Molluscicidal Effects of Ageratum conyzoides and Datura stramonium on Bulinus globosus and Lymnea natalensis
Authors: Olofintoye Lawrence Kayode, Olorunniyi Omojola Felix
Abstract:
Schistosomiasis is a vector-borne water-based disease transmitted by Bulinus globosus, causing haematuria in the urine of man, while fascioliasis is a trematode zoonosis infectious transmitted by Lymnaea natalensis causing liver disease in man and animals. Adult Bulinus globosus and Lymnaea natalensis were used for the experiment. Aqueous leaf extract of Ageratum conyzoides and Datura stramonium were prepared into 25, 50, 75, 100, 200 and 400 ppm concentrations. Ten snails of each species were exposed to different concentrations in triplicates, and dechlorinated water was used as control at 24h, 48h, and 72h exposure. The results revealed that 100 ppm of both plants leaves extracts indicated mortality rates between 76.7% and 100% at 24h, 48h, and 72h for both snail species. (P < 0.05). In conclusion, the extract exercised molluscicidal activity to control the snail vector at lethal doses LC50 (66.611-72.021 ppm), CI = 63.083-77.90 ppm and LC90 (92.623-102.350), CI = 87.715-110.12 ppm.
Keywords: Snail, plant leaf, aqueous extract, mortality.
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