The analysis of common cuckoo's egg shape in relation to its hosts' in two geographically distant areas
The analysis of common cuckoo's egg shape in relation to its hosts' in two geographically distant areas
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DOI：
10.1111/j.1469-7998.2011.00795.x
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发表时间：
2011-06-01
影响因子：
2
通讯作者：
Moskat, C.
中科院分区：
文献类型：
--
作者：
Ban, M.;Barta, Z.;Moskat, C.
普通杜鹃需要进化适应来匹配宿主卵。寄生虫可能会歧视外来卵;因此，寄生虫卵与宿主卵的准确匹配是必不可少的。蛋的形状是研究最少的模仿蛋的组成部分，它也可能有其他功能：一个最佳的蛋的形状是必要的有效孵化。出于这个原因，布谷鸟卵可能会对一组宿主物种表现出广泛的形状变化。在这里，我们比较杜鹃和主机蛋使用鸡蛋形状参数在两个遥远的地区：从巢的伟大的芦苇莺Acrocephalus arundinaceus，知更鸟Erithacus rubecula和沼泽莺Acrocephalus沼泽在匈牙利，和东方芦苇莺Acrocephalus orientalis，牛头伯劳Lanius bucephalus和黑面buntings Emberiza spoprophala来自日本。我们的研究结果表明，不同的杜鹃属缺乏进化适应其相应的主机在鸡蛋形状。然而，我们的分析显示，杜鹃蛋的蛋形表现出地理差异。
Evolutionary adaptations are required by common cuckoos Cuculus canorus to match host eggs. Hosts may discriminate against alien eggs; hence, accurate matching of the parasite egg to the hosts' is essential. Egg shape is the least-studied component of egg mimicry, and it may also have other functions: an optimal egg shape is necessary for effective incubation. For this reason, cuckoo eggs may show a wide range of variations in shape to a set of host species. Here, we compare cuckoo and host eggs by using egg shape parameters in two distant areas: from the nests of great reed warblers Acrocephalus arundinaceus, robins Erithacus rubecula and marsh warblers Acrocephalus palustris in Hungary, and oriental reed warblers Acrocephalus orientalis, bull-headed shrikes Lanius bucephalus and black-faced buntings Emberiza spodocephala from Japan. Our results suggest the lack of evolutionary adaptation of different cuckoo gentes to their corresponding hosts in terms of egg shape. However, our analyses revealed that cuckoo eggs showed a geographical difference in egg shape.