Colonization history of the sable Martes zibellina (Mammalia, Carnivora) on the marginal peninsula and islands of northeastern Eurasia
Colonization history of the sable Martes zibellina (Mammalia, Carnivora) on the marginal peninsula and islands of northeastern Eurasia
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DOI：
10.1093/jmammal/gyu021
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发表时间：
2015-02
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通讯作者：
G. Kinoshita;J. Sato;I. G. Meschersky;S. L. Pishchulina;L. Simakin;V. Rozhnov;B. Malyarchuk;M. Derenko;G. Denisova;L. V. Frisman;A. Kryukov;T. Hosoda;Hitoshi Suzuki
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作者：
G. Kinoshita;J. Sato;I. G. Meschersky;S. L. Pishchulina;L. Simakin;V. Rozhnov;B. Malyarchuk;M. Derenko;G. Denisova;L. V. Frisman;A. Kryukov;T. Hosoda;Hitoshi Suzuki
我们研究了279只紫貂的线粒体NADH脱氢酶亚单位2基因(976个碱基对)的核苷酸序列，这些个体来自乌拉尔山脉的不同地区，直到欧亚大陆上的俄罗斯远东和周边半岛(堪察加半岛)和岛屿(萨哈林、北海道和南千岛群岛)。黑貂的人口历史及其向东部周边半岛和岛屿的迁徙历史是用系统地理学方法推断的。分析证实了先前发现的被检查的紫貂的主要谱系，并进一步确定了新的亚系。我们的数据还支持东部边缘岛屿(库页岛、北海道和南千岛群岛)特有的谱系是由欧亚大陆祖先谱系的人口扩张产生的。据估计，库页岛人、北海道人和南千岛人的最新共同祖先存在于更新世晚期。我们还确定，库页岛上存在另一个血统，远东滨海人口也有相同的血统。我们的结果表明了从大陆到库页岛的多次迁徙事件，并表明了几个海峡的形成对黑貂血统分布的重要性。与此同时，堪察加群岛由一个单一的血统统治，这一血统也将跟随欧亚大陆的人口扩张。俄罗斯远东地区被认为是谱系多样化的源区；在该地区，遗传多样性相对较高，这与以前的研究一致。
We examined the nucleotide sequences of the mitochondrial NADH dehydrogenase subunit 2 gene (976 base pairs) for 279 individuals of the sable Martes zibellina (Carnivora, Mustelidae), derived from diverse areas throughout the regions of the Ural Mountains to the Russian Far East on the Eurasian continent and the peripheral peninsula (Kamchatka) and islands (Sakhalin, Hokkaido, and southern Kurils). The demographic history of the sable and its migration history to the eastern peripheral peninsula and islands were inferred using phylogeographic approaches. The analyses confirmed the previously found major lineages for the examined sables and further identified novel sublineages. Our data also support that a lineage, which is endemic to the eastern marginal islands (Sakhalin, Hokkaido, and southern Kurils), was produced by the demographic expansion of an ancestral lineage in the Eurasian continent. The most recent common ancestor of the Sakhalin, Hokkaido, and southern Kuril sables was estimated to exist during the Late Pleistocene. We also determined that another lineage exists on Sakhalin and is shared by the Far East Primorsky population. Our results indicate multiple migration events onto Sakhalin from the continent and suggest the importance of the formation of several straits to the distribution of sable lineages. Meanwhile, Kamchatka is dominated by a sole lineage which would also have followed the demographic expansion on the Eurasian continent. The Russian Far East was indicated as the source area for lineage diversifications; in this region, genetic diversity was relatively high, which is consistent with previous studies.