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Biomphalaria spp. (Preston, 1910) snails in the municipality of Juiz de Fora, Zona da Mata Mineira mesoregion, ate of Minas Gerais, Brazil

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Author(s): Sandra Helena Cerrato Tibiriçá | Elisabeth Cristina Almeida Bessa | Adalberto Mittherofhe | Milton Ferreira de Castro | Omar dos Santos Carvalho | Roberta Lima Caldeira | Liana Konovaloff Jannotti Passos | Ana Márcia Menezes de Mattos | Liliane Sena Pinheiro | Dirany Sacramento e Silva | Fabiana Oliveira Bastos | Gabriela Quirino Andreoli | Glauco Resende Bonato | Elaine Soares Coimbra

Journal: Memórias do Instituto Oswaldo Cruz.
ISSN 0074-0276

Volume: 101;
Start page: 179;
Date: 2006;
Original page

Keywords: Biomphalaria | Biomphalaria straminea | schistosomiasis | geographic distribution | Juiz de Fora | Brazil

ABSTRACT
This study focuses on the geographic distribution of the snail of the genus Biomphalaria and evaluates its infectivity by Schistosoma mansoni in 5264 specimens collected in the municipality of Juiz de Fora, Minas Gerais, Brazil. Of the 31 locations studied, 6 were reservoirs, 11 rudimentary holding ponds, 7 irrigation ditches, 5 lakes, 1 ornamental pond, and 1 waterfall. Intermediate hosts were found only in the rudimentary ponds and ditches, which were 100% positive. Using morphological and molecular analysis techniques, B. tenagophila, B. peregrina, and B. straminea were identified. This is the first report of B. stramínea in the municipality, and evaluation of its infective potential revealed susceptibility of 25.4%. Although we did not find specimens of Biomphalaria infected by S. mansoni, the data obtained indicate the presence of intermediate hosts, especially in the irrigation ditches in Juiz de Fora, and their proximity to contaminated areas.
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Tango Jona
Tangokurs Rapperswil-Jona