Abstract

Microsatellite analysis was used to examine intraspecific polymorphism in two extensive continental isolates of the striped field mouse (Apodemus agrarius Pallas, 1771) separated by the Baikal disjunction. Striped field mice from the western isolate (from the European and Kazakh-Siberian parts of the range) and from the eastern isolate (from the territory of the Middle Amur Region and Coastal Territory of Far East) were tested. The analysis used 180 specimens collected from 33 localities and five microsatellite loci developed earlier for the genus Apodemus. The work was carried out based on the summation of local samples in each of the aforementioned geographical regions. It was shown that allelic diversity and the number of specific alleles were higher in the eastern isolate that may be the result of the longer habitation of the striped field mouse in the eastern part of the range. The limited number of specific alleles in the western isolate as compared to the eastern one can be determined by the founder effect and may reflect the direction of the historical migration of the species from east to west. Our results demonstrate no more than a population level of differentiation within the continental isolates of the striped field mouse and indicate no more than a subspecies level of differences between these isolated forms, i.e., the relatively recent penetration of A. agrarius to western Eurasia.

中文翻译：

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微卫星基因座区分条纹田鼠的大陆分离株（Apedemus agrarius Pallas，1771）

摘要

微卫星分析被用来检查由贝加尔氏分离法分离的条纹田鼠（Apodemus agrarius Pallas，1771）的两个广泛的大陆分离物中的种内多态性。测试了来自西部隔离区（来自欧洲和哈萨克-西伯利亚地区）和东部隔离区（来自中阿穆尔州地区和远东沿海地区）的条纹田鼠。该分析使用了从33个地方收集的180个标本和较早开发的姬鼠属的5个微卫星基因座。该工作是基于上述每个地理区域中本地样本的总和而进行的。结果表明，东部分离株的等位基因多样性和特定等位基因的数量较高，这可能是该条纹东部小鼠在该区域东部居住时间更长的结果。与东部分离株相比，西部分离株中特定等位基因数量有限，可以通过创始人效应确定，并且可以反映该物种从东向西迁移的历史方向。我们的结果表明，条纹田鼠大陆分离物中的分化水平不超过种群，并且这些分离形式之间的差异也就是亚种水平，即相对较近的穿透性。Agrarius到欧亚大陆西部。