草鱼网围养殖区声波的研究

对网围养殖区内草鱼的活动声波进行了采集与分析,并将采集的声波进行了回放。结果表明,草鱼网围养殖区声波频率范围为0~3.2 kHz,整个频段内没有宽带波峰。在草鱼饥饿、食饵和饱食的不同状态下养殖区内的水声特性有一定的差异。研究表明在网围养殖区通过声波回放能对草鱼起到诱集作用,在投饵回放、投饵不回放及不投饵回放声波的情况下,草鱼的响应时间分别为2.55、3.504、.80 min,存在显著差异。回放持续性声波和间隔性声波在响应时间上不存在显著差异。

Sound Wave of Grass Carp's Enclosure Culture Area

In the enclosure culture area,grass carp's action sound wave was collected and analyzed,then,the collected wave was replayed.The result indicated that the sound frequency in the enclosure culture area of grass carp was between 0-3.2 kHz and no breadth wave crest in the whole range.There were some differences with the character of water sound under the conditions of starvation,feeding and being full.The study showed that in the area of enclosure culture,grass carp could be collected by sound wave replayed,the responding time is 2.55,3.50 and 4.80 min respectively in the conditions of feeding with wave replay,feeding without wave replay,replaying wave without feeding,the differences between them are significant.The responding time test showed that the difference is not obvious under the conditions of continual and discontinual sound wave replay.