Increase in tolerance of Aedes aegypti larvae (Diptera: Culicidae) to the insecticide temephos after exposure to atrazine - Archive ouverte HAL Accéder directement au contenu
Article Dans Une Revue African Entomology Année : 2015

Increase in tolerance of Aedes aegypti larvae (Diptera: Culicidae) to the insecticide temephos after exposure to atrazine

Résumé

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 μg/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.Noimportant increase in glutathione transferase, or a- and b-esterase activities was observed in pre-exposed larvae, while P450 monooxygenase activities increased.
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hal-01290772 , version 1 (18-03-2016)

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M. Jacquet, M. Tilquin, P. Ravanel, Sebastien Boyer. Increase in tolerance of Aedes aegypti larvae (Diptera: Culicidae) to the insecticide temephos after exposure to atrazine. African Entomology, 2015, 23 (1), pp.110-119. ⟨10.4001/003.023.0116⟩. ⟨hal-01290772⟩
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