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首页> 外文期刊>Zoological Science >Population Genetic Structure and Phylogeography of Masu Salmon (Oncorhynchus masou masou) Inferred from Mitochondrial and Microsatellite DNA Analyses
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Population Genetic Structure and Phylogeography of Masu Salmon (Oncorhynchus masou masou) Inferred from Mitochondrial and Microsatellite DNA Analyses

机译：从线粒体和微卫星DNA分析推断马苏鲑（Oncorhynchus masou masou）的种群遗传结构和体表学

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摘要

The population genetic structure and phylogeography of masu salmon were investigated by using variation in the mitochondrial NADH dehydrogenase subunit 5 gene (ND5) and six polymorphic microsatellite loci among a total of 895 fish representing 18 populations collected from Japan (9), Russia (7), and Korea (2) from 2000 to 2008. An analysis of ND5 nucleotide sequences revealed 22 variable sites in about 560 bp in the 5' half of the gene, which defined 20 haplotypes, including some associated with geographical regions. Haplotype and nucleotide diversities were greater in the populations in Japan and Korea than in those in Russia, indicating greater genetic diversity in the Japanese and Korean populations than in the Russian populations. All the microsatellite loci examined showed a high level of variation, but the expected heterozygosity indicated a similar level of genetic diversity among the populations of the three regions, contrary to the results for ND5. However, AMOVA and pairwise population F-ST estimates for both ND5 and the microsatellite markers indicated a similar pattern of moderate genetic differentiation among populations of the three regions, and large population groups on the coasts of the Sea of Japan, Sea of Okhotsk, and Pacific Ocean in the Far East. From a mismatch distribution analysis and neutrality test, the observed genetic structure appears to have been influenced primarily by bottlenecks during glacial periods and population expansions during interglacial periods in the late Pleistocene.
机译：利用线粒体NADH脱氢酶亚基5基因（ND5）和六个多态性微卫星基因座中的线粒体NADH脱氢酶亚基5变异研究了代表日本（9），俄罗斯（7）的18个种群中的鲑鱼种群遗传结构和系统地理学。 ，and Korea（2）从2000年至2008年。对ND5核苷酸序列的分析显示，在该基因5'半部分约560 bp处有22个可变位点，定义了20个单倍型，其中有些与地理区域有关。日本和韩国的种群的单倍型和核苷酸多样性高于俄罗斯的种群，这表明日本和韩国的种群比俄罗斯的种群具有更大的遗传多样性。与ND5的结果相反，所检查的所有微卫星基因座均显示出较高的变异水平，但预期的杂合性表明这三个区域的人群之间的遗传多样性水平相似。但是，NDMO和微卫星标记的AMOVA和成对种群F-ST估计值表明，这三个地区以及日本海，鄂霍次克海和远东的太平洋。通过不匹配分布分析和中性测试，观察到的遗传结构似乎主要受更新世晚期冰川期瓶颈和冰川间期种群扩展的影响。

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