Full-manual breeding method for megalonibea fusca

Abstract

The invention discloses a full-artificial breeding method for megalonibea fusca. The method comprises the following steps of: getting parent fish seeds from natural sea areas; carrying out reinforced breeding on parent fish; carrying out artificial spawning on the parent fish; carrying out hatching on fertile eggs; carrying out indoor artificial cultivation on juvenile fish; carrying out indoor nutrition strengthening cultivation on the juvenile fish in an alevin stage; carrying out ecological breeding on the alevin which are moved into an earthen pond after the alevin stage; and breeding thealevin into large-size seedlings, and the like. The full-artificial breeding method provided by the invention is a mode applicable to the large-scale production of megalonibea fusca fries. After carrying out three-year cultivation on first-generation juvenile fish which is successfully artificially bred, sexually-matured first-filial-generation parent fish is cultivated, and then second-generation juvenile fish is bred from the first-filial-generation parent fish, thereby achieving the full-artificial breeding. The full-artificial breeding method breaks through the bottleneck that because themegalonibea fusca belongs to endangered fish species, parent fish sources are extremely difficult, and realizes the large-scale artificial breeding and culturing industrialization of the megalonibea fusca.

Description

technical field [0001] The invention belongs to the aquaculture technology, and relates to a method for artificially propagating and raising seedlings of seawater fish, in particular to a method for fully artificially breeding and raising seedlings of catfish. Background technique [0002] Megalonibea fusca is a new species named by Zhu Yuanding et al. (1963), which belongs to the family Sciaenidea and belongs to the genus Megalonibea fusca. It is the only fish species distributed in my country. It is a large warm-temperate bottom fish in the coastal waters. It is mainly distributed in the East China Sea, the southern Yellow Sea, the Taiwan Strait and the South China Sea. Adult fish generally weigh 40-50kg, and the largest individual can reach 70-100kg. Its swim bladder is a very rare and precious tonic. In the history of Zhejiang, the price of brown catfish swim bladder per 1000 grams is 30,000-50,000 yuan, and there is a saying As the saying goes: "Wood scorpion is full o...

AI Technical Summary

Problems solved by technology

The profit of breeding can reach 66%-78%, which is the first choice for sea cage culture industry. However, natural seedlings in natural sea areas are almost extinct, which cannot meet the urgent needs of the breeding industry.