Lineage Diversification and Niche Evolution in the Chinese Cobra Naja atra (Elapidae)  

作　　者：Xiaming ZHU Guanyan ZHU Shengnan ZHANG Yu DU Yanfu QU Longhui LIN Xiang JI 

机构地区：[1]Hangzhou Key Laboratory for Ecosystem Protection and Restoration,College of Life and Environmental Sciences,Hangzhou Normal University,Hangzhou311121,Zhejiang,China [2]Zhejiang Provincial Key Laboratory for Water Environment and Marine Biological Resources Protection,College of Life and Environmental Sciences,Wenzhou University,Wenzhou 325035,Zhejiang,China [3]Hainan Key Laboratory for Herpetological Research,College of Fisheries and Life Science,Hainan Tropical Ocean University,Sanya 572022,Hainan,China [4]College of Life Sciences,Nanjing Normal University,Nanjing 210023,Jiangsu,China

出　　处：《Asian Herpetological Research》2022年第4期242-250,共9页亚洲两栖爬行动物研究（英文版）

基　　金：supported by grants from the National Natural Science Foundation of China (32071493, 31971414 and 31770443);Finance Science and Technology Project of Hainan Province (ZDYF2018219)

摘　　要：Theroleof nicheevolution(niche conservatism or niche divergence)in lineage diversification is a poorly studied area.The Chinese cobra Naja atra(Elapidae)has diverged into three lineages:Lineage E in eastern China,Lineage S in southern China and Vietnam,and Lineage W in western China.However,whether the ecological niche is conserved or divergent among these three lineages is unknown.In the present study,we used ecological niche models in geographical space to study the ecological differences among lineages.We compared the niche overlap in environmental space to test niche conservatism and niche divergence.Our results showed that the three lineages of N.atra shared an ecological niche space between Lineages E and S/W,with the climatic niches of Lineages S and W representing a specialized fraction of the climatic niche of Lineage E.We speculated that the niche divergence between Lineages S and W was a consequence of geographical barriers limitinggeneflow.Ourstudyprovides evidence for lineage diversification associated with both geographical isolation and climatic niche evolution,suggesting that early niche divergence between Lineages S and W,followed by niche conservatism,causes niche divergence among lineages.

关 键 词：climatic niche ELAPIDAE Naja atra niche conservatism niche divergence 

分 类 号：Q958[生物学—动物学]