Naturally Occurring Compounds for Control of Harmful Snails
نویسنده
چکیده
Ten naturally occurring compounds have been tested for molluscicidal activity against the fresh water snail, Biomphalaria alexandrina and the white garden snail, Theba pisana. The role of the synergist, piperonyl butoxide (PB) in improving the efficacy of these chemicals was also investigated. The results showed that thymol was the most effective against B. alexandrina snails, followed by trans-anethole, pulegone and cinnamyl aldehyde. In case of T. pisana snails, thymol was found to be the most effective compound followed by eugenol and pulegone. B. alexandrina snails were more susceptible to the tested chemicals than T. pisana. PB enhanced the toxicity of some of the tested chemicals, particularly against B. alexandrina. The toxic effect of these chemicals alone against the two tested snails was less active than the standard molluscicides. However, the mixture of thymol, eugenol or benzyl alcohol with PB notably increased the molluscicidal activity over methiocarb against T. pisana snails.
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