Brown Heidi E, Cox Jonathan, Comrie Andrew C, Barrera Roberto
Mel and Enid Zuckerman College of Public Health, University of Arizona, 1295 N. Martin Ave., Tucson, AZ 85724.
Department of Molecular and Cellular Biology, University of Arizona, 1007 E, Lowell St., Tucson AZ 85721.
J Med Entomol. 2017 Sep 1;54(5):1385-1389. doi: 10.1093/jme/tjx083.
Understanding the dispersal of Aedes (aegypti (L.) Diptera: Culicidae) after consuming a potentially infectious bloodmeal is an important part of controlling the spread of the arboviruses it transmits. Because of the impact on abundance, removal of oviposition sites is a key component of vector control. However, source reduction around a case may encourage dispersal of potentially infected vectors. We compare the effect of oviposition site availability on Ae. aegypti dispersal behavior within 30-m linear cages in three model ecosystems at the University of Arizona's Biosphere 2 research facility. We found a significant interaction effect in which, when oviposition site density was sparse, dispersal was greater in the highly vegetated humid rainforest and limited in the low vegetation, arid desert model ecosystem. When oviposition site density was dense, no significant effect on dispersal was observed. These analyses support the idea that source reduction has an important influence on the distance that gravid, potentially infected, females will travel.
了解埃及伊蚊（双翅目：蚊科）在摄取可能具有传染性的血餐后的扩散情况，是控制其传播的虫媒病毒传播的重要环节。由于对种群数量有影响，清除产卵场所是病媒控制的关键组成部分。然而，在病例周围减少源头可能会促使潜在感染病媒的扩散。我们在亚利桑那大学生物圈2研究设施的三个模型生态系统中，比较了产卵场所可用性对30米长线性笼子内埃及伊蚊扩散行为的影响。我们发现了一个显著的交互作用效应，即当产卵场所密度稀疏时，在植被茂密的潮湿雨林中扩散更大，而在植被较少的干旱沙漠模型生态系统中扩散受限。当产卵场所密度密集时，未观察到对扩散有显著影响。这些分析支持了这样一种观点，即减少源头对怀有身孕、可能被感染的雌蚊的飞行距离有重要影响。
