Triatoma mexicana (Hemiptera: Reduviidae) in Guanajuato, Mexico: house infestation and seasonal variation.
Triatoma mexicana was described by Herrich-Schaeffer 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.
Departamento de Microbiología y Parasitología, Facultad de Medicina, Universidad Nacional Autónoma de México, Mexico, DF. pazmar@servidor.unam.mx
Paz María
PM
Salazar Schettino
José Santiago
JS
Rosales Piña
Gloria
G
Rojas Wastavino
Margarita
M
Cabrera Bravo
Mauro
M
Vences Blanco
Jorge
J
López Cárdenas
D000818:Animals; D014355:Chagas Disease / Q000469:parasitology / Q000635:transmission; D003252:Construction Materials / Q000469:parasitology; D005260:Female; D006798:Housing; D007303:Insect Vectors / Q000469:parasitology*; D008297:Male; D008800:Mexico; D011156:Population Density; D012307:Risk Factors; D012621:Seasons; D014224:Triatoma / Q000502:physiology