Egg rejection and egg recognition mechanism in a Chinese Azure-winged Magpie(Cyanopica cyanus)population  

作　　者：Jianping Liu Longwu Wang Wei Liang 

机构地区：[1]College of Biological Sciences and Engineering,North Minzu University,Yinchuan 750021,China [2]School of Life Sciences,Guizhou Normal University,Guiyang 550001,China [3]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

出　　处：《Avian Research》2023年第3期487-491,共5页鸟类学研究（英文版）

基　　金：funded by Key R&D projects in Ningxia (talent introduction project,2021BEB04015);Fundamental Research Funds for Central Universities,North Minzu University (2021KYQD05);supported by the National Natural Science Foundation of China (Nos.32160242 to JL,31960105 and 32260253 to LW,31970427 and32270526 to WL);supported by the specific research fund of The Innovation Platform for Academicians of Hainan Province

摘　　要：Recognition and rejection of foreign eggs are effective defense of hosts against brood parasitism.However,brood parasitism can impose various selection pressures on different geographic populations of the same host species.In a multiple cuckoo system in China,Azure-winged Magpies(Cyanopica cyanus)are parasitized by both Indian Cuckoos(Cuculus micropterus)and Asian Koels(Eudynamys scolopaceus).In this study,egg recognition ability and recognition mechanism of the Azure-winged Magpie were investigated using a population in Fusong,southeastern Jilin,China.The results showed that 55.6%(20/36)of the Azure-winged Magpies correctly rejected quail(Coturnix japonica)eggs in their nests,while 13.9%(5/36)of the individuals experienced rejection costs by wrongly rejecting their own eggs.Azure-winged Magpies could accurately reject the experimental eggs when the number of such eggs in the nests was the same as that of the magpie eggs.However,Azure-winged Magpies do not recognize and reject conspecific eggs(0/28).The present study indicates that the Azure-winged Magpie has moderate egg recognition ability toward non-mimetic quail eggs and shows a true recognition mechanism with rejecting foreign eggs by accurately recognizing their own eggs.However,they cannot recognize conspecific eggs.

关 键 词：Azure-winged Magpie Cuckoo parasitism Egg rejection Recognition error True recognition 

分 类 号：Q958[生物学—动物学]