血水草生物碱杀灭钉螺的研究  

STUDY ON MOLLUSCICIDAL EFFECTS OF EOMECON CHIONANTHA ALKALOIDS

作　　者：黄琼瑶[1] 彭飞[1] 刘年猛[1] 杨华中[1] 胡琦[1] 冯芳[1] 孙慧[1] 

机构地区：[1]湖南师范大学医学院,长沙410006

出　　处：《中国血吸虫病防治杂志》2004年第1期55-57,共3页Chinese Journal of Schistosomiasis Control

基　　金：湖南省卫生厅资助项目 (9686);湖南省科技厅资助项目 (0 0 jty10 0 5 )

摘　　要：目的　探讨血水草生物碱在实验室不同温度下杀灭钉螺的效果。方法　在实验室配制不同浓度的血水草生物碱溶液 ,观察在 2 0、2 5、30℃时浸泡 2 4、4 8、72、96 h的钉螺死亡率 ;观察杀螺卵效果 ;观察钉螺上爬率。结果　浸泡 72 h钉螺死亡率为 10 0 %的血水草生物碱溶液的浓度及温度分别为 :1.2 5 mg/ L、30℃ ;2 .5、5、10 m g/ L 均为 2 5℃。 5 mg/ L 时能明显抑制钉螺上爬。螺卵在 5 m g/ L溶液浸泡 72 h孵出率为 0～ 10 %。结论　血水草生物碱有较好杀灭钉螺的效果 ,是一种有研究价值的植物灭螺剂。Objective To understand the molluscicidal effects of Eomecon Chionantha Alkaloids (ECA) on Oncomelania hupensis.Methods By using immersion methods for different durations of time the molluscicidal effects of ECA and the rate of snails climbing-upward were observed. Results While the solution concentrations and temperatures of ECA were at 1.25 mg/L,30℃;2.5 mg/L,25℃;5 mg/L and 10 mg/L,25℃ respectively,and the snails were immersed for 72 hours,the mortality of Oncomelania snails were 100%. The hatching rates of Oncomelania eggs after immersed for 72 h in the solution of 5 mg/L were 0～10%. ECA showed an inhibiting effect on the snails' climbing-upward in the concentrations of 5 mg/L. Conclusion ECA has molluscicidal effect on Oncomelania and is one of the potential plant molluscicides.

关 键 词：血水草 生物碱 植物杀螺剂 钉螺 

分 类 号：R383.24[医药卫生—医学寄生虫学]