Monitoring of resistance to the pyrethroid cypermethrin in Brazilian Aedes aegypti (Diptera: Culicidae) populations collected between 2001 and 2003.

Autor(es): da-Cunha Marcella Pereira; Lima José Bento Pereira; Brogdon William G; Moya Gonzalo Efrain; Valle Denise

Resumo: Resistance to cypermethrin of different Aedes aegypti Brazilian populations, collected at two successive periods (2001 and 2002/2003), was monitored using the insecticide-coated bottles bioassay. Slight modifications were included in the method to discriminate between mortality and the knock down effect. Although this pyrethroid was recently started to be used in the country to control the dengue vector, a decrease in susceptibility was noted between both periods analyzed, particularly in the city of Rio de Janeiro. The results indicate that resistance is due at least in part to a target site alteration.

Palavras-Chave: Aedes aegypti; Pyrethroid resistance; Knock down effect

Imprenta: Memo?rias do Instituto Oswaldo Cruz, v. 100, n. 4, p. 441-444, 2005

Identificador do objeto digital: 10.1590/S0074-02762005000400017

Descritores: Aedes aegypti - Dengue ; Aedes aegypti - Public health

Data de publicação: 2005