Breeding method of high-yield reversible-resisting hybrid ctenoid variety

Abstract

A method for culturing the hybrid scallop with high growth speed and stress resistance includes such steps as distant hybridization between Jiekong scallop and Huagui Jiekong scallop, hybridizing with Jiekong scallop JNR to obtain the male parent ZHJ, hybridizing with the female Jiekong scallop CDS5, and culturing the hybrid filial generation.

Description

Technical field: [0001] The invention belongs to the technical field of marine biology, and belongs to the compound breeding scheme combining selective breeding and distant hybrid breeding technology in the study of genetic improvement of shellfish, specifically a method for breeding high-yield and stress-resistant hybrid scallop varieties technical background: [0002] Scallop has always been one of the main types of marine aquaculture in my country. For many years, the scale and output of scallop cultivation in my country rank first in the world. However, since the mass death of Chlamys farreri broke out in the summer of 1997, the species structure of scallop culture in my country has undergone major changes. The aquaculture output of scallops has been around 100,000 tons. Chlamys farreri is a local scallop species naturally distributed in the coastal waters of my country. Compared with imported bay scallops, it has the advantages of tender meat, delicious taste, and rich ...

AI Technical Summary

Problems solved by technology

The second outstanding problem is that the genetic stability of traits is poor, which is not convenient for the unified operation and management of production

Commercial seedlings grow slowly, have poor uniformity, and the proportion of small individuals is an important reason for their mortality rate as high as 70%. Small individual seedlings have very weak tolerance to high temperatures, and it is difficult for scallops below 5mm to survive the summer before the beginning of summer.