印度洋西北部海域鸢乌贼的触腕和腕足钓捕断裂强度  

Jigging Broken Strength of Arms and Tentacula of Symplectoteuthis oualaniensis in Northwestern Indian Ocean

作　　者：吴国峰[1] 周应祺[1] 陈新军[1] 

机构地区：[1]上海水产大学海洋学院,上海200090

出　　处：《湛江海洋大学学报》2006年第1期31-35,共5页Journal of Zhanjiang Ocean University

基　　金：农业部公海渔业资源探捕调查项目(技04-44);上海市重点学科建设项目(T1101)

摘　　要：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%。Broken strength of arms and tentacula of squid is a significant factor affecting the jigging-off rate. By on-site measurement, the broken strength of arms and tentacles of Symplectoteuthis oualaniensis in Northwestern Indian Ocean was analyzed and their jigging-off rate in hand-jigging was obtained. The results show that the bearable strength of tentacle is as 0.7 times only as that of its body weight and the jigging-off rate caused by tentacle broken is nearly 100%. The broken strengths of the other four arms are respectively as 2.30, 2.05, 2.06 and 1.87 times as that of its body weight. The average jigging-off rate for all arms and tentacula is about 10%.

关 键 词：鸢乌贼 触腕 腕足 断裂强度 印度洋西北海域 

分 类 号：S973.3[农业科学—捕捞与储运] S932.4[农业科学—水产科学]