Triatoma patagonica check for this species in other resources - Triatoma infestans check for this species in other resources - Trypanosoma cruzi check for this species in other resources - biotopes - silvatic triatomines - Patagonia"/>
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Memórias do Instituto Oswaldo Cruz
Fundação Oswaldo Cruz, Fiocruz
ISSN: 1678-8060
EISSN: 1678-8060
Vol. 98, No. 8, 2003, pp. 1077-1081
Bioline Code: oc03210
Full paper language: English
Document type: Research Article
Document available free of charge

Memórias do Instituto Oswaldo Cruz, Vol. 98, No. 8, 2003, pp. 1077-1081

 en Ecological Characteristics of Triatoma patagonica check for this species in other resources at the Southern Limit of its Distribution (Chubut, Argentina)
Cristina Wisnivesky-Colli; Darío Vezzani; Silvia M Pietrokovsky; Hugo Scurti & Jorge Iriarte

Abstract

This study aimed at identifying the ecological characteristics of Triatoma patagonica check for this species in other resources Del Ponte 1929 (Hemiptera: Reduviidae) and evaluating the epidemiological importance of this species at its southernmost distribution limit. We carried out two surveys in the Province of Chubut, in summer and in spring, 1998. In each survey, we interviewed local health care agents for triatomine recognition and reports of the bugs, followed by entomological searches in houses and peridomestic and silvatic biotopes. The presence of T. patagonica was confirmed in two of the five localities indicated by interview. In agreement with previous studies, all these positive localities were east of the 11°C isotherm, within the Monte phytogeographic province. Triatomine abundance and infestation levels (in peridomiciles and peridomestic biotopes) were higher in summer than in spring, possibly reflecting adverse environmental conditions such as flood and cold winter weather. In the silvatic environment, we found three adult bugs under rocks in summer. In peridomestic sites bugs were only found associated with chickens, which were also the only blood meal source identified. Infection by Trypanosoma cruzi check for this species in other resources was not detected. We conclude that T. patagonica at its southernmost distribution limit does not represent a risk to public health due to its low abundance, lack of association with humans, and absence of T. cruzi infection.

Keywords
Triatoma patagonica check for this species in other resources - Triatoma infestans check for this species in other resources - Trypanosoma cruzi check for this species in other resources - biotopes - silvatic triatomines - Patagonia

 
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