首页|Inter-glacial isolation caused divergence of cold-adapted species: the case of the snow partridge

Inter-glacial isolation caused divergence of cold-adapted species: the case of the snow partridge

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Deciphering the role of climatic oscillations in species divergence helps us understand the mechanisms that shape global biodiversity. The cold-adapted species may have expanded their distribution with the development of glaciers during glacial period. With the retreat of glaciers, these species were discontinuously distributed in the high-altitude mountains and isolated by geographical barriers. However, the study that focuses on the speciation process of cold-adapted species is scant. To fill this gap, we combined population genetic data and ecological niche models (ENMs) to explore divergence process of snow partridge (Lerwa lerwa). Lerwa lerwa is a cold-adapted bird that is distributed from 4,000 to 5,500 m. We found 2 genetic populations within L. lerwa, and they diverged from each other at about 0.40–0.44 million years ago (inter-glacial period after Zhongliangan glaciation). The ENMs suggested that L. lerwa expanded to the low elevations of the Himalayas and Hengduan moun-tains during glacial period, whereas it contracted to the high elevations, southern of Himalayas, and Hengduan mountains during inter-glacial periods. Effective population size trajectory also suggested that L. lerwa expanded its population size during the glacial period. Consistent with our expectation, the results support that inter-glacial isolation contributed to the divergence of cold-adapted L. lerwa on Qinghai-Tibetan Plateau. This study deepens our understanding of how climatic oscillations have driven divergence process of cold-adapted Phasianidae species distrib-uted on mountains.

climate fluctuationsdivergenceQinghai-Tibetan PlateauQuaternarysnow partridge

Hongyan Yao、Yanan Zhang、Zhen Wang、Gaoming Liu、Quan Ran、Zhengwang Zhang、Keji Guo、Ailin Yang、Nan Wang、Pengcheng Wang

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School of Ecology and Nature Conservation,Beijing Forestry University,Beijing,100083,China

Ministry of Education Key Laboratory for Biodiversity Science and Ecological Engineering,College of Life Sciences,Beijing Normal University,Beijing 100875,China

Hangzhou Xi'ao Environmental Science Technique Company Limited,Zhejiang 310011,China

Key Laboratory of Animal Ecology and Conservation Biology,Institute of Zoology,Chinese Academy of Sciences,Beijing 100101,China

Yancheng Wetland and World Natural Heritage Conservation and Management Center,Jiangsu 224000,China

Central South Inventory and Planning Institute of National Forestry and Grassland Administration,Changsha 410014,China

Chinese Institute for Brain Research,Beijing 102206,China

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second National Survey on Terrestrial Wildlife Resources in China

2022

动物学报(英文版)
中国科学院动物研究所,中国动物学会

动物学报(英文版)

CSCDSCI
影响因子：0.198
ISSN：1674-5507
年,卷(期)：2022.68(4)
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