Mitochondrial DNA variation and population structure of the yarkand hareLepus yarkandensis |
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Authors: | Zengchao Li Lin Xia Yiming Li Qisen Yang Mengyuan Liang |
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Institution: | (1) College of Life Sciences and Technology, Xinjiang University, Urumqi, 830046, China;(2) Laboratory for Conservation and Utilization of Bio-resource & Key Laboratory for Microbial Resources of the Ministry of Education, Yunnan University, Kunming, 650091, China;(3) State Key Laboratory of Genetic Resources and Evolution, Kunming Institute of Zoology, Kunming, 650223, China;(4) Centre for Biodiversity and Conservation Biology, Royal Ontario Museum, Ontario, M5S 2C6, Canada; |
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Abstract: | The yarkand hareLepus yarkandensis Günther, 1875 is one of the endemic mammals in China. We used mitochondrial control region (D-loop) sequences to investigate
the genetic variation, population structure and phylogeography of the Yarkand hare from Xinjiang Uighur Autonomous Region.
The Yarkand hare holds a high level of haplotype diversity in most populations. In contrast, we found a relatively low level
of gene diversity in Niya and Shule populations. The pairwise mismatch distribution suggested a pattern of population expansion.
Fu’s test of neutrality was significant for the total population (F
s=−10.458), which also suggested a recent population expansion. The pattern of diversification among populations was not consistent
with its geographic distributions. Significant divergence was found among some populations, however, no significant divergence
among other populations. The results indicate some degree of dispersal of individuals may exist among populations in recent
history. Due to past isolation and habitat fragmentation, genetic variation was reduced within populations and division among
populations increased. In order to conserve genetic diversity of the Yarkand hare in isolated populations, in the future,
it may be advisable to translocate individuals between isolated populations to maintain current levels of genetic variation. |
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