Sexual dichromatism and assortative mating by multiple plumage color traits in wild Chestnut Thrush  

作　　者：Yingqiang Lou Lijun Chen Qingshan Zhao Anders Pape Moller Yun Fang Yuehua Sun 

机构地区：[1]Key Laborafory of Aninal Ecology and Conservation Biology,Institufe of Zoology Chinese Academy of Sciences,Beijing 100101 China [2]state Key Laboratory of Urban and Regional Ecology,Research Center for Eco-Ervironmental Sciences Chinese Academy of Sciences,Beijing 100085,China [3]Ecologie Systematique Evoluution,Universite Paris Sud CNRS,AgroParisTech,UniversitéParis-Saclay,F-91405,Oray Cedex,France

出　　处：《Avian Research》2022年第2期165-169,共5页鸟类学研究（英文版）

基　　金：supported by the National Natural Science Foundation of China(No.32070452to YS)。

摘　　要：Sex differences in plumage color are common in bird species.Some bird species are regarded as sexually monochromatic in human visual systems,and in recent years,some species are found to be of cryptic(to human)sexual dichromatism by spectrophotometric techniques.However,the functions of plumage color are still less understood in these species.Here,we focused on plumage color traits in the Chestnut Thrush(Turdus rubrocanus),which is considered as a sexually monochromatic bird by human observers.We used spectrometer analyses and avian visual modeling to investigate the color traits of males and females,and whether these color traits are involved in assortative mating.We found that Chestnut Thrush showed sexual dichromatism in bill,throat and wing,and pairs mated assortatively with colorations of throat,chest,crown and wing.We also found that color of tarsus was different between two consecutive years.These results revealed that Chestnut Thrush is sexually dichromatic in the avian visual system,and plumage color traits play important roles in mate choice.

关 键 词：Assortative mating Avian vision Plumage coloration Sexual selection 

分 类 号：Q958.1[生物学—动物学]