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

A kind of technology of round-spotted flounder and deformity, which is applied in the field of aquatic fry breeding, can solve the problems of high deformity rate and abnormal body color of round-spotted star flounder seedlings, and achieves simple and easy operation, high survival rate, and reduction of deformity. The effect of the rate and the ratio of body color abnormalities

Inactive Publication Date: 2014-09-03
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 discloses a breeding method for controlling the deformity rate and abnormal body color of star flounder seedlings, which belongs to the field of aquatic seed cultivation. The 5-6-day-old larvae of star flounder are fed with strengthened rotifers, and the seedlings of star flounder are fed with strengthened rotifers. At the age of 19-21 days, Artemia nauplii were fed at the same time, and the feeding amount of rotifers was reduced until the end of 34-36 days, and then Artemia nauplii was completely fed; The larvae were fortified with Schizochytrium sp.; the rotifers were fortified with Schizochytrium sp. and then fortified with selenium yeast. In the present invention, selenium yeast is used as a strengthening agent for rotifers to increase the content of selenium in the bait, which can promote the growth and metamorphosis rate of the larvae, effectively reduce the deformity rate and the ratio of abnormal body color, and have a high survival rate. Seed quality is good.

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] The round-spotted star flounder (Veraspervariegatus) belongs to the order Pleuronectiformes, 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...

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Application Information

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Patent Type & Authority Patents(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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