Breeding method capable of controlling aberration rate and body color abnormity of verasper variegatus seedlings

A technology of deformity and deformity of star flounder, which is applied in the field of aquatic seed breeding, can solve the problems of abnormal body color and high deformity rate of star flounder seed, and achieve high survival rate, simple and easy strengthening operation, and high seed quality. Good results

Inactive Publication Date: 2013-04-03
YELLOW SEA FISHERIES RES INST CHINESE ACAD OF FISHERIES SCI
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Problems solved by technology

[0005] The technical problem to be solved by the present invention is to provide a breeding method for controlling the deformity rate and abnormal body color of the star flounder seed, so as to solve the problems of high deformity rate and abnormal body color of the star flounder seed

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  • Breeding method capable of controlling aberration rate and body color abnormity of verasper variegatus seedlings

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Embodiment Construction

[0014] Describe technical content of the present invention in detail below by embodiment.

[0015] 1. Strengthen the choice of time

[0016] Put the harvested rotifers into a rotifer strengthening bucket with filtered seawater. The strengthening density of rotifers is 200-300 / ml. Add it into the strengthening barrel, and the strengthening dose is 0.1g / L for 9 hours. Afterwards, selenium-containing yeast (1000 mg / kg selenium content) was added to the fortified water body at a dose of 0.003 g per million rotifers, for 1.5, 3 and 4.5 hours respectively, and three samples were taken at each time point. During the strengthening period, it should be fully inflated, and the dissolved oxygen should not be lower than 5 mg / L. After the strengthening, the collected rotifers were washed with clean sea water, filtered through a 300-mesh sieve to remove excess water, put into a 5ml centrifuge tube, and immediately placed in a -20°C cryopreservation until the content of selenium in the rot...

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Abstract

The invention relates to a breeding method capable of controlling the aberration rate and the body color abnormity of verasper variegatus seedlings and belongs to the field of aquatic seedling culture. The method comprises the following steps of: feeding reinforced rotifer to fish larvae of verasper variegatus, which are at the age of 5 to 6 days; when the verasper variegatus grows to the age of 19 to 21 days, simultaneously feeding artemia nauplii and reducing the feeding quantity of the rotifer until the verasper variegatus grows to the age of 34 to 36 days; and then starting to completely feed the artemia nauplii, wherein the artemia nauplii is reinforced by schizochytrium limacinum and the rotifer is reinforced by se-yeast after being reinforced by the schizochytrium limacinum. According to the invention, the Se-yeast is used as a reinforcer of the rotifer; content of selenium in a bait is improved; the fish larvae of verasper variegatus can be promoted to grow; the metamosphsis rate of the fish larvae of verasper variegatus is promoted; the aberration rate and the ratio of the body color abnormity are effectively reduced; survival rate is high; and the seedlings have high quality.

Description

technical field [0001] The invention belongs to the field of aquatic seed breeding, and in particular relates to a breeding method for controlling the deformity rate and abnormal body color of starfish seedlings. Background technique [0002] Verasper variegatus (Verasper variegatus) belongs to the order Pleuronec tiformes, the family Pleuronectidae, and the genus Verasper. It is commonly known as piebald treasure, flower leopard, and lace claw. It is distributed in the Yellow Sea and the Bohai Sea. The star flounder is a large benthic fish with an oval body, graceful body shape and colorful colors. It is a traditional rare fish species in northern my country. The "flower" of the folk proverb "chunhuaqiu sole" is "Piebald treasure". Due to its large eggs and weak fecundity, coupled with the impact of overfishing and environmental changes, its natural resources have declined significantly, and its fishing volume has decreased year by year. Especially in recent years, it has b...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01K61/00
CPCY02A40/81
Inventor 常青陈四清王志军其他发明人请求不公开姓名
Owner YELLOW SEA FISHERIES RES INST CHINESE ACAD OF FISHERIES SCI
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