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Breeding method of a new strain of pure white shell long oyster

A breeding method and technology of new strains, applied in the field of seed production of new breeds of pure white oysters with long shells, can solve problems such as genetic traits that need further research, achieve white appearance, high commodity value, and great prospects for popularization and breeding

Active Publication Date: 2019-04-30
OCEAN UNIV OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In this breeding, the shell color is white, and considering the color of the mantle, oyster individuals with less melanin content are selected as much as possible. However, whether the genetic traits obtained through only two generations of breeding can be stable needs further research

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] Select 20,000 wild oysters from the Yellow Sea.

[0019] A method for cultivating new strains of pure white-shell long oysters, comprising the following steps:

[0020] a, initial screening: first from the wild long oyster population, preliminarily screen out two shells that are all white, and the shell type is fan-shaped, and the group with high meat yield is 2000 as the core group, and grow after seedlings are carried out according to the single oyster method;

[0021] B, secondary selection: with the selected double shells in step a being white as the core population as the basic population, use the truncation selection method to optimize 10% of the double shells inside the population to be pure white, with milky white mantle and fast growth rate , 200 of the white shell taxa with a higher meat yield are selected as the preferred group;

[0022] c. Self-propagation of the superior group and one-to-one fertilization and mating: use the preferred group in the b step a...

Embodiment 2

[0026] Select 10,000 wild oysters from the Bohai Sea.

[0027] A method for cultivating new strains of pure white-shell long oysters, comprising the following steps:

[0028] a, initial screening: first from the wild long oyster population, preliminarily screen out two shells that are all white, and the shell type is fan-shaped, and the group with high meat yield is 1200 as the core group, and grows after seedlings are carried out according to the single oyster method;

[0029] B, secondary selection: with the selected double shells in step a being white as the core population as the basic population, use the truncation selection method to optimize 10% of the double shells inside the population to be pure white, with milky white mantle and fast growth rate , 120 groups of white shells with higher meat yield were selected as the preferred groups;

[0030] c. Self-propagation of the superior group and one-to-one fertilization and mating: use the preferred group in the b step as...

Embodiment 3

[0034] 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.

[0035] 1. Shell height: randomly select 50 new strains of pure white shell 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, by As a result, the long oyster shell height of the new strains of pure white shell oysters in Examples 1 and 2 is 10.89% higher than that of common long oysters on average.

[0036] 2. Body weight: the same as above, carry out the whole weight measurement, can get from the result, the overall weight of the long oyster of embodiment 1 and 2 pure white shell long oyster new line is 15.80% higher than common long oyster on average.

[0037] 3. Meat yield: same as above, the soft part of the oyste...

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Abstract

The invention provides a cultivation method for a new strain of pure white shell pacific oysters. The cultivation method includes the steps that a class group which has two white and fan-shaped shells and is high in meat yield is preliminarily screened to serve as core groups; 10% of white shell class group is optimized from the group through a head cutting selection method, wherein the white shell class group has double pure white and fan-shaped shells and a creamy white pallium, grows fast and is high in meat yield, and the white shell class group serves as an optimized class group and a propagation group to obtain the new strain F1 with the pure white shells; by means of the family selection mode, the pure white shell character is further purified to form a second generation selection family F2; finally the new strain with stable characters is obtained through continuous purification of multiple generations. The strain of the pure white shell pacific oysters has the advantages of stable inheritance, the high meat yield, high commodity value and huge cultivation and popularization prospects, and the appearance is as white as polished jade.

Description

technical field [0001] The invention relates to an oyster breeding method, in particular to a seed production method suitable for cultivating a new variety of pure white-shell long oyster, belonging 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 mariculture production, ranking first in the world. It has made important contributions to ensuring my country's animal protei...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A01K61/54
CPCY02A40/81
Inventor 于瑞海李琪郑小东张景晓王许波李玲蔚
Owner OCEAN UNIV OF CHINA
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