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Comparative phylogeography reveals dissimilar genetic differentiation patterns in two sympatric amphibian species

Pan, Tao, Zhang, Caiwen, Orozco Ter wengel, Pablo ORCID:, Wang, Hui, Ding, Ling, Yang, Liuyang, Hu, Chaochao, Li, Wengang, Zhou, Wenliang, Wu, Xiaobing and Zhang, Baowei 2023. Comparative phylogeography reveals dissimilar genetic differentiation patterns in two sympatric amphibian species. Integrative Zoology 10.1111/1749-4877.12764
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Global climate change is expected to have a profound effect on species distribution. Due to the temperature constraints, some narrow niche species could shift their narrow range to higher altitudes or latitudes. In this study, we explored the correlation between species traits, genetic structure, and geographical range size. More specifically, we analyzed how these variables are affected by differences in fundamental niche breadth or dispersal ability in the members of two sympatrically distributed stream-dwelling amphibian species (frog, Quasipaa yei; salamander, Pachyhynobius shangchengensis), in Dabie Mountains, East China. Both species showed relatively high genetic diversity in most geographical populations and similar genetic diversity patterns (JTX, low; BYM, high) correlation with habitat changes and population demography. Multiple clustering analyses were used to disclose differentiation among the geographical populations of these two amphibian species. Q. yei disclosed the relatively shallow genetic differentiation, while P. shangchengensis showed an opposite pattern. Under different historical climatic conditions, all ecological niche modeling disclosed a larger suitable habitat area for Q. yei than for P. shangchengensis; these results indicated a wider environment tolerance or wider niche width of Q. yei than P. shangchengensis. Our findings suggest that the synergistic effects of environmental niche variation and dispersal ability may help shape genetic structure across geographical topology, particularly for species with extremely narrow distribution.

Item Type: Article
Date Type: Published Online
Status: In Press
Schools: Biosciences
Publisher: Wiley
ISSN: 1749-4877
Date of First Compliant Deposit: 6 November 2023
Date of Acceptance: 25 October 2023
Last Modified: 08 Nov 2023 02:45

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