Small-scale genetic structural analysis of plateau zokor (Eospalax baileyi)

doi:10.11686/cyxb2017068

Abstract

Abstract: The plateau zokor is a subterranean rodent that is one of the unique native animals living on the Tibetan Plateau. Research on the genetic structure of zokor will be useful to understand its patterns of dispersal and genetic exchange. In this study, we focused on the genetic structure of four plateau zokor populations in the alpine meadow in the eastern Qilian Mountains in northwest China. We used microsatellite marker technology to study the genetic diversity and structure of these populations. The effective alleles (Ne) value was 83.6 in the four different geographic populations. The highest average observed heterozygosity (Ho) value was 0.32, and the expected heterozygosity (He) value was 0.50. The average polymorphism information content (PIC) value was 0.40, indicating that plateau zokor have medium-level genetic diversity. A genetic structure analysis divided the four populations into two groups; one group containing the MYT (Mayingtan) population; and the other group containing XNG (Xianannigou), MYR, and MYL populations (west and east of the Maying river, respectively). The genetic distance (F_ST) values were greater than 0.05 and gene flow values were lower than 1 in the four geographical populations. These results indicated that the island-type habitat has limited genetic exchange among plateau zokor populations. Rivers and roads may have restricted the movement and exchange of individuals among and within populations.

LIU Li, WANG Gui-zhen, ZHOU Yan-shan, CHU Bin, MA Su-jie, JI Cheng-peng, TIAN Yong-liang, HUA Li-min. Small-scale genetic structural analysis of plateau zokor (Eospalax baileyi)[J]. Acta Prataculturae Sinica, 2018, 27(1): 123-130.

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