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Breeding method of new halophilic crassostrea hongkongensis variety

A technology for Hong Kong oysters and new strains, which is applied in the field of seed production of new strains of Hong Kong oysters with high salt tolerance, can solve the problems of not cultivating new excellent varieties of Hong Kong oysters, etc. Effect

Active Publication Date: 2014-07-02
SOUTH CHINA SEA INST OF OCEANOLOGY - CHINESE ACAD OF SCI
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AI Technical Summary

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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Experimental program
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Embodiment 1

[0019] a. Parental selection: On July 5, 2010, divers were hired to harvest 200 wild Hong Kong oysters of 2-3 years old in Hong Kong Deep Bay (water depth 5-10m) with an annual average salinity ≥ 24ppt, as a high-salt-tolerant parent group.

[0020] b. Parental maturation promotion: put 200 individuals into 10 scallop cages and place them in a pond with a salinity of 27-30ppt for ecological maturation promotion. After 15 days of ripening, 162 Hong Kong oyster gonads matured, and the remaining 38 dead individuals were discarded.

[0021] c. Progeny breeding: 162 Hong Kong oysters were used as a breeding group, and the group self-propagation was carried out in seawater with a salinity of 27-30ppt. The method of dissection was adopted, and after fertilization and hatching, larvae cultivation, juvenile growth, and juvenile growth, to obtain tolerance High-salt new strain F1. The specific growth and survival conditions are shown in Table 1 and Table 2.

[0022] d. Strain purifica...

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Abstract

The invention discloses a breeding method of a new halophilic crassostrea hongkongensis variety. The breeding method includes steps of a, selection of parents: utilizing wild crassostrea hongkongensis of sea areas with average salinity>=24ppt in a coastal region of South China as a halophilic parent group; b, promoting mature of the parents: utilizing the parent group in the step a as a basic group, and disposing the parent group to promote mature in sea water with 27-30ppt of salinity; c, breeding of offspring: utilizing the mature parent group in the step b as a breeding group, breeding the offspring in the sea water with 27-30ppt of salinity by a conventional method and obtaining a new halophilic variety F1; d, purely breeding the variety: utilizing the halophilic variety F1 in the step c as the parents, repeating b-c steps several times, and obtaining the new halophilic crassostrea hongkongensis variety via several generations of continuous pure breeding. The new halophilic crossostrea hongkongensis variety can be bred in the pure sea water, the convention that oysters can only be bred around estuary areas is finished, breeding area is enlarged by multiples, yield and output value are greatly improved.

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 high-salt-tolerant strain of Hong Kong oyster. 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., 2...

Claims

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Application Information

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IPC IPC(8): A01K61/00A01K61/54
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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