A kind of method for cultivating portunus trituberculatus in seawater net cage

Abstract

The invention belongs to the field of marine food product culture, and particularly relates to a method for culturing portunus trituberculatus in sea cages. The method comprises the following steps: S1, disinfecting seawater and gravel; S2, adding special seawater and sodium chloride to a culture pond to obtain culture solution, and setting the culture solution to meet the condition for culturing the portunus trituberculatus; S3, selecting several healthy female juvenile crabs and male juvenile crabs of the portunus trituberculatus, putting the juvenile crabs in the sea cages, and putting the sea cages in the culture pond; S4, culturing the juvenile crabs by stages. According to the method for culturing the portunus trituberculatus in the sea cages, provided by the invention, the female portunus trituberculatus and the male portunus trituberculatus can be separately cultured by staged culture, and are raised together when mating, so that not only death caused by fight between males is reduced but also the fertility rate of the female crabs is ensured; after mating is ended, the male portunus trituberculatus is fished out, and the female portunus trituberculatus is cultured alone; the female portunus trituberculatus and the male portunus trituberculatus are sold by stages, so that the economic benefit of culture is improved.

Description

technical field [0001] The invention belongs to the technical field of marine product cultivation, and in particular relates to a method for cultivating portunus trituberculatus in seawater cages. Background technique [0002] Portunus trituberculatus is an important marine economic animal. Because of its large size and delicious meat, it is deeply loved by the masses and has high economic value. Therefore it gradually unfolds as a breeding object. In the existing portunus trituberculatus culture technology, the seedlings are generally put in the beginning of May, and they are listed in about October. When putting in the seedlings, they are mixed breeding of males and females. Therefore, there are the following problems: (1) the feed of input is not enough, resulting in Young crabs have a higher mortality rate; (2) During the breeding process, male crabs are fiercer than female crabs, fighting for bait and mates, resulting in the death of a large number of swimming crabs and...

AI Technical Summary

Problems solved by technology

Therefore it gradually unfolds as a breeding object. In the existing portunus trituberculatus culture technology, the seedlings are generally put in the beginning of May, and they will be listed in about October. The mortality rate of juvenile crabs is relatively high; (2) During the breeding process, compared with female crabs, male crabs have a fierce temperament and fight for bait and spouses, etc., resulting in the death of a large number of swimming crabs and a decrease in production