[Molluscicidal effect and toxicity of META-Li on Oncomelania snails in the mountain area].

The molluscicidal effect and toxicity of META-Li were evaluated and compared with niclosamide in Yushan county of Jiangxi Province in August 2008. There are four groups named as META-Li ridge group (1 g/m2), META-Li field group (1 g/m2), niclosamide group (2 g/m2) and control group. At 3 d, 7 d, 15 d and 2 months after drugs sprayed, the corrected mortalities of snails in the 3 groups were considerably higher than those of control (P<0.05). The corrected mortalities in META-Li field group were significantly lower than those of META-Li ridge group and niclosamide group (P<0.05). No adverse effect was observed to non-target organisms in META-Li groups, while fishes, snails and frogs all died at the first day after treated with niclosamide.