Method for quickly establishing improved breeding system of YY super-male pelteobagrus fulvidraco

Abstract

The invention discloses a method for quickly establishing an improved breeding system of YY super-male pelteobagrus fulvidraco. The method mainly includes the first step of screening pelteobagrus fulvidraco wild male parents, the second step of carrying out wild parent germplasm resource evaluation on the pelteobagrus fulvidraco, the third step of establishing YY female and YY male basic breeding population through mating with existing YY males, the fourth step of carrying out breeding on the YY female and YY male basic breeding population, the fifth step of carrying out test mating verification on the YY females and the YY males, the sixth step of carrying out quick population expansion on the improved breeding system of the YY female super-male pelteobagrus fulvidraco and establishing the improved breeding system of the YY female super-male pelteobagrus fulvidraco, and the last step of repeating the sixth step, so the improved breeding system can be established. According to the method, genetic diversities of the super-male pelteobagrus fulvidraco are increased, the rate of fertilization, and the incubation rate and the survival rate are improved; meanwhile, the breeding time is shortened, batch breeding can be achieved, the YY female super-male pelteobagrus fulvidraco and XY male fishes with improved characters can be produced in a large-scale mode, the yield can be improved greatly, and economic benefits can be increased.

Description

technical field [0001] The invention relates to the technical field of fish breeding new species improvement and fish physiological genetic reproduction, and is based on integrated technologies such as traditional population selection, microsatellite markers, artificial sex reversal, fish sex-specific molecular marker PCR detection and test cross verification, etc. Control fish sex and strain improvement to improve the production performance of all male yellow catfish, a method for quickly establishing an improved breeding line of YY super real real yellow catfish. Background technique [0002] Yellow catfish is an important fish in freshwater aquaculture. According to the "2013 China Fishery Statistical Yearbook", the aquaculture output of yellow catfish reached 257,000 tons in 2012, and the demand for fry is estimated to reach 15 billion fish. However, due to problems such as small scale, poor quality, and market chaos in the production of yellow catfish fry, the lack of ...

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is that inbreeding depression will occur in the breeding lines from the same family, which is unfavorable to the sustainable utilization of all male yellow catfish, and there is no method for quickly establishing the improved breeding line of YY super realgar yellow catfish

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