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大西洋大眼金枪鱼(Thunnus obesus)是高经济价值鱼种,其分布几乎覆盖整个 大西洋水域。研究大西洋大眼金枪鱼的渔业对于我国远洋渔业意义重大。所以在此 对其渔业及资源状况进行研究。根据三种主要渔业(延绳钓、围网和竿钓)的渔获量, 可看出大眼金枪鱼渔业的发展概况。为了分析资源状况,文中使用了Walters and Hilborn(1976)产量模型。其结果是99.6千公吨的最大持续产量和114,760作业日的 最佳捕捞努力量。与目前约200,000作业日的努力量水平相比,资源处于过渡捕捞 状态。因此,应该采取一些管理手段来减少捕捞努力量,使资源恢复到最佳状态。
Atlantic tunas (Thunnus obesus) is a species of high economic value, covering almost the entire Atlantic Ocean. Studying the Atlantic octopus tuna fisheries is of great significance to the ocean-going fishery in China. Therefore, the fisheries and resources in this study. According to the catch of the three major fisheries (longlines, seines and poles), it is possible to discern the development of the bigeye tuna fisheries. To analyze the state of the resource, Walters and Hilborn (1976) production model was used. The result is the maximum sustained yield of 99.6 thousand metric tons and the best fishing effort of 114,760 days of operation. Resources are in a transitional fishing position compared to the current effort level of about 200,000 operations days. Therefore, some management measures should be taken to reduce fishing effort so that resources can be restored to their best condition.