Sebastes schlegeli artificial squeezing fry breeding method

Abstract

The invention discloses a sebastes schlegeli artificial squeezing fry breeding method, and belongs to the technical field of fry breeding. The method comprises parent selection, indoor temporary breeding, artificial fish squeezing, fry resurgence and fry breeding; the artificial fish squeezing comprises the following steps: selecting parturient female fishes, wrapping fish bodies with cloth-like objects wetted by seawater, covering eyes of the female fishes, and slightly squeezing abdomens of the fishes towards genital pores in order that mature fries slowly flow into a prepared water container; slightly squeezing the abdomens of parent fishes, and stopping squeezing fries after the flow speed of the fries decreases, putting the parent fishes back into a pond, and squeezing the fries 2-4 hours later according to a production requirement. By adopting the method, the quantity of fries can be regulated and controlled according to production, and the problems of dystocia, abortion and the like of the parent fishes reproducing for the first time are solved. The method has important significance to the reduction of artificial operation inconvenience and control on the culture pond density.

Description

technical field [0001] The invention relates to the technical field of fish seedling breeding, in particular to a breeding method for artificially squeezed larvae of the genus Xu's. Background technique [0002] Sebastesschlegeli, formerly known as black scorpion, belongs to the genus Sebastesschlegeli of the order Scorpionidae, and reproduces viviparously with eggs. Widely distributed in the temperate waters of the northern hemisphere, it is a common economic fish in the Yellow and Bohai Seas of my country. Xu's flat carp generally gives birth around 23:00 to 2:00 in the morning; in the process of artificial breeding, the broodstock will be aborted due to external interference when giving birth, which will affect the quality of the larvae; the maturation of the female fish is not synchronized and The fish are produced in batches; the newly produced larvae are delicate, and they are easy to be injured and die when they are attached to the net. Therefore, it is difficult to...

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is to provide a method for artificially squeezing larvae breeding method of P. xushi. The present invention can regulate the number of larvae according to the production, and avoid problems such as dystocia and abortion of the broodstock in the first breeding, which is helpful for reducing the inconvenience of manual operation and It is important to control the density of breeding ponds