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首页> 外文期刊>Fisheries science >Genetic population structure of the Pacific bluefin tuna Thunnus orientalis and the yellowfin tuna Thunnus albacares in the North Pacific Ocean
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Genetic population structure of the Pacific bluefin tuna Thunnus orientalis and the yellowfin tuna Thunnus albacares in the North Pacific Ocean

机译：北太平洋太平洋蓝鳍金枪鱼东方金枪鱼和黄鳍金枪鱼白鳍金枪鱼的遗传种群结构

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摘要

The genetic population structure of the Pacific bluefin tuna (PBF) Thunnus orientalis and the yellowfin tuna (YFT) T. albacares in the North Pacific Ocean was investigated. The polymorphism of microsatellite (SSR) loci and sequences of mitochondrial DNA control region (mtCR) were analyzed for 71 samples of PBF from Japan and Mexico and 45 samples of YFT from Japan and Panama. In the SSR analyses, both single-locus (?0.010 to 0.008 in PBF and ?0.023 to 0.020 in YFT) and global multilocus (0.003 in PBF and ?0.002 in YFT) FST values among the geographic populations were low and not significant in these species. In the mtCR analyses, neither the neighbor-joining tree nor the minimum spanning network showed genetic differentiation among the geographic populations in each species. The pairwise FST values among the geographic populations of them (?0.005 in PBF and ?0.020 to ?0.014 in YFT) were low and not significant. Our SSR and mtCR data suggested that genetic differentiations were not evident among the eastern and western populations in the North Pacific Ocean either in PBF or in YFT. Mismatch distributions, demographic parameters, and neutrality tests suggested that sudden population expansion of PBF and YFT in the North Pacific Ocean occurred 628,000–731,000 and 450,000–525,000?years ago, respectively.
机译：研究了北太平洋太平洋蓝鳍金枪鱼（PBF）东方金枪鱼和黄鳍金枪鱼（YFT）白鳍金枪鱼的遗传种群结构。分析了来自日本和墨西哥的71个PBF样品和来自日本和巴拿马的45个YFT样品的微卫星（SSR）位点多态性和线粒体DNA控制区（mtCR）序列。在SSR分析中，地理种群中的单基因座（PBF为0.010至0.008，YFT为0.023至0.020）和全球多基因位（PBF为0.003，YFT为0.002），FST值均较低且在这些人群中不显着种类。在mtCR分析中，相邻物种的树和最小跨度网络均未显示每种物种的地理种群之间的遗传分化。在它们的地理种群中，成对的FST值较低（PBF中的0.005，YFT中的0.020至0.014至0.014）并不明显。我们的SSR和mtCR数据表明，在PBF或YFT中，北太平洋东部和西部种群之间的遗传分化并不明显。不匹配的分布，人口统计学参数和中立性测试表明，北太平洋的PBF和YFT人口突然膨胀分别发生在628,000-731,000和450,000-525,000年前。

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