DISSERTATION RESEARCH: The Effect of Secondary Herbivores on Tritrophic Interactions.

论文研究：次要食草动物对三营养相互作用的影响。

• 批准号: 0508165
• 负责人: Robert Jones
• 金额: --
• 依托单位: Virginia Polytechnic Institute and State University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2005
• 资助国家: 美国
• 起止时间: 2005-07-01 至 2008-06-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0508165&HistoricalAwards=false
• 关键词: DISSERTATION; RESEARCH; Effect; Secondary; Herbivores

Species interact in a complex system with many relationships among them. However, a single species is often studied with respect to only one other species. This project will conduct field and laboratory experiments to examine how a second herbivore species affects the interactions in a plant-herbivore-parasite system. It will examine the role of aphids, which are plant sap feeders, on tobacco-caterpillar-wasp interactions, and examine how the presence of aphids change plant chemistry, which may alter the way a caterpillar and parasitic wasp interact. The growth rates of parasites and herbivores, parasite preference, egg-laying decisions of moths, and parasite infestation rates will be measured. Lastly, this project will examine how spatial scale alters the outcome of these interactions. This work will broaden our understanding of how community composition alters the outcomes of multi-species interactions, support the disseration research of a doctorate student, and provide undergraduate research experience in the field of ecology.

物种在一个复杂的系统中相互作用，它们之间存在许多关系。然而，通常仅针对一个其他物种来研究单个物种。该项目将进行实地和实验室实验，以研究第二种食草动物物种如何影响植物-食草动物-寄生虫系统中的相互作用。它将研究蚜虫（植物汁液饲养者）在烟草-毛毛虫-黄蜂相互作用中的作用，并研究蚜虫的存在如何改变植物化学，这可能会改变毛毛虫和寄生黄蜂相互作用的方式。将测量寄生虫和食草动物的生长速度、寄生虫偏好、飞蛾的产卵决定以及寄生虫感染率。 最后，该项目将研究空间尺度如何改变这些相互作用的结果。这项工作将拓宽我们对群落组成如何改变多物种相互作用结果的理解，支持博士生的论文研究，并提供生态学领域的本科生研究经验。