A kind of Australian freshwater lobster hatching method in vitro

Abstract

The invention relates to the field of lobster culture and discloses an Australian cherax quadricarinatus in-vitro hatching method. After fertilized ova are obtained, the fertilized ova are cleaned and then are put into an in-vitro hatching plate to perform artificial hatching. The in-vitro hatching plate is provided with a front-arranged filter bucket matched with a water body, an ozone disinfection machine, a heating tube, an oxygen-enriching machine and a separation net, the fertilized ova are put on the separation net, bubble stones are arranged at the bottom of the in-vitro hatching plate to make a water flow so as to keep the fertilized ova slightly moving, the ozone disinfection machine controls regular disinfection in a time system mode, and the fertilized ova can be hatched into juvenile cherax quadricarinatus after about 40-50 days. By means of the Australian cherax quadricarinatus in-vitro hatching method, the infection rate of the fertilized ova can be reduced to be below 10%, the survival rate of hatching can be 90% or above, the survival rate of fertilized ovum hatching is greatly improved, the young prawn yield can be effectively improved, and remarkable economic benefits are produced.

Description

technical field [0001] The invention relates to the field of lobster culture, in particular to an Australian freshwater lobster hatching method in vitro. Background technique [0002] Australian freshwater lobster (Cherax quadricarinatus), scientifically known as four-ridge light-shelled crayfish, also known as red-clawed crayfish, is native to Australia. It looks like a lobster in the sea and is one of the most valuable freshwater economic shrimp species in the world. The body color of this shrimp is brownish green, and there is a membranous bright red band on the outer top of the claw of mature male shrimp, which is beautiful and beautiful, so it is also known as red claw shrimp. Australian freshwater lobsters mate and lay eggs outside the body. The female lobster hatches the eggs, and they can become larvae on their own in the mother body. When the shrimp leaves the mother body, the individual length can reach 0.8 cm, and they can be directly put into ponds for cultivatio...

AI Technical Summary

Problems solved by technology

[0003] However, the Australian freshwater lobster has a small amount of eggs, and it will swim during the egg incubation process, which can easily cause the fertilized eggs to fall or be damaged by collision, which seriously affects the survival rate of the fertilized eggs. It is difficult to ensure a sufficient supply of seedlings, which seriously restricts the Australian freshwater lobster. Development of farming

At the same time, once the female shrimp dies during the hatching process, the remaining intact fertilized eggs are difficult to develop smoothly, resulting in a large number of healthy fertilized eggs that are difficult to develop into larvae, causing a lot of waste

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