Acipenser dabryanusroehatching method

A technology of Dabry's sturgeon and fish eggs, which is applied in the hatching field of Dabry's sturgeon eggs, can solve the problems of agglomeration death, unfavorable artificial reproduction, and water mold of fish eggs, so as to improve the survival rate and prevent short-term large-scale occurrence Effect

Inactive Publication Date: 2016-12-07
FISHERIES INST SICHUAN ACADEMY OF AGRI SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this method needs to remove dead eggs in time. If it is not removed in time, it will easily cause fish eggs to die due to water mold and agglomeration, which is not conducive to large-scale artificial reproduction.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0012] Hatch the fertilized eggs of Dabry's sturgeon in running water. When the fertilized eggs hatch to the stage of rhubarb plug, soak them in 150ppm formaldehyde solution for 30 minutes, rinse slowly with clean water after soaking, and then return to running water for hatching. After that, observe the hatching of the fertilized eggs until the fish come out of the membrane , no obvious saprolegnia agglomeration phenomenon was found. Observe that the fertilized eggs of the control group (the same batch of fish eggs that have not been soaked in formaldehyde) have certain saprolegnia agglomeration before hatching to the film. Statistics show that the survival rate of the control group is 37%, and the survival rate of the experimental group is 63%.

Embodiment 2

[0014] Hatch the fertilized eggs of Dabry's sturgeon in running water. When the fertilized eggs hatch to the rhubarb suppository stage, soak them in 200ppm formaldehyde solution for 30 minutes, rinse slowly with clean water after soaking, and then return to running water for hatching. After that, observe the hatching of the fertilized eggs until the fish come out of the membrane , no obvious saprolegnia agglomeration phenomenon was found. Observe that the fertilized eggs of the control group (the same batch of fish eggs that have not been soaked in formaldehyde) have certain saprolegnia agglomeration before hatching to the film. Statistics show that the survival rate of the control group is 37%, and the survival rate of the experimental group is 54%.

Embodiment 3

[0016] Hatch the fertilized eggs of Dabry's sturgeon in running water. When the fertilized eggs hatch to the rhubarb suppository stage, soak them in 250ppm formaldehyde solution for 30 minutes, rinse slowly with clean water after soaking, and then return to running water for hatching. After that, observe the hatching of the fertilized eggs until the fish come out of the membrane , no obvious saprolegnia agglomeration phenomenon was found. Observe that the fertilized eggs of the control group (the same batch of fish eggs that have not been soaked in formaldehyde) have certain saprolegnia agglomeration before hatching to the membrane. Statistics show that the survival rate of the control group is 37%, and the survival rate of the experimental group is 50%.

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PUM

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Abstract

The invention provides a method for hatching eggs of Sturgeon dabryi, comprising: using 150-250ppm concentration of formaldehyde solution to statically soak the fertilized eggs for 20-40 minutes during the hatching period of fertilized eggs of Dabry's sturgeon in running water to the stage of rhubarb suppository; Rinse the fertilized eggs with clean water, and then continue to incubate the fertilized eggs with running water until the fish come out of the membrane. The method provided by the invention can prevent saprolegniasis from occurring in a large area in a short period of time without affecting the normal development of fish eggs, and the method is simple and feasible. Experimental results show that the method provided by the invention can greatly improve the survival rate of the dabry's sturgeon.

Description

technical field [0001] The invention relates to the technical field of artificial reproduction, in particular to a method for hatching eggs of Sturgeon dabryi. Background technique [0002] The Dabry's sturgeon, also known as the Yangtze River sturgeon and Shalazi, is a unique species in my country. In 1988, it was listed as a first-class national key protected animal. At present, the wild resource of Dabry's sturgeon is extremely scarce, and the species is mainly protected through captive breeding. However, in the process of artificial reproduction of Dabry's sturgeon, especially in the hatching stage of fertilized eggs, saprolegniasis has become the most serious disease that harms the development of fertilized eggs of Dabry's sturgeon, causing great losses. [0003] Saprolegniasis is commonly known as white hair disease and skin mildew. Its pathogens are some species of Saprolegniaceae. Saprolegnia has strong environmental adaptability and reproductive ability, and can s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01K61/00
CPCY02A40/81A01K61/00
Inventor 刘亚龚全杜军赵刚刘光迅赖见生林珏肖宇
Owner FISHERIES INST SICHUAN ACADEMY OF AGRI SCI
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