麻风树籽提取物杀灭钉螺的实验研究

MOLLUSCICIDAL EFFECTS OF EXTRACTS OF JATROPHA CVRCAS' SEEDS ON ONCOMELANIA HUPENSIS

目的 研究麻风树籽提取物杀灭钉螺的效果。方法 采用室内浸杀法,对麻风树籽的乙醇提取物和水提取物的杀螺效果进行观察。结果 麻风树籽乙醇提取物浸杀钉螺24、48 h和72 h的LC_(50)分别为53.7、25.3 mg/L和11.6 mg/L;水提取物浸杀钉螺48 h和72 h的LC_(50)分别为45.6mg/L和26.1 mg/L。结论 麻风树籽乙醇提取物和水提取物对钉螺均具有杀灭作用。麻风树籽是研究植物杀螺剂较有价值的候选植物。

Objective To understand the molluscicidal effects of Jatropha curcas' seeds on On-comelania hupensis. Methods Observations were carried out on the moUuscicidal effects of alcohol extract and water extract of Jatropha curcas' seeds by using immersion method. Results The LC_(50) of the alcohol extract of Jatropha curcas' seeds was 57.3 mg/L for 24 hours immersion,25.3 mg/L for 48 hours and 11.6 mg/L for 72 hours ,respectively. The LC_(50) of the water extract of Jatropha curcas' seeds was 45.6 mg/L for 48 hours and 26.1 mg/L for 72 hours after snails exposed to the extract ,repectively. Conclusion The alcohol extract and water extract of Jatropha curcas' seeds have strong moUuscicidal effect on O. hupensis, So Jatropha curcas' seeds may be one of candidates of potential plant molluscicides.