Method and device for hatching prawn larva

Abstract

The invention relates to a method for hatching a prawn larva, which is characterized by comprising the following steps of: 1. designing a prawn hatching device; 2. preparing a hatching water body; 3. fertilizing and hatching prawn ova; and 4. collecting and washing the larva. The hatching device adopted for realizing the method for hatching a prawn larva comprises a hatching barrel, a hatching barrel cover, an illuminating device and a collecting and washing device, wherein the hatching barrel and the hatching barrel cover are integrated into a whole; a light hole and an inflating pipe which is connected with a micropore plug are arranged on the hatching barrel cover; and the illuminating device is arranged above the light hole. By utilizing the phototaxis of a prawn, strong prawn larvae are selected, and weak prawn larvae and dead ova are removed, which is convenient for collecting the high-quality larva and greatly improving the survival rate of a seedling. The invention can be also used for simultaneously collecting seedlings from a plurality of hatching barrels, thereby saving time and labor and being simple, particle and effective.

Description

technical field [0001] The invention belongs to the technical field of aquatic animal breeding, and in particular relates to a hatching method and device for prawn larvae. Background technique [0002] Shrimp farming is one of the most important industries in my country's aquaculture industry, such as: Penaeus vannamei, Penaeus monodon, Penaeus japonicus, Penaeus villosa, etc. Among them, the farming of Penaeus vannamei has become one of the pillar industries of the mariculture industry. After decades of development, although my country's shrimp farming has made remarkable economic achievements, people have gradually realized that whether there are germplasm with excellent farming performance is the key to ensuring the stable development of shrimp farming. It is an effective measure to solve the problem to carry out the selection and breeding of shrimp varieties. In the process of family breeding of prawns, whether to obtain high-quality family larvae is one of the keys to s...

AI Technical Summary

Problems solved by technology

[0003] However, the inventors found that the above patents can basically separate the dead eggs from the larvae, but there is still a certain shortcoming, that is, the current technology still cannot distinguish the larvae with weak vitality from the larvae with strong vitality, so only the weaker larvae can be separated. Breeding with larvae with good physique will seriously affect the quality of shrimp seedlings

Images