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为了解600 Hz方波连续音对真鲷(Chrysophrys major)幼鱼的驯化效果,在实验室条件下对体长4.4～6.6 cm、体重3.0～4.8 g的南海真鲷幼鱼进行音响驯化试验,连续8 d、每天4次放声结合投饵进行驯化,1次只放声不投饵的检验试验;利用Origin软件中的Gaussion模型对试验鱼空间位置分布数据进行曲线回归分析。结果表明:对照组真鲷幼鱼在水池内基本呈随机分布;试验组真鲷幼鱼听到声音会迅速向声源靠近并聚集在诱集区内,驯化第1～8 d,真鲷幼鱼出现频次最大的区域分别距离水池中心点88.45、82.34、75.18、73.09、70.05、69.74、66.70、72.09 cm;反应时间和聚集时间呈逐渐缩短的趋势,在驯化第4、5 d起达到并维持在最佳状态,从第2 d起极显著低于对照组;停留时间和聚集率呈逐渐增加的趋势,在驯化第5 d起达到并维持在最佳状态,试验期间极显著高于对照组。表明600 Hz方波连续音对真鲷幼鱼具有明显的驯化效果。建立条件反射后,每天1次只放声不投饵,23 d后声音刺激对真鲷幼鱼不再有诱集作用。
In order to understand the domestication of juvenile Chrysophrys major juveniles with a square wave of 600 Hz, the domesticated juvenile of the South China Sea Red Sea bream with body length 4.4 ~ 6.6 cm and body weight 3.0 ~ 4.8 g were studied under laboratory conditions. The experiment was conducted domestically for 8 consecutive days by combining sounding and feeding four times a day, and once without sounding. The Gaussion model of Origin software was used to conduct the curve regression analysis of spatial distribution data of experimental fish. The results showed that the juveniles of the seabream in the control group were basically randomly distributed in the pond. In the experimental group, the juvenile of the seabream heard the sound quickly approaching the sound source and gathered in the trapping area. After being domesticated for 1 to 8 days, The areas with the highest frequency of fish were 88.45,82.34,75.18,73.09,70.05,69.74,66.70 and 72.09 cm respectively from the pool center; the reaction time and aggregation time showed a trend of shortening gradually, reached and maintained at the 4th and 4th day after domestication At the best condition, it was significantly lower than that of the control group on the 2nd day, and the residence time and aggregation rate showed a trend of increasing gradually. It reached and maintained the best condition at 5 days after domestication, and was significantly higher than that of the control group . The results showed that 600 Hz square wave continuous tone had significant domestication effect on juvenile red sea bream. After the conditioned reflex was established, only the sound was released once a day, and after 23 days the sound stimulation no longer induced the juvenile of the seabream.