Data/hora: 01/06/2024 10:38:23

Biblioteca(s): | Embrapa Pantanal.
Tipo da produção científica: | Artigo em Periódico Indexado
Circulação/Nível: | Internacional - A
Data corrente: | 14/08/2008
Data da última atualização: | 15/08/2008
Autoria: | HERRERA, H. M.; RADEMAKER, V.; ABREU, U. G. P.; D'ANDREA, P. S.; JANSEN, A. M.
Afiliação: | H. M. Herrera, FIOCRUZ; V. Rademaker, Pensylvania University; Urbano Gomes Pinto de Abreu, M237065; P.S. D?Andrea, FIOCRUZ; A.M. Jansen, FIOCRUZ.
Título: | Variables that modulate the spatial distribution of Trypanosoma cruzi and Trypanosoma evansi in the Brazilian Pantanal.
Ano de publicação: | 2007
Fonte/Imprenta: | Separata de: Acta Tropica, v.1, n.102, p. 55-62, 2007.
Idioma: | Inglês

Conteúdo:

An evaluation was made on howthe landscape and cattle ranching affect the transmission cycles and the patterns of tripanosomatid infection (Trypanosoma cruzi and Trypanosoma evansi) of small wild mammals in the Pantanal. This region comprises a large natural environment with a multiplicity of habitats, wide variety of biodiversity besides the presence of livestock. T. cruzi and T. evansi infections were evaluated by parasitological and serological methods in one preserved and one cattle ranching area. The diversity of
the small mammal fauna showed to be the same in the two studied areas, however, their relative abundance was different. Distinct enzootiological scenarios of both Trypanosomatids could be observed. Transmission of T. cruzi occurred mainly in forested areas, in the two study areas, while T. evansi occurred dispersed among all habitats studied in the unpreserved area. The arboreal rodent Oecomys mamorae, the most abundant species in both areas, displayed high T. cruzi and T. evansi serum prevalence and parasitemias. Also, the caviomorph rodent Thrichomys pachyurus was shown to be an important host due to its expressive relative abundance, prevalence of infection by both trypanosomatid species and a broad range use of habitats. The role of the small mammal fauna in the transmission cycle of both trypanosomes species seems to be distinct according to land use since we found a broad range of T. evansi infected hosts in the preserved area in contrast to cattle ranching area and a half number of the rodents species infected with T. cruzi in unpreserved in comparison to protect area. The present study showed that cattle ranching in this study area did not enhance overall prevalence of T. cruzi infection among small wild mammals. Together with the observation that small mammals diversity in FA is similar to RN area suggest that ranching activity may also not necessarily conduct to biodiversity loss or risk of Chagas disease.

Thesagro: | Trypanosoma Cruzi.
Thesaurus Nal: | epidemiology; habitats; land use; Pantanal; Trypanosoma evansi.
Categoria do assunto: | --
Registro original: | Embrapa Pantanal (CPAP)
Exemplares: | CPAP - (56496-1) - UPC - SP - -- - SP16936 -  - 16936 - DIS