黄果茄植物提取物对不同寄生虫中间宿主

采用常规浸杀灭螺的方法，观察黄果茄植物提取物对不同贝类的生物效应。设8组浓度，观察24 h、48 h和72 h不同贝类的死亡率，并计算LC50。结果表明，当SX浓度为8.640 mg/L，室温在（25±1）℃、水温（23±1）℃时，对湖北钉螺、光滑双脐螺、静水椎实螺浸杀48 h，其死亡率均达100%。48 h的LC50分别为0.332、0.858、0.747 mg/L。研究结果显示，黄果茄植物提取物是一种灭螺效果好且很有苗头的植物灭螺剂。

Biology Effective Assessment to shellfishes of Intermediate Host in Different Parasitic with Plant Extraction of Solanum xanthocarpum

The normal method of molluscicide was used to observe the biology effective assessment in different shellfishes with plant extraction of Solanum xanthocarpum(Solanum xanthocarpum is called SX for short form). Eight concentrations of SX was used to immerse three kinds shellfishes for 24 hours、48 hours and 72 hours, and LC50 of shellfishes was calculated. The results showed that the shellfishes were immersed for 48 hours with SX(8.640 mg/L)at the room temperature 25±1℃ and water temperature 23±1℃, the mortality rate of Oncomelania hupensis、Lymnaea slagnalis、Biomphalaria glabarate was 100%. The LC50 for 48 hours were 0.332,0.858 and 0.747 mg/L respectively. The findings indicated SX has a idea effective of mollusciciding to three kind shellfishes,and is a novel molluscicide to the shellfishes.