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花鲈天然苗种的驯养和分级培育试验
AN EXPERIMENT ON DOMESTICATION AND GRADED-CULTIVATION OF JAPANESE SEA-BASS (Lateolabrax japonicus) FRY FROM ESTUARY
【摘要】 河口捕获平均全长2.5cm的天然花鲈苗种,分二阶段进行培育。第一阶段是流水淡化驯养:包括淡化、暂养和驯饵;第二阶段是分级培育,每隔4~6d分筛分级一次,直至4~6cm的鱼种。试验总成活率是55%。
【Abstract】 This paper deals with a method of domestication and graded-cultivation of Japanesesea-bass larvae, 2. 5cm in average total body length, caught from different estuary. With thismethod. the fry reared in concrete tanks obtains good quality and survival rate.This experimentwas divided into two rearing stages: the first stage was domesticating:dilution, temporary cultuvation and domesticating feeding habits. Dilution was achieved by adding flowing fresh water intothe tanks, and the fry was first fed with living brine shrimp, cladocera and copepoda mixed withmashed-fish. Mashed-fish food was gradually increased in proportion until the fry was completely fed on mashed-fish in 4-5 days; the second stage was graded-cultivation. When thefry grew up, it was screened with special fish sieves in every 4-6 days so as to decrease the density of each tank, then the same size of fry screened was put into corresponding tanks in wnichthey could grow well and have little opportunity to massacre each other. The total fry survivalrate of this experiment was 55 %.and the effect was significant.
【Key words】 Lateolabrax japonicus Fry and Fingerling Cultivation Survival rate;
- 【文献出处】 湛江水产学院学报 , 编辑部邮箱 ,1996年02期
- 【分类号】S965.211
- 【被引频次】5
- 【下载频次】72