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

By Marcella Pereira da-Cunha, José Bento Pereira Lima, William G Brogdon, Gonzalo Efrain Moya and Denise Valle

Abstract

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

Topics: Aedes aegypti, pyrethroid resistance, knock down effect, Microbiology, QR1-502, Science, Q, DOAJ:Microbiology, DOAJ:Biology, DOAJ:Biology and Life Sciences, Arctic medicine. Tropical medicine, RC955-962, Special situations and conditions, RC952-1245, Internal medicine, RC31-1245, Medicine, R, DOAJ:Internal medicine, DOAJ:Medicine (General), DOAJ:Health Sciences
Publisher: Instituto Oswaldo Cruz, Ministério da Saúde
Year: 2005
DOI identifier: 10.1590/S0074-02762005000400017
OAI identifier: oai:doaj.org/article:7b06a171a77c41a1b524237f3bced66b
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