Article

Susceptibility and compatibility of Biomphalaria tenagophila from the Río de la Plata basin with Schistosoma mansoni from Brazil

Memórias do Instituto Oswaldo Cruz (ISSN: 1678-8060) Vol 105 Num 4 DOI:oc10086
Source: OAI

ABSTRACT Schistosomiasis has expanded to southern parts of Brazil. Between 2005-2007 the dispersion and the proliferation of Biomphalaria tenagophila z was verified in the province of Corrientes near the Brazilian border. In order to study the possibility that schistosomiasis might spread into the basins of the Paraná and Uruguay Rivers, 440 B. tenagophila collected from 10 populations groups were experimentally exposed to infection with Schistosoma mansoni of the SJ2 strain. Snails from five localities were susceptible. Frandsen’s index (TCP/100) shows that those snails from Mirungá (11%), Aguacerito (2%) and Curupicay (2%) were Class I and not very compatible. Meanwhile, snails from Copra (6%) and Pay-Ubre (22%), in the Paraná River basin, were Class II and poorly compatible.

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Keywords

basins
 
Biomphalaria tenagophila z
 
Brazil
 
Brazilian border
 
Copra
 
Frandsen’s index
 
localities
 
Mirungá
 
Paraná
 
Paraná River basin
 
poorly compatible
 
proliferation
 
Schistosoma mansoni
 
schistosomiasis
 
SJ2 strain
 
southern parts
 
Uruguay Rivers
 

Carlos Edgardo Borda