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通过“灭非灵”对尼罗罗非鱼(Oreochromis niloticus)(体重为34.65±5.69 g)的急性毒性试验及对鳃、肝、肾的组织学研究,从组织学角度探讨了“灭非灵”对尼罗罗非鱼的致死机理。结果表明:“灭非灵”对尼罗罗非鱼的24、48、72和96 h-LC50分别为0.148、0.103、0.048和0.032 mg·L-1;其组织病理学损伤表现为鳃小片萎缩、卷曲、坏死、脱落和融合,鳃间隙分泌大量的粘液细胞;肝细胞肿大,空泡化,细胞界限模糊,细胞核固缩;肾细胞肿大,充血;“灭非灵”对3种组织的损伤程度为鳃>肝脏>肾脏,3种组织的损伤很有可能是造成尼罗罗非鱼死亡的主要原因。
Through the acute toxicity test of Oreochromis niloticus (weighing 34.65 ± 5.69 g) and the histological study of gill, liver and kidney of “Triflum”, we discussed the histological study of “ Off non-Ling ”on the Nile tilapia death mechanism. The results showed that the 24,48,72 and 96 h-LC50 values of Tropicin not only were 0.148, 0.103, 0.048 and 0.032 mg · L-1, respectively, but the histopathological damages were gill Small pieces of shrinkage, curly, necrosis, loss and fusion, the gill gap secretion of a large number of mucus cells; hepatocyte swelling, vacuolization, fuzzy cell boundaries, nuclear pyknosis; renal cell swelling, congestion; The damage of three kinds of tissues was gill, liver and kidney. The damage of the three kinds of tissues is probably the main reason of the death of Nile tilapia.