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鳗鲡是一种名贵的经济鱼类。它在国际市场上,尤其是日本市场享有很高的声誉,仅日本每年需求量就达7—8万吨。鳗鱼的经济价值很高,每吨活成鳗出口达5000—6000美元。近年米,日本、我国台湾省鳗鱼养殖业发展很快,常年产量在3万吨以上,其所需鳗苗大部分从我国沿海购进。由于鳗鱼在淡水中生长,性成熟后降到海水中产卵孵化,鳗苗的人工繁殖一直是水产科学上尚未攻克的重大课题之一。面对国际国内养鳗业
Eel is a valuable economic fish. It enjoys a high reputation in the international market, especially in Japan. Japan alone has an annual output of 70,000-800 tons. The high economic value of eel, per ton of live eel exports amounted to 5000-6000 US dollars. In recent years, rice, Japan and eel aquaculture in Taiwan Province of China have witnessed rapid development with a perennial output of more than 30,000 tons. Most of their eel fry are purchased from China’s coastal areas. Due to the growth of eel in freshwater, sexual maturation is reduced to oviposition and hatch in seawater. The artificial breeding of eel seedlings has been one of the major topics that aquatic science has not yet overcome. In the face of international and domestic eel industry