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气泡幕对一些鱼类行为具有阻拦和驱赶作用,是海洋牧场建设中鱼群控制的技术之一。本试验在水槽中进行,分别研究将气泡幕设置在水槽1/4 L、1/2 L和3/4 L处时,对20尾日本真鲈(Lateolabrax japonicus)的阻拦效果,以及将气泡幕设置在水槽1/2 L时,在1.56尾/m~2、3.12尾/m~2、4.69尾/m~2和6.26尾/m~2四种密度条件下日本真鲈的行为反应。试验发现:1)实验鱼为20尾时,将气泡幕设置在水槽1/4 L、1/2 L和3/4 L处,阻拦率分别达到了59.08%,94.47%和45.20%,1/2 L处气泡幕阻拦效果较为明显;2)将气泡幕设置在水槽1/2 L处,实验鱼分别为5尾、15尾和20尾时,气泡幕阻拦率分别达到了91.67%、92.33%和94.47%,阻拦效果良好,而实验鱼为10尾时,气泡幕通过率达到了136.67%,说明气泡幕对拦截日本真鲈具有一定不确定性;3)在1.56尾/m~2、3.12尾/m~2、4.17尾/m~2、4.69尾/m~2、6.26尾/m~2和12.52尾/m~2六种密度条件下,气泡幕阻拦率分别为91.67%、-36.67%、45.21%、92.33%、94.47%和59.08%。本研究结果可为我国投放日本真鲈的海洋牧场鱼群控制技术提供参考。
The bubble screen has the function of blocking and driving off some fish behaviors and is one of the fish control technologies in the construction of marine pastures. The experiment was carried out in a water tank. The effects of blocking the bubble curtains on Lateolabrax japonicus (20) were studied when the bubble curtains were set at 1/4 L, 1/2 L and 3/4 L of the water tank, respectively. Set in the sink 1 / 2L, 1.56 in the tail / m ~ 2, 3.12 tail / m ~ 2, 4.69 tail / m ~ 2 and 6.26 tail / m ~ 2 density under four conditions perch reaction. The experimental results showed that: 1) when the experimental fish was 20, the air bubble curtains were set at 1/4 L, 1/2 L and 3/4 L of the flume, and the blocking rates reached 59.08%, 94.47% and 45.20% respectively, (2) The bubble curtain was set at 1/2 L of the sink, the blocking rate of bubble curtain reached 91.67% and 92.33% when the experimental fish were 5, 15 and 20 respectively, And 94.47%, respectively, and the blocking effect was good. When the experimental fish was 10, the passing rate of the bubble curtain reached 136.67%, indicating that the bubble curtain had certain uncertainty on intercepting the Japanese sea bass. 3) At 1.56 tails / m ~ 2 and 3.12 Tail at / m ~ 2,417 tail / m ~ 2,4.69 tail / m ~ 2,6.26 tail / m ~ 2 and 12.52 tail / m ~ 2 six kinds of density conditions, the bubble curtain blocking rates were 91.67%, - 36.67 %, 45.21%, 92.33%, 94.47% and 59.08%. The results of this study may provide a reference for the control of marine herd fish in our country.