MOLECULAR AND QUANTITATIVE VARIATION IN AE ALBOPICTUS

这项建议的目标是评估范围迅速扩大的遗传后果，并评估携带疾病的蚊子物种内的微生境特化。 亚洲虎蚊，白纹伊蚊，是登革热的重要媒介，也能够传播黄热病和多种北美本地虫媒病毒。 白纹伊蚊于1980年代中期在德克萨斯州休斯顿附近被引入美国，其分布范围现在从佛罗里达扩展到伊利诺斯州和俄亥俄州。 比较祖先（TX）和衍生（FL，OH）人群之间的群体内和群体间的变异性将阐明如何在连锁位点的遗传漂变，迁移和选择分布在北美这个物种的范围扩展的变异。 为了评估分子变异，AFLP标记将被开发并用于表征整个北美的种群结构，以及轮胎育种和树洞育种种群之间的种群结构。 将研究该物种在北美的快速入侵和气候适应的数量性状的遗传变异和分化，并用于研究AFLP标记的变异和分化在多大程度上准确预测数量性状的变异和分化。

The goals of this proposal are to evaluate the genetic consequences of a rapid range expansion and to assess micro- habitat specialization within a species of disease carrying mosquito. The Asian tiger mosquito, Aedes albopictus, is an important vector of dengue fever and is also able to transmit yellow fever and a variety of native North American arboviruses. Aedes albopictus was introduced into the United States in the vicinity of Houston, TX, in the mid- 1980's, and its distribution now extends from Florida to Illinois and Ohio. Comparing within- and between-population variability among ancestral (TX) and derived (FL, OH) populations will elucidate how genetic drift, migration, and selection at linked loci have distributed variability during the range expansion of this species in North America. In order to assess molecular variation, AFLP markers will be developed and used to characterize population structure throughout North America, and between tire breeding and tree-hole breeding populations. Genetic variation and differentiation of quantitative characters central to the rapid invasion and climatic adaptation of this species in North America will be examined, and used to investigate the extent to which variation and differentiation of AFLP markers accurately predicts variation and differentiation of quantitative characters.