农业部东海区渔政局渔政专家通过调查研究,最近详细分析了长江鲥鱼资源衰退原因和提出保护对策。七十年代以前,长江鲥鱼平均生产量在30～50万kg,1974年曾高达157.5万kg,七十年代后期鲥鱼资源急剧衰退,到了1986年其产量仅为1.2万 kg。 Fisheries Administration of Donghai District Agriculture Bureau fishery experts through the investigation and research, recently detailed analysis of the reasons for the decline of the mandarin fish resources and proposed protection measures. Before the seventies, the average production of catfish in the Yangtze River ranged from 300,000 to 500,000 kg. In 1974, it reached 1,575,000 kg. In the late 1970s, there was a sharp decline in catfish resources. By 1986, its output was only 12,000 kg.