Method for cultivating pure aristichthys nobilis red.var groups

Abstract

The invention discloses a method for cultivating pure aristichthys nobilis red.var groups. The method comprises activating roe of aristichthys nobilis red.var with diploid sperms of allotetraploid crucian carps, performing cold shock treatment after activation, and controlling the temperature through flowing water to obtain gynogenesis aristichthys nobilis red.var; feeding feeds containing male hormone after incubation for several days to obtain sex reversal male gynogenesis aristichthys nobilis red.var; and performing selfing with gynogenesis aristichthys nobilis red.var serving as the female parent and with male gynogenesis gynogenesis aristichthys nobilis red.var serving as the male parent to obtain gynogenesis pure aristichthys nobilis red.var groups. Further, the gynogenesis aristichthys nobilis red.var can serve as the female parent, a common male aristichthys nobilis red.var serves as the male parent, and the female parent and the male parent are hybridized to obtain gynogenesis pure aristichthys nobilis red.var groups. According to the method, the roe hatchability and the survival rate can be improved greatly, and the pure aristichthys nobilis red.var groups stable in body color and excellent in performance can be cultivated.

Description

technical field [0001] The invention relates to a method for cultivating a fish population, in particular to a method for cultivating a pure line population of bighead carp. Background technique [0002] Hunan Xiangyun Biotechnology Co., Ltd. discovered individuals whose body color mutated into orange-red during the cultivation of common bighead carp. After long-term breeding, they obtained a new strain of bighead carp——Xiangyun golden carp (see figure 1 ) (Aristichthys nobilis red.var). Due to the advantages of fast growth, strong stress resistance, beautiful body shape, delicious taste, and orange-red fish body color, Xiangyun golden carp has been popular among fish farmers and consumers in recent years, and scale breeding has been carried out at present. And breeding, tens of thousands of acres of experimental breeding in Sichuan, Chongqing, Hunan and other provinces and cities, the effect is good. [0003] Since Xiangyun golden carp is a gene mutation strain, although ...

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Problems solved by technology

But so far, there are few reports on artificially inducing bighead carp to perform gynogenesis, because the operation of gynogenesis is easy to damage fish eggs, and there are many problems such as inappropriate sperm inactivation and improper treatment of diploid haploid eggs. For these reasons, the hatching rate and survival rate of artificially induced gynogenetic fish are not high. Related reports on breeding pure line populations of bighead carp by induced fish gynogenesis

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