Moscow State University, Moscow, Russia.
Institute of Systems Biology and Medicine, Federal Service for Oversight of Consumer Protection and Welfare, Moscow, Russia.
Dokl Biol Sci. 2023 Apr;509(1):128-134. doi: 10.1134/S0012496623700308. Epub 2023 May 19.
Multilocus analysis was for the first time used to study the phylogeny of the Crocidura suaveolens s. l. species complex. Sequencing data for 16 nuclear genes indicated that several distinct forms exist within the species complex. The structure of the complex did generally not contradict its mitochondrial phylogeny. Siberian shrew showed certain specificity of the nuclear genome, but the degree of its genetic differentiation did not correspond to the species level. Relationships of Crocidura aff. suaveolens from South Gansu and Sichuan with other forms of the species complex were clarified. Shrews from Buryatia and Khentei also belong to this form, but their mtDNA apparently introgressed from C. shantungensis in the past. Hybridization of C. suaveolens s. str. with C. aff. suaveolens and C. güeldenstaedtii occurred recently. Due to multiple introgression events in the history of C. suaveolens s. l., a far larger set of loci is necessary for the analysis of the phylogenetic relationships between its forms.
多基因座分析首次被用于研究长尾鼩鼱属复合体的系统发育。16 个核基因的测序数据表明，该种复合体中存在几种不同的形式。复合体的结构通常与线粒体系统发育不一致。西伯利亚鼩鼱显示出核基因组的某些特异性，但遗传分化程度与物种水平不对应。澄清了来自甘肃南部和四川的长尾鼩鼱属aff. suaveolens 与种复合体中其他形式的关系。来自布里亚特和肯泰的鼩鼱也属于这种形式，但它们的 mtDNA 显然是过去从山东鼩鼱中渗入的。长尾鼩鼱种与其 aff. suaveolens 和 C. güeldenstaedtii 的杂交是最近发生的。由于长尾鼩鼱属种复合体的历史上存在多次基因渗入事件，因此需要更多的基因座来分析其种间的系统发育关系。
