Collaborative Research: Phylogeny of leiobunine harvestmen (Opiliones) of eastern North America and phylogeny-based tests of sexually antagonistic coevolution

合作研究：北美东部的leiobunin收获者（Opiliones）的系统发育和基于系统发育的性拮抗共同进化测试

• 批准号: 0640179
• 负责人: Jeffrey Shultz
• 金额: $ 20万
• 依托单位: University of Maryland, College Park
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2007
• 资助国家: 美国
• 起止时间: 2007-03-15 至 2011-02-28
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0640179&HistoricalAwards=false
• 关键词: Collaborative; Research; Phylogeny; leiobunine; harvestmen

Structures and behaviors used in mating tend to evolve more rapidly than other features. One explanation for this pattern is that the sexes are engaged in a perpetual "arms race" in which males and females vie for control over the investment each makes toward reproduction. Collaborators Shultz and Hedin will test the sexual-conflict hypothesis in harvestmen or daddy long-legs. They will lead an international team to reconstruct the evolutionary relationships among 90 species using molecular sequence data. The resulting phylogenetic tree will be the first for these animals and will be used to determine the timing and direction of evolutionary changes in reproductive features. Statistical tests will determine whether evolutionary patterns are consistent with a sexual arms race in which antagonistic features of one sex promote the evolution of defensive or antagonistic features in the other. The project will generate much-needed data for addressing on-going controversies about the evolutionary mechanisms underlying rapid diversification of reproductive features. In addition, the project will fund 30 children from low-income families in the Washington DC area to participate in a summer day camp at the University of Maryland. Campers are introduced to the diversity and scientific study of insects and other arthropods. The project will also train graduate students in systematics and evolutionary biology at the University of Maryland and San Diego State University.

用于交配的结构和行为往往比其他特征进化得更快。对这种模式的一种解释是，两性之间进行着一场永久的“军备竞赛”，在这场竞赛中，男性和女性争夺对各自用于繁殖的投资的控制权。 合作者舒尔茨和赫丁将在收割者或长腿爸爸身上测试性冲突假设。 他们将领导一个国际团队，利用分子序列数据重建90个物种之间的进化关系。由此产生的系统发育树将是这些动物的第一个，并将用于确定生殖特征进化变化的时间和方向。统计检验将确定进化模式是否与性军备竞赛相一致，在这种竞赛中，一种性别的对抗性特征促进了另一种性别的防御性或对抗性特征的进化。 该项目将产生急需的数据，以解决正在进行的关于生殖特征快速多样化背后的进化机制的争议。此外，该项目还将资助30名来自华盛顿地区低收入家庭的儿童参加马里兰州大学的夏令营。 露营者被介绍给昆虫和其他节肢动物的多样性和科学研究。该项目还将在马里兰州和圣地亚哥州立大学培训系统学和进化生物学的研究生。