Phylogeography, Postglacial Gene Flow, and Population History of North American Northern Goshawks (Accipiter gentilis)
Phylogeography, Postglacial Gene Flow, and Population History of North American Northern Goshawks (Accipiter gentilis)
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北美北苍鹰（Accipiter gentilis）的系统发育地理学、冰后基因流和种群史
DOI：
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发表时间：
2013
期刊：
影响因子：
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通讯作者：
M. Antolin
中科院分区：
文献类型：
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作者：
Shelley Bayard de Volo;R. Reynolds;S. Sonsthagen;S. Talbot;M. Antolin
摘要。第四纪的气候循环在北美鸟类谱系的多样化中发挥了关键作用，极大地影响了当代种群的遗传特征。为了检验这一假设，北美北方苍鹰（Accipitergenalus）在历史上孤立在多个晚更新世避难所，我们评估了多样性和人口遗传结构以及迁移率和签名的历史人口使用线粒体控制区数据。在从24个地点取样的基础上，我们发现北方苍鹰在北美大部分地区的遗传结构。长期的人口稳定性，结合强大的遗传分化，表明北方苍鹰历史上被隔离在至少三个避难人口代表两个地区：太平洋（CascadesSierra温哥华岛）和西南（科罗拉多高原和Jemez山脉）。相比之下，经历显著增长的种群位于阿拉斯加东南部-不列颠哥伦比亚、亚利桑那州天空群岛、落基山脉、五大湖和阿巴拉契亚生物区。在阿拉斯加东南部-不列颠哥伦比亚、亚利桑那州天空群岛和落基山脉，北方苍鹰可能是从周围的避难所殖民到这些地区的。亚利桑那州天空岛北方苍鹰（A. gapache）表明殖民化后的长期隔离。同样，五大湖和阿巴拉契亚北方苍鹰的单倍型频率与大多数西部北方苍鹰显著不同，这表明它们也经历了长期的隔离，然后才是最近美国东部森林的退化。
ABSTRACT. Climate cycling during the Quaternary played a critical role in the diversification of avian lineages in North America, greatly influencing the genetic characteristics of contemporary populations. To test the hypothesis that North American Northern Goshawks (Accipitergentilis) were historically isolated within multiple Late Pleistocene refugia, we assessed diversity and population genetic structure as well as migration rates and signatures of historical demography using mitochondrial control-region data. On the basis of sampling from 24 locales, we found that Northern Goshawks were genetically structured across a large portion of their North American range. Long-term population stability, combined with strong genetic differentiation, suggests that Northern Goshawks were historically isolated within at least three refugial populations representing two regions: the Pacific (CascadesSierra-Vancouver Island) and the Southwest (Colorado Plateau and Jemez Mountains). By contrast, populations experiencing significant growth were located in the Southeast Alaska-British Columbia, Arizona Sky Islands, Rocky Mountains, Great Lakes, and Appalachian bioregions. In the case of Southeast Alaska-British Columbia, Arizona Sky Islands, and Rocky Mountains, Northern Goshawks likely colonized these regions from surrounding refugia. The near fixation for several endemic haplotypes in the Arizona Sky Island Northern Goshawks (A. g apache) suggests long-term isolation subsequent to colonization. Likewise, Great Lakes and Appalachian Northern Goshawks differed significantly in haplotype frequencies from most Western Northern Goshawks, which suggests that they, too, experienced long-term isolation prior to a more recent recolonization of eastern U.S. forests.
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