高锰酸钾对中国花鲈的毒性效应

为给中国花鲈(Lateolabrax rnaculatus)养殖的病害防治提供理论数据,研究了高锰酸钾对中国花鲈鱼苗和幼鱼急性毒性,检测了暴露于不同质量浓度高锰酸钾中,幼鱼肝脏的谷胱甘肽(GSH)和丙二醛(MDA)含量以及超氧化物歧化酶(SOD)、过氧化氢酶(CAT)、谷丙转氨酶(GPT)和谷草转氨酶(GOT)活力.结...

Toxic Effects of Potassium Permanganate on Perch Lateolabrax maculates

Abstract: In order to provide reference data for the disease control of the cultured Chinese perch (Lateolabrax maculatus), the acute toxicity of potassium permanganate to the perch fry and juvenile was investigated in this study. The levels of GSH and MDA, and activities of SOD, CAT, GPT and GOT in the juvenile liver were determined in response to exposure to different potassium permanganate concentrations. The results show that the LC50 for fry exposed to potassium permanganate were 4.1 mg·L-1 (24 h) and 3.3 mg·L-1 (48 h), respectively, and the safe concentration was 0.6 mg·L-1; the LC50 for juveniles exposed to potassium permanganate were 4.5 mg·L-1 (24 h) and 4.0 mg·L-1 (48 h), and the safe concentration was 0.9 mg·L-1. Lytic necrosis of the liver tissue of agonal individuals exposed to potassium permanganate was found. After exposure to potassium permanganate at different concentrations for 48 h, the levels of GSH and MDA, and activities of SOD, CAT, GPT and GOT in the juvenile liver changed sensitively, while activity of GPT did not show sensitive change, to potassium permanganate stress. Potassium permanganate stress damaged the antioxidative system and the liver tissue of juvenile Lateolabrax maculates.