Why do brood parasitic birds lay strong-shelled eggs?
为什么寄生性繁殖的鸟类产厚壳卵?(英文)作者机构：挪威科技大学生物学系 热带动植物生态学省部共建教育部重点实验室海南师范大学生命科学学院海口571158 法国巴黎第十一大学生态与系统进化实验室
出 版 物：《Chinese Birds》 (中国鸟类（英文版）)
年 卷 期：2012年第3卷第4期
页 面：245-258页
基 金：supported by National Natural Science Foundation of China (Nos.31071938 to AA,BGS and WL,31272328 to WL,31101646 and 31260514 to CY) Program for New Century Excellent Talents in University (NCET-10-0111 to WL) BGS and FF were funded by the Research Council of Norway (218144)
主 题：brood parasites cowbirds cuckoos ejection behavior strong eggshells
摘 要：Brood parasitic birds constitute a model system for the study of *** parasites are unique by having evolved unusually thick eggshells for their body *** eggshells have been hypothesized to evolve as 1) a means of preventing damage to parasite eggs when the brood parasite lays its egg at a distance from the host clutch(the laying damage hypothesis);2) a consequence of host puncture ejection(the puncture resistance hypothesis);3) a means for the brood parasite to allocate calcium to development of a disproportionately large skeleto-muscular system in evicting parasite chicks(the chick vigour hypothesis);or 4) a means of protecting the cuckoo embryo from microorganisms in the nest of the host(the anti-bacterial protection hypothesis).Here we review the literature studying the evolutionary mechanisms promoting thick eggshells in avian brood parasites,and provide proposals for future studies to test their *** data are insu cient to rigorously test exclusive predictions and assumptions of these not necessarily exclusive hypotheses,although the laying damage and the puncture resistance hypotheses seem to currently be the most well supported *** discuss how quanti cation of rejection modes(grasp ejection,puncture ejection and desertion) may disclose the validity of the puncture resistance hypothesis,and nally we provide perspectives for future research on testing this speci c hypothesis.
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