Species identification of sympatric cuckoo nestlings in a multiple-cuckoo system,China  

中国多杜鹃寄生系统中同域分布的杜鹃雏鸟的鉴别(英文)

作　　者：杨灿朝[1,2] 蔡燕[1] 梁伟[1] 

机构地区：[1]海南师范大学生命科学学院,热带动植物生态学省部共建教育部重点实验室,海口571158 [2]中山大学生命科学学院,生物控制国家重点实验室,广州510275

出　　处：《Chinese Birds》2012年第2期108-112,共5页中国鸟类（英文版）

基　　金：supported by the National Natural Science Foundation of China (No. 31071938, 31101646);the Key Project of the Chinese Ministry of Education (No. 212136);the Program for New Century Excellent Talents in University(NCET-10-0111)

摘　　要：Interaction between a parasite and its host could lead to a co-evolutionary arms race. Cuckoo-host system is among the most studied of all brood parasite systems, but the cuckoos of Asia, on the other hand, are much less well known. China has the most abundant cuckoo species in Asia. Many of these co-occur in sympatric areas, posing a potential risk of mis-identification of cuckoo nestlings, especially in Cuculus species. In this study we have provided a practical criterion to identify cuckoo nestlings species in the field and performed molecular phylogeny to confirm our empirical results. These results indicate that two distinct characteristics of cuckoo nestlings, i.e., the gape color pattern and feather traits can be considered as reliable species identification. To our knowledge, this is the first report for species identification of Cuculus nestlings through molecular analysis.寄生者与宿主之间可形成一种类似军备竞赛的协同进化关系。杜鹃与其宿主之间的协同进化是迄今研究最多的一个寄生系统,但人们对亚洲杜鹃的了解却知之甚少。中国是亚洲寄生性杜鹃种类最丰富的国家,多种杜鹃鸟类,特别是形态非常相似的 Cuculus属杜鹃同域分布于某一地区,给杜鹃雏鸟的种类鉴别带来很大困难。这种情况在欧洲不存在,因为Cuculus属杜鹃在欧洲仅1种,即大杜鹃(Cuculus canorus)。本研究对同域繁殖于中国境内、外部形态特征非常相似的4种Cuculus属杜鹃,即大杜鹃、中杜鹃(C. saturatus)、小杜鹃(C.poliocephalus)和四声杜鹃(C. micropterus)雏鸟的重要形态鉴别特征进行了比较,并进一步通过采集雏鸟血样进行DNA分析加以确认。结果表明,Cuculus属4种杜鹃的雏鸟可通过嘴裂和羽毛两个重要形态特征加以区分。这是关于Cuculus属杜鹃雏鸟分子鉴定的首次报道。

关 键 词：avian brood parasitism species identification cuckoo nestling GAPE cytochrome b 

分 类 号：Q958[生物学—动物学]