GEOGRAPHIC VARIATION IN AEDES TRISERIATUS

三纹伊蚊的地理变异

• 批准号: 3436833
• 负责人: STEVEN A JULIANO
• 金额: $ 10.12万
• 依托单位: ILLINOIS STATE UNIVERSITY
• 依托单位国家: 美国
• 财政年份: 1990
• 资助国家: 美国
• 起止时间: 1990-06-01 至 1993-05-31
• 项目状态: 已结题
• 来源: https://reporter.nih.gov/project-details/3436833
• 关键词: Culicidae; animal ecology; animal population density; animal population genetics; animal population study; climate; encephalitis virus; field study; food chain; genetic polymorphism; genetic strain; geographic site; immature animal; laboratory mouse; life cycle; predation; species difference; statistics /biometry

Aedes triseriatus is a tree hole-breeding mosquito that is a vector of LaCrosse encephalitis virus. Across its range, A. triseriatus encounters vastly different biotic and antibiotic environments. Predation on larvae by Toxorhynchites rutilus, the length of the active season, and number of potential competitors all increase from north to south. Correlated with these environmental differences are differences in vulnerability to predation, vulnerability to starvation, population growth rate, and behavior. Analysis of geographic variation in A. triseriatus is important for understanding the medical impact of this species. The long term goal of this research is to test hypotheses that differing predation, climatic, and/or competitive regimes have selected for geographic differences in population characteristics. During this proposed project, laboratory experiments with several strains of A. triseriatus will test for geographic variation in the relationship of size and fecundity. Behavior of larvae will be compared across several populations to test whether known differences in behavior are consistently correlated with the presence of T. rutilus. Experimental observations will be used to test whether behavioral differences are related to vulnerability to predation. The effects of temperature on geographic differences in population response to predation and food availability will be tested in two experiments. Competitive ability against Aedes albopictus will be determined for several strains of A. triseriatus, in order to test the hypothesis that competitive ability is consistently correlated with the presence of T. rutilus.

三列伊蚊是一种在树洞中繁殖的蚊子， 长曲棍球脑炎病毒。 在其分布范围内，A.三列相遇 生物和抗生素环境的巨大差异。 捕食幼虫 由Toxorhynchites rutilus，活动季节的长度，和数量 潜在的竞争者从北到南都在增加。 相关 这些环境差异是脆弱性的差异， 捕食，饥饿脆弱性，人口增长率， 行为 分析了A.三列虫很重要 了解这个物种的医学影响。 长期目标 这项研究的目的是检验不同的捕食，气候， 和/或竞争制度选择的地理差异， 人口特征 在这个项目中，实验室 用几株A. tristeriatus将测试地理 大小和繁殖力关系的变化。 幼虫行为 将在几个人群中进行比较，以测试是否已知 行为的差异始终与T的存在相关。 红宝石。 实验观察将用于测试行为是否 差异与易被捕食有关。 的影响 温度对种群捕食反应地理差异的影响 和食物供应将在两个实验中进行测试。 竞争 抗白纹伊蚊的能力将被确定为几个菌株， A.为了检验竞争能力是一种 与T.红宝石。