七带石斑鱼人工繁育技术研究进展

Progress of artificial breeding technique for seven-band grouper Epinephelus septemfasciatus

七带石斑鱼(Epinephelus septemfasciatus)具有经济价值高、生长速度快和低温耐受性强等特点,是东北亚温带海域理想的网箱养殖品种之一,已成为中、日、韩三国海水鱼类繁育研究的热点。由于存在雄鱼性成熟年龄高、人工驯养条件下难以实现自然产卵和初孵仔鱼弱小等难题,其稳定和高效的种苗规模化繁育技术尚未完全建立起来。本文综述了七带石斑鱼人工繁育技术研究现状,重点总结日本近20年在亲鱼繁殖、仔稚鱼培育和苗种中间培育等方面取得的研究进展,并就其发展前景进行分析,旨为中国七带石斑鱼苗种规模化繁育技术研发提供参考。

Seven-band grouper Epinephelus septemfasciatus,a fast growing and commercially valuable marine fish species with better tolerance to cold water temperature than most other grouper species,is considered as one of the most potential species for marine fish cage culture in the temperate seas along the coast of Northeast Asia.It has been investigated intensively for aquaculture during the past several decades in the countries of China,Japan and Korea where it distributes.However,the stable and efficient artificial breeding technique of seven-band grouper has not been established fully,owing to some reproduction problems such as extended maturation age for male,failure to spawn spontaneously under captivity and the fragility of newly hatched larvae.The progress on broodstock reproduction,larval rearing,and the nursery of juveniles of seven-band grouper,which has been achieved mainly by Japanese scientists during the past twenty years,is reviewed.Further research priorities in this domain are also suggested.This paper also provides necessary referential information for the research on the mass seed production technique of seven-band grouper in China.