Triatoma rubrovaria check for this species in other resources - ecological observations - ecotopes - trophic resource - Rio Grande do Sul - Brazil"/>
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Memórias do Instituto Oswaldo Cruz
Fundação Oswaldo Cruz, Fiocruz
ISSN: 1678-8060
EISSN: 1678-8060
Vol. 97, No. 8, 2002, pp. 1127-1131
Bioline Code: oc02246
Full paper language: English
Document type: Research Article
Document available free of charge

Memórias do Instituto Oswaldo Cruz, Vol. 97, No. 8, 2002, pp. 1127-1131

 en Triatoma rubrovaria check for this species in other resources (Blanchard, 1843) (Hemiptera, Reduviidae, Triatominae) II: Trophic Resources and Ecological Observations of Five Populations Collected in the State of Rio Grande do Sul, Brazil
Carlos Eduardo Almeida; Rosemere Duarte; Raquel Guerra do Nascimento; Raquel S Pacheco & Jane Costa

Abstract

Triatoma rubrovaria check for this species in other resources has become the most frequently captured triatomine species after the control of T. infestans in the State of Rio Grande do Sul (RS), Brazil. Isoenzymatic and chromatic studies indicate the existence of, at least, two distinct phenotypic patterns of T. rubrovaria in RS. The geographic variation noted through molecular tools may also result in distinct profiles of vectorial potentiality. In order to enhance our understanding of the bionomic knowledge of T. rubrovaria separate batches of the species were collected from different municipalities of RS distant from 72 to 332 km: Santana do Livramento (natural ecotope), Santana do Livramento (artificial ecotope), Santiago (natural ecotope), Canguçu (peridomicile) and Encruzilhada do Sul (natural ecotope). A total of 285 specimens were collected, 85 specimens kept sufficient fecal material in their guts for the precipitin analysis. The results indicated the food eclecticism for this species and the anti-rodent serum showed the highest positivity in most localities. From the total of analyzed samples, only 1.3% of unique positivity for human blood was registered, all of them for Santiago population. This reactivity to human blood may be associated to pastures activities in the field.

Keywords
Triatoma rubrovaria check for this species in other resources - ecological observations - ecotopes - trophic resource - Rio Grande do Sul - Brazil

 
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