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用茶皂素对日本血吸虫中间宿主钉螺进行杀灭试验,初步结果表明,不同产地的茶皂素浸杀成螺、幼螺、螺卵均有较好的杀灭效果。其中,茶皂素12.5mg/L,茶皂素Ⅱ,Ⅲ5.0mg/L,浸杀钉螺的效果均为100％。喷杀成螺所需浓度较高,效果也稍差。茶皂素对淡水鱼类虽有一定的毒性.但比氯硝柳胺毒性低得多:茶皂素Ⅰ在1.6mg/L以下,茶皂素Ⅱ,Ⅲ在4.0mg/L以下,水温在28℃,48h,鲢鱼全部存活。茶皂素资源丰富,价格低廉,对环境无污染,是具有开发前景的植物杀螺剂。文中还对不同产地的茶皂素的毒性差异原因、使用浓度和方法进行了讨论。
Tea saponin Schistosoma japonicum intermediate host snail kill test, the preliminary results show that different regions of tea saponin soaking snail, snail, snail eggs have better killing effect. Among them, the tea saponin 12.5mg / L, tea saponin Ⅱ, Ⅲ5.0mg / L, dip snail’s effect is 100%. Spray kill into the required higher concentration, the effect is also slightly worse. Tea saponin has some toxicity to freshwater fish, but is much less toxic than niclosamide: tea saponin Ⅰ is below 1.6mg / L, tea saponin Ⅱ and Ⅲ are below 4.0mg / L, water temperature is at 28 ℃, 48h, silver carp all survived. Tea saponin is rich in resources, low prices, pollution-free environment, is a development prospect of plants to kill agents. The paper also on the differences in the origin of tea saponin toxicity reasons, the use of concentration and method were discussed.