亲子适应和双重遗传控制对母亲的照顾
A F Agrawal1, E D Brodie, J Brown
1Department of Biology and Center for the Integrative Study of Animal Behavior, Indiana University, Bloomington, IN 47405-3700, USA. aagrawal@bio.indiana.edu
Science (New York, N.Y.)
|June 2, 2001
概括
挖掘虫的家长照顾受后代的条件和遗传学的影响. 这两个孩子都是后代.
科学领域:
- 行为生态学 行为生态学
- 动物行为 动物行为
- 进化生物学 进化生物学
背景情况:
- 在许多物种中,父母的照顾对于后代的生存至关重要.
- 后代的信号和父母的反应调解了所提供的护理水平.
- 诚实的信号理论和母子适应理论为理解这些相互作用提供了框架.
研究的目的:
- 为了研究影响在挖掘虫,Sehirus cinctus*中产妇供给的因素.
- 确定后代条件,后代遗传变异和父母遗传变异在母亲护理中的作用.
- 检查后代信号和母体供应之间的遗传相关性.
主要方法:
- 试验性操纵后代的条件.
- 交叉培养实验以评估对母亲护理的遗传影响.
- 对后代引起关怀的能力和父母对信号的反应的遗传变异的分析.
主要成果:
- 在*Sehirus cinctus*中,母体供应应应对后代状况的实验性变化,支持诚实的信号理论.
- 两次交叉培养实验揭示了母亲护理的重要遗传组成部分.
- 后代的遗传变异会影响他们寻求照顾的能力,而父母的遗传变异会影响他们对后代信号的反应能力.
- 发现后代信号和母体供应之间存在负遗传相关性,这与母子共适应理论相一致.
结论:
- 挖掘虫的孕产妇护理是由环境因素 (后代状况) 和遗传因素决定的.
- 后代和父母的遗传变异在孕产妇护理的演变中起着不同的作用.
- 这些发现支持了关于诚实信号和母子共同适应在塑造亲子互动中的理论.
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