Evaluation of a single nucleotide polymorphism baseline for genetic stock identification of Chinook Salmon (Oncorhynchus tshawytscha) in the California Current Large Marine Ecosystem

Chinook Salmon is an economically and ecologically important species, and populations from the west coast of North America are a major component of fisheries in the North Pacific Ocean. The anadromous life history strategy of this species generates populations (or stocks) that typically are differentiated from neighboring populations. In many cases, it is desirable to discern the stock of origin of an individual fish or the stock composition of a mixed sample to monitor the stock-specific effects of anthropogenic impacts and alter management strategies accordingly. Genetic stock identification (GSI) provides such discrimination, and we describe here a novel GSI baseline composed of genotypes from more than 8000 individual fish from 69 distinct populations at 96 single nucleotide polymorphism (SNP) loci. The populations included in this baseline represent the likely sources for more than 99% of the salmon encountered in ocean fisheries of California and Oregon. This new genetic baseline ...

奇努克鲑鱼（Chinook Salmon）是兼具经济与生态价值的重要物种，其北美西海岸种群是北太平洋渔业的核心组成部分。该物种的溯河洄游生活史策略，使其种群（或类群）通常与邻近种群存在遗传分化。在诸多渔业管理场景中，明确单尾鱼类的来源种群或混合样本的种群组成，可用于监测人为活动对不同种群的特异性影响，并据此调整管理策略。遗传种群识别（Genetic stock identification, GSI）可实现此类种群区分，本研究介绍了一套全新的GSI基准数据集：其包含来自69个独立种群的8000余尾个体的基因型，检测位点涵盖96个单核苷酸多态性（single nucleotide polymorphism, SNP）位点。该基准数据集涵盖的种群，覆盖了加州与俄勒冈州海洋渔业中99%以上捕获鲑鱼的潜在来源。这套全新的遗传基准数据集……