Jurberg P, Sarquis O, dos Santos J A, Ferreira R da C
Departamento de Biologia, Instituto Oswaldo Cruz, Rio de Janeiro, Brasil.
Mem Inst Oswaldo Cruz. 1995 Mar-Apr;90(2):191-4. doi: 10.1590/s0074-02761995000200011.
The repellent effect of the molluscicides Niclosamide (Bayluscide WP 70), Anacardium occidentale and the latex of Euphorbia splendens on Biomphalaria glabrata was observed through the investigation of the occurrence of escape behavior among molluscs that were exposed to dosages lower than the LD 50. The total number of individuals out of water among the surviving snails in the control group provided a "Natural Escape Index". The comparison between this total and the total number of surviving snails in each group exposed to the different dosages of the molluscicides after 24 hr provided the "Molluscicide Escape Index" and the detection of a "Repellency Range" to these snails. The escape indexes for Niclosamide, A. occidentale and E. splendens were 10%, 6.22% and 6.44% respectively. Repellency occurred at the following concentration ranges: 0.01, 0.02 and 0.03 ppm Bayluscide, 0.1, 0.2 and 0.3 ppm A. occidentale and 0.05, 0.10, 0.15 and 0.20 ppm E. splendens. The Natural Escape Index obtained in the control group was zero.
通过对暴露于低于半数致死剂量的杀螺剂中的软体动物逃逸行为发生情况的调查，观察了杀螺剂氯硝柳胺（贝螺杀WP 70）、腰果和大戟乳胶对光滑双脐螺的驱避效果。对照组存活蜗牛中离开水面的个体总数提供了一个“自然逃逸指数”。将该总数与24小时后暴露于不同剂量杀螺剂的每组存活蜗牛总数进行比较，得出“杀螺剂逃逸指数”，并检测出这些蜗牛的“驱避范围”。氯硝柳胺、腰果和大戟乳胶的逃逸指数分别为10%、6.22%和6.44%。驱避发生在以下浓度范围内：贝螺杀0.01、0.02和0.03 ppm，腰果0.1、0.2和0.3 ppm，大戟乳胶0.05、0.10、0.15和0.20 ppm。对照组获得的自然逃逸指数为零。
