PRF/J: The Evolution of Diet Breadth in the Two-Feeding Beetles

PRF/J：两种进食甲虫饮食广度的演变

• 批准号: 9403244
• 负责人: Charles Fox
• 金额: $ 6.96万
• 依托单位: Fellowships
• 依托单位国家: 美国
• 项目类别: Fellowship Award
• 财政年份: 1994
• 资助国家: 美国
• 起止时间: 1994-06-01 至 1997-11-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9403244&HistoricalAwards=false
• 关键词: PRF; Evolution; Diet; Breadth; Two

9403244 Fox This research aims to develop a system to be used as a model for testing fundamental genetic hypotheses dealing with the evolution of insect diet breadth, including host shifts and/or expansions. Evolutionary mechanisms responsible for diet breadth will be sought using two sibling species of seed-feeding beetle, Stator beali (a specialist restricted to the host plant Chloroleucon ebano) and Stator limbatus (a feeding generalist associated with more than fifty host plant species). The work involves documenting patterns of intra- and inter-population variation in oviposition preference and host suitability, and subsequently examination of genetic and environmental sources of this variation using laboratory and field experimentation. %%% Performing a genetic analysis of mechanisms responsible for insect diet breadth is important to understanding sympatric speciation, incorporation of novel host plant species into diet (particularly for introduced pests), maintenance of genetic variation within natural populations, and development of reliable pest control practices / techniques. ***

小行星9403244 本研究的目的是开发一个系统，作为一个模型来测试基本的遗传假说处理昆虫的饮食宽度的演变，包括主机的转变和/或扩展。 负责饮食宽度的进化机制将寻求使用两个兄弟物种的种子喂养甲虫，定子beali（一个专家限于宿主植物Chloroleucon ebano）和定子limbatus（一个喂养通才与50多个宿主植物物种）。 这项工作涉及记录模式内和种群间的产卵偏好和主机的适合性变化，并随后检查这种变化的遗传和环境来源，使用实验室和田间实验。 对昆虫食性宽度的遗传机制进行分析，对于理解同域物种形成、将新的寄主植物物种纳入食性（特别是对于引入的害虫）、维持自然种群内的遗传变异以及发展可靠的害虫控制措施/技术非常重要。 ***