Genetic Analysis of Sexual Dimorphism in the Toothed Earwig Spongovostox apicedentatus

齿蠼的性别二态性遗传分析

• 批准号: 9022012
• 负责人: Allen Moore
• 金额: $ 2.55万
• 依托单位: University of Kentucky Research Foundation
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1990
• 资助国家: 美国
• 起止时间: 1990-09-01 至 1992-02-29
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9022012&HistoricalAwards=false
• 关键词: Genetic; Analysis; Sexual; Dimorphism; Toothed

The PI proposes to examine the ultimate causes of variability in the forceps of S.apicedentatus by estimating the potential for a further evolutionary response and clarifying evolutionary constraints on the evolution of earwig. This will be accomplished by combining a partitioning and quantification of selection with a quantitative genetic analyses of forceps morphology. Computerized image analysis will be used to relate the morphological variability in forceps to success in intra and intersexual interactions. This provides a measure of relative fitness. Quantitative genetic analysis that estimate heritabilities and genetic correlations will indicate potential genetic influences and constraints on variability. The genetic analysis yields a measure of the potential for response to selection. Combining the analysis of selection with the estimated response to selection will provide a detailed description of the evolution of forceps in S. apicedentatus. This, this study will provide a detailed analysis of the evolution of a sexually dimorphic structure. In addition to this laboratory study, the PI will continue to collect preliminary field observations on the use of forceps by S. apicedentatus in the Sonoran desert of Arizona. Thus, the laboratory observations can be compared to a more natural situation. In addition, the field work will also generate preliminary data for future comparative analyses of variability between populations and species, and information useful in designing future field studies of other species of earwigs.

PI建议研究以下问题的最终原因： 通过估计尖齿链球菌的 进一步进化反应的可能性， 限制了我们的进化。 这将 通过结合分区和量化来实现 镊子的数量遗传分析选择 形态学 计算机图像分析将被用于关联 术中和术后成功的镊子形态变异性 两性互动 这提供了一个相对的度量， 健身 定量遗传分析估计 遗传力和遗传相关性将表明 遗传对变异性的影响和限制。 遗传 分析产生了一个潜在的反应措施， 选择. 将选择分析与 对选择的估计响应将提供详细的 描述了S.尖齿的 本研究将详细分析 两性异形结构的进化。 除本实验室研究外，PI将继续 收集关于镊子使用的初步现场观察结果， 由S.亚利桑那州索诺兰沙漠中的尖齿龙 因此 实验室观察可以与更自然的 形势 此外，实地工作还将产生 供今后对变异性进行比较分析的初步数据 种群和物种之间的关系，以及 设计未来对其他种类的earwigs的实地研究。