Abstract
The molluscicidal activity of powdered nutmeg and mace (Myristica fragrans Houtt.) against the vector snail Lymnaea acuminata was evaluated. The toxicity of both the spices was time- and dose-dependent. The toxicity of mace powder (96 h LC50 = 28.61 mgL−1) was more pronounced than that of nutmeg powder (96 h LC50 = 36.95 mgL−1). Ethanolic extracts of nutmeg and mace were more toxic than their other organic solvent extracts. The ethanolic extract of mace (24 h LC50 = 13.33 mgL−1) was more effective than the ethanolic extract of nutmeg (24 h LC50 = 18.04 mgL−1) in killing the test animals. The 96 h LC50 of column purified fraction of mace was 2.77 mgL−1 whereas that of nutmeg was 3.98 mgL−1. Nutmeg and mace may be used as potent molluscicides.
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