A kind of method of full-artificial seedling raising of pachyrhiza semispinus

Abstract

The invention discloses a wholly-artificial fry culturing method for acrossocheilius hemispinus. The wholly-artificial fry culturing method comprises the following steps of: capture of original parent fishes from natural water areas, culture of the parent fishes, prenatal culture enhancement, artificial spawning induction, artificial insemination, incubation of oosperm, artificial culture of larval and young fishes in a cement pond and large-size fry culture in an earth pond and culturing into the acrossocheilius hemispinus. The wholly-artificial fry culturing method is characterized in that wild parent fishes cultured are utilized for artificially breeding out a first filial generation of young fishes; by two-year culture, a first filial generation of parent fishes with sexual maturity are bred; and the first filial generation of parent fishes are utilized for artificially breeding out a second filial generation of young fishes, so that the wholly-artificial fry culture is realized. The invention provides a mode suitable for large-scale production of the fries of the acrossocheilius hemispinus. The technology breaks through the bottleneck of difficult parent-fish source caused by lack of wild germplasm resources of the acrossocheilius hemispinus, provides technical support and fry guarantee for wild resource restoration of national aquaculture germplasm resource protection areas of the acrossocheilius hemispinus and other water areas with natural population distribution, and can realize large-scale culture and artificial culture industrialization of the acrossocheilius hemispinus.

Description

technical field [0001] The invention belongs to the field of aquaculture, and in particular relates to a method for artificially raising seedlings of pachyrhiza. Background technique [0002] At present, my country's research work on the protection and development of freshwater indigenous characteristic fish species is progressing slowly, and the foundation is relatively weak. In recent years, due to the deteriorating ecological environment of the origin of many freshwater indigenous species with certain research and development value, the fishing output has been greatly reduced; in addition, the research on artificial breeding technology, nutritional requirements and breeding technology has not yet made breakthroughs, and the commercial products on the market The supply of fish is in short supply, and the phenomenon of overfishing driven by economic interests has been repeatedly banned, resulting in a serious decline in the number and quality of the population of these indi...

AI Technical Summary

Problems solved by technology

In recent years, due to the deteriorating ecological environment of the origin of many freshwater indigenous species with certain research and development value, the fishing output has been greatly reduced; in addition, the research on artificial breeding technology, nutritional requirements and breeding technology has not yet made breakthroughs, and the commercial products on the market The supply of fish is in short supply, and the phenomenon of overfishing driven by economic interests and other phenomena of overfishing has been repeatedly banned, leading to a serious decline in the population quantity and quality of these indigenous species, and wild germplasm resources are at risk of extinction