• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Nature >A sexually selected character displacement in flycatchers reinforces premating isolation
【24h】

A sexually selected character displacement in flycatchers reinforces premating isolation

机译：捕蝇器中性选择角色的置换加强了过早的隔离

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

Theory suggests that natural selection against the production of unfit hybrids may reinforce barriers to gene flow, eventually leading to reproductive isolation of differentiated populations. This mode of speciation may be achieved by female choice selecting for a divergence in male secondary sexual traits that facilitates species recognition. Although intuitively appealing, conclusive evidence for such reinforcement is generally lacking, and serious doubts have been raised about its validity. We have tested key predictions of the reinforcement hypothesis on the European, black-and-white, Ficedula flycatchers, using molecular techniques, field observations and mate choice experiments. In populations where two species coexist, we show that female choice selects for a divergence in male plumage colour and that the resulting character displacement reduces the frequency of hybridization.
机译：理论表明，针对不合格杂种的生产进行自然选择可能会增强基因流动的障碍，最终导致分化种群的生殖隔离。通过选择有助于男性识别的男性次要性状的差异，女性可以选择这种物种形成方式。尽管从直观上讲吸引人，但通常缺乏确凿的证据来进行这种强化，并且对其有效性也提出了严重怀疑。我们已经使用分子技术，现场观察和选配实验对欧洲黑白花ced捕蝇器上增强假设的关键预测进行了测试。在两个物种共存的种群中，我们表明，雌性选择会导致雄性羽毛颜色发生分化，并且由此产生的性格位移会降低杂交频率。

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