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(一)日本水产资源的实况和研究日本近几年来,占世界上最高的渔获量,年达600余万吨,但是今后能不能维持这样大的渔获量,是有疑问的。占总产量约20%的远洋渔业中,除鲣、金枪鱼渔业外其余远洋渔业都要受到国际上资源管理的限制,而且这种限制,年年在加强。洄游于日本近海的所谓沿岸性洄游鱼类,这类资源的实况和变动的规律,都还没有得到充分的了解,也没有按照科学依据采取措施,以致资源衰退。例如日本的产量中,本来在数量上常占第
(I) Facts and studies on aquatic resources in Japan Japan has accounted for the world’s highest catches of 6 million tons in recent years. However, it is questionable whether such large catches can be maintained in the future. Of the ocean-going fisheries, which make up about 20% of the total output, all the remaining oceanic fisheries except shrews and tuna fisheries are subject to international resource management restrictions, and such restrictions are strengthening year after year. The so-called coastal migratory fish migrating off the coast of Japan have not yet been fully understood or changed according to scientific evidence, resulting in a decline in resources. For example, Japan’s production, it has always been the number of the first