论文部分内容阅读
气泡幕可作为海洋牧场鱼群控制的技术手段之一。本研究通过改变气泡幕在水槽中的相对位置和试验许氏平鲉(Sebastes schlegeli)的密度来观察许氏平鲉的行为反应,运用了观察法、对照试验法和控制变量法探究了气泡幕对不同密度下的许氏平鲉的阻拦效果。结果显示:1)试验鱼20尾时,气泡幕的位置分别设置在矩形水槽长的1/4、1/2和3/4处(鱼的密度为12.52、6.26、4.17尾/m2),阻拦率分别达到了98.2%、88.4%和92.9%,阻拦效果明显。2)气泡幕设置在水槽长度方向的1/2处,试验鱼分别为5尾、10尾、15尾和20尾时,气泡幕阻拦率分别达到了100%、85.7%、100%和88.4%(鱼群密度分别为1.56、3.12、4.69、6.26尾/m2),阻拦效果良好。3)由于阻拦率较高,试验鱼群密度和阻拦效率没有明显的关系。本研究结果可为我国投放许氏平鲉的海洋牧场鱼群控制技术以及取水口拦鱼技术提供参考。
Bubble curtain can be used as a marine pasture school of fish control technology. In this study, we observed the relative behavior of bubble curtains in the water tank and the density of Sebastes schlegeli to observe the behavioral responses of H. tabulaeformis. Observations, control experiments and control variables were used to investigate the effects of bubble curtain For different density of Hsu Ping Ping block effect. The results showed that: 1) When the fish were tested at 20 tails, the positions of the bubble curtains were set at 1/4, 1/2 and 3/4 of the length of the rectangular trough (the fish density was 12.52, 6.26 and 4.17 tails / m2) The rates reached 98.2%, 88.4% and 92.9% respectively, and the blocking effect was obvious. 2) The bubble curtains were set at 1/2 of the length of the sink, and the blocking rates of bubble curtain reached 100%, 85.7%, 100% and 88.4% respectively when the test fish were 5, 10, 15 and 20 respectively. (Fish density respectively 1.56,3.12,4.69,6.26 tail / m2), blocking effect is good. 3) Due to the high rejection rate, there is no obvious relationship between test fish population density and blocking efficiency. The results of this study may provide a reference for the control technology of fish farms and the technology of fish-catching and fish-catching at the water intake of Hsu Ping Ping.