Increase in tolerance of Aedes aegypti larvae (Diptera: Culicidae) to the insecticide temephos after exposure to atrazine
Autor(es): Jacquet, M.; Tilquin, M.; Ravanel, P.; Boyer, S.
Resumo: Female Aedes aegypti mosquitoes are vectors of yellow fever, dengue and chikungunya viruses. Pre-exposure of Ae. aegypti larvae to the herbicide atrazine significantly reduced their sensitivity to the organophosphate insecticide temephos. Mosquito larvae pre-exposed for 48 h to non-lethal concentrations of atrazine ranging from 1 to 10 mu g/l commonly encountered in the field, appeared slightly less sensitive to temephos than non-pre-exposed larvae. The effect of a pre-exposure to atrazine on larval tolerance to temephos did not seem to be related to an induction of detoxification processes by this herbicide. No important increase in glutathione transferase, or alpha - and beta -esterase activities was observed in pre-exposed larvae, while P450 monooxygenase activities increased.
Palavras-Chave: Insecticides; Pest control; Public health; Detoxification; Monooxygenase; Dengue; Organophosphates; Aedes aegypti
Imprenta: African Entomology, v. 23, n. 1, p. 110-119, 2015.
Descritores: Aedes aegypti - Virus ; Aedes aegypti - Chikungunya Fever ; Aedes aegypti - Dengue ; Aedes aegypti - Public health
Data de publicação: 2015
