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Abstract:

This study aimed at identifying the ecological characteristics of Triatoma patagonica 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 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.

Registro:

Documento: Artículo
Título:Ecological Characteristics of Triatoma patagonica at the Southern Limit of its Distribution (Chubut, Argentina)
Autor:Wisnivesky-Colli, C.; Vezzani, D.; Pietrokovsky, S.M.; Scurti, H.; Iriarte, J.
Filiación:U. Ecologia Reservorios Vectores P., Depto. de Ecologia, Genet. y Evol., Ciudad Universitaria, Nun̈ez (C1428EHA), Buenos Aires, Argentina
Dir. Contr. Patologias Prevalentes, Sistema Prov. Salud Provincia Chubut, Argentina
Palabras clave:Biotopes; Patagonia; Silvatic triatomines; Triatoma infestans; Triatoma patagonica; Trypanosoma cruzi; Argentina; evolutionary adaptation; geographic distribution; health hazard; infestation; nonhuman; review; Triatoma; Triatoma patagonica; Gallus gallus; Hemiptera; Reduviidae; Triatoma infestans; Triatoma patagonica; Trypanosoma; Trypanosoma cruzi
Año:2003
Volumen:98
Número:8
Página de inicio:1077
Página de fin:1081
DOI: http://dx.doi.org/10.1590/S0074-02762003000800018
Título revista:Memorias do Instituto Oswaldo Cruz
Título revista abreviado:Mem. Inst. Oswaldo Cruz
ISSN:00740276
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00740276_v98_n8_p1077_WisniveskyColli

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Citas:

---------- APA ----------
Wisnivesky-Colli, C., Vezzani, D., Pietrokovsky, S.M., Scurti, H. & Iriarte, J. (2003) . Ecological Characteristics of Triatoma patagonica at the Southern Limit of its Distribution (Chubut, Argentina). Memorias do Instituto Oswaldo Cruz, 98(8), 1077-1081.
http://dx.doi.org/10.1590/S0074-02762003000800018
---------- CHICAGO ----------
Wisnivesky-Colli, C., Vezzani, D., Pietrokovsky, S.M., Scurti, H., Iriarte, J. "Ecological Characteristics of Triatoma patagonica at the Southern Limit of its Distribution (Chubut, Argentina)" . Memorias do Instituto Oswaldo Cruz 98, no. 8 (2003) : 1077-1081.
http://dx.doi.org/10.1590/S0074-02762003000800018
---------- MLA ----------
Wisnivesky-Colli, C., Vezzani, D., Pietrokovsky, S.M., Scurti, H., Iriarte, J. "Ecological Characteristics of Triatoma patagonica at the Southern Limit of its Distribution (Chubut, Argentina)" . Memorias do Instituto Oswaldo Cruz, vol. 98, no. 8, 2003, pp. 1077-1081.
http://dx.doi.org/10.1590/S0074-02762003000800018
---------- VANCOUVER ----------
Wisnivesky-Colli, C., Vezzani, D., Pietrokovsky, S.M., Scurti, H., Iriarte, J. Ecological Characteristics of Triatoma patagonica at the Southern Limit of its Distribution (Chubut, Argentina). Mem. Inst. Oswaldo Cruz. 2003;98(8):1077-1081.
http://dx.doi.org/10.1590/S0074-02762003000800018