Female genitalia concealment promotes intimate male courtship in a water strider.
Female genitalia concealment promotes intimate male courtship in a water strider.
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DOI：
10.1371/journal.pone.0005793
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发表时间：
2009-06-10
期刊：
影响因子：
3.7
通讯作者：
Jablonski PG
中科院分区：
文献类型：
--
作者：
Han CS;Jablonski PG
暴力胁迫交配的启动是典型的动物与交配的性冲突。在这些物种中，雌性对胁迫交配的防御和雄性对增加交配成功率的反适应之间的共同进化军备竞赛导致了对影响交配的雄性和雌性特征的共同进化追逐。两性中的一方是否能够进化出使他们能够“赢得”这场军备竞赛的特征，这一直是有争议的。在这里，我们使用形态分析（传统的和扫描电子显微镜），实验室实验和比较方法，以显示女性的一个物种的特点是典型的强制交配启动出现“赢”的一个特定阶段的性冲突，通过不断演变的形态隐藏他们的生殖器从直接，强制访问的男性。在一个明显的反应，女性形态适应，男性的这一物种增加了他们的典型暴力胁迫安装的女性新的安装后，前交配求爱信号所产生的水的表面与中腿。这些求爱信号是亲密的，因为它们是针对雌性的，而雄性已经骑在雌性身上了。雌性对这些信号的反应是暴露出隐藏的生殖器进行交配。我们的研究结果表明，一种性别在形态学上的共同进化军备竞赛的明显胜利可能会引发另一种性别的行为表型的进化。
Violent coercive mating initiation is typical for animals with sexual conflict over mating. In these species, the coevolutionary arms-race between female defenses against coercive mating and male counter-adaptations for increased mating success leads to coevolutionary chases of male and female traits that influence the mating. It has been controversial whether one of the sexes can evolve traits that allow them to “win” this arms race. Here, we use morphological analysis (traditional and scanning electron micrographs), laboratory experiments and comparative methods to show how females of a species characterized by typical coercive mating initiation appear to “win” a particular stage of the sexual conflict by evolving morphology to hide their genitalia from direct, forceful access by males. In an apparent response to the female morphological adaptation, males of this species added to their typically violent coercive mounting of the female new post-mounting, pre-copulatory courtship signals produced by tapping the water's surface with the mid-legs. These courtship signals are intimate in the sense that they are aimed at the female, on whom the male is already mounted. Females respond to the signals by exposing their hidden genitalia for copulatory intromission. Our results indicate that the apparent victory of coevolutionary arms race by one sex in terms of morphology may trigger evolution of a behavioral phenotype in the opposite sex.
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影响因子：
2
作者：
Han, Sang-Eon
通讯作者：
Han, Sang-Eon
影响因子：
2.3
作者：
HAYASHI, K
通讯作者：
HAYASHI, K
影响因子：
2.1
作者：
Bertin, A;Fairbairn, DJ
通讯作者：
Fairbairn, DJ
影响因子：
1.4
作者：
Fairbairn, DJ;Vermette, R;Zahiri, N
通讯作者：
Zahiri, N
影响因子：
3.7
作者：
Brennan, Patricia L. R.;Prum, Richard O.;Birkhead, Tim R.
通讯作者：
Birkhead, Tim R.