Dissertation Research: Evolutionary Genetics of Selective Preference and Gamete Competition in Drosophila

论文研究：果蝇选择偏好和配子竞争的进化遗传学

• 批准号: 9902167
• 负责人: Daniel Promislow
• 金额: $ 0.8万
• 依托单位: University of Georgia Research Foundation Inc
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1999
• 资助国家: 美国
• 起止时间: 1999-06-01 至 2001-05-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9902167&HistoricalAwards=false
• 关键词: Dissertation; Research; Evolutionary; Genetics; Selective

Abstract9902167Sexual selection, the selective force that results from competition between males for access to mates, has received increasing attention in recent years. Researchers have uncovered a startling array of biological traits that males have evolved to enhance their success in obtaining mates. This study seeks to examine how females might influence the process of sexual selection, and in particular, the way in which sperm from multiple males compete within a female's reproductive tract in the fruit fly, Drosophila melanogaster. The first component of this study will examine how patterns of sperm competition vary among different female genotypes. The second component will look at the relationship between how attractive a male is and the ability of his sperm to compete with other males' sperm. The final component will determine whether males with experimentally reduced attractiveness have reduced sperm competitive ability, due to facultative responses in the female.While the male role in sexual selection has been examined extensively, far less is known of the female role. Typically, females have been considered as passive participants whose preferences and other reproductive behaviors vary little. In order to more fully understand reproductive decisions in general, we need to add a more complete understanding of the female perspective to what we already know about the mating decisions of males.

性选择是雄性动物为获得配偶而进行竞争的选择力量，近年来受到越来越多的关注。 研究人员发现了一系列令人吃惊的生物学特征，这些特征是雄性进化而来的，以提高它们获得配偶的成功率。本研究旨在探讨女性如何可能影响性选择的过程，特别是，在其中来自多个男性的精子在一个女性的生殖道内的果蝇，果蝇的方式竞争。 本研究的第一部分将研究精子竞争模式如何在不同的女性基因型之间变化。第二部分将研究男性的吸引力与其精子与其他男性精子竞争的能力之间的关系。最后一个部分将确定是否男性的吸引力降低实验减少精子竞争能力下降，由于在女性的兼性反应，虽然男性在性选择中的作用已经被广泛研究，远低于女性的角色所知。通常，女性被认为是被动的参与者，其偏好和其他生殖行为变化不大。 为了更全面地理解一般的生殖决策，我们需要在我们已经知道的雄性交配决策的基础上，再增加一个对雌性观点的更全面的理解。