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首页> 外文期刊>Current zoology >Population structure and demographic history of the chukar partridge Alectoris chukar in China
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Population structure and demographic history of the chukar partridge Alectoris chukar in China

机译：中国chu族part蛇的人口结构和人口历史

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Pleistocene climate fluctuations have shaped the patterns of genetic diversity observed in extant species. Although the effects of recent glacial cycles on genetic diversity have been well studied on species in Europe and North America, geneticlegacy of species in the Pleistocene in north and northwest of China where glaciations was not synchronous with the ice sheet development in the Northern Hemisphere or or had little or no ice cover during the glaciations’ period, remains poorly understood. Here we used phylogeographic methods to investigate the genetic structure and population history of the chukar partridge Alectoris chukar in north and northwest China. A 1,152 – 1,154 bp portion of the mtDNA CR were sequenced for all 279 specimens and a total number of 91 haplotypes were defined by 113 variable sites. High levels of gene flow were found and gene flow estimates were greater than 1 for most population pairs in our study. The AMOVA analysis showed that 81% and 16% of the total genetic variability was found within populations and among populations within groups, respectively. The demographic history of chukar was examined using neutrality tests and mismatch distribution analyses and results indicated Late Pleistocene population expansion. Results revealed that most populations of chukar experienced population expansion during 0.027 ? 0.06 Ma. These results are at odds with the results found in Europe and North America, where population expansions occurred after Last Glacial Maximum (LGM, 0.023 to 0.018 Ma). Our results are not consistent with the results from avian species of Tibetan Plateau, either, where species experienced population expansion following the retreat of the extensive glaciation period (0.5 to 0.175 Ma)
机译：更新世的气候波动影响了现存物种中遗传多样性的格局。尽管最近的冰川周期对遗传多样性的影响已在欧洲和北美的物种上进行了很好的研究，但在中国北部和西北部的更新世物种的遗传遗产中，冰川作用与北半球或在冰河时期几乎没有或几乎没有冰盖，但仍知之甚少。在这里，我们使用系统地理学的方法来调查中国北方和西北地区的kar的遗传结构和种群历史。对所有279个标本的mtDNA CR进行了1,152 – 1,154 bp的测序，共有113个可变位点定义了91个单倍型。在我们的研究中，发现大多数人群对的基因流水平很高，并且基因流估计值大于1。 AMOVA分析表明，总的遗传变异性的81％和16％分别在人群中和群体中的人群中发现。使用中性测试和不匹配分布分析检查了chukar的人口历史，结果表明晚更新世人口膨胀。结果显示，大多数丘卡族人口在0.027？n内经历了人口膨胀。 0.06毫安。这些结果与在欧洲和北美发现的结果不一致，在欧洲和北美，人口增长发生在上一次冰河期之后（LGM，0.023至0.018 Ma）。我们的结果也与青藏高原的鸟类物种的结果不一致，青藏高原的鸟类物种在广泛的冰川期（0.5至0.175 Ma）后退后经历了种群扩展

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