Artificial breeding method of golden snakehead

Abstract

The invention belongs to the technical field of fish reproductive physiology, and discloses an artificial breeding method of golden snakehead. The artificial breeding method comprises the following steps of selecting 2-3-year-old healthy, strong male and female golden snakehead parent fishes with better gonad development, and intensively breeding the parent fishes in a greenhouse; preparing a breeding pond, adding soft, fresh and non-toxic floating waterweeds into the breeding pond, and meanwhile, reducing direct irradiation of strong light; selecting oxytocic and an oxytocic injection mannerto perform artificial ripening, induced spawning and mating fertilization; and conducting fry breeding management. According to the artificial breeding method of the golden snakehead, well-developed golden snakehead fries can be obtained, operation is easy and convenient, the parent fish utilization rate is high, the breeding success rate is high, the fry survival rate is high, large-scale production of the golden snakehead fries can be achieved, and great significance is achieved for development of large-scale breeding of the golden snakehead; and meanwhile, environmental conditions requiredby seedling emergence are relatively simple, and the cost is low. According to the artificial breeding method of the golden snakehead, technical support is provided for snakehead fish breeding, and important significance is achieved for development of large-scale golden snakehead breeding.

Description

technical field [0001] The invention belongs to the technical field of fish reproductive physiology, and in particular relates to an artificial breeding method of snakehead. Background technique [0002] At present, Channa argus belongs to Perciformes, Channidae, and Channa. It is commonly known as snakehead, raw fish, mullet, etc. It is an important freshwater economic fish in my country and has a wide distribution range. , from the Heilongjiang River Basin in the north to Sichuan, Yunnan, and Guangdong in the south. The body color of the snakehead is dark gray-black, with irregular plaques symmetrically arranged on the head and the back of the body. [0003] Albino Channa argus (Albino Channa argus) is an albino mutant produced by mutation of the wild Channa argus gene. It was first discovered in Shandong Province. It was previously reported that Albino Channa argus appeared in the middle and lower reaches of the Jialing River in Sichuan Province. The difference with the ...

AI Technical Summary

Problems solved by technology

[0005] Through the above analysis, the existing problems and defects of the prior art are as follows: the breeding efficiency of the traditional method of breeding golden snakehead fry is low, and the fry survival rate is reduced

[0006] The difficulty in solving the above problems and defects is: the golden crow snakehead is an albino mutant strain, and because it experiences a higher level of selection than normal individuals in the natural environment (that is, the phenotype-specific mortality and / or reduced reproductive fitness), it is difficult to reproduce in the artificial environment. During the breeding process, the selection of hormones and dosage and other conditions need to be explored. Due to the lack of melanin protection, the stress resistance of the fry is weak in the early stage of hatching, so the requirements for the breeding environment and the selection of open bait are also different from the traditional method.

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