PRF/J: The Dynamics of a Two-Species Prey/Predator/Parasite System: Interactions Between the Ciliate Lambornella clarki and the Mosquito Larva Aedes sierrensis

PRF/J：两种猎物/捕食者/寄生虫系统的动力学：纤毛虫 Lambornella clarki 和蚊子幼虫 Aedes sierrensis 之间的相互作用

• 批准号: 9303260
• 负责人: Joseph Eisenberg
• 金额: --
• 依托单位: Individual Award
• 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: 1994-02-01 至 1997-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9303260&HistoricalAwards=false
• 关键词: PRF; Dynamics; Two; Species; Prey

This is to be a quantitative study of the tri-trophic level, two-species interaction between the western tree hole mosquito Aedes sierrensis and the ciliate Lambornell clarki. Three models will be employed: two will compare a general 3-species prey / predator / parasite system to explore the unique properties of the interaction, while a third model will incorporate size structure and age structure features in addition to extrinsic factors. Model analysis is to focus on understanding three kinds of larval mortality: over-compensatory, compensatory, and decompensatory, each of which has been observed under varying food resource conditions. Sensitivity analysis will be used to determine which parameters are responsible for causing the various mortality types. Finally the model is to be validated through experiments designed to test simulation results. %%% Pollution problems and insect resistance to traditional pesticides necessitate examination of alternative control methods. The potential for biological control agents is great due to their target specificity. It is expected that this investigation will significantly improve our understanding of mechanisms for insect mortality in nature (for example, are they density-dependent?). Results should be very useful in guiding pest control strategies generally.

这是对西部树洞蚊子伊蚊和纤毛虫Lambornell clarki之间三营养水平、两种相互作用的定量研究。将使用三个模型：两个模型将比较一般的三物种捕食者/捕食者/寄生虫系统以探索这种相互作用的独特性质，而第三个模型将除了外部因素外还包括大小结构和年龄结构特征。模型分析的重点是理解三种幼虫的死亡：过度补偿、补偿和失代偿，每种死亡都在不同的食物来源条件下被观察到。将使用敏感性分析来确定哪些参数是导致各种死亡类型的原因。最后，通过设计实验对模型进行验证，以检验仿真结果。污染问题和昆虫对传统杀虫剂的抗药性要求研究替代防治方法。由于其靶标的特异性，生防剂的潜力很大。预计这项研究将显著提高我们对自然界昆虫死亡机制的理解(例如，它们是否依赖于密度？)研究结果在总体上指导害虫控制策略是非常有用的。