Differently sized cuckoos pose different threats to hosts

查看全文 作　　者：Jiangping [1,2]YU;Mingju [3]E;Wei [2]SUN;Wei [4]LIANG;Haitao [1]WANG;Anders Pape [5,6]MΦLLER

机构地区：[1]jilin Engineering Laboratory for Avian Ecology and Conservation Genetics,School of Life Sciences,Northeast Normal University,Changchun 130024,China;[2]Ministry of Education Key Laboratory of Vegetation Ecology,School of Life Sciences,Northeast Normal University,Changchun 130024,China;[3]Jilin Provincial Key Laboratory of Animal Resource Conservation and Uilization,School of Life Sciences,Northeast Normal University,Changchun 130024,China;[4]Ministry of Education Key Laboratory for Ecology of Tropical Islands,College of Life Sciences,Hainan Normal University,Haikou 571158,China;[5]Ecologie Systematique Evolution,Universite Paris-Sud,CNRS,AgroParis Tech,Universite Paris Saclay,Orsay Cedex F-91405,France;[6]Ministry of Education Key Laboratory for Biodiversity Science and Ecological Engineering,Collge of Life Sciences,Beiing Normal University,Beijing 100875,China

出　　处：《Current Zoology》索引2020年第66卷第3期,共7页

基　　金：the National Natural Science Foundation of China(Nos.31770419 and 31470458 to H.W.,31772453 and 31970427 to W.L.);the Open Project Program of Jilin Provincial Key Laboratory of Animal Resource Conservation and Utilization(130028823);the Fundamental Research Funds for the Central Universities(2412018QD009);the Project funded by China Postdoctoral Science Foundation(2018M631854). 摘　　要：Hole-nesting tits Parus spp.have been classified as'unsuitable'hosts for cuckoo parasitism because cuckoos cannot enter a cavity if the entrance is too small.However,Chinese tits could re-ject alien eggs and egg ejection rate increased with the local diversity of parasitic cuckoo species.Antiparasitic behavior among Chinese tits may have evolved due to greater size variation among sympatric cuckoo species.This raises the question of whether differently sized parasitic cuckoos pose different threats to Chinese tits.A green-backed tit Parus monticolus population that is sym-patric with Asian emerald cuckoo Chrysococcyx maculatus(eme-cuckoo,small-sized parasite)and common cuckoo Cuculus canorus(com-cuckoo,large-sized parasite),and a cinereous tit P.cinereus population that is only sympatric with com-cuckoo were chosen as study organisms.We observed behavioral response and recorded alarm calls of the 2 tit species to eme-cuckoo,com-cuckoo,chipmunk Tamias sibiricus(a nest predator)and dove Streptopelia orientalis(a harm-less control),and subsequently played back alarm calls to conspecific incubating females.In dummy experiments,both tit species performed intense response behavior to chipmunk,but rarely responded strongly to the 3 avian species.In playback experiments,both tit species responded strongly to conspecific chipmunk alarm calls,but rarely responded to dove alarm calls.The inten-sity of response of incubating female green-backed tits to eme-cuckoo and com-cuckoo alarm calls were similar to that of chipmunk alarm calls,while the intensity to eme-cuckoo alarm calls was higher than the intensity to dove alarm calls which was similar to that of com-cuckoo alarm calls.In contrast,few female cinereous tits responded to eme-cuckoo and com-cuckoo alarm calls.These findings indicated that the threat level of eme-cuckoo was slightly greater than that of com-cuckoo for sympatric green-backed tits,but not for allopatric cinereous tits. 关键词：body size cinereous tit cuckoo parasitism green-backed tit play-back sympatry with multiple cuckoo species

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Differently sized cuckoos pose different threats to hosts

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