Crossbreeding method of freshwater black sea bream and jewel perch

Abstract

The hybrid breeding technology of freshwater black sea bream and gem perch belongs to the field of breeding. The hybrid breeding technology of freshwater black sea bream and gem perch is as follows: parent selection → parent cultivation → parent selection → artificial induction → parental male and female separate ponds for temporary production → artificial insemination → cleaning fertilized eggs → counting fertilized eggs → artificial hatching → fry hatching → Fry breeding. After the broodstock enter the pond, a series of measures of insecticide, antibacterial and antifungal are used to prevent and control fish diseases, wheat germ is fed, the bottom is improved with a substrate improver, and HCG + high-efficiency No. 3 fish oxytocic agent is used to induce labor. After injecting the oxytocic agent, the male and female broodstock are kept in separate pools for temporary breeding. The present invention carries out crossbreeding of freshwater black sea bream and gem perch. The overall performance index reaches 80‑100% of induced spawning rate, 80‑100% of fertilization rate, and 30‑100% hatching rate of fertilized eggs. 95%.

Description

technical field [0001] The hybrid breeding method of freshwater black sea bream and gem perch belongs to the field of breeding. Background technique [0002] The scientific name of freshwater black sea bream is Hephaestus fu1iginosus, which is a fish of the genus Hephaestus in the family Terapontidae of the order Percifomes. Freshwater black bream is native to the Daly River (Da1y River) water system in northern Australia, and is a famous local economic fish. However, due to shortcomings such as serious size differentiation in the same group of fish, it has affected its popularization and breeding, and it is difficult to find it in most provinces of my country. The scientific name of gem perch is Scortum barcoo, which belongs to the fish of the genus Scortum in the family Terapontidae of the order Percifomes. It is a unique fish in the Murray River and Tully River in Australia. It is one of the famous and precious fish in the local area and enjoys a high reputation in the ...

AI Technical Summary

Problems solved by technology

Although the amount of intergeneric hybridization in fish is not as large as that between species and subspecies, its hybridization effect is much greater than that between species and subspecies