• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>The American Naturalist: Devoted to the Conceptual Unification of the Biological Sciences >Diffuse selection on resistance to deer herbivory in the ivyleaf morningglory, Ipomoea hederacea
【24h】

Diffuse selection on resistance to deer herbivory in the ivyleaf morningglory, Ipomoea hederacea

机译：在常春藤牵牛花，番薯七彩对鹿食草性的抗性选择

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

Recent work defines coevolution between plants and herbivores as pairwise when the pattern of selection on resistance traits and the response to selection are both independent of the presence or absence of other herbivores. In addition, for a pairwise response to selection, resistance to a focal herbivore must have the same genetic basis in the presence and absence of other herbivores. None of these conditions were satisfied for the ivy leaf morning glory, Ipomoea hederacea, and its insect, fungal, and mammalian natural enemies with a quantitative genetics field experiment. A significant negative genetic correlation exists between resistance to deer and generalist insect herbivory that would preclude an independent response to selection. In addition, resistance loci under selection differ depending on the composition of the natural enemy community as indicated by genetic correlations between deer resistances in the presence and absence of other natural enemies that differ substantially from 1. Finally, selection on deer resistance depends on the presence or absence of insects; in the presence of insects, greater deer resistance is favored, but in the absence of insects, deer resistance is effectively neutral. These results indicate that the composition of the natural enemy community can alter both the pattern of selection and the likely response to selection of resistance traits.
机译：当抗性状的选择方式和对选择的反应都独立于是否存在其他草食动物时，最新的工作将植物和草食动物之间的协同进化定义为成对的。此外，对于成对的选择反应，在存在和不存在其他食草动物的情况下，对局灶食草动物的抗性必须具有相同的遗传基础。对于常春藤叶牵牛花，番薯七彩及其昆虫，真菌和哺乳动物天敌，这些条件都无法通过定量遗传学现场试验得到满足。对鹿的抗性与普通昆虫的食草性之间存在显着的负遗传相关性，这将妨碍对选择的独立反应。此外，根据存在和不存在其他与1完全不同的天敌的鹿抗性之间的遗传关系，根据天敌群落的组成，选择的抗性位点也有所不同。最后，对鹿抗性的选择取决于存在或没有昆虫;在有昆虫的情况下，更有利于鹿的抗性，但是在没有昆虫的情况下，鹿的抗性实际上是中性的。这些结果表明，天敌社区的组成既可以改变选择模式，也可以改变对抵抗性状选择的反应。

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