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BIOLOGICAL CONTROL OF BIOMPHALARIA TENAGOPHILA (MOLLUSCA, PLANORBIDAE). A SCHISTOSOMIAIS VECTOR, USING THE FISH GEOPHAGUS BRASIIENSIS (PISCES, CICHLIDAE) IN THE LABORATORY OR IN A SEMINATURAL ENVIRONMENT
Geophagus brasiliensis
Biomphalaria Tenagophila
Esquistossomose
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Affilliation
Fundação Oswaldo Cruz. Instituto Oswaldo Cruz. Departamento de Biologia. Laboratório de Comportamento Animal. Rio de Janeiro, RJ, Brasil.
Universidade do Estado do Rio de Janeiro. Rio de Janeiro, RJ, Brasil.
Universidade do Estado do Rio de Janeiro. Rio de Janeiro, RJ, Brasil.
Abstract
In order to investigate a possible method of biological control of schistosomiasis, we used the fish Geophagus brasiliensis (Quoy & Gaimard, 1824) which is widely distributed throughout Brazil, to interrupt the life cycle of the snail Biomphalaria tenagophila (Orbigny, 1835), an intermediate host of Schistosoma mansoni. In the laboratory, predation eliminated 97.6% of the smaller snails (3-8 mm shell diameter) and 9.2% of the larger ones (12-14 mm shell diameter). Very promising results were also obtained in a seminatural environment. Studies of this fish in natural snail habitats should be further encouraged.
Keywords in Portuguese
Controle biológicoGeophagus brasiliensis
Biomphalaria Tenagophila
Esquistossomose
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