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Schistosomiasis affects over 200 million people and a matter of concern for public health. One of the methods of combating the disease is through control of the snails of the species Biomphalaria glabrata . To evaluate the molluscicidal activity of Anadenanthera colubrina bark extract on embryos and adults of the species B. glabrata and on Artemia salina . The A. salina were exposed for 24 h to A. colubrina extract (0.125, 0.25, 0.5 and 1.0 mg/mL) diluted in sea water, while B. glabrata snails were exposed to the same period the extract (0.125, 0.25, 0.5, 0.6, 0.7 and 1.0 mg/mL) diluted in filtered and dechlorinated water. We observed that the extract at a concentration of 0.125 mg/mL showed low toxicity for A. salina used in relation to other concentrations. In the assay with B. glabrata snails were observed in adults the concentration of 0.25 mg/mL caused 80% mortality. In embryos, concentrations of 0.125; 0.25 and 0.5 mg/mL did not affect the embryo viability when compared with control group. The results show that the aqueous extract of A. colubrina demonstrated potential to be used as a biodegradable molluscicide to combat snails of the species B. glabrata .

Evaluation of molluscicidal activity of Anadenanthera colubrina extracts on adult mollusc and embryos of the species Biomphalaria glabrata (Say, 1818)