In this experiment, the effects of beta-cypermethrin on acute toxicity and serum GPT and GOT of crucian were studied. It was indicated that the 96hLC50 of beta-cypermethrin was 11.4 μg L-1. The crucian serum was treated at the levels, 0 μg L-1, 0.114 μg L-1, 0.57 μg L-1, 1.14 μg L-1 for 0 d 5 d 10 d 15 d and 20 d, respectively. The results showed that beta-cypermethrin could make great damage to crucian biochemical characteristics, and suggested that the effects of toxicant on serum GPT and GOT could be used as an index of toxicological assessment.
