Abstract
This 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 rubrovaria; triatomiasis; Uruguay; ecology
Ecology of Triatoma rubrovaria (Hemiptera, Triatominae) in wild and peridomestic environments of Uruguay
Roberto Salvatella1
Raquel Rosa1
Yester Basmadjian1
Andres Puime1
Luis Calegari1
Jorge Guerrero1
Maria Martinez1
Gabriela Mendaro1
Daniel Briano2
Carlos Montero3
Cristina Wisnivesky-Colli4
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
This 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.
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Publication Dates
-
Publication in this collection
01 June 2009 -
Date of issue
June 1995
