...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Proceedings of the National Academy of Sciences of the United States of America >Information constraints and the precision of adaptation: sex ratio manipulation in wasps.
【24h】

Information constraints and the precision of adaptation: sex ratio manipulation in wasps.

机译：信息限制和适应的精度：黄蜂的性别比操纵。

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

Sex allocation theory offers excellent opportunities for studying the precision of adaptation. One of the best-supported areas in the field of sex allocation is Hamilton's theory of local mate competition, which predicts female-biased offspring sex ratios when populations are structured such that mating takes place locally before females disperse. As predicted by local mate competition theory, females of numerous species, especially parasitoid wasps, have been shown to lay a less female-biased sex ratio as the number of females simultaneously laying eggs on a patch increases. It has usually been assumed that this sex ratio adjustment comes through individuals adjusting their behavior directly in response to the presence of other females. Here we show that in the parasitoid wasp Nasonia vitripennis, this shift in offspring sex ratios is primarily caused by the presence of eggs laid by other females and to a lesser extent by the presence of other females. We confirm that females are behaving as predictedby theory, but the way in which they do so is not as straightforward as is often assumed. Instead, even when there are multiple females on a patch, individuals still use the cues that are more commonly associated with sex ratio adjustment in response to sequential visits to a patch by females. This result provides a possible explanation for the observed variation in N. vitripennis sex ratios. More generally, it confirms the need to consider the mechanistic basis of a behavior to understand fully its adaptive value.
机译：性别分配理论为研究适应的精度提供了极好的机会。性别分配领域中最受支持的领域之一是汉密尔顿的本地伴侣竞争理论，该理论预测当种群结构使得女性在散布之前就在本地发生交配时，女性偏向后代的性别比例。正如当地伴侣竞争理论所预测的那样，随着在贴片上同时产卵的雌性数量的增加，许多物种的雌性，尤其是寄生类黄蜂的雌性比例降低。通常认为，这种性别比例调整是通过个人根据其他女性的存在直接调整其行为来实现的。在这里，我们显示出在寄生类黄蜂Nasonia vitripennis中，后代性别比例的这种变化主要是由其他雌性产下的卵引起的，而在较小程度上是由其他雌性下卵引起的。我们确认女性的行为举止如理论所预测，但其行为方式并不像通常所假设的那么简单。相反，即使补丁上有多个雌性，个体仍会使用与性别比例调整相关的更常见的提示，以响应雌性对雌性的连续访问。该结果为观察到的维氏猪笼草性别比的变化提供了可能的解释。更普遍地说，它确认需要考虑行为的机械基础以充分理解其适应性价值。

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