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Method for culturing seedlings of Portunus tritubereulatus in north and breeding Portunus tritubereulatus in south

The invention relates to a technology for swimming pool crabs three warts and three warts holding eggs, which is applied to the breeding field of swimming crabs in the north and south

Inactive Publication Date: 2010-07-21
GUANGDONG OCEAN UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

To make up for the shortage of Portunus trituberculatus commercial crabs in the market caused by the inability to breed Portunus trituberculatus from December to March of the next year in the north

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0009] (1) In mid-August, buy Portunus trituberculatus with oviposit eggs from the breeding farm of Portunus trituberculatus with early seedlings in the north (north of the Taiwan Strait).

[0010] (2) Transport the Portunus trituberculatus with water to the nursery and disinfect with 100 mg / L formaldehyde solution for 30 minutes. Incubation at 25°C, 30 salinity, dissolved oxygen above 5mg / L, and pH 7.5-8.5. The seedling density is 100,000-150,000 per cubic water body. In the daphnia stage, feed with algal powder, shrimp chips, yeast powder and rotifers, Z 4 In the later period, when megalopia is found, start to feed small artemia or crushed large artemia, and feed large artemia until the juvenile crabs come out of the pond. Through Daphnia and Megalopa, it is cultivated to the first or second stage of young crabs. The first-stage or second-stage juvenile crabs are the seedlings of Portunus trituberculatus.

[0011] (3) Within 10 hours, the portunus trituberculatus seedlin...

Embodiment 2

[0016] (1) In mid-August, buy Portunus trituberculatus with oviposit eggs from the breeding farm of Portunus trituberculatus with early seedlings in the north (north of the Taiwan Strait).

[0017] (2) Transport the Portunus trituberculatus with water to the nursery and disinfect with 100 mg / L formaldehyde solution for 30 minutes. Incubation at 28°C, 30 salinity, 4 mg / L or more dissolved oxygen, and pH 7.5-8.5. The seedling density is 80,000-100,000 per cubic water body. The larvae of daphnia were fed with microparticle bait and rotifers, Z 4 In the later period, when megalopia is found, start to feed small artemia or crushed large artemia and shrimp chips, and feed large artemia until the juvenile crabs come out of the pond. Through Daphnia and Megalopa, it is cultivated to the first or second stage of young crabs. The first-stage or second-stage juvenile crabs are the seedlings of Portunus trituberculatus.

[0018] (3) Within 10 hours, the portunus trituberculatus seedli...

Embodiment 3

[0023] (1) In mid-August, buy Portunus trituberculatus with oviposit eggs from the breeding farm of Portunus trituberculatus with early seedlings in the north (north of the Taiwan Strait).

[0024] (2) The seedling earthen pond is thoroughly cleared. The bottom mud of the pond can be washed with a high-pressure water gun and then dried in the pond. Before raising seedlings, use 100-mesh sieve silk to filter the water body, use 0.15‰~0.20‰ bleaching powder to clear the pond, and require the water body to cover the entire beach surface. Disinfect the water body for 48 hours, directly filter the incoming water to 70cm with a 100-mesh sieve, and use the residual bleaching powder to disinfect the water body. Cultivate plankton bait after entering the water.

[0025] (3) Lively transport the portunus trituberculatus with water to the earthen pond nursery, and disinfect the brood crabs with 100 mg / L formaldehyde solution for 30 minutes. Crab cages are suspended in the pond, and ea...

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PUM

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Abstract

The invention relates to a method for culturing seedlings of Portunus tritubereulatus in the north and breeding the Portunus tritubereulatus in the south, which comprises the following steps: obtaining brood Portunus tritubereulatus from a natural sea area in the north of the Taiwan Strait or a Portunus tritubereulatus culture pond from August to mid-October, then performing artificial breeding on the brood Portunus tritubereulatus or breeding the brood Portunus tritubereulatus in an earthen pond in the north to obtain juvenile Portunus tritubereulatus; and conveying the juvenile Portunus tritubereulatus serving as the seedlings of the Portunus tritubereulatus to the sea area at a low latitude in the south of the Taiwan Strait, and performing out-of-season breeding on the Portunus tritubereulatus. The Portunus tritubereulatus which is bred in the north can be bred in the south, so that the Portunus tritubereulatus appears on the market in the seasons when the Portunus tritubereulatus cannot be bred in the north from December to next March, and the out-of-season breading of the Portunus tritubereulatus is carried out by using the advantages that the temperature in the south at the low latitude is higher and the brood Portunus tritubereulatus exists in the northern autumn.

Description

technical field [0001] The invention belongs to the field of aquaculture, and in particular relates to a method for raising seedlings of portunus trituberculatus in the north and culturing them in the south. Background technique [0002] Portunus trituberculatus is an important economic marine crab species cultivated in large quantities in the waters north of the Taiwan Strait, and it is also the largest marine economic crab species cultivated in the world. But because it can't adapt to the high temperature above 35°C, all the Portunus trituberculatus cultures in low latitude areas in southern China fail because they can't survive the high temperature summer. However, because it cannot survive in water below 5°C (it can survive normally at 8°C, and can take bait at a temperature above 12°C), it can only be raised until the end of November in the north, and all fish must be caught. As a result, a large number of crabs can be caught and farmed crabs are on the market from Apr...

Claims

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Application Information

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IPC IPC(8): A01K61/00A23K1/18
CPCY02A40/81
Inventor 廖永岩
Owner GUANGDONG OCEAN UNIVERSITY
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