绿鳍马面鲀工厂化早繁苗种培育关键技术

doi:10.16378/j.cnki.1003-1111.20137

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Abstract Drab filefish Thamnaconus septentrionalis as a good aquaculture fish species for potential development has been cultured in recent years. From autumn 2018 to spring 2019, an industrial seedling production experiment was conducted in 220 wild broodfish of drab filefish to investigate the techniques of domesticating and maturation inducing of broodstock, egg collection, incubation, and seedling rearing. The results showed that the broodfish began to spawn at the end of March 2019, with the spawn peak (19.5—22.0 ℃) from mid-April to mid-May 2019, about 2 months earlier than that in the natural sea area. The fertilized eggs were hatched after 46—48 h at (22.5±1.5) ℃, and a total of 332×10⁴ ind. newly hatched larvae were obtained with an average hatching rate of (71.0±6.7)%. After 60 days, a total of 4.17×10⁵ ind. fry were obtained with 1.37×10⁵ ind. small sized juveniles (total length of 2—3 cm), 2.0×10⁵ ind. medium size fry (total length of 3—5 cm) and 8×10⁴ ind. large size juveniles (total length of 5—8 cm) in 37 indoor ponds (30 m³/ind.), with total survival rate of 12.6%. The embryonic development and biological characteristics of growth, feeding and living habits of drab filefish during the early life stages were also studied. The four “critical period” were put forward, and the key techniques of seedling production were discussed.

Key words： Thamnaconus septentrionalis seedling production key techniques

Received: 28 June 2020

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	Articles by authors
	JIANG Lianglong
	ZHANG Zhe
	WANG Zhen
	DU Rongbin
	LUAN Shunxiang
	WU Yanqing
	LIU Liming

Cite this article:

JIANG Lianglong,ZHANG Zhe,WANG Zhen, et al. Key Techniques of Industrial Seedling Production for Drab Filefish Thamnaconus septentrionalis in Early Breeding Season[J]. Fisheries Science, 2021, 40(6): 801-809.

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https://www.shchkx.com/EN/10.16378/j.cnki.1003-1111.20137 OR https://www.shchkx.com/EN/Y2021/V40/I6/801

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