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Memórias do Instituto Oswaldo Cruz
Fundação Oswaldo Cruz, Fiocruz
ISSN: 1678-8060
EISSN: 1678-8060
Vol. 110, No. 3, 2015, pp. 394-402
Bioline Code: oc15051
Full paper language: English
Document type: Research Article
Document available free of charge

Memórias do Instituto Oswaldo Cruz, Vol. 110, No. 3, 2015, pp. 394-402

 en Infection with Trypanosoma cruzi TcII and TcI in free-ranging population of lion tamarins ( Leontopithecus check for this species in other resources spp): an 11-year follow-up
Lisboa, Cristiane Varella; Monteiro, Rafael Veríssimo; Martins, Andreia Fonseca; das Chagas Xavier, Samantha Cristina; dos Santos Lima, Valdirene & Jansen, Ana Maria

Abstract

Here, we present a review of the dataset resulting from the 11-years follow-up of Trypanosoma cruzi infection in free-ranging populations of Leontopithecus rosalia check for this species in other resources (golden lion tamarin) and Leontopithecus chrysomelas check for this species in other resources (golden-headed lion tamarin) from distinct forest fragments in Atlantic Coastal Rainforest. Additionally, we present new data regarding T. cruzi infection of small mammals (rodents and marsupials) that live in the same areas as golden lion tamarins and characterisation at discrete typing unit (DTU) level of 77 of these isolates. DTU TcII was found to exclusively infect primates, while TcI infected Didelphis aurita check for this species in other resources and lion tamarins. The majority of T. cruzi isolates derived from L. rosalia were shown to be TcII (33 out 42) Nine T. cruzi isolates displayed a TcI profile. Golden-headed lion tamarins demonstrated to be excellent reservoirs of TcII, as 24 of 26 T. cruzi isolates exhibited the TcII profile. We concluded the following: (i) the transmission cycle of T. cruzi in a same host species and forest fragment is modified over time, (ii) the infectivity competence of the golden lion tamarin population fluctuates in waves that peak every other year and (iii) both golden and golden-headed lion tamarins are able to maintain long-lasting infections by TcII and TcI.

Keywords
Trypanosoma cruzi; wild free-ranging mammals; Atlantic Rainforest; reservoir host; sylvatic transmission cycle; discrete typing unit; DTU

 
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