Correlation between male song repertoire, extra-pair paternity and offspring survival in the great reed warbler
Correlation between male song repertoire, extra-pair paternity and offspring survival in the great reed warbler
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DOI：
10.1038/381229a0
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发表时间：
1996-05-16
期刊：
影响因子：
64.8
通讯作者：
vonSchantz, T
中科院分区：
文献类型：
--
作者：
Hasselquist, D;Bensch, S;vonSchantz, T
在许多鸟类中，雌性与非社会配偶的雄性交配，导致额外配对受精（EPF）（1-7）。然而，为什么女性寻求EPF仍然是未知的（7，8）。在一项研究中，占大多数EPF的男性生存率较高（6），但既没有发现男性质量的特征，也没有发现女性选择有吸引力的男性的好处。大苇莺，Acrocephalus arundinaceus，是社会性的一夫多妻制，女性根据领土质量（9）和歌曲曲目的大小（10），这两个预测后宫的大小和繁殖成功（11，12）。通过DNA指纹分析（13），我们证明了雌性大苇莺从邻近的雄性那里获得的EPF比它们的社会伴侣大。此外，后代的相对后羽翼未丰的生存呈正相关，与他们的遗传父亲的歌曲曲目的大小。这些数据支持这样的假设，即女性，通过参与额外的对受精，为他们的后代寻求遗传利益（7，8）。
IN many birds, females copulate with males other than their social mate, resulting in extra-pair fertilizations (EPFs)(1-7). It is still unknown, however, why females seek EPFs(7,8). In one study, males that accounted for most EPFs had higher survival(6), but neither the characteristics revealing male quality nor the benefits accruing to females selecting attractive males were identified. Great reed warblers, Acrocephalus arundinaceus, are socially polygynous, and females base their mate choice on territory quality(9) and song-repertoire size(10), both of which predict harem size and reproductive success(11,12). By DNA fingerprinting(13), we demonstrate that female great reed warblers obtain EPFs from neighbouring males with larger song repertoires than their social mate. In addition, the relative post-fledging survival of offspring was positively correlated with their genetical fathers' song repertoire size. These data support the hypothesis that females, by engaging in extra-pair fertilizations, seek genetic benefits for their offspring(7,8).