• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Evolution: International Journal of Organic Evolution >Male versus female mate choice: Sexual selection and the evolution of species recognition via reinforcement
【24h】

Male versus female mate choice: Sexual selection and the evolution of species recognition via reinforcement

机译：男性和女性的伴侣选择：性别选择和通过强化进行物种识别的演变

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Male mate choice, expressed through courtship preferences, sometime occurs even under the mating system of polygyny, when the operational sex ratio is skewed toward males. The conditions under which male mate choice may be expected during polygyny are not well established. Servedio and Lande (2006, Evolution 60:674-685), assuming strict polygyny where all females have equal mating success, show that when having a preference does not increase the amount of energy that a male can put into courtship, male preferences for "arbitrary" female ornaments should not be expected to evolve; direct selection acts against them because they place males that carry them into situations in which there is high competition for mates. Here I explore in detail two situations under which logic dictates that this effect may be overcome or reversed. First I determine the contributions that direct and indirect selection place on male versus female preferences for traits that increase viability, using notation that allows the exact expression of these measures of selection. I find that direct selection against male preferences still predominates in the male mate choice model, causing less evolution by male than female preferences under these conditions. Second I address whether male mate choice is likely to evolve as a mechanism of premating isolation leading to species recognition, driven by the process of reinforcement. Reinforcement is compared under male and female mate choice, using a variety of models analyzed by both analytical techniques assuming weak selection and numerical techniques under broader selective conditions. I demonstrate that although under many conditions stronger premating isolation evolves under female mate choice, reinforcement may indeed occur via male mate choice alone.
机译：通过求偶偏好表达的男性伴侣选择有时甚至发生在一夫多妻制的交配系统中，此时工作性别比例偏向男性。一夫多妻制期间可能期望选择男性伴侣的条件尚不明确。 Servedio和Lande（2006，Evolution 60：674-685）假设严格的一夫多妻制，即所有雌性都有相同的交配成功，则表明当拥有偏好时，男性的求爱能量不会增加，男性对于“不应指望任意的女性饰品会演变;直接选择对他们不利，因为他们将雄性带入他们的伴侣中，而这种竞争使伴侣处于激烈竞争中。在这里，我详细探讨了两种情况，在这些情况下逻辑指示可以克服或逆转这种影响。首先，我使用能够精确表达这些选择指标的符号，确定直接和间接选择对男性和女性偏爱增加生存能力的性状的贡献。我发现，在男性伴侣选择模型中，针对男性偏好的直接选择仍然占主导地位，在这种情况下，男性偏好的变化要小于女性偏好。其次，我探讨了雄性配偶的选择是否有可能作为强化过程推动的过早隔离导致物种识别的一种机制。在男性和女性同伴选择下，使用由分析技术（假设选择力弱）和数值技术在较宽泛的选择条件下分析的各种模型来比较配筋。我证明，尽管在许多条件下，雌性配偶的选择会产生较强的过早隔离，但仅通过雄性配偶的选择确实可能会加强。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号