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Water-free hatching method for medaka eggs

A technology for fish eggs and medaka, applied in the field of aquaculture, to achieve high water utilization rate and avoid excessive hatching time gap

Inactive Publication Date: 2020-03-13
FUZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a waterless hatching method for medaka fish eggs, which can solve the defects of the existing hatching methods, greatly reduce the problem of fish eggs dying due to hypoxia during the hatching process, and if any fish eggs die, it is not easy to infect Other fish eggs, avoiding mass death in the hatching of fish eggs, and improving the hatching rate of fish eggs

Method used

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  • Water-free hatching method for medaka eggs
  • Water-free hatching method for medaka eggs
  • Water-free hatching method for medaka eggs

Examples

Experimental program
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Effect test

Embodiment 1

[0027] A kind of anhydrous hatching method of the roe of killifish roe, comprises the following steps:

[0028] (1) Fish roe collection: Use a soft fishing net with a hole diameter of 0.8-1mm to fish out the seedling fish with fertilized eggs, and gently pinch the fish eggs to separate them from the seedling fish;

[0029] (2) Separation of fish eggs and selection of fertilized eggs: Gently rub the fish eggs with the index finger and thumb to separate the fish eggs after being stressed, and some unfertilized eggs are broken by the force. After the fish eggs are separated, use a straw to remove the white unfertilized eggs Egg picking to obtain fertilized eggs;

[0030] (3) Rinse and disinfect fish eggs twice with 2ppm potassium permanganate solution;

[0031] (4) Spread absorbent tissue paper with a thickness of 1-2mm on the bottom of a rectangular moisturizing plastic hatching box with a cover. The size of the plastic hatching box is 20cm×10cm, the height is 6-8cm, and a vent...

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Abstract

The invention discloses a water-free hatching method for medaka eggs. The problems of anoxic death of the fish eggs in hatching process are greatly reduced, and if the fish eggs die, other fish eggs are not easily infected, so that large-scale death in fish egg hatching is avoided, and the hatching rate of the fish eggs is improved. By the method, the hatching time of the fish eggs can be adjusted, a batch of fish can be controlled to break the eggs at the same time, and collection and management of the fish eggs are facilitated.

Description

technical field [0001] The invention belongs to the technical field of aquaculture, and in particular relates to a waterless hatching method for medaka eggs. Background technique [0002] Medaka (Guanbei medaka) is a new ornamental fish species. Currently, the commonly used hatching method is the conventional hatching method of ornamental fish eggs: placing them in water for incubation with temperature control and oxygenation. The existing method is easy to cause anoxic death of fish eggs during the hatching process. Once one or two fish eggs die, it is easy to mold and then cause infection of surrounding fish eggs, resulting in hatching failure of large areas of fish eggs. Moreover, the conventional hatching method is cumbersome to operate, and the water needs to be changed every day. Contents of the invention [0003] The purpose of the present invention is to provide a waterless hatching method for medaka fish eggs, which can solve the defects of the existing hatching ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01K61/17
CPCA01K61/17Y02A40/81
Inventor 阮成旭丘英栋
Owner FUZHOU UNIV
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