Efeito residual da deltametrina (k-othrine flow sc 50) no controle de triatomíneos em Pirenópolis, Goiás

Abstract

A study of the control effect of deltamethrin (K-Othrine Flow SC 50) in 34 habitional units (house and annexes) infected wilh at least one species of triatominae bugs was performed in the locality of Goianópolis, district of Pirenópolis, State of Goiás, Brazil. Species found were Panstrongylus geniculatus, Rhodnius neglectus, Triatoma pseudomaculata e T.sordida. Deltamethrin was sprayed at the dose of 25 mg/square meter and was ablc to eliminate colonies of the bugs of the 34 houses treated for the period of 12 months. Control of houses at lhe third, sixth, ninth and twefth month did show only dead adult stage bugs. The species more frequently captured was R.neglectus. These findings allow to conclude that: a) the residual effect of deltamethrin was persistent ai least during one year, and was lethal for tbese, little size, winged species; b) finding of adults show a domiciliar invasion, mainly of R.neglectus, which, hence, hás a higher invasive capacity than other species.