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Method capable of improving adhesion rate of sea cucumber seedlings and survival rate of young sea cucumbers

A technology of attachment rate and survival rate is applied in the breeding field where the attachment rate of sea cucumber seedlings and the survival rate of juvenile cucumbers are significantly improved. The effect of improving the adhesion rate

Inactive Publication Date: 2011-04-06
OCEAN UNIV OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Nowadays, the attachment rate and survival rate of seedlings are generally low. The reason is that there is a lack of a good attachment base and suitable sea cucumber seedling cultivation technology.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0008] 1. Egg collection and hatching of fertilized eggs for parent ginseng: buy sea cucumbers with large individuals and mature gonads from the farm as parent ginseng for seedling cultivation. After draining the holding pond, dry the ginseng in the shade for 45 minutes, and then stimulate it with running water for 45 minutes. The combined method of drying in the shade and stimulating with running water can make the sea cucumber spawn simultaneously and increase the spawning amount of the sea cucumber. Afterwards, put the parent ginseng along the pool wall into the spawning pool whose water temperature has been adjusted to 20°C. After the female ginseng ovulates, the male ginseng is continuously taken out, and the ratio of sperm and eggs in the spawning pool is controlled at 3-5:1. After fertilization, pools are divided by siphon method, and the density of fertilized eggs is controlled at 800,000 eggs / m 3 about. During the hatching of the fertilized eggs, the excess sperm is ...

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Abstract

The invention relates to a method capable of improving the adhesion rate of sea cucumber seedlings and the survival rate of young sea cucumbers, which comprises the following steps of: firstly, carrying out parental sea cucumber egg taking and fertilized egg hatching; then breeding larva with baits; putting polyparies so that the young sea cucumbers adhere to; and finally feeding the baits to breed the young sea cucumbers; and peeling the young sea cucumbers off the polyparies after a majority of young sea cucumber bodies grow to 15-20mm. The method is characterized in that the baits utilized in the initial period of larva breeding are Chaetoceros muelleri and utilized in the later period are a mixed alga solution of Chaetoceros muelleri, Nitzschia closterium minutissima and Dicrateria inornata; the polyparies are the optimized polyparies; and the baits of the young sea cucumbers after adhesion are fresh sea mud and matched fermented fodders. The invention can not only improve the adhesion rate and the survival rate of the sea cucumber seedlings, but also produce the optimized polyparies through utilizing an aged transparent polyethylene corrugated plate to reduce the seedling-breeding cost.

Description

technical field [0001] The invention relates to the field of mariculture, in particular to a cultivation method capable of significantly improving the attachment rate of sea cucumber seedlings and the survival rate of juvenile ginseng. Background technique [0002] The sea cucumber currently used as a cultured product is also known as the imitation sea cucumber [Apostichopus japonicas (Selenka)]. The genus (Apostichopus) is a typical temperate species. my country's sea cucumber artificial breeding technology began in 1954. Zhang Fengying and others used methods such as dissecting gonads to artificially fertilize and cultivate ear-shaped larvae, and then cultivated juvenile and juvenile ginseng. By the 1980s, breakthroughs had been made in sea cucumber seedling raising technology, and a new technology for industrial seedling raising was established. Since then, sea cucumber seedling technology has made great progress. Especially in Liaoning, Shandong and other places, the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01K61/00
CPCY02A40/81
Inventor 包卫洋刘超马甡孙景春
Owner OCEAN UNIV OF CHINA