权益分类	功能权益	普通用户	{{item.name}}会员
{{category.name}}	{{benefitItem.name}}

Collaborative Research: Reciprocal Effects of Female Choiceand Male Traits in Poecillia Reticulata

合作研究：Poecillia Reticulata 雌性选择和雄性性状的相互影响

基本信息

批准号：
9019050
负责人：
Anne Houde
金额：
$ 8.58万
依托单位：
New Mexico State University
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 1991-08-15
项目状态：
已结题

来源：
https://www.nsf.gov/awardsearch/showAward?AWD_ID=9019050&HistoricalAwards=false
关键词：
Collaborative Research Reciprocal Effects Female

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 effort with John A. Endler, University of California @ Santa Barbara. 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非常强烈，以至于显得不适应。是什么导致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？研究人员正在孔雀鱼的几个层面上解决这个问题：雌性选择的机制、雌性选择对种群内颜色模式进化的影响，以及测试种群中雌性选择标准和雄性特征共同分化的预测（根据性选择理论）。这是与加州大学圣巴巴拉分校 John A. Endler 的合作成果。他们提议明确检验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演化。其次，他们建议探索感觉驱动过程的影响，以及它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，他们建议进行三项长期选择实验，这应该会导致女性偏好和男性特征的长期遗传变化。一项实验选择男性特征并寻找女性偏好的演变。另一个选择女性偏好（通过光谱敏感性选择）并寻找男性特征的进化。第三种通过改变环境光颜色和捕食者色觉来改变（对雌性和捕食者）颜色模式的感知，并寻找雄性特征和雌性偏好的变化。研究人员建议继续开展的工作将对在性选择和捕食影响下影响雌性选择和次要雄性性状的长期联合遗传变化的过程产生异常完整的理解。