Comparison of genetic structure between juvenile and adult masu salmon indicates relatively low reproductive success of dispersers.
Comparison of genetic structure between juvenile and adult masu salmon indicates relatively low reproductive success of dispersers.
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幼年马苏鲑鱼和成年马苏鲑鱼的遗传结构比较表明，分散者的繁殖成功率相对较低。
DOI：
10.1007/s10641-014-0271-6
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发表时间：
2015
影响因子：
1.4
通讯作者：
S. and Yamamoto,
中科院分区：
文献类型：
--
作者：
Kitanishi;S. and Yamamoto,
阐明种群遗传结构和基因流是识别进化过程和有效保护的关键。在这项研究中，我们研究了日本北海道厚田河的马苏鲑鱼（Oncorhynchus masou）种群的遗传结构。此外，为了推断扩散是否有助于下一代的基因库，少年和成年马苏鲑鱼的遗传结构进行了比较。显着的遗传分化和隔离的距离观察到的青少年和成年人之间的人口。遗传分化的程度是较大的少年样品，特别是在地理上遥远的样品，比成人之间。这些结果表明，一些相对稳定的离散人口保持在河流中，分散到遥远的支流的繁殖成功率相对较低，在遥远的支流。
Delineating population genetic structure and gene flow is a critical for identifying evolutionary processes and effective conservation. In this study, we examined the genetic structure of masu salmon (Oncorhynchus masou) populations within the Atsuta River, Hokkaido, Japan. In addition, to infer whether dispersers contribute to next generation’s gene pool, a comparison between the genetic structure of juvenile and adult masu salmon was conducted. Significant genetic differentiation and isolation by distance were observed among populations of both juveniles and adults. The degree of genetic differentiation was larger among the juvenile samples, especially among geographically distant samples, than among the adults. These results suggest that a number of relatively stable discrete populations are maintained in the river and that the reproductive success of dispersers to distant tributaries was relatively low among distant tributaries.