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A method of inducing gynogenetic yellow croaker pseudo-male

A technology for gynogenesis and yellow croaker, applied in the field of aquatic organisms, can solve the problems such as the inability to meet the market demand of yellow croaker seed

Active Publication Date: 2016-08-24
MARINE FISHERIES RES INST OF ZHEJIANG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Artificial gynogenesis has laid the foundation for the full feminization of fish, but only a very small amount of seedlings can be obtained through the method of gynogenesis, which cannot meet the market demand of yellow croaker fry. The research has important theoretical value and application value for the large-scale breeding of all-female seedlings
[0004] The full feminization of yellow croaker can well solve the problems encountered in the process of seedling breeding and cage culture. The key to the full feminization of fish is to produce fertile pseudo-male fish. Literature reports on fish pseudomale

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] (1) Raise the gynogenetic croaker fish induced by the sperm of the stone seabream to the age of 20 days;

[0024] (2) During the breeding period, control the stocking density and water bottom area according to the age of the yellow croaker: at the age of 20-39 days, the stocking density is 50 fish per 300L water body, and the bottom area of ​​the water body should not be less than 0.8m 2 ; When the age is 40-69 days, the stocking density is 50 fish per 500L water body, and the bottom area of ​​the water body should not be less than 1.25m 2 ; 50 fish per 1000L water body for 70-90 days old, and the bottom area of ​​the water body should not be less than 2.00m 2

[0025] (3) From the age of 21 days, the gynogenetic yellow croaker is soaked in methyltestosterone solution every day, the concentration of methyltestosterone solution is 2ppb (that is, every 100L of breeding water, add 2ml of methyltestosterone mother solution), 2 hours a day, and completely change the water a...

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Abstract

The invention discloses a method for inducing pseudo milters of gynogenesis spotted maigre and belongs to the technical field of aquatic biology. The pseudo milters of the spotted maigre can be obtained by using male hormone for induction during the breeding process of the gynogenesis spotted maigre, and the male hormone is methyltestosterone. The method is reasonable in design, the methyltestosterone is utilized for induction, induction steps are scientifically and reasonably limited, the finally obtained male rate of the gynogenesis spotted maigre can reach more than 86%, and theoretical and technical guidance is provided for qualitative breeding of the gynogenesis spotted maigre.

Description

technical field [0001] The invention belongs to the technical field of aquatic organisms, and in particular relates to a method for inducing gynogenetic yellow croaker pseudo-male. Background technique [0002] Yellow croaker belongs to Perciformes (Perciformes), Sciaenidae, and genus Nibea. It is distributed in the Yellow Sea, Bohai Sea, East China Sea and South China Sea. It is a warm-water middle and lower layer fish. . It grows fast, has strong disease resistance, tender meat, unique taste, and delicious taste. Its swim bladder is a precious Chinese medicine tonic with high edible value and medicinal value. [0003] During the process of raising yellow croaker in cages, it was found that female croakers weighed 30% more than males, and with the growth of croaker, the difference between male and female individuals would further increase (Xu Dongdong et al., Fishery Modernization, 2010); During the process of artificial breeding of croaker, it was found that when the bod...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A01K61/00
CPCY02A40/81
Inventor 陈睿毅楼宝徐冬冬刘海金詹炜毛国民徐麒翔马涛
Owner MARINE FISHERIES RES INST OF ZHEJIANG