Breed conservation method for ovigerous shrimps of cherax quadricarinatus

Abstract

The invention discloses a breed conservation method for ovigerous shrimps of cherax quadricarinatus. The method includes the steps: selecting parent shrimps; mating the parent shrimps; inducing oogenesis; collecting the ovigerous shrimps; treating ovigerous females; performing low-temperature breed conservation for the ovigerous females; performing temperature-raising development for the ovigerous females. By the method, breeding and breed conservation cycle can be shortened, shrimp seed offspring with low survival rate and high quality is increased, and the requirement for breeding in batches is met. Financing cost input is reduced to a certain degree, and the method is easy to popularize.

Description

technical field [0001] The invention relates to the technical field of artificial breeding of shrimps, in particular to a method for preserving species of crayfish with eggs. Background technique [0002] Red claw crayfish (Cherax quadricarinatus), also known as "Australian freshwater lobster", originates in Australia and is also distributed in New Guinea. Guangdong and Hubei Trial breeding in two provinces was successful. Red claw crayfish is generally 50-100 grams in size, and the largest individual is 500-600 grams. It is a kind of freshwater shrimp with strong adaptability. It has a wide appetite, fast growth, tender meat, delicious taste and rich nutrition. , Japan, especially in the Chinese market by the majority of consumers. [0003] At present, in order to meet the needs of consumers, the method of artificial breeding is generally used to preserve the eggs of the red crayfish. It is well known that the red crayfish is an egg-bearing shrimp in vitro, and the fert...

AI Technical Summary

Problems solved by technology

[0003] At present, in order to meet the needs of consumers, the method of artificial breeding is generally used to preserve the eggs of the red crayfish. It is well known that the red crayfish is an egg-bearing shrimp in vitro, and the fertilized egg juveniles are attached to the abdomen of the female shrimp and external environmental factors To a certain extent, it has a significant impact on the hatching process (for example, proper temperature can greatly shorten the hatching time of fertilized eggs, improve the survival rate and quality of juvenile shrimp), and the existing methods of artificial breeding and species conservation do not have or do not consider this aspect. Perfection, resulting in long breeding and conservation period, low survival rate, low quality and unnecessary capital investment