Singh Arundhati, Singh V K
Department of Zoology, D.D.U. Gorakhpur University, Pant Bhawan, Gorakhpur 273009, UP, India.
Vet Parasitol. 2009 Oct 14;164(2-4):206-10. doi: 10.1016/j.vetpar.2009.05.008. Epub 2009 May 19.
The molluscicidal activity of bark powder of Saraca asoca, leaf powder of Thuja orientalis against the snail Lymnaea acuminata was studied. The molluscicidal activity of all the plant products was found to be both time and concentration dependent. The 96 h LC(50) of T. orientalis leaf powder against L. acuminata was 250.5mg/l. Ethanol extracts were more toxic than other organic extracts. The ethanol extract of T. orientalis leaf (24h LC(50): 32.74 mg/l) was more effective than that of S. asoca bark (24h LC(50): 82.38 mg/l). The 24h LC(50) of column purified fraction of T. orientalis leaf and S. asoca bark powder was 29.25 and 64.89 mg/l, respectively. Saponin and thujone were identified as active molluscicide components in the bark of S. asoca and leaf of T. orientalis, respectively. The product of S. asoca and T. orientalis may be used as potent molluscicides.
研究了无忧花树皮粉和侧柏叶粉对尖膀胱螺的杀螺活性。发现所有植物产品的杀螺活性均具有时间和浓度依赖性。侧柏叶粉对尖膀胱螺的96小时半数致死浓度（LC50）为250.5毫克/升。乙醇提取物比其他有机提取物毒性更大。侧柏叶乙醇提取物（24小时LC50：32.74毫克/升）比无忧花树皮乙醇提取物（24小时LC50：82.38毫克/升）更有效。侧柏叶和无忧花树皮粉柱纯化部分的24小时LC50分别为29.25和64.89毫克/升。皂苷和侧柏酮分别被鉴定为无忧花树皮和侧柏叶中的活性杀螺成分。无忧花和侧柏叶的产品可用作有效的杀螺剂。
