Abstract—

Natal dispersal of young common shrews (Sorex araneus) was studied in field conditions in the southern part of Tver oblast, in central European Russia. Total individual marking of shrews was conducted over an area of 22 ha. The places of birth of the young were determined by the home ranges of relative overwintered females. The animals were genotyped by ten microsatellite loci: L62, L68, L45, C117, L69, C5, B30, D106, D103, and D138. Family analysis was carried out using the Cervus 3.07 software. In 2013, with the population density in October being 6.5 individuals/ha, 33 mother‒pup dyads were identified for 229 yearlings and 20 females. The share of yearlings born within the study area was 14.8%, while the core of the population consisted of animals that had arrived from outside the plot. In 2014, with the population density in October reaching only 2.6 individuals/ha, nine mother‒pup dyads were found for 58 yearlings and nine mature females. The share of the animals born within the plot boundaries was 15.5%. Within the plot, dispersal from the natal ranges varied from 0 to 610 m, Me = 224, in 2013, and from 45 to 410 m, Me = 297, in 2014. The data obtained fail to confirm a meaningful year-to-year difference. Taking into account the corrections for the proportion of territory under control, the majority of young animals appear to have dispersed over a range of more than 400 m both during the high fall population density and during its decrease the next year.

中文翻译：

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从纳塔尔山脉散布幼小的普通S（Sorex araneus）

摘要—

年轻的普通sh的纳塔尔扩散（Sorex araneus）是在俄罗斯中欧特维尔州南部的田间条件下进行研究的。sh的总个体标记在22公顷的区域内进行。年轻人的出生地由相对越冬的女性的家庭范围决定。通过十个微卫星基因座对动物进行基因分型：L62，L68，L45，C117，L69，C5，B30，D106，D103和D138。使用Cervus 3.07软件进行家族分析。2013年，十月份的人口密度为6.5个人/公顷，确定了229羽一岁鸽的33羽母双胞胎和20羽雌鸽的双胞胎。研究区域内出生的一岁鸽的比例为14.8％，而人口的核心则是从该地块外抵达的动物。2014年，十月份的人口密度仅为2.6个人/公顷，发现58羽一岁鸽有9羽幼犬双胞胎，9羽成年雌鸽。在地块范围内出生的动物所占比例为15.5％。在该地块内，从出生地开始的散布范围从0到610 m，2013年，Me = 224；2014年，Me = 45至410 m，Me =297。获得的数据未能证实有意义的逐年差异。考虑到对受控区域比例的校正，在高人口下降密度及其次年下降期间，大多数幼小的动物似乎分布在400 m以上的范围内。