Verificação da resposta de miracídios de Schistosoma mansoni a substâncias provenientes de moluscos planorbídeos: pesquisa de substâncias quimiotáxicas

• Autor(a) principal: Brasio, Beatriz de Camargo
• Data de Publicação: 1985
• Outros Autores: Magalhães, Luiz Augusto, Miller, Joseph, Carvalho, José F. de
• Tipo de documento: Artigo
• Idioma: por
• Título da fonte: Revista de Saúde Pública
• Texto Completo: https://www.revistas.usp.br/rsp/article/view/23283
• topic: Biomphalaria glabrata; Biomphalaria tenagophila; Quimiotaxias; Schistosoma mansoni; Biomphalaria glabrata; Biomphalaria tenagophila; Chemotaxis; Schistosoma mansoni

Several substances isolated from SCW (snail conditioned water and from snail hemolymph were tested for a possible chemiotaxic effect on Schistosoma mansoni miracidia. Two strains of miracidia were considered (SJ and BH). Agar plates prepared with one of the substances were exposed to sixty miracidia for five minutes. The number of contacts and contacts with return were counted. Ten replications were made. Eight types (and four sub types) of agar plates were prepared: normal water (control), SCW (Biomphalaria glabrata and B. tenagophila), hemolymph (B. glabrata and B. tenagophila) and amonia, calcium, magnesium, sodium and potassium. Log-linear models were fitted to the data to study the proportions of attraction to each substance and to compare them. Any possible differences in proportions of attraction between the two S. mansoni strains were tested.