モノフィラメント製鮪延縄漁具による試験操業について

概要

論文の詳細を見る
A considerable amount of catch was recently obtained by tuna long-line using monofilament nylon on the small and coastal fishing boats. Actual tests on the research and training vessel were conducted to evaluate the catch rate and operation efficiency using monofilament long-line and the possibility of commercial tuna operation for large fishing vessels The results showed that the catch rate using monofilament gear reached a mean value of 2.71% and the catch efficiency was approximately 6.7 times as compared with that of ordinary gear. However, this method needed much time for line casting operation and hauling opera-tion. Moreover the tangling rate of the branch line showed a high value. With improvements in the mechanization and handling, this method could be introduced to large fishing vessels as the catch rate had a high value.
日本水産學會の論文