Maciel-de-Freitas Rafael, Codeço Claudia Torres, Lourenço-de-Oliveira Ricardo
Laboratório de Transmissores de Hematozoários, Departamento de Entomologia, Instituto Oswaldo Cruz, Fiocruz, Rio de Janeiro, Brazil.
Am J Trop Med Hyg. 2007 Apr;76(4):659-65.
Daily survival rates, life expectancy, dispersal, and parity are important components of vectorial capacity of Aedes aegypti. These parameters were estimated for mosquito populations from a slum and a suburban district in Rio de Janeiro, during the wet and dry seasons in 2005. In each mark-release-recapture experiment, three cohorts of dust-marked Ae. aegypti females were released. Recaptures were carried out daily in randomly selected houses, using backpack aspirators, adult traps, and sticky ovitraps. Recapture varied between 6.81% and 14.26%. Daily survival was estimated by fitting two alternative models: exponential and nonlinear models with correction for the removal of individuals. Slum area presented higher survival and parity rates (68.5%). Dispersal rates were higher in the suburban area, where a maximum dispersal of 363 m was observed. Results suggest intense risk of dengue epidemic, particularly in the urban area.
日生存率、预期寿命、扩散和繁殖力是埃及伊蚊传播能力的重要组成部分。2005年雨季和旱季期间，对里约热内卢一个贫民窟和一个郊区的蚊虫种群估计了这些参数。在每次标记-释放-再捕获实验中，释放了三批用粉尘标记的埃及伊蚊雌蚊。每天使用背负式吸气器、成虫诱捕器和粘性诱卵器在随机选择的房屋中进行再捕获。再捕获率在6.81%至14.26%之间。通过拟合两种替代模型估计日生存率：指数模型和对个体移除进行校正的非线性模型。贫民窟地区的生存率和繁殖力较高（68.5%）。郊区的扩散率较高，在那里观察到最大扩散距离为363米。结果表明登革热流行风险很高，特别是在市区。
