300Hz脉冲音对许氏平鲉幼鱼的驯化效果

Acoustic training of rockfish Sebastes schlegeli by 300 Hz impulse wave interval sound

采用300 Hz脉冲波断续音在实验室水槽中对许氏平鲉Sebastes schlegeli幼鱼进行音响驯化试验。结果表明:在驯化第15天开始聚集时间减小到2 s,之后到20 d均无大变化;聚集时间从第5天开始整体呈递减趋势,驯化第16天,聚集时间达到最短(16 s);聚集率则逐日增加,驯化第18天,聚集率达到最高,为91%,平均聚集率为83.9%;音响驯化结束10 d后再次放声,许氏平鲉开始聚集时间为3 s,聚集时间为44 s,聚集率为86.3%。由此可见,300 Hz脉冲波断续音对许氏平鲉有明显的驯化作用;许氏平鲉对驯化声音记忆力超过10 d且效果显著。

Discontinuous sound of 300 Hz impulse wave was used to train juvenile rockfish Sebastes schlegeli weighing（6.2±3.3）g.The response time was found to be reduced to 2 s at the 15th day without significant changes in the remaining experiment days.Aggregation times were showed to be decreased gradually from the 5th day,the minimum of 16 s at the 15th day.The aggregation ratios were increased gradually,the maximum 91% at the 18th day and average aggregation rate of 83.9%.The response time was 3 s 10 days after the acoustic training,aggregation time of 44 s and aggregation ratio of 86.3%,indicating that there was an effective effect of discontinuous sound of 300 Hz impulse wave on the rockfish and 10 day memory.