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Breeding method of a new strain of cup-shaped long oyster

A breeding method and technology of long oyster, which is applied in the field of seed production of new strains of long oyster, can solve the problems of lack of new oyster varieties, lack of shell shape rules, etc., and achieve the effect of cup appearance, high commodity value and high commodity value

Active Publication Date: 2020-09-01
OCEAN UNIV OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to solve the problem of lack of new varieties of oysters in my country, especially the lack of oyster strains with regular shell shapes and deep oyster cups, the purpose of the present invention is to provide a method for cultivating new strains of long oysters with shell-shaped cup shapes, and to breed good quality, shell-shaped oysters. New varieties of oysters with beautiful appearance to meet market demand, used to improve the quality and appearance of cultured oysters, to make up for the shortcomings of existing technologies

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Select 20,000 wild oysters from the Yellow Sea.

[0022] a. Initial screening: From the wild and cultured long oyster populations, preliminarily screen out the shell-shaped cup type, the depth of the oyster cup is more than 3cm, and the group with a high meat yield will be used as the core group, and then cultivated after self-propagation;

[0023] B, secondary optimization: with the selected shell-shaped cup type in step a, oyster cup depth more than 3cm, plump core group as the basic group, adopt the truncation selection method to optimize 10% of the shell-shaped cup type in the group, The long oyster group with a depth of more than 3cm, fast growth and high meat yield is the preferred group;

[0024] c. Self-propagation of superior groups and one-to-one fertilization and mating: use the optimal group in step b as the breeding group, and carry out offspring cultivation according to the conventional method of artificial breeding of oysters to obtain a shell-shaped cup ...

Embodiment 2

[0028] 20,000 long oysters were cultured in the Bohai Sea.

[0029] a. Initial screening: From the wild and cultured long oyster populations, preliminarily screen the shell-shaped cup type, the depth of the oyster cup is more than 3cm, and the group with a high meat yield will be used as the core group, and then cultivated after self-propagation;

[0030] B, secondary optimization: with the selected shell-shaped cup type in step a, oyster cup depth more than 3cm, plump core group as the basic group, adopt the truncation selection method to optimize 10% of the shell-shaped cup type in the group, The long oyster group with a depth of more than 3cm, fast growth and high meat yield is the preferred group;

[0031] c. Self-propagation of the superior group and one-to-one fertilization and mating: use the optimal group in step b as the breeding group, and carry out offspring cultivation according to the conventional artificial breeding method of oysters to obtain a shell-shaped cup ...

Embodiment 3

[0035] The new cup-shaped oyster strains 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.

[0036] 1. Shell width: randomly select 50 cup-shaped long oyster new strains obtained from seed production in Examples 1 and 2 of the age of 10 months respectively, randomly select 50 common long oyster varieties of the age of 10 months, measure and record, and obtain the result by It can be obtained that the long oyster shell length of embodiment 1 and 2 cup type long oyster new strains is 20-25% higher than that of common long oyster on average.

[0037] 2. Meat yield: the same as above, the oyster soft body is taken out, and the result can be obtained that the weight of the long oyster soft body of the new strain of the cup type long oyster in embodiment 1 and 2 is 30-40% higher than the common long oyster on average.

[0038] Examples 1 and 2 cul...

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Abstract

The invention provides a cup-shaped long oyster new strain cultivation method. The method comprises the steps that a group of which the shell shape is cup-shaped, the oyster cup depth is more than 3 cm, and the meat yield rate is high is selected as a core group; 10%of long oyster groups of the core group of which the shell shape is cup-shaped, the oyster cup depth is more than 3 cm, and the meatyield rate is high are selected through a truncating selection method as a preferred group and a breeding group to obtain a cup-shaped long oyster new strain F1; a character that the shell shape is cup-shaped is further purified to form a second-generation breeding family strain F2 through a family strain breeding method; finally, a new strain with stable characters is obtained through successivepurification of a number of generations. The cup-shaped long oyster strain cultivated by the method has the advantages of stable inheritance, high meat yield, extremely high commercial value and the like, and a huge prospect of popularization and breeding.

Description

technical field [0001] The invention relates to a method for breeding oysters, in particular to a seed production method suitable for cultivating new strains of long oysters with cup-shaped shells, and belongs to the field of aquaculture. Background technique [0002] Oysters are one of the most recognized marine treasures in the world and the largest cultured shellfish in my country. In 2016, my country’s oyster output was 4.83 million tons, accounting for more than 35% of my country’s total shellfish output and 85% of the world’s total oyster output , ranking first in the world. However, there has been a lack of systematic and effective breeding work for long oysters since artificial breeding. The parents used for breeding are all wild-type populations that have never been genetically improved, especially the genetic background and quality of most breeding broodstock in nursery farms. It often leads to the reduction of genetic diversity and the degradation of germplasm. I...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A01K61/54
CPCA01K61/54Y02A40/81
Inventor 于瑞海李琪
Owner OCEAN UNIV OF CHINA
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