Perfil alimentario de Triatoma rubrovaria (Blanchard, 1843) (Hemiptera, Triatominae) en ámbitos peridomiciliarios, de una localidad rural de Uruguay

Abstract

It has been studied the feeding patterns of Triatoma rubrovaria (wild triatominae bug, and intradomiciliary secondary vector of T. cruzi) in a rural area of "La Bolsa" (Department of Artigas). Agar double diffusion test were used for analyze the blood meal, from 120 insects, which were confronted to 13 antisera. It has 251 identify blood meals, and the most frequently was mammalian host (73%), but it has a variable source of feeding (mammals, birds, reptiles and cockroach), including humans rate 8% of the total. The identify of haemolimphe as feed, place this triatominae bug as an intermediary vector between predator and haematophagous. The most usual mammals are dasypodides and bovines. The frequence of human blood meal near the dwellings, shows its potentiality as vectors. Therefore, the peridomicile is an area of interaction between, domestic, wild and sinantropic host. The trypanosomic infection's rate at peridomiciles was lesser those at wild areas.

Ecological aspects of Rhodnius nasutus Stål, 1859 (Hemiptera: Reduviidae: Triatominae) in palms of the Chapada do Araripe in Ceará, Brazil

“…Fifty-two specimens did not react with any antiserum, suggesting that they had fed on other vertebrates not included in the battery of antisera employed. The possibility of predation by R. nasutus should not be completely discounted, with insects feeding on the haemolymph of other arthropods of the palm biocenose, as has been observed for other species of triatomines (Lent & Wygodzinsky 1979, Salvatella et al 1994, Sandoval et al 2000. One important observation from the present study was the high number of insects with insufficient blood for analysis, which may be related to the scarcity of vertebrate hosts in the palms.…”

Triatomíneos rupestres infectados por Trypanosomatidae, coletados em Quaraí, Rio Grande do Sul, 2003

“…Nos exemplares de T. rubrovaria coletados, o índice de infecção pelo T. cruzi foi de 1,6%, maior que o encontrado por Salvatella e cols 17 no Uruguai com 0,3% dos triatomíneos infectados. O encontro de ninfas positivas em seis localidades demonstra que o ciclo silvestre está instalado no município.…”

Characterization of Triatoma guasayana biotopes in a hardwood forest of Santiago del Estero, Argentina

“…commun.) under experimental and natural conditions and for T. rubrovaria in the field (Salvatella 1994). On the other hand, Ryckman and Olsen (1965) demonstrated experimentally the impact of wood rat predation on T. protracta.…”