Studies on the Selection of Tuna Long-line Fishing Grounds-I.

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Other Title
  • マグロ延繩漁業の漁場選定に関する研究-I
  • マグロ延縄漁業の漁場選定に関する研究I : ミナミマグロ延縄漁業の決定論的モデルによるシミュレーション
  • マグロ ハエナワ ギョギョウ ノ ギョジョウ センテイ ニカンスルケンキュウ
  • Deterministic Model Simulation of Southern Bluefin Tuna Fishery
  • ミナミマグロ延繩漁業の決定論的モデルによるシミュレーション

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Abstract

In these studies on the selection of fishing grounds in southern bluefin tuna fishery, a deterministic model simulation was used. As the shifting methods of boats from one to another fishing ground, the following three cruisings were set:<br> 1. Covering the whole fishing ground, <br> 2. Covering the fishing ground within 10 days to a shift, <br> 3. Covering either side of the present fishing ground.<br>26 cruises of the calculated 61 cruises made the same fishing profits with any of the three shifting methods above and 21 cruises made the same profits with Nos. 1 and 2 methods, but 12 cruises showed a disagreement of the three shfting methods.

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