Seed production method of black-shell pacific oyster new strain

A new line, long black shell technology, applied in fish farming, application, climate change adaptation, etc., to achieve the effects of stable genetic traits, high economic value, and improved meat yield

Active Publication Date: 2017-04-26
OCEAN UNIV OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In this patent, the selection method is to combine the melanin content of the outer shell and the mantle and breed it in two generations. However, the applicant also believes that the oyster growth environment and bait have a great influence on the characteristics and quality of the oyster. The genetic stability obtained by breeding has yet to be further confirmed

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Select 20,000 wild oysters from the Yellow Sea.

[0021] A seed production method of a new strain of black-shell long oyster, comprising the following steps:

[0022] a. Initial screening: From the wild long oyster population, initially screened out that both shells are black, and the mantle is black, the meat yield is high, and the group with regular shell shape is 2000 as the core group;

[0023] b. Secondary selection: take the core population of black-shelled long oysters selected in step a as the basic group, and use the truncation selection method to select 10% of the internal population of black shells, high meat yield, and long oysters with black mantles 200 individuals as the preferred group;

[0024] c. Self-propagation of the superior group: take the optimal group in the b step as the breeding group, carry out offspring cultivation according to the conventional shellfish seedling raising method, and obtain the new black shell strain F 1 ;

[0025] d. Secon...

Embodiment 2

[0028] Select 10,000 wild oysters from the Bohai Sea.

[0029] A seed production method of a new strain of black-shell long oyster, comprising the following steps:

[0030] a. Initial screening: From the wild long oyster population, initially screened out that both shells are black, and the mantle is black, the meat yield is high, and the group with regular shell shape is 1200 as the core group;

[0031] b. Secondary selection: take the core population of black-shelled long oysters selected in step a as the basic group, and use the truncation selection method to optimize 10% of the population's internal shells with black shells, high meat yield, and long oysters with black mantles 120 individuals as the preferred group;

[0032] c. Self-propagation of the superior group: take the optimal group in the b step as the breeding group, carry out offspring cultivation according to the conventional shellfish seedling raising method, and obtain the new black shell strain F 1 ;

[0033...

Embodiment 3

[0037] The new strains of black-shelled oysters obtained in Examples 1 and 2 were normally bred. After 10 months of age, some indicators were measured and compared with 10-month-old common oyster varieties, and some were bred normally.

[0038] 1. Shell height: randomly select 50 new strains of black-shelled long oysters obtained from seed production in Examples 1 and 2 of 10 months of age respectively, randomly select 50 common 10 months of long oyster varieties, measure and record, and use the result Can get, the long oyster shell height of embodiment 1 and 2 black-shell long oyster new strains is 10.6% higher than common long oyster on average.

[0039] 2. Body weight: same as above, carry out overall weight measurement, can get from the result, the overall weight of the long oyster of embodiment 1 and 2 black-shell long oyster new strains is 15.3% higher on average than common long oyster.

[0040] 3. Meat yield: the same as above, focus on taking out the soft oysters. Fro...

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PUM

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Abstract

The invention provides a seed production method of a black-shell pacific oyster new strain. The seed production method comprises the following steps: firstly, two preliminarily screened shells are black with black mantles and high rate of flesh in body, and a group with a regular shell shape is taken as a core population; pacific oyster individuals with black shells, high rate of flesh in body and black mantles are selected out as an optimal population by adopting a size selection method and carry out offspring cultivation according to a conventional shellfish breeding method as a reproductive population to obtain a black-shell new strain F1; through a family line breeding mode, the black shell character is further purified to form a second-generation breeding family line F2; and finally, through continuous purification of a plurality of generations, a new strain with stable characters is obtained. According to the seed production method, the black-shell pacific oyster new strain with stable genetic character can be obtained, and the mantle melanin and the rate of flesh in body of obtained oysters in the new strain are both greatly increased.

Description

technical field [0001] The invention relates to an oyster breeding method, in particular to a seed production method for cultivating a new variety of black-shell long oyster, and belongs to the field of aquaculture. Background technique [0002] Oyster is an important marine biological resource. Its meat is delicious and nutritious, and it is known as "milk in the sea". Oyster has a wide geographical distribution, fast growth, high yield, and high economic value. It is the economic shellfish with the widest breeding range and the highest yield in the world. As one of the four major cultured shellfish in my country, oyster occupies a very important position in my country's mariculture industry. In 2015, my country's oyster production reached 4.35 million tons, accounting for 33% of the national shellfish production and 25% of the national marine aquaculture production, ranking first in the world. It has made important contributions to ensuring my country's animal protein s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01K61/54
CPCY02A40/81
Inventor 于瑞海李琪孔令锋张景晓王许波张哲
Owner OCEAN UNIV OF CHINA
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