Geographical variation of the acoustic signals in the spot-legged treefrog (Polypedates megacephalus) of Hainan Island  

作　　者：Longhui ZHAO Qiucheng LIU Yuanyu QIN Xiaofei ZHAI Feiyun TU Tongliang WANG Jichao WANG 

机构地区：[1]Ministry of Education Key Laboratory for Ecology of Tropical Islands,Key Laboratory of Tropical Animal and Plant Ecology of Hainan Province,College of Life Sciences,Hainan Normal University,Haikou,China

出　　处：《Integrative Zoology》2023年第4期772-781,共10页整合动物学（英文版）

基　　金：supported by the Natural Science Foundation of Hainan Province(2019RC175);the Postdoctoral Research Program in Hainan Province(RC2100004064);the Academician working platform project in Hainan Province.

摘　　要：Geographical divergence in acoustic signals is often affected by multiple selective pressures.Environmental factors are expected to shape signals by adjusting for greater propagation efficiency.Nevertheless,such habitat-driven hypotheses have not been well-examined with multi-signal and multi-habitat types included simultaneously.In this study,we evaluated call similarity of the spot-legged treefrog(Polypedates megacephalus),characterized by multiple call types,from 11 geographic populations across Hainan Island.We also examined multiple factors(i.e.body mass,temperature,altitude,and vegetation)among different acoustical geographic clusters,and tested whether the variation in acoustic length and frequency among different habitats was in accordance with the predic-tion derived from the acoustic adaptation hypothesis.We showed that P.megacephalus from Hainan Island included 3 acoustic geographic clusters:the northeasternflatlands,the southwest mountains,and the hills around the moun-tains.We also showed that environmental factors(i.e.altitude and vegetation)varied across these 3 acoustically distinct areas.Moreover,the duration of the different call types supported the hypothesis that they should have opti-mal transmission in their own habitats.Thus,our results reveal the roles of ecological selection in the geographical divergence of anuran acoustic signals.

关 键 词：acoustic adaptation hypothesis ANURAN call similarity ecological selection geographical divergence 

分 类 号：O42[理学—声学]