Dispersive flight and house invasion by Triatoma guasayana and Triatoma sordida in Argentina
| Autor: | N Solarz, Andrea Alberti, Nicolás Schweigmann, Juan Fló, Cristina Wisnivesky Colli, Silvia M. Pietrokovsky, Ricardo E. Gürtler |
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| Rok vydání: | 1993 |
| Předmět: |
Microbiology (medical)
Male lcsh:Arctic medicine. Tropical medicine biology Behavior Animal Ecology lcsh:RC955-962 Trypanosoma cruzi lcsh:QR1-502 Argentina Zoology dispersive flight Triatoma guasayana biology.organism_classification lcsh:Microbiology Triatoma sordida Triatoma infestans Animals Female Triatoma |
| Zdroj: | Memórias do Instituto Oswaldo Cruz, Volume: 88, Issue: 1, Pages: 27-32, Published: MAR 1993 Memórias do Instituto Oswaldo Cruz., Vol 88, Iss 1, Pp 27-32 (1993) |
| ISSN: | 0074-0276 |
| Popis: | Flight activity and invasion of houses by Triatoma sordida and T. guasayana were studied in the Province of Santiago del Estero, Argentina. Spontaneous findings of both species in houses were recorded from 1982 to 1989. Light trap collections were performed in 1982, 1983 and 1984, at the woods surrounding the settlements of Amama (43 houses) and Trinidad (19 houses). Most of the 101 triatomines collected, were unfed and negative for Trypanosoma cruzi. T. guasayana predominated over T. sordida, and both appeared on the lighted screens between 19-31 min (mean 24) after dusk and the catch time was 30-45 min. Although entomological evaluation of 41 houses at Amama performed in September 1985, just before insecticidal spraying, showed that Triatoma infestans predominated, adults of T. guasayana were collected in sleeping places, in 7 houses (17%). Most triatomines invading houses from then up to 1990 were flying T. guasayana (20/27) and females outnumbered males. Three non infected T. guasayana females were fed on man and two T. guasayana males positive for "T. cruzi like" trypanosomes were unfed. Therefore, visiting hungry adults could transmit T. cruzi to people and introduce wild parasites to the domestic cycle. T. guasayana stands as the main potential substitute of T. infestans in the studied area, and it might play there the same role as T. sordida in Brazil. |
| Databáze: | OpenAIRE |
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