摘要
2009年至2012年期间,在甘肃莲花山自然保护区共发现91个白腹短翅鸲(Hodgsonius phaenicuroides)巢,其中15巢被大杜鹃(Cuculus canorus)寄生,寄生率为16.48%。根据对13枚寄生的大杜鹃卵的观察,其中12枚卵色为浅蓝色,与白腹短翅鸲的深蓝绿色卵差异明显,仅1枚与白腹短翅鸲卵色一致。大杜鹃与白腹短翅鸲的卵重(t=11.208,df=38,P<0.001)和卵短径(t=0.970,df=38,P<0.001)差异极显著。白腹短翅鸲具有识别大杜鹃卵的能力,15巢中只有4巢接受寄生卵并继续孵化,7巢成功识别,剩余4巢无法确定是否识别。白腹短翅鸲为雌鸟单独孵卵,推测识别大杜鹃卵可能只与雌鸟有关。
Fifteen nests of White-bellied Redstart （Hodgsonius phaenicuroides） been parasitized by Common Cuckoo （Cuculus canorus） were found during the breeding season from 2009 to 2012 at Lianhuashan Nature Reserve, Gansu province, with a parasitism rate of 16.48%. To the human eye, 12 out of 13 eggs of Common Cuckoo were slightly blue in color and were different from the dark bluish green eggs of White-bellied Redstart, except one matched very well. The mean weight of Common Cuckoo eggs was 3.76 ±0. 16 g, with an average long axis of 22. 19 ±0.52 mm and an average short axis of 17.62±0. 47 mm （n = 10） , respectively. There were significant differences in weight of eggs （ t = 11. 208, df = 38, P 〈 0. 001 ） and short axis of eggs （ t = 0. 970, df = 38, P 〈 0. 001 ） between Common Cuckoo and White-bellied Redstart. Our research showed White-bellied Redstart can recognize eggs of Common Cuckoo, 7 nests were confirmed deserted after being parasitized and 4 nests accepted while the remaining 4 were unknown.
出处
《动物学杂志》
CAS
CSCD
北大核心
2013年第5期769-773,共5页
Chinese Journal of Zoology
基金
国家自然科学基金项目(No.31270468)
关键词
大杜鹃
巢寄生
白腹短翅鸲
卵识别
Cuculus canorus
Brood Parasitism
Hodgsonius phaenicuroides
Egg recognition
