A method to promote the synchronous gonad development of male and female broodstock of Puffer puffer obscura

Abstract

The invention discloses a method for promoting synchronous development of sexual glands of takifugu obscurus male and female parent fishes, comprising the following steps of: screening parent fishes, rearing by adopting dim light in a parent fish rearing process, and promoting the development of the sexual gland of the takifugu obscurus by adopting means such as reducing illumination intensity, controlling water temperature, stimulating with running water and the like. Meanwhile, 1 per mill of Chinese herbal medicine, VE and edible salt are added into feed, animal feed such as lobster, musselmeat and the like are thrown and fed in the later stage of the rearing process to carry out strengthening rearing; pre-acceleration of maturation physiological regulating means is carried out twice, thus the problem that the development of the sexual glands of the takifugu obscurus male and female parent fishes is asynchronous, the situation that fry of the takifugu obscurus is in short supply can be alleviated, the takifugu obscurus can be artificially bred and released without consuming resource of wild parent fish, and a phenomenon that natural resource of the takifugu obscurus is sharply reduced owning to influence of economic activity of human can be avoided.

Description

technical field [0001] The invention relates to a method for promoting the synchronous development of the gonads of the male and female broodfish of puffer pufferfish. Background technique [0002] Fugu obseurus (Fugu obseurus) is a fish of the genus Fugu in the Fuguidae family of Fuguformes. It is a river-sea migratory fish, commonly known as "puffer fish". High medicinal value, fish skin can be used as leather material. Therefore, Puffer obscurus is a famous, special and high-quality new aquatic product with high development value. [0003] Due to the influence of human economic activities, the natural resources of puffer obscura have decreased sharply, while the market demand has increased unabated. In response to this contradiction, people have carried out research on artificial breeding of puffer obscurus and achieved certain results . But puffer obscurus is a migratory spawning fish in rivers and seas. It must go through two processes of salinization and desalinatio...

AI Technical Summary

Problems solved by technology

But puffer obscurus is a migratory spawning fish in rivers and seas. It must go through two processes of salinization and desalination before the gonads can mature. It matures early, and there are often asynchronous development of male and female broodstock gonads in the process of artificial reproduction, which affects the speed of artificial reproduction, reduces the fertilization rate, induced labor rate and hatching rate; in order to ensure the smooth progress of artificial reproduction, it is necessary to save a large number of parents, increase cost of production