Male size and sequential mate preference in the cricket Gryllus bimaculatus
Male size and sequential mate preference in the cricket Gryllus bimaculatus
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DOI：
10.1006/anbe.2000.1617
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发表时间：
2001-03-01
期刊：
影响因子：
2.5
通讯作者：
Ferguson, JWH
中科院分区：
文献类型：
--
作者：
Bateman, PW;Gilson, LN;Ferguson, JWH
在蟋蟀中，雌性表现出对雄性特征的偏好，比如身体大小，要么干脆拒绝，要么花更长的时间与之交配，要么更早地移除不受欢迎的雄性的精原，从而中断精子转移。然而，在大多数择偶研究中，到目前为止，经验测试都集中在同时出现的男性之间的选择上，这可能不能反映自然情况。我们依次接触到潜在的配偶，雌性从完全天真(处女)到两次交配。幼稚的雌性不会更快地移除较小雄性的精托，但倾向于(不重要的)直接拒绝较小雄性。随着经验的增加，精子团的保留时间普遍减少，但大雄性更受青睐：当大雄性继承小雄性时，雌性的保留时间会增加，或者保持相同的持续时间。当小雄性接替大雄性或小雄性时，被拒绝的次数更多，但当大雄性继承小雄性时，拒绝更少。雌性在第一次交配时似乎会“打赌”，而不是无法判断雄性的大小/质量；但随着经验的增加，它们的精巢保留和排斥行为清楚地表明，它们偏爱大型雄性，并积极歧视小型雄性。在精子转移方面，第一个男性具有优势，但随后的女性行为会损害小第一个伴侣获得的任何优势。(C)2001年动物行为研究协会。
In crickets, females show preferences for male traits such as body size and either reject outright, take longer to mate with, or remove the spermatophores of nonfavoured males sooner, interrupting sperm transfer. In most mate choice studies, however, empirical tests so far have concentrated on choice between simultaneously presented males, which may not reflect the natural situation. We exposed sequentially to potential mates females that ranged from completely naive (virgin) to twice mated. Naive females did not remove the spermatophores of smaller males sooner, but tended (nonsignificant) to reject small males outright. With increasing experience, there was a general decline in spermatophore retention time, but large males were favoured: females either increased retention time when large males succeeded small males or maintained it for the same duration. There were more rejections when small males succeeded large or small males, but fewer when large males succeeded small males. Females appeared to 'bet hedge' at the first copulation, rather than be unable to judge male size/quality; but with increasing experience, their spermatophore retention and rejection behaviour clearly indicated a favouring of large males and an active discrimination against small males. There was a first-male advantage in terms of sperm transfer, but subsequent female behaviour compromised any advantage gained by a small first mate. (C) 2001 The Association for the Study of Animal Behaviour.