Ciências Veterinárias
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Programa de Pós-Graduação em Ciências Veterinárias
Centro: CCAE
Telefone: (28) 3552 8983
URL do programa: http://www.cienciasveterinarias.ufes.br/pos-graduacao/PPGCV
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Navegando Ciências Veterinárias por Autor "Almeida, Bethânia Ribeiro de"
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- ItemMalacologia dos gêneros Lymnaea e Biomphalaria na mesoregião sul espírito-santense, e avaliação de extratos de Melia Azadirachta indica e Cymbopogon winterianus como agentes moluscicidas(Universidade Federal do Espírito Santo, 2010-08-27) Almeida, Bethânia Ribeiro de; Martins, Isabella Vilhena Freire; Pereira Júnior, Olavo dos Santos; Nunes, Louisiane de Carvalho; Bastos, Jairo KenuppMollusks of the genders Biomphalaria and Lymnaea have great medical importance as intermediate hosts of the parasites Schistosoma mansoni and Fasciola hepatic. In this study, the occurrence of these mollusks was evaluated in 14 counties located in the catchments of the following rivers: Itapemirim, Itabapoana and Benevente in Southern Espírito Santo State, Brazil. The species B. tenagophila e L. columella were found in all counties assessed. Furthermore, the tolerance of these mollusks to molluscicides and their low selectivity raises concerns and show the importance of finding new vegetable biodegradable substances to control these mollusks. This study assessed the use of vegetable extracts originated from Melia azedarach var azedarach, Azadirachta indica A. Juss, and Cymbopogon winterianus as natural molluscicides. Hidroalcoholic, ethyl acetate and hexane crude extracts, obtained from leaves of plants, such as chinaberry, neem and citronella, were tested as molluscicides against Lymnaea columella, which is the intermediate host of Fasciola hepatica. The low concentration extracts of neem, citronella and chinaberry diluted in ethanol, ethyl acetate and hexane shown to be effective in controlling snails and inhibiting the oviposition of shellfish, preventing its reproduction, and, therefore, the spread of these parasitic diseases.