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Reciprocal Effects of Female Choice and Male Traits in Poecilia Reticulata

网孔雀雌性选择与雄性性状的相互影响

基本信息

批准号：
9006744
负责人：
John Endler
金额：
--
依托单位：
University of California-Santa Barbara
依托单位国家：
美国
项目类别：
Continuing grant
财政年份：
1990
资助国家：
美国
起止时间：
1990-08-15 至 1994-03-31
项目状态：
已结题

来源：
https://www.nsf.gov/awardsearch/showAward?AWD_ID=9006744&HistoricalAwards=false
关键词：
Reciprocal Effects Female Choice Male

项目摘要

Secondary sexual traits are common in animals, and male traits are sometimes so strongly developed that they appear maladaptive. What causes a particular combination of male traits and female preferences in a given population, and why do populations evolve different combinations of traits? The investigators are addressing this question in the guppy at several levels: the mechanisms of female choice, the effects of female choice on the evolution of color patterns within populations, and testing the prediction (from sexual selection theory) of co-divergence of female choice criteria and male traits among populations. This is a collaborative research effort with Anne Houde, New Mexico State University. They propose to explicitly test two major predictions from sexual selection theory. First, they will investigate the reciprocal evolution of male traits and female choice. Second, they propose to explore the effects of the sensory drive process, and how this interacts with the evolution of male traits and female choice. In order to do this, they propose to carry out three long-term selection experiments which should lead to long term genetic changes in female preferences and male traits. One experiment selects for male traits and looks for evolution of female preferences. Another selects for female preferences (via selection on spectral sensitivity) and looks for evolution of male traits. The third modifies the perception of color patterns (to females and predators) by varying ambient light color and predator color vision, and looks for changes in male traits and female preferences. The proposed continuation of the investigators work will yield an unusually complete understanding of the processes which affect the long term joint genetic change of female choice and secondary male traits under the influence of sexual selection and predation.

第二性征在动物中很常见，雄性特征有时发展得如此强烈，以至于它们看起来不适应。是什么导致了特定人群中男性特征和女性偏好的特定组合，以及为什么人群会进化出不同的特征组合？研究人员正在解决这个问题在孔雀鱼在几个层面上：女性选择的机制，女性选择的影响，种群内的颜色模式的演变，并测试预测（从性选择理论）的女性选择标准和男性性状之间的共同分歧人口。这是与新墨西哥州州立大学的安妮·胡德合作的研究成果。他们建议明确测试性选择理论的两个主要预测。首先，他们将研究男性特征和女性选择的相互进化。其次，他们建议探索感官驱动过程的影响，以及这如何与男性特征和女性选择的进化相互作用。为了做到这一点，他们建议进行三个长期的选择实验，这些实验应该会导致雌性偏好和雄性特征的长期遗传变化。一个实验选择男性特征，并寻找女性偏好的进化。另一个选择女性的偏好（通过光谱敏感性的选择），并寻找男性特征的进化。第三种通过改变环境光的颜色和捕食者的色觉来改变对颜色模式（对雌性和捕食者）的感知，并寻找雄性特征和雌性偏好的变化。建议继续调查工作将产生一个不寻常的完整的理解的过程中，影响长期联合遗传变化的女性选择和次要的男性特征的影响下，性选择和捕食。