De Souza C P, Mendes N M, Araújo N, Katz N
Centro de Pesquisas René Rachou-FIOCRUZ, Belo Horizonte, Brasil.
Mem Inst Oswaldo Cruz. 1987 Jul-Sep;82(3):345-9. doi: 10.1590/s0074-02761987000300005.
A buthanol extract of Phytolacca dodecandra (type 44) obtained from Ethiopia berries, was tested as molluscicide in our laboratory and in the field. The lethal dose (LD90) for adult snails, newly hatched and egg-masses of Biomphalaria glabrata, in 24 hours exposure, were of 4.5, 23.0 and 102.0 ppm respectively. The LD90 for the fish Lebistes reticulatus was of 2.0 ppm. These results are similar to those of Lemma (1984) in Ethiopia. In two water ponds treated with 10 ppm of the buthanol extract or 3 ppm of niclosamide the mortality rates of B. glabrata were of 84.6 and 100.0%, respectively. Both treatments were toxic for L. reticulatus in the field trials. The possibility of using molluscicides derived from plants is discussed as an alternative for treatment of schistosomiasis foci in Brazil.
从埃塞俄比亚浆果中提取的商陆（44型）丁醇提取物，在我们实验室和野外作为杀螺剂进行了测试。光滑双脐螺的成年螺、新孵出的幼螺和卵块在暴露24小时后的致死剂量（LD90）分别为4.5、23.0和102.0 ppm。网纹鳉鱼的LD90为2.0 ppm。这些结果与埃塞俄比亚的莱马（1984年）的结果相似。在两个用10 ppm丁醇提取物或3 ppm氯硝柳胺处理的水塘中，光滑双脐螺的死亡率分别为84.6%和100.0%。在田间试验中，这两种处理方法对网纹鳉鱼都有毒性。文中讨论了使用植物源杀螺剂作为巴西血吸虫病疫源地治疗替代方法的可能性。
