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Distant hybridization method for hucho trout and brachymystax lenok

A technology of distant hybridization and crocodile, applied in fish farming, medical science, climate change adaptation, etc., can solve problems such as differences in reproductive habits, inability to hybridize, and distant kinship between crocodile and leptospirosis. Achieve the effects of avoiding the loss of species, easy domestication, and good meat taste

Inactive Publication Date: 2008-12-10
HEILONGJIANG RIVER FISHERY RES INST CHINESE ACADEMY OF FISHERIES SCI
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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 solve the problem that the genus and leptospirosis can not hybridize due to their distant kinship and differences in reproductive habits;

Method used

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Examples

Experimental program
Comparison scheme
Effect test

specific Embodiment approach 1

[0007] Specific embodiment one: the method for the distant hybridization of the present embodiment crocodile and leptospirosis adopts the following steps to carry out: one, the simulative crocodile that is 2~20 ℃ with the sexually mature crocodile female fish is stocked in a water temperature Cultivate in the breeding pool of natural spawning environment; at the same time, put the sexually mature leptospirosis males in stocking in the breeding pool that simulates the natural spawning environment of leptospirosis with a water temperature of 2-20°C for cultivation; The water temperature in the breeding pond of the fish's natural spawning environment is 3-5°C. The abdomen of the female salmon is plump and soft. Use a plastic hose to check that the egg diameter exceeds 3 mm through the reproductive hole, and inject the ripening drug into the female salmon; 3. After 48 hours of injecting the ripening drug to the female fish of the giant crocodile fish, inject the oxytocin drug to th...

specific Embodiment approach 2

[0009] Specific embodiment 2: The difference between this embodiment and specific embodiment 1 is that in step 1, the depth of water for cultivating the female crocus is 80-120 cm. Others are the same as in the first embodiment.

specific Embodiment approach 3

[0010] Specific implementation mode three: the difference between this implementation mode and specific implementation mode one is that in step one, the depth of water for cultivating the female fish of the giant crocodile is 90-110 cm. Others are the same as in the first embodiment.

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Abstract

The invention provides a distant hybridization method for taimen and brachymystax lenok, relating to a hybridization method for fishes belonging to two different salmon families. The invention solves the problem that the taimen and the brachymystax lenok can not be hybridized due to far genetic relationship and different breeding habit. The method of the invention comprises the steps as follows: 1. cultivating is carried out; 2. the female taimen is ripened; 3. induced spawning of the female taimen and the male brachymystax lenok are respectively carried out; 4. fertilized eggs are obtained; 5. hatching is carried out. The method of the invention leads two fishes with different living and breeding habits, classification statuses, genetic relationships and laying seasons to mature and carry out the spermiation and ovulation in the same period, and the hybrid is obtained; furthermore, the fertilization rate is more than 85% and the hatching rate is more than 80%. The hybrid obtained by the method of the invention inherits the characteristic of the brachymystax lenok and the taimen, is easy to be domesticated and has good meat-taste, quick growing speed and strong disease-resistance capability.

Description

technical field [0001] The invention relates to a hybridization method of two fishes of different genus Salmonidae. Background technique [0002] Although both Zheluo fish and leptospirosis belong to the cold-water salmonids indigenous to Northeast my country, they are far related. Zheluo is a freshwater fish. It is a large carnivorous cold-water fish. It is suitable for living in water below 22°C. It grows fast, has a long growth period, and has poor meat quality compared to fine-scale fish. The spawning period is from March to April. (Heilongjiang), the eggs are laid on the bottom of the clear gravel river with rapid current. The leucopus is a small and medium-sized cold fish, omnivorous, and its growth is slightly slower than that of the tilapia, with a shorter growth cycle. The meat is tender and delicious, with high protein content and low fat content. The spawning period is from May to June (Heilongjiang), and the eggs are laid on the gravel bottom with clear water a...

Claims

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Application Information

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IPC IPC(8): A01K61/00A61D19/02
CPCY02A40/81
Inventor 徐革锋牟振波杜佳李永发
Owner HEILONGJIANG RIVER FISHERY RES INST CHINESE ACADEMY OF FISHERIES SCI