title: Daily survival rates and dispersal of Aedes aegypti females in Rio de Janeiro, Brazil.
abstract: 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.
authors.affiliation: Laboratório de Transmissores de Hematozoários, Departamento de Entomologia, Instituto Oswaldo Cruz, Fiocruz, Rio de Janeiro, Brazil. freitas@ioc.fiocruz.br
authors.forename: Rafael
authors.initials: R
authors.lastname: Maciel-de-Freitas
authors.forename: Claudia Torres
authors.initials: CT
authors.lastname: Codeço
authors.forename: Ricardo
authors.initials: R
authors.lastname: Lourenço-de-Oliveira
mesh_terms: D000330:Aedes / Q000502:physiology*; D000818:Animals; D001938:Brazil; D017753:Ecosystem; D005260:Female; D008136:Longevity; D010053:Ovary / Q000254:growth & development; D011157:Population Dynamics; D012098:Reproduction / Q000502:physiology; D012621:Seasons