Superlarge-scale economic larva-breeding method for parents of eriocheir sinensis

Abstract

The invention discloses a superlarge-scale economic larva-breeding method for parents of eriocheir sinensis in the technical field of artificial breeding of eriocheir sinensis larvae. The method comprises the following steps: (1) selecting the parents of the eriocheir sinensis, and carrying out temporary rearing, wherein the weight of the female eriocheir sinensis is more than 250g, and the weightof the male eriocheir sinensis is more than 350g; (2) carrying out mating and overwintering on the parents of the eriocheir sinensis; (3) hanging egg-carrying eriocheir sinensis in a cage; and (4) breeding the larvae. According to the method, a novel breeding technique is used in each propagation stage of the eriocheir sinensis, and a traditional breeding method is updated, so that a series of problems of low egg-carrying rate of the parents and overwintering survival rate, difficulty in metamorphosis of the larvae and low survival rate in a superlarge-scale breeding process of the parents ofthe eriocheir sinensis in the past are solved, the deadlock of a technical blank in the superlarge-scale propagation technique of the eriocheir sinensis is broken through, and a set of mature technical system for the superlarge-scale breeding of the parents is established.

Description

technical field [0001] The invention belongs to the technical field of artificial seedling cultivation of mitten crab sinensis, and in particular relates to a method for ecological seedling cultivation of super-large parents of mitten crab sinensis. Background technique [0002] Chinese mitten crab ( Eriocheir sinensis ), commonly known as river crab, is a traditional economic breeding species in China. In recent decades, the seedling production of river crab has been increasing year by year, but the parents used for breeding in the market are also mixed, and the utilization rate of improved species is low and the size is small, resulting in the germplasm of river crab Recession directly affects the later adult crab breeding, eventually leading to a vicious circle. [0003] In addition, with the improvement of living standards, the ancestral imprint of pursuing "big" for thousands of years has gradually appeared in the field of river crab consumption. Consumers are not sati...

AI Technical Summary

Problems solved by technology

[0002] Chinese mitten crab ( Eriocheir sinensis ), commonly known as river crab, is a traditional economic breeding species in China. In recent decades, the seedling production of river crab has been increasing year by year, but the parents used for breeding in the market are also mixed, and the utilization rate of improved species is low and the size is small, resulting in the germplasm of river crab Recession directly affects the later adult crab breeding, eventually leading to a vicious circle

[0003] In addition, with the improvement of living standards, the ancestral imprint of pursuing "big" for thousands of years has gradually appeared in the field of river crab consumption. Consumers are not satisfied with the status quo of eating crabs, and there is a strong demand for ecological large crabs.

However, the current existing breeding technology is applied to the breeding process of super-large parents, which has the following disadvantages: the effect is not ideal, the parent's oviposition rate is low, the survival rate of overwintering is low, and the survival rate of larvae is low. The efficiency of buckling crab and adult crab breeding is low