关键词: 百毒杀, 急性毒性, 抑菌实验, 病理组织学, 鲤鱼, 鲫鱼

Abstract: This paper reports acute toxicity to carp, crucian and antibacterial test to Aermonas hydropila, Pseudomonas fluorescent of "BEMSTAQUAM-s". The result shows that the LC 50 of carp and crucian within 24 and 48 hours are 7.13mg/L, 6.87mg/L and 13.72mg/L, 13.22mg/L; the safety concentration of carp and crucian are 0.69mg/L and 1.32mg/L; the Minimum Inhibitory Concentration (MIC) and the Minimum Response Concentration (MRC) are 0.01mg/L and 0.1mg/L. The main pathological changes happen on gill, intestine, liver and kidney of fish killed by "BESTAQUAM-s", especially, the gill's damage are more serious. It leads to the fish hypoxia, suffocate and death.

Key words: “BESTAQUAM-S”, TOXICITY, ANTIBACTERIAL, TEST PATHOLOGY, CARP, CRUCIAN