el-Fiki S A, Mohamed A M
Egypt J Bilharz. 1978;5(1-2):91-100.
Studies dealing with the effect of some herbicides on the molluscicidal action of certain molluscicides against B. alexandrina have been carried out. In the first part of the study the toxicity of 3 molluscicides (Copper sulphate, Niclosamide and Frescon) and 3 herbicides (Gramaxone, Preforan and Treflan) was tested individually. Results indicated that the molluscicides were more potent than the herbicides. In the second part, snails were exposed for 24 hr to one of the tested herbicides using LC0 or (Sub. lethal conc) then the toxicity of molluscicides was determined among the same snails. Data indicated that pre-exposure to herbicides caused a synergistic action with copper sulphate, while with Niclosamide and Frescon marked antagonistic effect was observed. In the third part molluscicides and herbicides were mixed in different ratios (1:2, 1:1 and 2:1) and the toxicity of the mixtures was tested. A synergistic effect was observed in the case of copper sulphate plus various herbicides especially with Treflan at 1:2 ratio. With Niclosamide and Frescon slight antagonistic effect was detected.
已开展了一些关于某些除草剂对某些杀螺剂针对亚历山大藻杀螺作用影响的研究。在研究的第一部分，分别测试了3种杀螺剂（硫酸铜、氯硝柳胺和法螺杀）和3种除草剂（草甘膦、丙草胺和氟乐灵）的毒性。结果表明，杀螺剂比除草剂更有效。在第二部分中，将蜗牛暴露于使用LC0或（亚致死浓度）的一种受试除草剂中24小时，然后测定同一批蜗牛中杀螺剂的毒性。数据表明，预先接触除草剂会与硫酸铜产生协同作用，而与氯硝柳胺和法螺杀则观察到明显的拮抗作用。在第三部分中，将杀螺剂和除草剂按不同比例（1:2、1:1和2:1）混合，并测试混合物的毒性。在硫酸铜加各种除草剂的情况下观察到协同作用，尤其是与1:2比例的氟乐灵。与氯硝柳胺和法螺杀检测到轻微的拮抗作用。
