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The roles of calving migration and climate change in the formation of the weak genetic structure in the Tibetan antelope(Pantholops hodgsonii)

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Integrative Zoology 2019年第3期14卷 248-258页

作者： Jiarui CHEN Gonghua LIN Wen QIN Jingyan YAN Tongzuo ZHANG Jianping SU Qinghai Provincial Key Laboratory of Animal Ecological Genomics Northwest Institute of Plateau BiologyChinese Academy of SciencesXiningQinghaiChina University of Chinese Academy of Sciences BeijingChina

Geographical barriers and distance can reduce gene exchange among animals,resulting in genetic divergence of geographically isolated *** Tibetan antelope(Pantholops hodgsonii)has a geographical range of approximately 1600 km across the Qinghai-Tibet Plateau,which comprises a series of tall mountains and big ***,previous studies indicate that there is little genetic differentiation among their geographically delineated *** better understand the genetic structure of *** populations,we collected 145 samples from the 3 major calving regions,taking into consideration their various calving grounds and migration *** used a combination of mitochondrial sequences(Cyt b,ATPase,D-loop and COX I)to investigate the genetic structure and the evolutionary divergence of the ***,albeit weak,genetic differentiation was detected among the 3 geographical *** of the genetic divergence process revealed that the animals gradually entered a period of rapid genetic differentiation approximately 60000 years *** calving migration of *** cannot be the main cause of their weak genetic structure because this cannot fully homogenize the genetic ***,the geological and climatic events as well as the coupling vegetation succession process during this period have been suggested to greatly contribute to the genetic structure and the expansion of genetic diversity.

关键词： calving migration climate change genetic structure Tibetan antelope vegetation succession

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Demographic history of the Tibetan antelope Pantholops hodgsoni(chiru)

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Journal of Systematics and Evolution 2010年第6期48卷 490-496页

作者： 1,2,3Yu-Rong DU 1Song-Chang GUO 4Zhao-Feng WANG 1Hai-Xing CI 1Zhen-Yuan CAI 4Qian ZHANG 1Jian-Ping SU 4Jian-Quan LIU 1(Key Laboratory of Evolution and Adaptation of Plateau Biota,Northwest Institute of Plateau Biology,Chinese Academy of Sciences,Xining 810001,China) 2(Graduate University of the Chinese Academy of Sciences,Beijing 100049,China) 3(School of Life and Geography Science,Qinghai Normal University,Xining 810008,China) 4(Key Laboratory of Arid and Grassland Ecology,School of Life Science,Lanzhou University,Lanzhou 730000,China) (Key Laboratory of Evolution and Adaptation of Plateau Biota Northwest Institute of Plateau Biology Chinese Academy of Sciences Xining 810001 China) (Graduate University of the Chinese Academy of Sciences Beijing 100049 China) (School of Life and Geography Science Qinghai Normal University Xining 810008 China) (Key Laboratory of Arid and Grassland Ecology School of Life Science Lanzhou University Lanzhou 730000 China) *Correspondence: Jian-Ping SU Jian-Quan LIU *Correspondence: ?Authors for correspondence. J-P SU E-mail: sujp@*** Tel.: 86-971-6143748 J-Q LIU E-mail: liujq@*** Tel.: 86-931-8914255.[?]?These authors contributed equally to this work.

The Tibetan antelope(chiru,Pantholops hodgsoni),a heavily poached species and symbol of the QinghaiTibetan Plateau(QTP),is noted worldwide for its special calving *** species originated in the early Quaternary and it is interesting to know how the following climatic oscillations affected its demographic dynamics in the climate-sensitive *** this study,we analyzed the mitochondrial D-loop region from 312 individuals sampled in all of the six major *** found high rates of gene flow and little genetic differentiation between populations,suggesting that the calving migration may have homogenized the genetic pool of this *** mismatch distribution analyses and coalescent simulations suggested that this species experienced a demographic expansion approximately 600-200 Kyr following the retreat of the large glaciers developed in the QTP at 800-600 Kyr,rather than at the end of the last glacial age,as previously suggested,based on a limited sample *** addition,we found evidence of a chiru population decrease probably related to the human settings at the QTP during the middle Holocene.

关键词： chiru calving migration demographic expansion mitochondrial D-loop Quaternary.

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