Poplavskaya N S, Bannikova A A, Fang Y, Sheftel B I, Ushakova M V, Surov A V, Lebedev V S
Severtsov Institute of Ecology and Evolution, Russian Academy of Sciences, Moscow, 119071, Russia.
Moscow State University, Moscow, 119991, Russia.
Dokl Biol Sci. 2018 Mar;479(1):70-73. doi: 10.1134/S0012496618020102. Epub 2018 May 22.
First data on morphological and mitochondrial variation in the long-tailed hamster Cricetulus longicaudatus is presented. In contrast to genetically monomorphic populations of Mongolia and Tuva, the northeastern part of the Qinghai-Tibetian Plateau was found to harbor several divergent mtDNA lineages. This pattern suggests a recent expansion of the long-tailed hamster to the northern part of its recent range, which started from Tibet, presumably, in the late Middle Pleistocene. Several populations from the northern edge of the species range were found to be morphologically but not genetically distinct. The apparent disagreement between genetic and morphological data can be explained by rapid morphological evolution in peripheral isolates.
首次呈现了长尾仓鼠（Cricetulus longicaudatus）形态和线粒体变异的相关数据。与蒙古和图瓦遗传上单一形态的种群不同，青藏高原东北部被发现存在几个不同的线粒体DNA谱系。这种模式表明长尾仓鼠近期从西藏开始，大概在中更新世晚期向其当前分布范围的北部扩张。该物种分布范围北缘的几个种群在形态上有差异，但在基因上并无不同。遗传数据和形态数据之间明显的不一致可以通过边缘隔离种群中快速的形态进化来解释。
