论文部分内容阅读
一、鯷鱼资源开发、利用的现状1、鯷鱼资源丰富,年可捕量庞大鯷鱼是鱼是东、黄海区(合我国近海)尚未充分开发的中、上层小型鱼类.据黄海所连续多年对东、黄海区鯷鱼资源的调查、评估指出:蕴藏量在280～430万吨,最大年可捕量在50～70万吨,并已基本探明鯷鱼越冬、产卵、索饵渔场分布范围及洄游规律.专家指出,鯷鱼资源年自然死亡率高达40%,若不开发利用,将白白浪费于海中.
First, the current situation of the development and utilization of catfish resources 1, catfish rich in resources, annual catches large catfish is the fish is the East, the Yellow Sea (with our offshore) not yet fully developed middle and upper small fish. According to the Yellow Sea The survey and assessment of the catfish resources in the East China Sea and the Yellow Sea for many years indicates that the reserves are between 2.8 and 4.3 million tons and the maximum annual catch is between 500 and 700,000 tons. It has been basically proved that the catfish winters, spawns, and spawns The distribution range of bait fishing grounds and the law of migration.Experts point out that the annual natural mortality rate of catfish resources is as high as 40%, and if it is not exploited, it will be wasted in the sea.