Method for domesticating young lateolabrax japonicus in saline-alkali waters

Abstract

The invention discloses a method for domesticating young lateolabrax japonicus in saline-alkali waters. When fertilized eggs of lateolabrax japonicus are hatched, the salinity is set to 20 to 30; during the newly-hatched fry stage of lateolabrax japonicus, the salinity is set to 25 to 30; the salinity is adjusted by using seawater and tap water in proportion, and the concentration of Ca2+ in the water is kept greater than 194.26 mg / L, the Mg2+ concentration is greater than 556.67 mg / L, the pH is 6.5-7.5, and the aquaculture water body alkalinity is smaller than or equal to 20 mmol / L. The method has the advantages that the method for applying and breeding lateolabrax japonicus as a reference to the saline-alkali water body in northern China is provided, a suitable salinity and pH treatmentare set for breeding lateolabrax japonicus of the northern sea, the lateolabrax japonicus fertilized egg and newly-hatched fry hatching and breeding method enables the hatching rate of fertilized eggsof lateolabrax japonicus to be high, enables the deformity rate to be low and causes the fry viability to be strong, and the theoretical basis is provided for the cultivation of the early-stage lateolabrax japonicus fries in saline-alkali land.

Description

technical field [0001] The invention belongs to the technical field of aquaculture, and relates to a method for domesticating juvenile perch in saline-alkali waters. Background technique [0002] Lateolabrax maculatus belongs to Perciformes, Serranidae, and Lateolabrax. It is commonly known as perch and sea bass. It has the characteristics of fast growth, few diseases, and wide adaptability. From the initial stage of port breeding and pond breeding, it has developed into high-density intensive farming methods such as modern seawater cages and factory production. In recent years, the northern coast of my country has broken through the technical difficulties of artificial breeding of perch, which will increase the supply of perch seedlings in the northern region, and then drive the vigorous development of perch aquaculture in the northern coastal and inland waters. In the early days, the perch likes to live in brackish waters of estuaries, and it has the characteristics of fa...

AI Technical Summary

Problems solved by technology

At present, it is believed that 10mmol / L can be used as the alkalinity risk index of silver carp (Hypophthalmichhehys molitrix) and bighead carp (Aristichthys nobilis) aquaculture water, but there is no report on the alkalinity risk index of sea bass with strong stress resistance

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