Family selection breeding method of red-line strain siniperca chuatsi

Abstract

The invention relates to a family selection breeding method of red-line strain siniperca chuatsi. The method comprises the following steps that 1, red-line siniperca chuatsi which is light yellow in color and has red body surface lines and obvious growth advantages is selected from a siniperca chuatsi population variant in body color to serve as standby parents; 2, after the selected female and male parents are subjected to adaptability breeding strengthening, artificial directional mating and induced spawning are carried out on each pair of male and female parents, and fertilized eggs produced by each pair of parent fishes are transferred into incubation barrel for independent breeding; 3, in the young fish stage and the adult fish stage of growth of siniperca chuatsi, a family high in red-line siniperca chuatsi proportion and high in weight gain rate is selected out to serve as a next-generation selection breeding basic family. Through the method, 4-6 generations of continuous selection breeding are carried out so that the red-line strain siniperca chuatsi bright in color, symmetric and attractive in body shape, strong in physique and obvious in variety feature can be bred. The method effectively solves the problems that the varieties of red-line siniperca chuatsi are mixed and degradation is serious; inbreeding is avoided, and the diversity of the genetic structure of the population is kept; selection breeding is carried out many times from the parents to fry, and the selection breeding efficiency is high.

Description

technical field [0001] The invention belongs to the technical field of aquaculture, and in particular relates to a family breeding method of red striped mandarin fish. Background technique [0002] mandarin fish ( siniperca chuatsi ) is homophonic with "Gui Yu", which symbolizes "rich and noble." It is a normal body color, with 3 black stripes on the head and light black on the side of the body. The red-striped mandarin fish is an individual differentiated from the common mandarin fish group. The 3-striped road on the head is mutated to red, and the side of the body is pale yellow. At present, the breeding of mandarin fish is mainly based on growth rate as the target trait for selection and breeding, while the research on family selection with body color as the target trait has not been reported yet. The mandarin fish with red stripes is bright in color, which adds ornamental value and economic value on the basis of mandarin fish's meaning of "rich and noble", and has gre...

AI Technical Summary

Problems solved by technology

However, at present, there is a lack of effective species conservation and breeding technical measures for the red-striped mandarin fish, which makes the problems of red-striped mandarin fish with light color, more variegated colors, and reduced genetic diversity become more and more serious.