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Genetic diversity in Siberian flying squirrel ( Pteromys volans ) in its western frontier with a focus on the Estonian population
Mammal Research ( IF 1.5 ) Pub Date : 2020-06-20 , DOI: 10.1007/s13364-020-00509-8
Grete Nummert , Anu Aaspõllu , Kristiina Kuningas , Uudo Timm , Ilpo K. Hanski , Tiit Maran

The Siberian flying squirrel population is experiencing a continuous decline in Estonia and Finland. Hence, the flying squirrel is listed in Annexes II and IV of the EU Habitat directive and is regarded as a priority species for protection by the European Community. So far, only a limited number of genetic studies have been conducted on this species—all using invasively collected tissue samples and most focusing on the Finnish population only. Our aim was to describe the genetic diversity of the Estonian flying squirrel population and its relatedness to the nearest populations from Finland and Karelia by using, for the first time, non-invasively collected faecal samples. Based on mitochondrial markers’ analysis, the Estonian population appeared more homogenous in comparison with the other two populations. Mitochondrial markers did not reveal essential genetic dissimilarities between Estonian, Finnish, and Karelian populations as they all shared the same mitochondrial haplotypes. Combined data from both mitochondrial and microsatellite markers indicated that the flying squirrel population in Estonia is genetically less diverse compared with the other populations. Finally, signs of inbreeding and heterozygote deficiency were detected in the Estonian flying squirrel population.

中文翻译:

西伯利亚飞鼠(Pteromys volans)在其西部边境的遗传多样性,重点是爱沙尼亚人口

在爱沙尼亚和芬兰,西伯利亚飞鼠的数量持续下降。因此,松鼠被列入欧盟人居指令附件二和附件四,并被欧共体视为优先保护物种。到目前为止,仅对该物种进行了有限数量的遗传研究-全部使用侵入性收集的组织样本,并且大多数只针对芬兰种群。我们的目的是通过首次使用无创收集的粪便样本来描述爱沙尼亚飞鼠种群的遗传多样性及其与最近的芬兰和卡累利阿种群的相关性。根据线粒体标记的分析,与其他两个种群相比,爱沙尼亚种群显得更加同质。线粒体标记没有揭示爱沙尼亚语,芬兰语和卡累利阿语人口之间的本质遗传差异,因为它们都共享相同的线粒体单倍型。来自线粒体和微卫星标记的综合数据表明,与其他种群相比,爱沙尼亚的飞鼠种群在遗传上没有那么多。最后,在爱沙尼亚飞鼠种群中发现了近交和杂合子缺乏的迹象。
更新日期:2020-06-20
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