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Memórias do Instituto Oswaldo Cruz
Fundação Oswaldo Cruz, Fiocruz
ISSN: 1678-8060
EISSN: 1678-8060
Vol. 104, No. 3, 2009, pp. 481-485
Bioline Code: oc09076
Full paper language: English
Document type: Research Article
Document available free of charge

Memórias do Instituto Oswaldo Cruz, Vol. 104, No. 3, 2009, pp. 481-485

 en Response of Triatoma infestans check for this species in other resources to pour-on cypermethrin applied to chickens under laboratory conditions
Amelotti, Ivana; Catalá, Silvia S & Gorla, David E

Abstract

This article reports the effects of a pour-on formulation of cypermethrin (6% active ingredient) applied to chickens exposed to Triatoma infestans check for this species in other resources , the main vector of Chagas disease in rural houses of the Gran Chaco Region of South America. This study was designed as a completely random experiment with three experimental groups and five replicates. Third instar nymphs were fed on chickens treated with 0, 1 and 2 cc of the formulation. Nymphs were allowed to feed on the chickens at different time intervals after the insecticide application. Third-instar nymphs fed on treated chickens showed a higher mortality, took less blood during feeding and had a lower moulting rate. The mortality rate was highest seven days after the insecticide solution application and blood intake was affected until 30 days after the application of the solution.

Keywords
Triatoma infestans - vector control - Chagas disease - Gran Chaco - cypermethrin - pour-on formulation

 
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