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首页> 外文期刊>Chelonian conservation and biology >Population Genetic Structure of the Threatened Amazon River Turtle, Podocnemis sextuberculata (Testudines, Podocnemididae)
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Population Genetic Structure of the Threatened Amazon River Turtle, Podocnemis sextuberculata (Testudines, Podocnemididae)

机译：受威胁的亚马逊河龟（Podocnemis sextuberculata）的种群遗传结构（Testudines，Podocnemididae）

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摘要

Podocnemis sextuberculata (Pleurodira: Podocnemididae) is widely distributed throughout the Amazon drainage basin in Brazil, Colombia, and Peru. Telemetry and previous molecular data suggest that P. sextuberculata lacks population structure in the central Amazon basin of Brazil. Generalization of these results, however, requires much-broader sampling across a range of habitats of this broadly distributed species. For this reason, we tested the hypothesis of panmixia in P. sextuberculata, analyzing a total of 319 specimens sequenced for the mitochondrial control region. Our sampling included localities from 16 areas in the Amazon basin from rivers characteristic of the Amazon basin (whitewater), clearwater rivers of the Guiana shield (Branco, Trombetas, and Nhamunda rivers), and the Brazilian shield (Xingu River). The hypothesis of panmixia was rejected because the results of analysis of molecular variance, pairwise VST, and Bayesian analysis of population structure indicated population structure in the group of individuals from the locality of Xingu which was not correlated to a pattern of isolation by distance. We suggest that the populations of P. sextuberculata of the Brazilian Amazon basin are composed of 2 management units, one represented by populations restricted to the Xingu River and the other represented by all other populations. The population of the Xingu should be viewed with attention and concern, especially considering the direct and indirect impacts of damming the Xingu River.
机译：Podocnemis sextuberculata（Pleurodira：Podocnemididae）广泛分布于巴西，哥伦比亚和秘鲁的整个亚马逊流域。遥测和先前的分子数据表明，巴西中部亚马逊盆地的性繁殖假单胞菌缺乏种群结构。但是，要对这些结果进行概括，就需要在这种广泛分布的物种的一系列生境中进行更广泛的采样。由于这个原因，我们测试了假单胞菌中的混合虫假说，分析了总共319个针对线粒体控制区测序的标本。我们的采样包括亚马逊河流域特有的河流（白水），圭亚那盾构的清水河（布兰科河，特罗姆贝茨河和纳蒙达河）和巴西盾构（新古河）的亚马逊河流域16个地区的地区。泛滥症的假说被否定了，因为分子变异分析，成对VST和贝叶斯人口结构分析结果表明，新姑地区的个体群体中的人口结构与按距离隔离的模式无关。我们建议巴西亚马孙河流域的P. sextuberculata种群由2个管理单位组成，一个由限制在新姑河的种群代表，另一个由所有其他种群代表。应当特别关注新姑河大坝的直接和间接影响，应特别关注和关注新姑河的居民。

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