Method for breeding new golden-shell crassostrea gigas strain
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A technology of long oysters and new strains, applied in fish farming, application, climate change adaptation, etc., can solve problems such as reports on the cultivation methods of golden long oysters, achieve market sales price growth, accelerate the cultivation process, and have a broad market prospect
Active Publication Date: 2014-06-18
OCEAN UNIV OF CHINA
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Problems solved by technology
There is no report on the cultivation method of fast-growing golden long oyster during the selection and culture of long oyster
Method used
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Embodiment 1
[0024] A method for selecting and breeding new strains of oyster with golden shell, the operation steps of the first generation selecting and breeding are as follows:
[0025] A total of 120 female and male individuals with golden left shell color were selected from the wild population as breeding broodstock, of which 60 were male and female; one-to-one insemination and mating were carried out, and each breeding line was marked separately, and strict isolation measures were taken for larval cultivation , placed in the same sea area for intermediate cultivation and cultivation.
[0026] Specifically include the following steps:
[0027] A. Broodstock selection and maturation-promoting culture: Select 2-3 years old, shell height 10-15cm, and regular shell-shaped individuals from the wild population of oysters, and the individuals whose left shell color is golden are used as breeding broodstock; at the same time, the culture density It is controlled below 30 per cubic water body...
Embodiment 2
[0036] A method for selecting and breeding new strains of gold-shell oysters, the operation steps of the second-generation gold-shell selection are as follows:
[0037] (1) Screening of families: 60 families established from the first generation retained shell gold traits obviously, 46 families had no other color separation, and other families were discarded.
[0038] (2) Seed production: Among the 46 families screened out, the long oysters with golden shells on the left and right sides were selected for selfing within the family, one-to-one insemination and mating, each breeding line was marked separately, and strict isolation measures were taken to carry out larvae production. Cultivation, placed in the same sea area for intermediate cultivation and cultivation.
[0039] In this embodiment, the specific steps of the seed production process are the same as those in Embodiment 1.
[0040] The invention has the advantages of aggregating two important economic traits of sensory c...
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Abstract
The invention discloses a method for breeding a new golden-shell crassostrea gigas strain. The method is characterized by including the operating steps of (1) breeding the first generation: selecting wild parent crassostrea gigas with golden left shells, and creating a plurality of families without genetic relationships; (2) breeding the second generation: selecting the families with the obvious golden-shell characters from the created first-generation families, and screening out the crassostrea gigas with the golden left shells and the golden right shells to carry out inner-family inbreeding; (3) breeding the third generation: carrying out inter-family hybridization on the families, with the left shells and the right shells being in the golden characters, obtained from the created second-generation families; (4) breeding the fourth generation: carrying out stability verification on the families with the left shells and the right shells being in the golden characters. According to the method, the breeding process of the new crassostrea gigas shell-color strain is accelerated, and new products of bred shellfishes are increased; the product additional value is increased through the color characters, the breeding yield is improved through the growth characters, incomes of breeding enterprises and farmers are increased, and the market prospects are broad.
Description
technical field [0001] The invention relates to a technology of family selection breeding in shellfish genetic breeding, in particular to a method for selection and breeding of a new strain of oyster with golden shell. Background technique [0002] long oysters ( Crassostrea gigas ), also known as Pacific oyster, belongs to the phylum Molluscs, Phallobranches, Pearl Oysters, Oysteridae, and the genus Giant Oyster. It has two shells on the left and right, the right shell is small and flat, and the shell surface has water-like encircling scales, which are sparsely arranged. The left shell is the attachment surface, which is large and thick, irregular in shape, deep in the depression, and the scales are arranged closely. It uses the top of the shell to grow on rocks or artificial attachment bases. The inner surface of the shell is white, the adductor muscle scar is large, and the edge of the mantle is mostly black. [0003] Long oysters are tender and can be eaten fresh or d...
Claims
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