Marcombe Sébastien, Carron A., Darriet Frédéric, Etienne M., Agnew Philip, Tolosa M., Yp-Tcha M. M., Lagneau C., Yébakima André, Corbel Vincent. (2009). Reduced efficacy of pyrethroid space sprays for dengue control in an area of Martinique with pyrethroid resistance. American Journal of Tropical Medicine and Hygiene, 80 (5), p. 745-751. ISSN 0002-9637.
Titre du document
Reduced efficacy of pyrethroid space sprays for dengue control in an area of Martinique with pyrethroid resistance
Marcombe Sébastien, Carron A., Darriet Frédéric, Etienne M., Agnew Philip, Tolosa M., Yp-Tcha M. M., Lagneau C., Yébakima André, Corbel Vincent
Source
American Journal of Tropical Medicine and Hygiene, 2009,
80 (5), p. 745-751 ISSN 0002-9637
In the Caribbean, insecticide resistance is widely developed in Aedes aegypti and represents a serious obstacle for dengue vector control. The efficacy of pyrethroid and organophosphate Ultra-low volume space sprays was investigated in Martinique where Ae. aegypti 6 been shown to be resistant to conventional insecticides. In the laboratory, it wild-field caught Population showed high levels of resistance to deltamethrin, organophosphate (naled), and pyrethrum. Simulated-field trials showed that this resistance call strongly reduce the knock-down effect and mortality of deltamethrin and synergized pyrethrins when applied by thermal-fogging. Conversely., the efficacy of naled was high against insecticide-resistant mosquitoes. Chemical analyses of nettings exposed to the treatments showed a decrease in residues over distance from release for the pyrethroids, and naled was not detected. This finding has important implications for dengue vector control and emphasizes the need to develop innovative strategies to maintain effective control of resistant Ae. aegypti populations.
