet, Alaska, with an average annual harvest of 180,005 fish (2008?2017). Harvests often occur in areas where stocks intermingle, so the exploitation and productivity of individual stocks are not well known. This lack of knowledge hinders fishery management based on the sustained yield principle. Genetic analysis, using single nucleotide polymorphism (SNP) technology, can discriminate among discrete fish stocks in fishery samples when adequate stock structure exists. Here, we update a previously reported baseline of 84 populations using 86 SNP markers with an additional 10 populations and a set of 82 SNP markers included in the previous baseline to determine population structure and test potential reporting groups for MSA. Testing of potential reporting groups revealed 11 groups with adequate genetic divergence to meet the criteria for reporting groups. The data presented in this report will allow for additional baseline evaluation tests tailored for specific MSA study objectives pertinent to Cook Inlet mixed stock fisheries in the future.