Dissertation Research: The Ecological and Evolutionary Determinants of Host Range in the Tachinidae

论文研究：寄蝇科寄主范围的生态和进化决定因素

• 批准号: 9801537
• 负责人: Nancy Moran
• 金额: $ 0.75万
• 依托单位: University of Arizona
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1998
• 资助国家: 美国
• 起止时间: 1998-06-15 至 2000-12-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9801537&HistoricalAwards=false
• 关键词: Dissertation; Research; Ecological; Evolutionary; Determinants

9801537 Moran and Stireman This research is concerned with the factors that determine the host range of parasitic insects. Many parasites are highly specialized and generally incapable of moving between hosts. In contrast, tachinid flies that act as parasites (Diptera; Tachinidae) tend to exhibit wide host ranges. There is relatively little understanding of what ecological factors determine the range of hosts utilized by a parasitoid. The PIs hypothesize that tachinid host ranges are primarily determined by the search strategies used to find host species. Their research will take three approaches: 1) it will involve a comparison of host-related behaviors of two species that vary in host specificity, 2) examine the patterns of host use by a community of tachinid parasitoids in the field and 3) analyze the evolutionary patterns of host use in a subgroup of the family. By integrating information from these three levels of inquiry, they will further our understanding of the development and ecological modification of parasitoid-host associations.

[8015 . 37] Moran and Stireman本研究关注的是决定寄生昆虫寄主范围的因素。许多寄生虫是高度特化的，通常不能在宿主之间移动。相比之下，作为寄生虫的速蝇（双翅目；速蝇科）往往表现出广泛的寄主范围。对于哪些生态因素决定了寄生蜂利用的寄主范围，人们的理解相对较少。pi假设速虫的寄主范围主要由寻找寄主物种的搜索策略决定。他们的研究将采取三种方法：1)比较两种不同寄主特异性物种的寄主相关行为；2)在野外研究一个速虫类寄主群落的寄主使用模式；3)分析该科一个亚群的寄主使用进化模式。通过整合这三个层次的调查信息，他们将进一步加深我们对寄生蜂-寄主关联的发展和生态修饰的理解。