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Memórias do Instituto Oswaldo Cruz
Fundação Oswaldo Cruz, Fiocruz
ISSN: 1678-8060
EISSN: 1678-8060
Vol. 100, No. 4, 2005, pp. 441-444
Bioline Code: oc05110
Full paper language: English
Document type: Research Article
Document available free of charge

Memórias do Instituto Oswaldo Cruz, Vol. 100, No. 4, 2005, pp. 441-444

 en Monitoring of resistance to the pyrethroid cypermethrin in Brazilian Aedes aegypti check for this species in other resources (Diptera: Culicidae) populations collected between 2001 and 2003
Marcella Pereira da-Cunha; José Bento Pereira Lima; William . Brogdon; Gonzalo Efrain Moya & Denise Valle

Abstract

Resistance to cypermethrin of different Aedes aegypti check for this species in other resources 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.

Keywords
Aedes aegypti - pyrethroid resistance - knock down effect

 
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