Coevolution between Himalayan cuckoos and 2 sympatric Pycnonotidae hosts  

作　　者：Canchao YANG Qihong LI Tongping SU Anders Pape MøLLER Wei LIANG 

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,571158,China [2]Key Laboratory of Beibu Gulf Environment Change and Resources Utilization of Ministry of Education,Nanning Normal University,Nanning,530001,China [3]Ecologie Systématique Evolution,UniversitéParis-Sud,CNRS,AgroParisTech,UniversitéParis-Saclay,Orsay Cedex,F-91405,France [4]Ministry of Education Key Laboratory for Biodiversity Science and Ecological Engineering,College of Life Sciences,Beijing Normal University,Beijing,100875,China

出　　处：《Current Zoology》2021年第6期639-644,共6页动物学报（英文版）

基　　金：supported by the Hainan Provincial Natural Science Foundation of China(320CXTD437 to C.Y.);the National Natural Science Foundation of China(Nos.31672303 to C.Y.,31772453 and 31970427 to W.L.)。

摘　　要：Selection due to cuckoo parasitism is responsible for the evolution of anti-parasitism defenses in hosts.Different host species breeding sympatrically with a single parasitic cuckoo may evolve different strategies to reduce the risk of counter cuckoo parasitism,resulting in different interactions between cuckoos and hosts in areas of sympatry.Here,we studied the coevolutionary interactions between Himalayan cuckoos Cuculus saturatus and 2 sympatric and closely related potential hosts belonging to the family Pycnonotidae,the brown-breasted bulbul Pycnonotus xanthorrhous and the collared finchbill Spizixos semitorques.We investigated parasitism rates and nest-site selection(nest height,nest cover,human disturbance,perch height,forest distance,and degree of concealment)related to parasitism risk,nest defense against a cuckoo dummy,and egg rejection against cuckoo model eggs.Bulbuls used specific nest sites that were further away from forests than those of finchbills,and they behaved more aggressively toward cuckoos than finchbills.In contrast,bulbuls possessed moderate egg rejection ability,whereas the finchbill rejected 100%of cuckoo model eggs.We suggest that selection of a nest site away from forests by the bulbul explains the absence of parasitism by Himalayan cuckoos.We suggest that these interspecific differences in nest-site selection and nest defense indicate alternative responses to selection due to cuckoos.

关 键 词：Cuculus saturatus distance to forest parasitism risk Pycnonotus xanthorrhous Spizixos semitorques 

分 类 号：Q95[生物学—动物学]