Breeding method of low-salt tolerant exopalaemon carinicauda strain

Abstract

The invention discloses a low-salt tolerant exopalaemon carinicauda strain breeding method, which belongs to the technical field of aquatic animal genetic breeding, and comprises the following steps: (1) introducing a basic breeding group; (2) constructing a core breeding group; (3) establishing an F1 generation family; (4) F1-generation offspring seed cultivation; (5) low-salt stress culture screening; (6) seedling growth rate comparison; (7) reserving seeds of F1-generation parents; (8) constructing an F2 generation family; and (9) subculture selection. According to the method, wild populations of different sources are selected as basic populations, and through low-salt tolerance breeding, the bred new strain is high in growth speed, high in low-salt tolerance and suitable for breeding and popularization in river regions; the breeding method is simple, practical and high in operability, and the exopalaemon carinicauda low-salt improved variety with excellent characters can be bred through multi-generation breeding.

Description

technical field [0001] The invention belongs to the technical field of genetic breeding of aquatic animals, and in particular relates to a breeding method of a low-salt tolerant white prawn strain. Background technique [0002] Exopalaemon carinicauda (Exopalaemon carinicauda), also known as white shrimp, jasmine shrimp, five-bearded shrimp, etc., is a medium-sized economical shrimp with wide temperature, wide salt, and omnivorous nature. Its meat is tender, delicious, and nutritious. edible value and market demand. [0003] The seedlings required for pond culture of white prawns are mainly obtained through natural collection of seedlings in sea areas, fishing of natural seedlings, or breeding of adult shrimp parents. The quantity and quality of seedlings are greatly affected by the external environment, and there are often unstable germplasm sources, genetic Problems such as unclear background and serious germplasm degradation, mainly manifested in symptoms such as slow gr...

AI Technical Summary

Problems solved by technology

[0003] The seedlings required for pond culture of white prawns are mainly obtained through natural collection of seedlings in sea areas, fishing of natural seedlings, or breeding of adult shrimp parents. The quantity and quality of seedlings are greatly affected by the external environment, and there are often unstable germplasm sources, genetic Problems such as unclear background and serious germplasm degradation, mainly manifested in symptoms such as slow growth, uneven individual size, and poor stress resistance, have seriously restricted the development of large-scale artificial cultivation of white prawns. Breeding research is particularly important

[0004] Up to now, the reported varieties of white prawns mainly include "Huangyu No. 1" and "Kesuhong 1". see the report

Images