Male age is associated with extra-pair paternity, but not with extra-pair mating behaviour
Male age is associated with extra-pair paternity, but not with extra-pair mating behaviour
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男性年龄与配对外亲子关系有关，但与配对外交配行为无关
DOI：
10.1101/219477
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发表时间：
2017
期刊：
影响因子：
--
通讯作者：
Girndt A
中科院分区：
文献类型：
--
作者：
Girndt A
额外配对父子关系是女性与社会伴侣以外的男性交配的结果。在实行一夫一妻制的社会鸟类中，年老的雄性最有可能繁育额外的后代。男性操纵和女性选择假说预测，特定年龄的男性交配行为可以解释这种年长男性相对年轻男性的优势。这些假设很难检验，因为交配和所涉及的个体很难观察。在这里，我们研究了圈养麻雀的交配行为和配对环境。我们的设置模仿了野生麻雀所经历的复杂的社会环境。我们发现，在自然群体中被视为老年的中年男性获得了最多的额外配对亲子关系。然而，雌性的引诱行为和随后的额外交配均与雄性年龄无关。此外，在雌性的请求下交配比由雄性发起的交配更有可能（即主动交配）。雄性发起的配对内交配比雄性发起的配对外交配更常见。总而言之，我们的结果并不支持有关特定年龄男性交配行为的任何假设。相反，与男性年龄无关的女性选择决定了交配的成功，尤其是在额外配对的情况下。交配后机制可能决定了为什么老年雄性会生育更多的额外配对后代。
Extra-pair paternity is the result of copulation between a female and a male other than her social partner. In socially monogamous birds, old males are most likely to sire extra-pair offspring. The male manipulation and female choice hypotheses predict that age-specific male mating behaviour could explain this old-over-young male advantage. These hypotheses have been difficult to test because copulations and the individuals involved are hard to observe. Here, we studied the mating behaviour and pairing contexts of captive house sparrows,Passer domesticus. Our set-up mimicked the complex social environment experienced by wild house sparrows. We found that middle-aged males, which would be considered old in natural populations, gained most extra-pair paternity. However, both, female solicitation behaviour and subsequent extra-pair matings were not associated with male age. Further, copulations were more likely when solicited by females than when initiated by males (i.e. unsolicited copulations). Male initiated within-pair copulations were more common than male initiated extra-pair copulations. To conclude, our results did not support either hypothesis regarding age-specific male mating behaviour. Instead, female choice, independent of male age, governed copulation success, especially in an extra-pair context. Post-copulatory mechanisms might determine why older males sire more extra-pair offspring.
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影响因子：
2.5
作者：
A. Møller
通讯作者：
A. Møller
DOI：
10.1098/rspb.2013.2843
发表时间：
2014-07-07
影响因子：
4.7
作者：
Sanchez-Macouzet, Oscar;Rodriguez, Cristina;Drummond, Hugh
通讯作者：
Drummond, Hugh
正态线性模型
DOI：
--
发表时间：
2015
期刊：
影响因子：
--
作者：
F. Korner‐Nievergelt;Tobias Roth;S. Felten;J. Guélat;B. Almasi;Pius Korner
通讯作者：
Pius Korner
影响因子：
5.8
作者：
Aaron M. Christ
通讯作者：
Aaron M. Christ
影响因子：
4.9
作者：
David S. Richardson;T. Burke
通讯作者：
David S. Richardson;T. Burke