Jaiswal Preetee, Singh D K
Department of Zoology, DDU Gorakhpur University, Gorakhpur 273009, UP, India.
Vet Parasitol. 2008 Apr 15;152(3-4):264-70. doi: 10.1016/j.vetpar.2007.12.033. Epub 2008 Jan 8.
The molluscicidal activity of seed and lyophilized latex powder of Carica papaya and seed powder of Areca catechu against the vector snail Lymnaea acuminata was studied. The toxicity of these plant products was time and dose dependent. The toxicity of C. papaya lyophilized latex powder (LC(50) at 96 h: 8.38 mg/l) was more pronounced than that of A. catechu seed powder (LC(50) at 96 h: 12.32 mg/l) and C. papaya seed powder (LC(50) at 96 h: 61.56 mg/l). Ethanolic extracts of C. papaya seed and A. catechu seed were more toxic than their other extracts. The ethanolic extract of A. catechu seed (LC(50) at 24h: 17.21 mg/l) was more effective than the ethanolic extract of C. papaya seed (LC(50) at 24h: 53.38 mg/l). The LC(50) of column-purified fraction of A. catechu seed at 96 h was 3.99 mg/l, whereas that of C. papaya seed was 7.06 mg/l. C. papaya and A. catechu may be used as potent molluscicides since the concentrations used to kill the snails were not toxic for the fish Colisa fasciatus which shares the same habitat with the snail L. acuminata.
研究了番木瓜种子和冻干乳胶粉以及槟榔种子对中间宿主尖膀胱螺的杀螺活性。这些植物产品的毒性具有时间和剂量依赖性。番木瓜冻干乳胶粉的毒性（96小时半数致死浓度：8.38毫克/升）比槟榔种子粉（96小时半数致死浓度：12.32毫克/升）和番木瓜种子粉（96小时半数致死浓度：61.56毫克/升）更为显著。番木瓜种子和槟榔种子的乙醇提取物比它们的其他提取物毒性更强。槟榔种子的乙醇提取物（24小时半数致死浓度：17.21毫克/升）比番木瓜种子的乙醇提取物（24小时半数致死浓度：53.38毫克/升）更有效。槟榔种子柱纯化组分在96小时的半数致死浓度为3.99毫克/升，而番木瓜种子的为7.06毫克/升。番木瓜和槟榔可用作有效的杀螺剂，因为用于杀死蜗牛的浓度对与尖膀胱螺共享同一栖息地的条纹豆娘鱼无毒。
