摘要
目的 探索银杏果皮制剂杀灭钉螺的效果。方法 采用 0 .3% - 3.0 % 6种不同浓度制剂 ,室内浸杀法观察杀螺效果。结果 1.0 %银杏果皮液浸泡钉螺 2 4、4 8、72 h后的 L C50 分别为2 8.8、12 .6 mg/ L 和 0 .4 8m g/ L;用 2 .0 %浸泡钉螺 2 4、4 8、72 h后的 L C50 分别为 19.9、11.2 m g/ L 和0 .4 8m g/ L;用 3.0 %浸泡钉螺 2 4、4 8、72 h的 L C50 分别为 19.1、10 .9mg/ L 和 0 .4 8mg/ L,显示不同浓度均有杀螺作用 ,随着浓度的提高 ,杀螺作用增强。并且 ,其对农作物及鱼的毒性极低。结论 银杏果外皮制剂有较高的杀螺作用 ,是一种高效、低毒 ,有进一步研究价值的候选或配伍的杀钉螺药物。
Objective To understand the molluscicidal effects of water extract of Ginkgo biloba's peel on Oncomelania hupensis Methods Immersion methods with a series of six concentrations from 0.3 percent to 3 percent were used to determine the molluscicidal effect. Results The LC 50 of the water extract of 1.0 percent was 28.8 mg/L for 24 hours immersion,12.6 mg/L for 48 hours,and 0.48 mg/L for 72 hours, respectively. The LC 50 of the extract of 2 percent was 19.9 mg/L for 24 hours,11.2 mg/L for 48 hours and 0.48 mg/L for 72 hours,respectively.The LC 50 of the extract of 3 percent was 19.1 mg/L for 24 hours,10.9 mg/L for 48 hours and 0.48 mg/L for 72 hours,respectively. The higher of the concentration, the better of the effect. Meantime, it's poisoning to crops and fishes was very low. Conclusion Ginkgo biloba's peel has molluscicidal effect. It is a good candidate of potential plant molluscicides.
出处
《中国血吸虫病防治杂志》
CAS
CSCD
2003年第1期61-63,共3页
Chinese Journal of Schistosomiasis Control
关键词
银杏果皮
钉螺
血吸虫病
中医药疗法
Plant molluscicide
Peel of Ginkgo biloba
Oncomelania hupensis
Molluscicidal effect
