Females may not obtain indirect genetic benefits from extra-pair paternity in vinous-throated parrotbills, Paradoxornis webbianus
Females may not obtain indirect genetic benefits from extra-pair paternity in vinous-throated parrotbills, Paradoxornis webbianus
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DOI：
10.1007/s10164-011-0292-y
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发表时间：
2011
影响因子：
0.9
通讯作者：
Jin‐Won Lee
中科院分区：
文献类型：
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作者：
Jin‐Won Lee
在鸟类中，确定雌性通过额外配对父系（EPP）寻求什么是理解物种内和物种间EPP发生率变化的基础。我进行了遗传亲子关系分析，在vinous-throated鹦鹉，Paramedornis webbianus，一个典型的双育雏雀形目，具有很强的羊群习惯。在这一物种中，已知EPP的患病率在两个产卵高峰之间变化显著; 95%的EPP发生在第一个高峰。在本研究中，我专注于是否女性获得遗传利益，通过EPP和它的相关性，EPP之间的两个产蛋高峰的偏差分布。我发现，女性没有获得“良好的基因”，使额外的对年轻人并不比对年轻人在雏鸟阶段的身体状况或他们的生存率，他们的第一个冬天。亲本遗传相似性和地方遗传多样性对EPP的发生没有显著影响，这些遗传相关性与EPP的斑块分布无关。总体而言，本研究的结论是，女性鹦鹉可能不会追求通过EPP的间接利益，并进一步研究测试直接利益的可能性将是值得的。
In birds, determining what females seek through extra-pair paternity (EPP) is fundamental in the understanding of variation in the incidence of EPP within and between species. I conducted genetic parentage analyses in vinous-throated parrotbills,Paradoxornis webbianus, a typical double-brooded passerine with a strong flock habit. In this species, it is known that the prevalence of EPP varies significantly between two egg-laying peaks; 95% of EPP occurred in the first peak. In the present study, I focused on whether or not females obtain genetic benefits through EPP and its relevance to the biased distribution of EPP between the two laying peaks. I found that females did not obtain ‘good genes’ so that extra-pair young were not better than within-pair young in terms of their body condition at the nestling stage or their survival rate to their first winter. I also found no significant effect of parental genetic similarity and local genetic diversity on the occurrence of EPP, and these genetic correlates were not related to the patchy distribution of EPP. Overall, this study concluded that female parrotbills may not pursue indirect benefits through EPP, and further study testing the possibility of direct benefits will be worthwhile.