论文部分内容阅读
鱿鱼的腕足断裂强度是影响鱿钓脱钩率的重要因素。通过现场实测,分析了印度洋西北部海域鸢乌贼(Symplectoteuthis oualaniensis)的腕足断裂强度对手钓作业脱钩率产生的影响。结果表明,鸢乌贼的每根触腕仅能承受的拉力相当于体重的0.7倍,因此,钓捕过程中,因触腕断裂造成的脱钩率接近100%;而另外的第I-IV腕足的断裂强度分别是其体重的2.30、2.05、2.06和1.87倍;5对腕足整体的平均脱钩率接近10%。
Squid’s wrist rupture strength is an important factor affecting squid fishing off hook rate. Based on field measurements, the effect of the breaking strength of the claws of Symplectoteuthis oualaniensis on the hook-off rate of hand-fishing was analyzed in the northwestern Indian Ocean. The results showed that the tension of each tentacles of Symlectoteuthis ouala was only 0.7 times the body weight, so the detachment rate due to the rupture of the wrist during fishing was close to 100%. The other I-IV brachiopods The breaking strength was 2.30, 2.05, 2.06 and 1.87 times of their body weight, respectively; the average detachment rate of 5 to the whole brachiatum was close to 10%.