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Sea water domesticating method for Chinese sturgeon

A Chinese sturgeon and seawater technology, applied in climate change adaptation, fish farming, application, etc., can solve problems such as juvenile sturgeon injury, juvenile sturgeon stranded, etc., achieve high survival rate, short time, and restore resources

Inactive Publication Date: 2009-04-29
INST OF OCEANOLOGY - CHINESE ACAD OF SCI
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  • Summary
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AI Technical Summary

Problems solved by technology

At present, artificial breeding and release is only limited to the waters of the Yangtze River and the Yangtze River Estuary, and the production ships, nets and gill nets are very easy to cause damage to the juvenile sturgeon, and the ebb and flow of the estuary area will also cause the juvenile sturgeon to be stranded

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] On January 18, 2001, 150 Chinese sturgeon fry were transported from Wuchang to Qingdao, weighing 5.55-9.29g and body length 10.8-14.0cm. The aquaculture water is used after 20 hours of air filling with tap water. The water is changed 3 / 4 of the day and the water temperature is 8°C. Domestication began on February 3, and the salinity of aquaculture water increased by 5‰ every three days, and the salinity of aquaculture water reached 15‰ on February 11; it increased by 3‰ every five days, and the salinity reached 25‰ on February 27, after 15 days After domestication, it will increase by 1‰ every three days from March 15th, and it will safely transition to 32‰ of seawater on April 4th.

[0015] In addition, through experiments, in the process of seawater domestication, the salinity of aquaculture water can be increased by 3 to 5‰ every three days before 15‰; when the salinity is between 15 and 25‰, it can be increased by 1 to 3‰ every five days; When the water salinity is 25‰,...

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Abstract

The present invention relates to sea water domesticating culture of fishes, and is especially the process of sea water domesticating fresh water Chinese sturgeon fry for gradually transferring to sea water culture. During the domestication, the salt content of fresh water Chinese sturgeon fry raising water is gradually raised until culture in sea water with salt content of 3.2 %. The present invention is significant in protecting the rare fish variety of Chinese sturgeon and restoring Chinese sturgeon resource.

Description

Technical field [0001] The invention relates to the domestication and cultivation of fish in seawater, in particular to a process in which the freshwater fry of the river-sea migratory fish Chinese sturgeon is gradually transferred to the seawater culture after being domesticated in the seawater. Background technique [0002] The Chinese sturgeon is a relict species left over from the Cretaceous period about 200 million years ago. It is mainly distributed in the continental shelf waters of the East China Sea and the Yellow Sea and the mainstream of the Yangtze River. Chinese sturgeon is a river-sea migratory fish. It travels upstream to the Yangtze River estuary from June to August every year. It reaches the Hubei section of the river from September to October and stays in the river for the winter. It will spawn in the Yichang section of the river from October to November of the following year. Breed, immediately descend the river and return to the ocean for fattening after deliv...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A01K61/00
CPCY02A40/81
Inventor 肖志忠李军
Owner INST OF OCEANOLOGY - CHINESE ACAD OF SCI
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