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https://www.arca.fiocruz.br/handle/icict/7081
OCCURRENCE OF BIOMPHALARIA COUSINI (MOLLUSCA: GASTROPODA) IN BRAZIL AND ITS SUSCEPTIBILITY TO SCHISTOSOMA MANSONI (PLATYHELMINTHS: TREMATODA)
Author
Affilliation
Fundação Oswaldo Cruz. Centro de Pesquisas René Rachou. Laboratório de Helmintologia e Malacologia Médica. Belo Horizonte, MG, Brazil.
Fundação Oswaldo Cruz. Centro de Pesquisas René Rachou. Moluscário Lobato Paraense. Belo Horizonte, Minas Gerais, Brazil.
Fundação Oswaldo Cruz. Centro de Pesquisas René Rachou. Laboratório de Helmintologia e Malacologia Médica. Belo Horizonte, MG, Brazil.
Fundação Oswaldo Cruz. Centro de Pesquisas René Rachou. Laboratório de Helmintologia e Malacologia Médica. Belo Horizonte, MG, Brazil.
Fundação Oswaldo Cruz. Centro de Pesquisas René Rachou. Moluscário Lobato Paraense. Belo Horizonte, Minas Gerais, Brazil.
Fundação Oswaldo Cruz. Centro de Pesquisas René Rachou. Laboratório de Helmintologia e Malacologia Médica. Belo Horizonte, MG, Brazil.
Fundação Oswaldo Cruz. Centro de Pesquisas René Rachou. Laboratório de Helmintologia e Malacologia Médica. Belo Horizonte, MG, Brazil.
Abstract
In Brazil, there are three intermediate snail vectors and two potential hosts of Schistosoma mansoni. Pre-vious studies showed three variant molecular profiles to B. Amazônica and evidenced intraspecific varia-tions using sequence data. In this context, the aim of this study was to verify whether such differences would correspond to either B. amazônica or B. cousini. The snails were morphologically identified;
PCR–RFLP and sequencing were carried out. Besides, B. cousini were submitted to susceptibility experi-ments to S. mansoni. Noteworthy, morphological data of Brazilian specimens predominantly showed the morphology described for B. amazonica. Nevertheless, PCR–RFLP results exhibited three variant molecular profiles for the specimens previously identified as B. Amazônica and the phylogenetic analyses showed two groups one to B. amazônica and another to B. cousini. Furthermore, B. cousini showed to be susceptible to S. mansoni. These results confirm the occurrence of B. cousiniin Brazil and points to the risk of introduction of schistosomiasis mansoni into new áreas
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