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对 1 98 9～ 1 998年台湾海峡南部渔场生产记录资料分析结果表明 :灯光围网捕捞主要捕捞年适宜水温 1 6 .1～ 30℃ ,年较佳水温 2 0 .1～ 30℃ ,年最佳选择水温 2 1 .1～ 2 9℃ .环境水温过高或过低 ,不利于灯光围网生产 .各季度的选择水温 ,冬季为 2 1 .1～ 2 4℃ ,春季为 2 1 .1～ 2 7℃ ,夏季为 2 6 .1～ 2 9℃ ,秋季为 2 5 .1～ 2 8℃ ;各月选择水温为该月环境水温的中间值至偏高 2℃ ,多数比中间值偏高 1～ 2℃ .选择水温范围的宽幅 3～ 5℃ ;随环境水温升高或降低 ,鱼类对水温选择发生同向、同步的变化 ,是一种渐进的过程 ;在环境水温上升或持续高温 ,温跃层存在、底层低温涌升水强盛的条件下 ,灯光围网的作业效率均受影响 .
The data of production records of fisheries in the southern Taiwan Strait from 1989 to 1998 show that the suitable light fishing seasons for light purse seine are 1.6 ~ 30 ℃ and the annual optimum temperature is 20.1-30 ℃, The best choice of water temperature 21.1 ~ 29. Environmental water temperature is too high or too low, is not conducive to light fence production .Selection of water temperature in each quarter, 21.1 ~ 24 ℃ in winter, 21.1 in spring ~ 27 ℃ in summer, 26.1 ~ 29 ℃ in summer and 25.1 ~ 28 ℃ in autumn. The water temperature in each month was the middle of the monthly ambient water temperature to 2 ℃, mostly higher than the median High 1 ~ 2 ℃. Select the wide range of water temperature 3 ~ 5 ℃; with the ambient water temperature increases or decreases, the fish on the water temperature to choose the same direction, synchronous changes, is a gradual process; in the ambient water temperature rise Or continuous high temperature, the presence of thermocline, the bottom of the low temperature surging water strong conditions, the operating efficiency of the light fence are affected.