Age-dependent survival of the dengue vector Aedes aegypti (Diptera : Culicidae) demonstrated by simultaneous release-recapture of different age cohorts
Autor(es): Harrington, Laura C.; Vermeylen, Francoise; Jones, James J.; Kitthawee, Sangvorn; Sithiprasasna, Ratana; Edman, John D.; Scott, Thomas W.
Resumo: The assumption that mosquito survival remains constant and that it is independent of age was tested with free-ranging Aedes aegypti (L.) (Diptera: Culicidae) by using a "synthetic cohort" mark-release-recapture method. Mosquito age cohorts (1-2, 3-4, and 19-20 d) were released simultaneously in homes in rural Thai villages during dry and rainy seasons (2002). Significant age-dependent effects were detected during the dry and rainy seasons. More young than older mosquitoes were recaptured (1-4 versus 5-20 d). The best predictive fit for recaptures was obtained using a quadratic function of age. Our results provide the first field-based evidence for age-dependent Ae. aegypti mortality in which the death rate increases with advancing age and highlight the need for research on ecological and epidemiological aspects of this process.
Palavras-Chave: Aedes aegypti; Synthetic cohort; Age; Survival; Thailand
Imprenta: Journal of Medical Entomology, v. 45, n. 2, p. 307-313, 2008
Identificador do objeto digital: 10.1603/0022-2585(2008)45[307:ASOTDV]2.0.CO;2
Descritores: Aedes aegypti - Infectious diseases ; Aedes aegypti - Dengue ; Aedes aegypti - Epidemiology ; Aedes aegypti - Public health
Data de publicação: 2008
