低浓度乙氰菊酯对鲤鱼生长及生理生化指标的影响

为了全面评价乙氰菊酯对鱼类的安全性,本实验研究了鲤鱼在不同浓度乙氰菊酯0.685、1.39、2.78、5.56 mg/L(96 h LC50的1/80、1/40、1/20、1/10)下曝露60 d实验中,其行为、生长和血液生理生化指标所受到的不同影响。结果表明,与对照组相比,乙氰菊酯0.685、1.39 mg/L处理对鲤鱼生长的影响差异性不显著, 20 d后2.78和5.56 mg/L处理对鲤鱼生长的影响差异性显著(PP+浓度降低,表现为高血钾和低血钠症。高浓度试验组鲤鱼血液生化指标的变化与对照组间存在着显著(PP<0.01)差异;5.56和2.78 mg/L处理组在实验结束时死亡率各为30%和20%。实验结果表明,鲤鱼长期曝露于较低浓度的乙氰菊酯药液中,其生长和生理生化指标均会受到一定影响。

Study on the Effects of Low Concentration Cycloprothrin on Haematological Biochemical Indices and Growth of Carp

To evaluate the security of cycloprothrin to cap thoroughly, the effects of different concentration cycloprothrin at 0.685、1.39、2.78 and 5.56 mg/L (1/10、1/20、1/40、1/80 of 96 h LC50) on the behaviour, growth and haematological biochemical indices of carp in 60 days were studied. The results showed that the concentrations of 0.685、1.39 had no effect on the growth of carp while the 2.78 mg/L and 5.56 mg/L concentration had obvious influence on the growth after being exposed for 20 days. The concentrations of 5.56、2.78 mg/L had effect on the behaviors as ate food less and swam slowly. The effect of haematological biochemical indices of carp was very significant under the concentration of 5.56 mg/L,and the concentration of 2.78 mg/L had effect on the indices after long term too. In the poisioned fish showed that the haemoglobin(Hb) concerntration and the red blood cell(RBC) numbers and the serum sodium level dropped; the serum alanine aminotransferase(ALT) and aspartate aminotransferase(AST) activity and serum potassium level raised. These haematological changes of the experimental groups were different significantly from the control group. The death rate of the concentration of 5.56、2.78 mg/L were 30 percent and 20 percent respectively. Results show, carp have been exposured in correspondingly low concertration cycloprothrin for a long term, its growth and haematological biochemical indices were been influenced.