Spatial variation in egg polymorphism among cuckoo hosts across 4 continents

作     者：Canchao Yang Xingfeng Si Wei Liang Anders Pape Moller Canchao YANG;Xingfeng SI;Wei LIANG;Anders Pape MφLLER

作者机构：Ministry of Education Key Laboratory for Tropical Plant and Animal EcologyCollege of Life SciencesHainan Normal UniversityHaikou 571158China Zhejiang Tiantong Forest Ecosystem National Observation and Research StationSchool of Ecological and Environmental SciencesEast China Normal UniversityShanghai 200241China Institute of Eco-Chongming(IEC)Shanghai 202162China Ecologie Systematique EvolutionUniversite Paris-SudCNRSAgroParisTechUniversite Paris-SaclayF-91405 Orsay CedexFrance 

出 版 物：《Current Zoology》 (动物学报（英文版）)

年 卷 期：2020年第66卷第5期

页      面：477-483页

核心收录：

学科分类：0710[理学-生物学] 07[理学] 071002[理学-动物学] 

基　　金：We thank Laikun Ma Tongping Su and Juan Huo for their assistances 

主　　题：avian brood parasitism cuckoo diversity cuckoo host 

摘      要：Although egg color polymorphism has evolved as an effective defensive adaptation to brood parasitism,spatial variations in egg color polymorphism remain poorly ***,we investigated egg polymorphism in 647 host species(68 families and 231 gen era)parasitized by 41 species of Old Word cuckoos(1 family and 11 gen era)across Asia,Europe,Africa,and *** diversity of parasitic cuckoos differs among continents,reflecting the continent-specific intensities of parasitic selection pressure on ***,host egg polymorphism is expected to evolve more frequently on continents with higher cuckoo *** identified egg polymorphism in 24.1%of all host species and 47.6%of all host *** common cuckoo Cuculus canorus utilized 184 hosts(28.4%of all host species).Hosts of the common cuckoo and of Chrysococcyx species were more likely to have polymorphic eggs than hosts parasitized by other *** the number of host species and the host families targeted by the cuckoo species were positively correlated with the frequency of host egg *** host species and most hosts exhibiting egg color polymorphism were located in Asia and *** egg polymorphism was observed less frequently in Australia and *** results also suggested that egg polymorphism tends to occur more frequently in hosts that are utilized by several cuckoo species or by generalist cuckoo *** suggest that selecti on pressure on hosts from a given contin ent in creases proportionally to the number of cuckoo species,and that this selection pressure may,in turn,favor the evolution of host egg polymorphism.