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Memórias do Instituto Oswaldo Cruz
Fundação Oswaldo Cruz, Fiocruz
ISSN: 1678-8060
EISSN: 1678-8060
Vol. 99, No. 4, 2004, pp. 433-437
Bioline Code: oc04076
Full paper language: English
Document type: Research Article
Document available free of charge

Memórias do Instituto Oswaldo Cruz, Vol. 99, No. 4, 2004, pp. 433-437

 en Insecticide and Community Interventions to Control Triatoma dimidiata check for this species in other resources in Localities of the State of Veracruz, Mexico
Gloria Rojas Wastavino; Margarita Cabrera-Bravo; Guadalupe García De La Torre; Mauro Vences-Blanco; Adela Ruiz Hernández; Martha Bucio Torres; Yolanda Guevara Gómez; Alejandro Escobar Mesa & Paz María Salazar Schettino

Abstract

Three different interventions to control Triatoma dimidiata check for this species in other resources in the State of Veracruz were implemented: X-1 = whole dwelling spraying, X-2 = middle wall spraying, X-3 = household cleaning. Cyfluthrin was sprayed 3 times with 8 month intervals. After each spraying, insects were collected and sent to the laboratory to be recorded and to determine genus and species of the adult triatomine bugs, and nymphs were counted. Trypanosoma cruzi check for this species in other resources presence was determined. With X-1, the infestation, colonization, and natural infection indexes were reduced to 0% in the 3 localities, with respect to t. With X-2, the infestation index was reduced to 10% at t3 in 3 localities; the colonization index was reduced to 0% in only 1 locality at t3, and the natural infection index was reduced to 0% at t3. With X-3 the 3 indexes were not effectively reduced but they decreased with respect to the baseline study. Insecticide application to the whole dwelling is a more efficient intervention than its application to only the lower half of the walls and to the cleaning of houses.

Keywords
Triatoma dimidiata - control - pyrethroid insecticide spraying - entomological indexes - Mexico

 
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