Please use this identifier to cite or link to this item: https://www.arca.fiocruz.br/handle/icict/31924
Title: Development of a Trypanosoma cruzi (TcI) isolate in the digestive tract of an unfamiliar vector, Triatoma brasiliensis (Hemiptera, Reduviidae)
Authors: Araújo, Catarina A. C.
Waniek, Peter J.
Jansen, Ana Maria
Affilliation: Fundação Oswaldo Cruz. Instituto Oswaldo Cruz. Laboratório de Biologia de Tripanosomatídeos. Rio de Janeiro, RJ. Brasil.
Fundação Oswaldo Cruz. Instituto Oswaldo Cruz. Laboratório de Biologia de Tripanosomatídeos. Rio de Janeiro, RJ. Brasil.
Fundação Oswaldo Cruz. Instituto Oswaldo Cruz. Laboratório de Biologia de Tripanosomatídeos. Rio de Janeiro, RJ. Brasil.
Abstract: Triatoma brasiliensis is an important vector of Trypanosoma cruzi, commonly found in semi-arid areas of north-eastern Brazil. T. cruzi (TcI) is a widely distributed genotype in all biomes of Brazil. To evaluate selective pressures exerted by a vector species on the development of TcI derived from a different biome (Atlantic Rainforest), T. brasiliensis larvaewere infected with the MDID/BR/1994/C48 isolate. Parasite densities of T. cruzi were determined in three regions of the gut at 3, 5 and 10 days after feeding. Percentages of the different stages of the flagellatewere identified in Giemsa stained smears. The TcI isolate possessed always significantly higher densities in the rectum than in the small intestine. Epimastigotes reached their highest percentage at 3 days after feeding in the small intestine and trypomastigotes at 10 days after feeding in the rectal wall. Additionally, high metacyclogenesis rates in the T. brasiliensis gut showed competence of this TcI strain to complete its life cycle in this unfamiliar vector species.
Keywords: Trypanosoma cruzi
Triatoma brasiliensis
Trypomastigote
Epimastigote
Blood ingestion
Metacyclogenesis
keywords: Trypanosoma cruzi
Triatoma brasiliensis
Epimastigota
Ingestão de sangue
Metaciclogênese
Trypomastigote
Issue Date: 2008
Publisher: Elsevier
Citation: ARAÚJO, Catarina A. C.; WANIEK, Peter J.; JANSEN, Ana Maria. Development of a Trypanosoma cruzi (TcI) isolate in the digestive tract of an unfamiliar vector, Triatoma brasiliensis (Hemiptera, Reduviidae). Acta Tropica, v.107, p.195–199, 2008.
DOI: 10.1016/j.actatropica.2008.05.024
ISSN: 0001-706X
Copyright: restricted access
Appears in Collections:IOC - Artigos de Periódicos

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