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Seed producing method for obtaining hybrid advantage of crassostrea gigas

A technology of hybrid vigor and oyster growth, applied in fish farming, application, climate change adaptation, etc., to achieve strong disease resistance, simple method, and high survival rate

Inactive Publication Date: 2010-02-10
OCEAN UNIV OF CHINA
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But so far there is no report of hybridization between populations of long oyster to obtain heterosis

Method used

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  • Seed producing method for obtaining hybrid advantage of crassostrea gigas
  • Seed producing method for obtaining hybrid advantage of crassostrea gigas
  • Seed producing method for obtaining hybrid advantage of crassostrea gigas

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Embodiment Construction

[0007] The present invention will be described in further detail below in conjunction with the examples.

[0008] 1. Select relatives for temporary raising

[0009] The Chinese long oyster population used in the present invention was taken from Rushan, Shandong in February 2008, and the Korean long oyster population was taken from Busan, South Korea in January 2008. Select healthy individuals with large individuals, regular shell shapes, and temporarily raise them indoors in seawater at 5-10°C after entering the pool.

[0010] 2. Synchronized ripening

[0011] The above-mentioned long oysters temporarily raised indoors are poured into the pool 1-2 times a day, fed with diatoms, flat algae and starch bait.

[0012] 3. Hybridization using artificial insemination

[0013] The above-mentioned mature oysters were dissected, and a little gonad tissue was taken and placed on a glass slide dripped with seawater. The eggs were scattered in the form of particles, and the sperm were s...

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Abstract

The invention relates to a seed producing method for obtaining the hybrid advantage of a crassostrea gigas, which is characterized by comprising the following steps: selecting Chinese and Korean crassostrea gigases as parent oysters to carry out temporary culture; ripening the Chinese and Korean crassostrea gigases synchronously; then hybridizing sperms and ovums of the Chinese and Korean crassostrea gigases by artificial insemination; and finally carrying out the incubation, the seed culture and the growth of the hybridized oyster. The invention cultures a crassostrea gigas hybridized seed with high disease resistance and survival rate and rapid growing speed by hybridizing two crassostrea gigas geographic populations with reproductive isolation; the production performance of the crassostrea gigas hybridized seed is obviously better than that of a Chinese locally inbred comparison population; and the method is simple and has favorable industrialized application prospect.

Description

technical field [0001] The invention relates to a method for preparing a new intraspecific hybrid line of the long oyster (Crassostrea gigas), in particular to a seed production method for obtaining the heterosis of the long oyster by hybridizing different geographical groups of the long oyster, and belongs to the breeding technology of new marine organisms field. Background technique [0002] Long oyster, also known as Pacific oyster, belongs to Mollusca, Lamellibranchia, Pterimorphia, Pterioida, Ostridea. Long oyster is an important economic species because of its high nutritional value, and because of the breakthrough of oyster indoor factory artificial seedling production technology, it provides a sufficient seed source for the development of oyster aquaculture. Therefore, the long oyster farming areas in my country are all over the north and south coasts. With the expansion of aquaculture scale and a substantial increase in output, the quality of oysters is declining,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01K61/00
CPCY02A40/81
Inventor 李琪藤爽爽于瑞海孔令峰郑小东
Owner OCEAN UNIV OF CHINA
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