Artificial breeding method of Mactra chinensis

An artificial and clam technology, applied in the field of marine biology, can solve problems such as artificial breeding of clams that have not yet been seen

Inactive Publication Date: 2009-05-20
DALIAN FISHERIES UNIVERSITY
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Problems solved by technology

Scholars have successively completed the artificial study of common tidal flat shellfish such as Philippine clam (Yan Xiwu, 2002-2005), four-cornered clam (Yan Xiwu, 2008), thin mirr

Method used

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Examples

Experimental program
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Effect test

Embodiment 1

[0023] The first step, parent selection: In late March 2008, 100 kg of 3-year-old healthy Chinese clams were selected from the wild population in the Jianshan tidal flat of Zhuanghe, Dalian, with no damage to the shell and strong vitality.

[0024] The second step, parents to promote ripening: at the beginning of April 2008, in the seedling room of Dalian Hailiang Aquatic Food Co., Ltd., place 30kg of Chinese clam parents for 60m 3 In the cement pond, the parental ripening method was promoted by increasing the temperature; during the period, the indoor water temperature was 8°C, and the temperature was raised by 0.5°C every day until the constant temperature cultivation started at 20°C, and the cultivation was carried out for 60 days. During this period, the parents will die as the temperature rises, and the mortality rate is about 40-60%. At the same time, pick out the dead shellfish in time to avoid water quality deterioration; the parents that finally adapt to the environmen...

Embodiment 2

[0031] The first step, parent selection: At the end of March 2008, 100kg of 3-year-old healthy Chinese clams were selected from the wild population in the Jianshan tidal flat of Zhuanghe, Dalian, with no damage to the shell and strong vitality.

[0032] The second step, parental ripening promotion: at the beginning of April 2008, adopt the ecological ripening promotion method, put 40Kg of parents in scallop cages in the shrimp pond for parental ripening promotion, each scallop cage has 10 floors, and each scallop cage temporarily raises parental clams 5Kg. The outdoor temperature is natural water, which gradually rises from 4°C to 22°C, for a total of 90 days of cultivation. During this period, samples were taken regularly to observe the gonad development, and the gonads were matured. During this period, the parents will die as the temperature rises, and the mortality rate is about 40-60%. At the same time, pick out the dead shellfish in time to avoid water quality deteriorat...

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Abstract

The invention relates to the technical field of the breeding of shellfish seedlings, in particular to an artificial breeding method for Mactra chinensis. Through the combination of artificial ripening and ecological ripening of parents, the development of sex glands is regularly detected to determine the mature period of the sex glands of the parents; methods such as shade drying, water flowing and so on, are adopted to stimulate the spawning and spermiation of the parents to obtain fertilized eggs, and D larvae are obtained through the embryonic development; and on this basis, larva breeding, larva metamorphosis and juvenile shellfish cultivation are performed. A large amount of Mactra chinensis seedlings can be obtained through the links. The method breaks through an artificial breeding technology of the Mactra chinensis, solves the problem of the breeding of the Mactra chinensis seedlings that fails to be broken through for a long time, and lays a solid foundation for the development of cultivation and proliferation of native species, the resource recovery of shallow seas and tidal-flat areas, and the maintenance of biological diversity. The method has the characteristics of simple and convenient operation and high practicality.

Description

technical field [0001] The invention relates to marine biological technology, and belongs to the technical field of shellfish seed breeding, in particular to an artificial seedling raising method of Chinese clams. Background technique [0002] Chinese clams belong to the clam branch class, clam order. clam family, clam genus, mainly distributed in Liaoning, Shandong, Japan, Korea and other places in my country (Zhang Xi, 1961). Chinese clams live in the shallow sea near the estuary where the water flow is smooth and the bait is abundant. The water depth of 2-5m is the most, and it is distributed in the sea area with a water depth of 60m. The meat is delicious and the meat yield is high. It is a high nutritional value. Mudflat shellfish. Some areas in northern my country have carried out increased breeding, but in the process of increasing clam breeding in China, the lack of seedlings has become an urgent problem to be solved, which seriously hinders the development of this ...

Claims

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Application Information

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IPC IPC(8): A01K61/00
CPCY02A40/81
Inventor 闫喜武王琦张跃环霍忠明赵越杨凤张国范
Owner DALIAN FISHERIES UNIVERSITY
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