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Cultivation method for preventing oysters from being suffocated

A culture method and technology for oysters, which are applied in fish farming, application, climate change adaptation, etc., can solve the problems that oyster seedlings cannot meet the requirements of aquaculture on quantity and quality, and the technology of oyster semi-artificial seedlings is backward.

Inactive Publication Date: 2015-05-06
GUANGXI ZHENGWU MARINE IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, oyster seedlings mainly rely on artificial harvesting of seedlings in natural sea areas. Various attachment substrates are placed in high-yield seedling areas in natural sea areas to make oyster seedlings adhere and fix. Breeding in breeding areas, because the technology of oyster artificial breeding has not yet been perfected, and the technology of oyster semi-manual seedling harvesting is backward, the supply of oyster seedlings cannot meet the demand for quantity and quality of farming

Method used

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Examples

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Effect test

Embodiment 1

[0012] On September 18, 2010, 3,000 kilograms of oyster larvae were released in Beibu Gulf near the northwest sea area of ​​Hepu County. A total of 500 rafts were used. The seawater temperature was 28°C and the salinity was 20‰. The breeding season begins in June of the third year. During this period, the seawater temperature and salinity are regularly checked every week. When the seawater temperature rises to 29°C, the salinity rises from 20‰ to 22‰. The attached oysters were transferred to the estuary of the Nanliu River in Hepu. It was tested that the seawater temperature was 27°C and the salinity was 15‰. They were cultured under these conditions until October. During the entire breeding period, the average seawater temperature was 26°C and the average salinity was 15‰. According to statistics, as of December 2013, during the breeding period of oysters, due to the inconsistency of seawater temperature and salinity conditions, the sperm and eggs are difficult to discharge, ...

Embodiment 2

[0014] In July 2011, 3,000 kilograms of oyster larvae were released in Beibu Gulf near the northwest sea area of ​​Hepu County. A total of 500 hanging rafts were used. The seawater temperature was 30°C and the salinity was 22‰. During the period, due to continuous days of heavy rain, the seawater temperature dropped to 21°C and the seawater salinity dropped to 5‰. Therefore, the oysters attached to the hanging strings were transferred to the deep sea area far away from the river estuary in time. After testing, the seawater temperature was 25°C at that time. , the salinity is 9‰, continue to breed under this condition, until July of the next year, when it enters the breeding season, during the whole breeding period, the average seawater temperature is 28°C, and the average salinity is 12‰. According to statistics, as of December 2013, the survival rate of oysters during the breeding period has reached more than 90%. Due to the inconsistency of seawater temperature and salinity c...

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Abstract

The method discloses a cultivation method for preventing oysters from being suffocated. The method mainly comprises three main steps of site selection, hanging raft cultivation and water quality monitoring. The traditional cultivation method comprises the following steps that substrates are put in the seawater, oysters are adhered and fixed on the substrates for cultivation; the oysters cannot move; when the seawater conditions, such as seawater temperature and salinity, are changed and the oysters are in breeding season, the oysters are dead due to the fact that the oysters cannot discharge sperms and eggs caused by environment change. According to the cultivation method for preventing the oysters from being suffocated, the oysters are cultivated by means of being adhered to hanging strings, and a fixed cultivation mode is changed into a movable cultivation mode, so that the oysters can be transferred and cultivated in the environment with appropriate seawater temperature and salinity, and the death rate, caused by the fact that the oysters cannot discharge sperms and eggs, is reduced in the oyster cultivation process. By employment of the method, disclosed by the invention, for cultivating oysters, the oyster death rate is reduced to 20% from 60%. The cultivation method for preventing the oysters from being suffocated has the advantages that the high-efficient and healthy development of oyster cultivation industry is promoted, and the economic benefit of the oyster cultivation industry can be increased.

Description

technical field [0001] The invention relates to a breeding method for preventing oysters from suffocating, and belongs to the technical field of marine aquaculture. Background technique [0002] Omi oyster (Crassostrea rivularis), a genus of the Oyster family, is a bivalve mollusc, commonly known as oyster, which belongs to warm shellfish, and is distributed in Japan and my country along the Pacific coast. Near River oysters are named for their most prosperous growth in river estuaries, and generally grow in the shallow sea of ​​the inner bay where the river and the sea meet. Due to the limitation of suitable growth conditions, its quantity is less than other varieties, so its economic value is higher. It is an important economically cultivated shellfish in southern my country, and it is an export variety with advantages and promising market prospects. [0003] Oysters are sessile shellfish, generally fixed to shallow sea objects or seaside reefs, and open and close shells...

Claims

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Application Information

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IPC IPC(8): A01K61/00
CPCY02A40/81A01K61/59
Inventor 霍波上官云山
Owner GUANGXI ZHENGWU MARINE IND
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