SEXUAL CONFLICT AND ARMS RACES BETWEEN THE SEXES - A MORPHOLOGICAL ADAPTATION FOR CONTROL OF MATING IN A FEMALE INSECT
SEXUAL CONFLICT AND ARMS RACES BETWEEN THE SEXES - A MORPHOLOGICAL ADAPTATION FOR CONTROL OF MATING IN A FEMALE INSECT
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DOI：
10.1098/rspb.1995.0126
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发表时间：
1995-07-22
影响因子：
4.7
通讯作者：
ROWE, L
中科院分区：
文献类型：
--
作者：
ARNQVIST, G;ROWE, L
两性之间对交配控制权的冲突可能会推动复杂的生殖器和其他第二性器官的共同进化。支持这一假设的是有限的男性适应功能，以加强男性控制女性在交配（如结构，功能，以扣女性）。女性的形态适应的证据是至关重要的假设，但缺乏。在这里，我们提出的第一个实验证据表明，女性腹刺水的功能，以增加女性控制交配。通过实验扩展这些棘的表型大小范围，我们表明，这种形态适应，具体到女性，使他们能够阻止骚扰男性，并作为一个结果，降低昂贵的交配的频率，女性。这表明了性冲突的共同进化本质，女性确实是生殖控制进化冲突的积极参与者。
Conflict between the sexes over control of copulation may drive the coevolution of elaborate genitalia and other secondary sexual structures. Support for this hypothesis is limited to male adaptations that function to enhance male control over females in copulation (e.g. structures that function to clasp females). Evidence for morphological adaptation in females is critical to the hypothesis, yet lacking. Here, we present the first experimental evidence demonstrating that female abdominal spines in water striders function to increase female control over copulation. By experimentally extending the phenotypic size range of these spines, we show that this morphological adaptation, specific to females, allows them to thwart harassing males, and as a result, reduce the frequency of costly matings to females. This demonstrates the coevolutionary nature of sexual conflict and that females are indeed active participants in the evolutionary conflict over control of reproduction.