三环唑对黄鳝鱼种的急性毒性及安全浓度评价

Acute toxicity of tricyclazole to Monopterus albus and its safety assessment

在常温条件下[水温为(23±2)℃,pH值6.8,溶氧4.6 mg/L]用经过处理的自来水,采用静水试验法,对平均体质量8.7g/尾黄鳝鱼种进行三环唑的急性毒性试验。随着药物浓度的上升和浸泡时间的延长,黄鳝鱼种死亡量上升。三环唑对黄鳝鱼种24h、48h和96h半致死浓度分别为9.87mg/L、8.36 mg/L、6.53 mg/L,安全浓度为0.653 mg/L.结果表明:黄鳝鱼种对三环唑敏感,毒性为中毒级。

At room temperature conditions [water temperature was（23 ±2）℃,p H value of 6.8,dissolved oxygen 4.6 mg/L] of treated water by using the hydrostatic test,the average weight of 8.7 g/fish for Monopterus albus tail tricyclazole acute toxicity test. The results showed that： the average mortality of the tested Monopterus albus was increased with the raise of concentrations of tricyclazole and the delay of saking time;24 h,48 h and96 h median lethal concentration of 9.87 mg/L,8.36 mg/L,6.53 mg/L,the safe concentration was 0.653 mg/L. The results showed that： tricyclazole was very sensitive to Monopterus albus and the toxicity was middle level.