关键词: 天南星, 湖北钉螺, 正丁醇提取物

Abstract: Objective To study active components of extract of Arisaema erubescens Schott against Oncomlania hupensis. Methods The snail mortality was calculated. Results The n-Butyl alcohol extract is the best active components against the snails. The mortality of snails is 76.67% and 100% after 100 mg/L n-Butyl alcohol extract treatment for 2 d and 3 d respectively. The molluscicidal activity of the plant tuber is higher than that of the plant overground part. After snails treated with 60 mg/L of n-Butyl alcohol extract from overground part and tuber for 2 d, the mortality of snails is 13.33% and 40.00% and treated for 4 d the mortality is 50.00% and 100% respectively. Conclusion The n-Butyl alcohol extract of tuber of A.erubescens may be the effective components against O.hupensis.