Crab pot-based blue crab and green crab winter temporary culture method

Abstract

The invention relates to a crab pot-based blue crab and green crab winter temporary culture method. Temporary culture is performed based on a blue crab culture pond, and a circular groove is dug in the bottom of the blue crab culture pond 3-6 meters away from the pond wall and serves as an excrement and bait residue gathering place. The winter temporary culture method comprises the following stepsthat S1, blue crabs and green crabs with sound appendages and good vitality are selected; S2, two chela of each blue crab and green crab are firmly bound and are put in a crab pot; and S3, outlets formed in two ends of the crab pot are tightened, the crab pot is put in the extending direction of the circular groove, the first end of the crab pot is put at the bottom of the circular groove, and the second end of the crab pot is fixed to a peripheral platform of the blue crab culture pond for temporary culture. When the temperature is reduced in winter, the blue crabs and green crabs automatically migrate to the deep position of the circular groove. The rising height difference of the circular groove in an original blue crab culture pond and the crab pot from the circular groove to the peripheral platform is utilized. When the temperature is reduced, the blue crabs and green crabs in the crab pot automatically migrate to the deep position of the circular groove, and cold injury or bluecrab freezing death caused by cold waves is avoided. If a water body is lack of oxygen, the blue crabs and green crabs climb to the water surface position to supplement oxygen.

Description

Technical field [0001] The invention belongs to the technical field of blue crab breeding, and specifically relates to a winter temporary breeding method for blue crab cream based on a crab cage. Background technique [0002] Scylla paramamosain (Scylla paramamosain), commonly known as blue crab, is delicious and nutritious. It is a rare and economically valuable marine crab species in my country, and it is also the largest marine aquaculture crab in China. In recent years, the blue crab breeding industry in my country has developed rapidly. The blue crab breeding output is 158,000 tons and the output value is as high as 26 billion. It has become a pillar industry of agriculture in many places and has made a great contribution to increasing the income of farmers. [0003] Naturally, when the water temperature drops below 15°C in winter, the blue crabs will dig burrows for overwintering, making it impossible for farmers to harvest the blue crabs, causing the local blue crabs to be u...

AI Technical Summary

Problems solved by technology

However, the current method of temporary breeding of blue crabs is generally to place blue crabs in cement ponds for temporary breeding management, usually only suitable for about one month of temporary breeding, and the survival rate will decrease over time, and even cannot be temporarily raised until the eve of the Spring Festival

Other methods, such as using breeding cages, crab apartments, crab boxes, etc., are greatly limited by the temporary breeding site, the breeding area is limited, the temporary raising cost is high, or there is a disadvantage of poor resistance to sudden weather changes, the survival rate Difficult to guarantee

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