Determination of LD50 of the latex of Euphorbia splenders var. hislopii N.E.B (syn. Euphorbia milii Des Moul. var. splendens (Ursch & Leandri) against Achatinafulica (Bowdich, 1822)
Abstract
Different molluscicides have been used in the control of numerous invader species,like the East African land snail. The present study evaluates the effect of in natura latex of Euphorbia splendens var. hislopii against Achatina fulica. Latex toxicity was evaluated by exposure of 120 snails to different latex concentrations (3.75 to 7.50 g/L) for 96 h. Latex toxicity was observed based on the behavior of snails after exposure to the concentrations used. The results indicated LD50 = 4.67 g/L, with minimum and maximum confidence doses of 3.98 and 5.60 g/L, respectively. The confirmation values were χ²= 0.60, df = 2 and p ≥ 0.05. The results obtained reveal the efficiency of latex as a molluscicide, though they suggest the need for supplementary ecotoxicity tests both using Achatin afulica and other species in the same ecosystem.
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References
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