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Memórias do Instituto Oswaldo Cruz

Print version ISSN 0074-0276

Mem. Inst. Oswaldo Cruz vol.90 no.3 Rio de Janeiro May/June 1995

http://dx.doi.org/10.1590/S0074-02761995000300002 

Ecology of Triatoma rubrovaria (Hemiptera, Triatominae) in wild and peridomestic environments of UruguaySalvatellaRobertoRosaRaquelBasmadjianYesterPuimeAndresCalegariLuisGuerreroJorgeMartinezMariaMendaroGabrielaBrianoDanielMonteroCarlosWisnivesky-ColliCristina Universidad de la Republica, Instituto de Higiene, Departamento de Parasitología. Unidad de Biología Parasitaria Montevideo Uruguay Municipalidad de Rivera, Departamento de Higiene Uruguay Municipalidad de Artigas, Departamento de Higiene Uruguay Universidad de Buenos Aires, Facultad de Ciencias Exactas y Naturales Argentina 061995903325328This paper describes population structure, spatial distribution and habitat selection of wild and peridomestic populations of Triatoma rubrovaria (Blanchard, 1843). Field studies were carried out at Las Piedras and La Bolsa in the Northern Department of Artigas, Uruguay. A semicircular sampling area, divided in seven or eight triangular sectors was sequentially examined from October 1990 to November 1991. At Las Piedras (typical wild habitat) 1063 T. rubrovaria bugs were collected from 84 of the rocky outcroops ("pedregales"). Abundance varied by season peaking in October-November (spring). Throughout the year, most of the population was made up of third, fourth and fifth instar nymphs; adults were found from October to March. In the peridomestic environment of La Bolsa, however T. rubrovaria was less common and showed a more irregular instar distribution. Colonized ecotopes, were those close to houses. In both sites T. rubrovaria was mainly associated with the geckonid Homonota uruguayensis and the cockroach Blaptica dubia.Triatoma rubrovariatriatomiasisUruguayecologyFull text available only in PDF format.Texto completo disponível apenas em PDF.