A red sea bream and black sea bream hybridized insemination method

Abstract

The invention relates to a method for fish crossing semination, which in detail is a method for crossing semination between red porgy and black porgy. The method comprises following steps: collecting healthy and sexual mature red porgy as female parent, collecting healthy and sexual mature black porgy as male parent; putting ovum of red porgy into beaker, which is high quality, putting sperm of black gorgy into said beaker; shaking lightly said beaker, adding into filtered sea water to activate sperm; shaking or stirring to make ovum and sperm contact thoroughly; adding filtered seawater and stewing; washing ovum with net sheet, putting it into seawater for stewing; putting floated fertilized ovum into hatching net cage filled with seawater, and aerating for hatching. The invention is characterized by simple operation, low cost, and high efficiency; the fish combines the sound property of parent and is characterized by fast growth speed, strong disease resistance and good adverse resistance.

Description

technical field [0001] The invention relates to a method for cross fertilization of fish, in particular to a method for cross fertilization of red sea bream and black sea bream. Background technique [0002] Hybridization generally refers to the mating of individuals of different strains, varieties, or even species, genera and subfamilies. The biological characteristics of hybridization are: it can drastically shake the conservation of heredity, endow the heredity of hybrids with motility, have greater plasticity, and have the possibility of developing into various aspects of human cultivation. Hybridization can rapidly and significantly improve the vitality of hybrids, and obtain heterosis (Heterosis); hybridization can enrich the genetic structure, and through hybridization, the genes of more than two varieties or individuals with different genetic bases can be freely combined to form new genetics. Types, and then people can select excellent individuals and breed them int...

AI Technical Summary

Problems solved by technology

Due to the lack of breeding and germplasm improvement, the germplasm resources have begun to decline, resulting in a decrease in the growth rate of the cultured black sea bream, germplasm degradation, increasingly serious diseases, a decline in quality, and a significant decline in economic benefits, which has affected the stability of the black sea bream aquaculture industry. and sustainable development

[0005] Because red sea bream is sensitive to temperature, the annual winter mortality rate is very high, causing great losses to farmers; while black sea bream is cultured, due to the deterioration of the breeding environment, the annual survival rate of black sea bream is only 10-20%.