Artificial seeding raising method for scylla paramamosain in small water body

A technology of burrowing mud crabs and water bodies, which is applied in the field of artificial breeding of mud crabs in small water bodies, can solve the problems of unsatisfactory industrial seedling raising technology, high requirements for seedling raising facilities, and high selling price, and achieves good application prospects and is easy to master , the effect of less investment

Inactive Publication Date: 2012-11-14
EAST CHINA SEA FISHERIES RES INST CHINESE ACAD OF FISHERY SCI
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AI Technical Summary

Problems solved by technology

However, industrial seedlings have high requirements for seedling facilities, and it is difficult to widely promote them among ordinary farmers. In addition, the cost of seedlings is relatively high, and the selling price of crab seedlings is several times higher than that of natural seedlings, which is difficult to be accepted by farmers.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] The highest water temperature in the cultivation tank is 32°C, the lowest water temperature is 28.2°C, the salinity of seawater is around 30‰, and the highest light intensity during the day is 22000Lux.

[0026] (1) Cultivation of zodiac larvae:

[0027] Stage I zoa larvae cultivation: Egg-bearing crabs hatch out stage I zoa larvae, use hand-drawn nets to catch 8,000-13,000 larvae with high vitality in the upper layer, and put them into a 100L cultivation bucket for cultivation. Put 2 air heads in the bucket, slightly inflate, add 1.5L single-cell algae in the exponential growth phase and 400mL rotifers every morning as the opening bait for the larvae, and change 2 / 3 the day before the metamorphosis into stage II flea-like larvae water;

[0028] Cultivation of stage II zoa larvae: slightly increase the air volume, change 2 / 3 of the water every day, and feed 450mL rotifers and 1.5L unicellular algae, and increase the wet weight by 10g the day before metamorphosis into s...

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Abstract

The invention relates to an artificial seeding raising method for scylla paramamosain in a small water body, which comprises the following steps: gradually increasing aeration quantity from the scylla paramamosain zoea cultivation phase and the megalopa cultivation phase to the young crab cultivation phase; collocating corresponding baits in each phase; from the day before differentiated II-phase zoea, changing the water every day, and adding algae to adjust water color, thus realizing the artificial seeding raising for scylla paramamosain in the small water body. The method has the advantages of low application requirements to the seeding raising, low investment, high efficiency, and easiness in understanding, can be quickly understood and handled by the farmers, is fit for artificial seeding raising in the inbred line breeding process, and has an excellent application prospect.

Description

technical field [0001] The invention belongs to the field of breeding mud crabs, in particular to a method for artificially raising seedlings of mud crabs in small water bodies. Background technique [0002] Scylla paramamosain belongs to Arthropoda, Crustacea, Decapoda, Portunidae, and Scylla. It is mainly distributed in the Yangtze River Estuary and beyond in my country. The south coastal waters are my country's important marine fishery resources and seawater cultured crabs. [0003] In recent years, the annual output of artificial breeding of blue crabs in my country has been stable at more than 100,000 tons, maintaining a stable development momentum. But, but so far, the seed of artificial cultivation also mainly comes from the natural seedling of sea area, is subjected to the restriction of sea area natural condition, and its quality and quantity all are difficult to obtain guarantee. The contradiction between the shortage of seedlings and the desire of fishermen to ex...

Claims

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Application Information

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IPC IPC(8): A01K61/00
CPCY02A40/81
Inventor 马洪雨马凌波乔振国马春艳
Owner EAST CHINA SEA FISHERIES RES INST CHINESE ACAD OF FISHERY SCI
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