Genetic Variation among Japanese Populations of Chum Salmon Inferred from the Nucleotide Sequences of the Mitochondrial DNA Control Region
Genetic Variation among Japanese Populations of Chum Salmon Inferred from the Nucleotide Sequences of the Mitochondrial DNA Control Region
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从线粒体 DNA 控制区的核苷酸序列推断日本鲑鱼种群的遗传变异
DOI：
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发表时间：
2001
期刊：
影响因子：
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通讯作者：
S. Abe
中科院分区：
文献类型：
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作者：
S. Sato;J. Ando;H. Ando;S. Urawa;A. Urano;S. Abe
对采集于日本北海道和本州11条河流的12个种群的500个个体的线粒体DNA控制区5′端500 bp可变区的核苷酸序列进行了分析。序列的比较显示10个可变位点，在所检查的个体中定义了总共12个单倍型。所有12种单倍型都出现在7个北海道群体中，而在5个本州群体中只发现了6种单倍型。在这些单倍型中，有两个在所有的北海道和本州人群中是常见的。AMOVA分析表明，在北海道、本州太平洋沿岸和本州日本海沿岸三个地理区域之间存在遗传分化。北海道群体的单倍型多样性高于本州群体，表明北海道群体的遗传变异大于本州群体。两两种群FST的估计结果表明，北海道和本州太平洋沿岸种群间的差异是造成这种区域分化的主要原因。
Abstract We examined the nucleotide sequences of 500 bp variable portion from the 5′ end of mitochondrial (mt) DNA control region in about 500 individuals from 12 populations that were captured in 11 rivers, six in Hokkaido and five in Honshu, Japan. Comparison of the sequences showed 10 variable sites, defining a total of 12 haplotypes in the examined individuals. All the 12 haplotypes occurred in seven Hokkaido populations, whereas only six haplotypes were found in the five Honshu populations. Among these haplotypes, two were common in all the Hokkaido and Honshu populations. The AMOVA analysis inferred a genetic differentiation among three geographic regions, i.e. Hokkaido, Pacific Ocean coast in Honshu, and Japan Sea coast in Honshu. Haplotype diversity was higher in the populations of Hokkaido than those of Honshu, indicating a greater genetic variation in the Hokkaido than the Honshu populations. The estimates of pairwise population FST suggested that the regional differentiation was mostly ascribed to the divergence between populations in Hokkaido and the Pacific coast in Honshu.