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Memórias do Instituto Oswaldo Cruz
Fundação Oswaldo Cruz, Fiocruz
ISSN: 1678-8060
EISSN: 1678-8060
Vol. 102, No. 7, 2007, pp. 803-807
Bioline Code: oc07146
Full paper language: English
Document type: Research Article
Document available free of charge

Memórias do Instituto Oswaldo Cruz, Vol. 102, No. 7, 2007, pp. 803-807

 en Triatoma mexicana check for this species in other resources (Hemiptera: Reduviidae) in Guanajuato, Mexico: house infestation and seasonal variation
Schettino, Paz María Salazar; Piña, José Santiago Rosales; Wastavino, Gloria Rojas; Bravo, Margarita Cabrera; Blanco, Mauro Vences & Cárdenas, Jorge López

Abstract

Triatoma mexicana check for this species in other resources was described by HerrichSchaeffer in 1848. In 1940, a male specimen was found in Hidalgo. In 1970, this species was recorded in the state of Queretaro. Later, it was registered in Guanajuato and San Luis Potosi. In the present paper we performed an investigation in 545 dwellings from three counties in the state of Guanajuato, Mexico, from March 2003 to May 2004. The search and capture of triatomines were seasonally performed indoors and outdoors. Entomological indexes were calculated. The risk and no risk relations between triatomine presence and housing construction materials were analyzed. Fourteen triatomines were collected indoors and 151 outdoors. The vectors were collected in houses built with either risky and non-risky materials. Adults go indoors but do not settle there, hence, no relationship was found between the building materials and infestation of houses. Conventional interventions like house improvement or insecticide spraying are not efficient for the control of T. mexicana, because its developmental cycle is accomplished outdoors in the area surrounding the houses.

Keywords
Triatoma mexicana - behavior - Chagas disease - Guanajuato

 
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