Breeding method of new thin-shell crassostrea hongkongensis variety

A technology for Hong Kong oysters and new strains is applied in the field of seed production of new strains of Hong Kong oysters with thin shells, which can solve the problems of not cultivating excellent new varieties of Hong Kong oysters, and achieve the effects of easy promotion, strong practicability and simple operation.

Active Publication Date: 2014-07-02
SOUTH CHINA SEA INST OF OCEANOLOGY - CHINESE ACAD OF SCI
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Problems solved by technology

Regrettably, so far, scholars have not yet bred new fine varieties of Hong Kong oysters

Method used

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  • Breeding method of new thin-shell crassostrea hongkongensis variety

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Embodiment 1

[0021] The seed production method of the Hong Kong oyster thin-shell new strain of the present embodiment is as follows: figure 1 shown.

[0022] a. Initial screening: On June 10, 2012, during the oyster breeding season in Hong Kong, the shell thickness of five groups from Hengqin, Zhenhai Bay, Shenzhen Deep Bay, Guangxi Beihai, and Qinzhou were compared for shell thickness. 500 individuals; the shell weight, total weight, and fresh meat weight of each individual in each group were measured, and the proportion of shell weight and fresh meat weight was calculated (Table 1). It was found that the shells of the Zhenhaiwan population were relatively the thinnest, with an average shell weight of 73.6%, and a relatively high meat production rate of 18.3% on average.

[0023] b. Secondary optimization: the Zhenhaiwan population is used as the core group of thin shells, and 10% of the 500 individuals in step a have the thinnest shells and the highest meat yield as the preferred group...

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Abstract

The invention discloses a breeding method of a new thin-shell crassostrea hongkongensis variety. Crassostrea hongkongensis are different in shell thickness due to different breeding regions and are even of polymorphic biological characteristics of shell thickness in the same breeding regions, and according to the principle of negative correlation of the shell thickness and the dressing percentage, quantitative and economic synergic selection is realized by technical means of primary selection and secondary selection of shell thickness, self-breeding of population, oriental pure-breeding and the like in different breeding regions, and the new thin-shell crassostrea hongkongensis variety which is high in production and quality and stably genetic is obtained. Dressing percentage of 13-17% in conventional bred oysters is improved to 22-25%, and is improved by 30-90%, and firm practice foundation is created for improving yield of the breeding industry of the crassostrea hongkongensis. The breeding method has the advantages of simplicity and convenience in operation, high practicality, proneness to popularization and the like.

Description

Technical field: [0001] The invention belongs to the field of genetic breeding of shellfish in modern marine agriculture, and in particular relates to a seed production method of a new Hong Kong oyster thin shell strain. Background technique: [0002] Hong Kong oyster Crassostrea hongkongensis is the main economic species of coastal culture in South my country. It likes to live near estuaries or places with fresh water injection. It is mainly distributed in Guangdong, Guangxi and other places. The annual output is more than 1.3 million tons, and the output value is 8-10 billion. Yuan (China Fisheries Yearbook, 2013). Compared with other types of oysters, the value of Hong Kong oysters is mainly reflected in their large body, fat meat, and delicious taste. In addition, their market value is much higher than that of other types of oysters, and they are favored by consumers in Guangdong, Guangxi, Hong Kong, Macao, and Southeast Asian countries (Zhang Yuehuan, etc., 2014). [0...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01K61/00
CPCY02A40/81
Inventor 张跃环肖述李琼珍张扬李军喻子牛
Owner SOUTH CHINA SEA INST OF OCEANOLOGY - CHINESE ACAD OF SCI
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