摘要
为降低鸢乌贼钓捕脱钩率,2004年12月～2005年1月对鸢乌贼的触腕和腕足断裂强度进行了现场测定.结果认为,触腕的平均断裂强度是其体重的1.06倍;第Ⅰ腕足的平均断裂强度是体重的2.55倍,第Ⅱ腕足的平均断裂强度是体重的2.87倍,第Ⅲ和Ⅳ腕足的平均断裂强度是体重的2.88倍.其断裂强度与体重的比值分别比太平洋褶柔鱼和柔鱼低.研究认为,触腕平均断裂强度低是造成高脱钩率的主要原因之一.断裂强度与体重之比值分别与体重和胴长呈直线相关.
In this paper, the broken strength of tentacles and arms of symplectoteuthis oualaniensis are tested at the sea from December 2004 to January 2005 in order to analyze the cause of jigging off rate and reduce the rate. The results show that the average broken strength of tentacles is 1.06 times of its weight, the first arm and the second arm are 2.55 times and 2.87 times as high as its weight respectively, and the last two arms are 1.88 times more than its weight. The ratio of broken pacificus and Ommastrephes bartrami . The results also strength to its weight is lower than that of Todarodes indicate that the low broken strength of tentacles is one of the main causes leading to high jigging off rate. There are linear relationships between the ratio of broken strength to weight and its mantle length, and between the ratio and its weight respectively.
出处
《海洋渔业》
CSCD
2005年第4期324-327,共4页
Marine Fisheries
基金
农业部公海渔业资源探捕调查项目"印度洋鸢乌贼资源调查"
关键词
鸢乌贼
触腕断裂强度
腕足断裂强度
印度洋西北海域
Symplectoteuthis oualaniensis
broken strength of tentacle
broken strength of arm
Northwestern Indian Ocean
