Seedling method of big salangid in northern saline-alkaline areas

Abstract

The invention discloses a seedling method of big salangid in northern saline-alkaline areas. The method comprises the steps of solution preparation, parent fish selection, artificial insemination, artificial incubation, incubation management and the like. Water body salinity and alkalinity in the step of artificial incubation can be gradually improved by the method naturalizing step by step from fertilized eggs of the big salangid, ecological plasticity of the fertilized eggs of the big salangid is utilized to improve the adaptability of fish larvae after seedling emergence to the saline-alkaline water body quality and thus improve the transplanting success rate of big salangid in northern high saline-alkaline water body. The big salangid offspring seed cultivated by the method provided by the invention is applied to the transplanting of big salangid in northern low-temperature environment and high saline-alkaline water body. The method is simple to operate and can improve the transplanting success rate of the big salangid in water bodies such as lakes and reservoirs of saline-alkaline areas and well improve the fishery economic benefit of the saline-alkaline water body.

Description

technical field [0001] The invention relates to the technical field of fish artificial breeding, in particular to a seedling raising method for large whitebait in northern saline-alkaline areas. Background technique [0002] big whitebait (Protosalanx hyalocranius Abbott ) is a large annual high-quality fish in the family Silverfish. It has delicious meat, no spines, high protein content, and high fishery value. At the same time, because of its fast growth rate and strong fecundity, it is the best choice for transplanting and multiplying lakes and reservoirs. Excellent variety. The transplantation of big whitebait generally adopts artificially inseminated fertilized eggs, and the salinity of natural water bodies in the north is generally high, such as Qinghai Lake in Qinghai Province, a typical water body, whose salinity is as high as 13.49g / L, and the alkalinity content As high as 24.95me / L, transplanting the fertilized eggs of big whitebait to such water body, its hatchi...

AI Technical Summary

Problems solved by technology

The transplantation of big whitebait generally adopts artificially inseminated fertilized eggs, and the salinity of natural water bodies in the north is generally high, such as Qinghai Lake in Qinghai Province, a typical water body, whose salinity is as high as 13.49g / L, and the alkalinity content As high as 24.95me / L, the fertilized eggs of big whitebait are transplanted into such water bodies, the hatching rate is low in water with high salinity, and the deformity rate of seedlings increases, which leads to the failure of big whitebait transplantation