Male phenotype predicts extra-pair paternity in pied flycatchers
Male phenotype predicts extra-pair paternity in pied flycatchers
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DOI：
10.1163/000579511x573917
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发表时间：
2011-01-01
期刊：
影响因子：
1.3
通讯作者：
Davila, Jose A.
中科院分区：
文献类型：
--
作者：
Canal, David;Potti, Jaime;Davila, Jose A.
额外配对的父子关系有可能增加男性的生殖成功，反过来，性选择也有可能作用于预测额外配对配偶成功的男性特征。在雄性性状预测额外配对行为成功的程度上，欧洲捕蝇者(Ficedula Hypoleuca)的雄性特征存在很大差异。在伊比利亚群体中，额外配对年轻的比例相对较高，多个男性特征与额外配对亲子鉴定的成功有关。带绿帽子的雄性比戴绿帽子的个体有更大的眼睑和更有吸引力的性装饰(更黑的背部羽毛和更大的额头斑块)，这一结果在其他种群中没有复制。以前对该物种的研究表明，在我们的种群中，与成功实现额外配对父子关系相关的所有特征都是可遗传的，可能是男性质量的可靠指标。对于雄性来说，繁殖更多的后代是一个有利的策略，因为这并不意味着它们在自己的巢中失去了父亲的身份。因此，我们的结果表明，在这一群体中，这种行为可能会促进男性特征的进化，这些特征与成功地成为双胞胎父亲有关。
Extra-pair paternity has the potential to increase male reproductive success and in turn the potential for sexual selection to act on male traits predicting extra pair mate success. There is large variation among European populations of pied flycatchers (Ficedula hypoleuca) in the extent to which male traits predict success in extra pair mating behaviour. In an Iberian population with a relatively high proportion of extra-pair young multiple male traits were involved in extra pair paternity success. Cuckolder males had larger tarsi and more attractive sex ornaments (blacker dorsal plumage and larger forehead patches) than the individuals they cuckolded, results not replicated in other populations. Previous studies in the species have shown that all traits associated with achieving success in extra pair paternity in our population are heritable and likely reliable indicators of male quality. Siring additional young was an advantageous strategy for males as it did not imply loss of paternity in their own nests. Our results, thus, suggest that this behaviour may enhance the evolution of male traits associated to success in extra-pair paternity in this population.