Field Efficacy of New Larvicide Products for Control of Multi-Resistant Aedes aegypti Populations in Martinique (French West Indies)
Autor(es): Marcombe, Sebastien; Darriet, Frederic; Agnew, Philip; Etienne, Manuel; Tcha, Marie Michelle Yp; Yebakima, Andre; Corbel, Vincent
Resumo: World-wide dengue vector control is hampered by the spread of insecticide resistance in Aedes aegypti We report the resistance status of a wild Ae aegypti population from Martinique (Vauclin) to conventional larvicides (Bacillus thuringiensis var israeliensis [Bti] and temephos) and potential alternatives (spinosad, diflubenzuron, and pyriproxyfen) The efficacy and residual activity of these insecticides were evaluated under simulated and field conditions The Vauclin strain exhibited a high level of resistance to temephos a tolerance to insect growth regulators, and full susceptibility to spinosad and Bti In simulated trials, pyriproxyfen and Bti showed long residual activities in permanent breeding containers (28 and 37 weeks), whereas under field conditions they failed to curtail Ae aegypti populations after four weeks Conversely, diflubenzuron and spinosad showed a residual efficacy of 16 weeks, suggesting that these chemicals may be promising alternatives to Bti and temephos for controlling insecticide resistant Ae aegypti populations
Palavras-Chave: Chitin Synthesis Inhibitor; Water-Storage Containers; Sodium-Channel Gene; Pyrethroid Resistance;Pyriproxyfen; Insecticide; Culicidae; Temephos; Diptera; Larvae
Imprenta: American Journal of Tropical Medicine and Hygiene, v. 84, n. 1, p. 118-126, 2011
Identificador do objeto digital: 10.4269/ajtmh.2011.10-0335
Descritores: Aedes aegypti - Larvicide ; Aedes aegypti - Public health
Data de publicação: 2011
