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	Provedor de dados BABT (2) Autor Vasconcellos,Maurício Carvalho (2) Diniz,Antônia Gonçalves (1) Lopes,Fátima Eliana Ferreira (1) Pinheiro,Jairo (1) Santos,José Augusto Albuquerque dos (1) Schall,Virgínia Torres (1) Silva,Ivonise Paz da (1) Soído,Cristiane (1) Mais... Palavra-chave Biomphalaria sp. (1) Bradybaena similaris (1) Bulinus sp. (1) Calcium determination technique (1) Euphorbia splendens var. hislopii (1) Molluscicidal activity (1) PH variation (1) Shell (1) Snail (1) Mais... Tipo do documento Info:eu-repo/semantics/article (2) Ano 2009 (1) 2003 (1) País Brazil (2) Idioma Inglês (2)		Ordenar por:  Relevância Autor Título Ano Registros recuperados: 2 Primeira ... 1 ... Última An improvement of calcium determination technique in the shell of molluscs BABT Soído,Cristiane; Vasconcellos,Maurício Carvalho; Diniz,Antônia Gonçalves; Pinheiro,Jairo. The complexometric method is usually applied to quantitative calcium determination in different materials; however the application of this method to calcium determination in molluscs shells infers significant interferences to the results. The snail Bradybaena similaris, a terrestrial gastropod, was used as experimental model to the improvement of this method. The shells were calcinated and dissolved in nitric acid, the hydrogen peroxide was also used to clarify the medium after the acid addition. The calcination procedure and the use of nitric acid reduced the significantly the interferences, allowing a major degree of destruction of the organic substances of the shell. The improvement of the calcium determination technique usually employed showed calcium... Tipo: Info:eu-repo/semantics/article Palavras-chave: Snail; Bradybaena similaris; Shell; Calcium determination technique. Ano: 2009 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132009000100012 Molluscicidal activity of crown of Christ (Euphorbia splendens var. hislopii) (Euphorbiaceae) latex submitted to pH variation BABT Vasconcellos,Maurício Carvalho; Santos,José Augusto Albuquerque dos; Silva,Ivonise Paz da; Lopes,Fátima Eliana Ferreira; Schall,Virgínia Torres. Laboratory and field bioassays have confirmed the specificity of the molluscicidal activity of the Euphorbia splendens var. hislopii latex (crown of Christ) (Euphorbiaceae) over snails of the species Biomphalaria glabrata, B. tenagophila, B. straminea, B. pfeifferi and Bulinus sp. in the control of Schistosoma mansoni. In the present study, the effect of the pH variation on lethal concentration (LC90) over B. tenagophila was evaluated. Bioassays with the aqueous solutions of the latex ranging from 0.4 to 12 µl/l were adjusted for pH of 5.0; 6.0; 7.0 and 8.0, and tested in accordance with methods standardized by World Health Organization. The results obtained indicated that the minor concentration of the latex occurred at pH 6.0 (LC90 = 3.2 µl/l) and the... Tipo: Info:eu-repo/semantics/article Palavras-chave: Euphorbia splendens var. hislopii; Molluscicidal activity; PH variation; Biomphalaria sp.; Bulinus sp.. Ano: 2003 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132003000300013 Registros recuperados: 2 Primeira ... 1 ... Última

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