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vol.23 issue3Lipemic disorders and some associated risk factors in a population on the outs kirts of Greater S. Paulo, SP, BrazilSimulium new synonymies and corrections, with resurrection of Simulium pruinosum Lutz, 1904 (Diptera, Culicomorpha, Simuliidae) author indexsubject indexarticles search
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Revista de Saúde Pública

On-line version ISSN 1518-8787


TELES, Horacio Manuel Santana. Distribution of Biomphalaria tenagophila and B. occidentali in S. Paulo State, Brazil. Rev. Saúde Pública [online]. 1989, vol.23, n.3, pp.244-253. ISSN 1518-8787.

The geographical distribution of Biomphalaria tenagophila (d'Orbigny, 1835) and B. occidentalis Paraense, 1981 in S. Paulo State, Brazil, is described. The first species being the most important intermediate host of Schistosoma mansoni Sambon, 1907. The second species is unsusceptible to transmission. The two species inhabit the limnic environments of great areas of S. Paulo, occasionally in simpatria. The 3,160 samples of mollusks collected between September 1981 and March 1986 were examined. B. tenagophila were identified in 1,062 of these samples from 203 municipalities and B. occidentalis in 255 samples from 97 municipalities. Biogeographical circunstances related to the distribution of the planorbids species are commented on.

Keywords : Biomphalaria tenagophila [geographical distribution]; Biomphalaria occidentalis [geographical distribution]; Schistosomiasis [incidence]; Ecology, vectors.

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