大杜鹃寄生白鹡鸰巢的实际案例

A Parasitism Case of the White Wagtail(Motacilla alba)Nest From Common Cuckoo(Cuculus canorus)

目前,众多寄生性杜鹃里,大杜鹃(Cuculus canorus)的宿主种类最多,白鹡鸰(Motacilla alba)作为其中的宿主之一,尚未发现其寄生巢、卵的相关数据。2019—2021年,通过在贵州六枝地区搜索并记录白鹡鸰巢的方法,收集白鹡鸰相关数据,以了解白鹡鸰巢址情况及基础繁殖参数,并于2020年6月16日在白鹡鸰巢中首次发现大杜鹃的寄生卵。通过模型卵识别实验,检测白鹡鸰卵识别能力,拒绝率较高,表明白鹡鸰可能已具备识别并拒绝外来卵的能力。对大杜鹃寄生巢及卵的记录,补充了大杜鹃—白鹡鸰寄生系统中寄生卵相关数据的空缺,初步了解该寄生系统中大杜鹃卵的模拟程度。

Among the many parasitic cuckoos,common cuckoo(Cuculus canorus)has the most host species,and the white wagtail(Motacilla alba)is one of them.However,the relevant data of their parasitic nests and eggs have not been reported.From 2019 to 2021,we conducted a survey for white wagtail nests and collected the white wagtail breeding data in Liuzhi area,Guizhou Province,which helped us to better understand site selection for nest and to acquire basic breeding parameters.In addition to that,the parasitic eggs of common cuckoo were found in white wagtail nests for the first time on June 16,2020.And through a recognition experiment using model eggs to detect the recognition ability of white wagtail,the rejection rate was relatively high,indicating that white wagtail is capable of recognizing and rejecting foreign eggs.The records of the parasitic nests and eggs of the common cuckoo,have filled the knowledge gaps which are related to the parasitic eggs of the common cuckoo and white wagtail parasitic system,and also provide a preliminary understanding of the common cuckoo eggs in the parasitic system.