剪鳍标记法测定钻井噪声与振动对草鱼生长的影响

Effect of Drilling Noise and Vibration on the Growth of Ctenopharyngodon idellus by Cut-fin Marking Method

采用剪鳍标记法测定了钻井噪声与振动对草鱼 (Ctenopharyngodonidellus)生长的影响。结果表明 ,钻井噪声与振动对草鱼生长有显著影响 ,其临界等效噪声和振动级约为84.4dB和 90 .2dB ,影响域径约为 8.5m ;污染持续时间和鱼的体重等生态因素能显著改变钻井噪声与振动对草鱼生长的污染效应 ;由于在污染消失后草鱼生长率能迅速恢复 ,这说明钻井噪声与振动对草鱼的影响是可逆的 ,并未产生器质性损伤。因此 ,用非听觉系统激起反应解释钻井噪声与振动对草鱼的影响机制可能是合理的。

The effect of drilling noise and vibration pollution on the growth of Ctenopharyngodon idellus was studied by cut-fin marking method on petroleum exploring spots. The results showed that the effect of the pollutions on Ctenopharyngodon idellus growth was obvious. The critical equivalent noise level (Nl eq) and vibration level (Vl eq) were about 84.4 dB and 90.2 dB respectively, and the affecting radius was 8.5 m.There were some ecology factors which could change the polluting effect,such as the polluting duration,body weight of fishes. As soon as the pollution disappeared, the fish’s growth rate resumed rapidly, indicating this kind of effect was reversible. Therefore, it may be reasonable that the affecting mechanism could be explained by the activated response of non-hearing system.