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Method for breeding 'blue spot' hybrids

A technology of Qinglong and oblique grouper, applied in fish farming, application, climate change adaptation and other directions, to achieve the effects of fast growth, strong adaptability and high survival rate

Active Publication Date: 2014-05-07
广东省大亚湾水产试验中心 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

There have been some researches on the hybrid breeding of seawater fish at home and abroad, but there are still few seawater fishes bred by crossbreeding.

Method used

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  • Method for breeding 'blue spot' hybrids

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Experimental program
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Effect test

Embodiment Construction

[0016] The specific steps of the hybridization "Qinglongban" breeding test are as follows:

[0017] (1) Breeding and screening of broodstock: The broodstock is usually raised in the broodstock breeding pond, fed with fresh miscellaneous fish, intensively cultivated one month before the breeding season, and fed with enhanced feed for the broodstock. Before mating, the broodstock were caught, and their traits and gonads were checked one by one. Choose healthy broodstock with no injuries on the body surface and no deformities; females of the oblique grouper require obvious swelling of the abdomen and the development of ovaries to stage IV; males of the saddle grouper require light pressure on the abdomen to have white semen flow out;

[0018] (2) Hybrid parent matching: select the female individual of the grouper as the female parent, and the male of the saddle-banded grouper as the male parent during mating;

[0019] (3) Oxytocin: During the grouper breeding season, inject oxyt...

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Abstract

The invention discloses a method for breeding 'blue spot' hybrids. In the invention, hybrid 'blue spot' fry is produced by selecting single female epinephelus coioides as a female parent and single male epinephelus lanceolatus as a male parent and by distant hybridization, artificial parturition expediting, insemination, incubation and fry breeding. The method for breeding the 'blue spot' hybrids of the invention is simple in operation and suitable for mass production; the bred 'blue spot' fry has a survival rate of 5 to 10 percent and a breeding survival rate of over 95 percent, and both the survival rates are higher than those of the common groupers, so that the bred 'blue spot' fry has a promising market prospect.

Description

technical field [0001] The invention relates to a method for breeding seawater fish, in particular to a method for cultivating hybrid "Qinglongban" fry. Background technique [0002] Grouper (Epinephelus sp.) is one of the famous and valuable marine fishes in the world. Its meat is tender and delicious, its market price is high, and its market is good. In 2004, the Food and Agriculture Organization of the United Nations listed grouper, tuna and yellowtail as the three most promising farmed fish in the next 20 years. In recent years, many countries in China, Taiwan, Japan, South Korea, Southeast Asia and Oceania are actively carrying out artificial breeding of grouper. [0003] The grouper (Epinephelus coioides) is medium-sized in the genus Grouper, and its growth rate is average. It is relatively easy to breed broodstock and seedlings. At present, the technology is relatively mature, and it is easy to obtain mature eggs or fertilized eggs through induced laying. Saddle-ban...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A01K61/00
CPCY02A40/81
Inventor 张海发林浩然张勇王云新李水生黄国光梁伟峰欧冲辉杨少森黄培卫张磊
Owner 广东省大亚湾水产试验中心
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