一、引言日本的鲑鱼来源有四个:一是沿岸定置网渔业,捕捞由人工育苗放流的鲑鱼回归群体;二是远洋捕捞;三是进口;四是网箱养殖。其种类包括:马苏大麻哈鱼(Oncorhynchus masou)、大鳞大麻哈鱼(O. tshamytscha)、大麻哈鱼(O. keta)、银大麻哈鱼(O. kisutch)、细鳞大麻哈鱼(O. gorbuscha)、红点大麻哈鱼(O. rhodurus)和红大麻哈鱼(O. nerka)。1974年到1984年日本的鲑鱼供应量翻了一番鲑鱼需求量的增加、远洋捕捞产量的减少以及减少对进口依赖性的愿望,促使日本 I. INTRODUCTION There are four sources of salmon in Japan: First, the coastal nets fisheries are set up and the salmon released by artificial breeding are returned to the community; second, the ocean fishing; third is the import; fourth is the cage culture. Its species include: Oncorhynchus masou, O. tshamytscha, O. keta, O. kisutch, O. gorbuscha, O. rhodurus and O. nerka. Japan’s supply of salmon doubled between 1974 and 1984 The increase in demand for salmon, the reduction of ocean-fishing yields and the desire to reduce dependence on imports have prompted Japan