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A low-latitude out-of-season seeding and culturing method for portunus trituberculatus

A technology of Portunus trituratus, low latitude, applied in fish farming, application, climate change adaptation, etc.

Inactive Publication Date: 2010-06-30
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

[0008] (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).

[0009] (2) Wrap the Portunus trituberculatus with soft plastic, tie them up, and oxygenate them, and within 10 hours, transport them live by plane with water to the southern low-latitude nursery ground south of the Taiwan Strait.

[0010] (3) Disinfect with 100 mg / L formaldehyde solution for 30 minutes in the southern low-latitude nursery field. Incubation at 29°C, 30 salinity, more than 5mg / L dissolved oxygen, 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 cultiva...

Embodiment 2

[0015] (1) In mid-August, portunus trituberculatus was purchased from wild fishermen in the north (north of the Taiwan Strait).

[0016] (2) Wrap the Portunus trituberculatus with soft plastic, tie them up, and oxygenate them, and within 10 hours, transport them live by plane with water to the southern low-latitude nursery ground south of the Taiwan Strait.

[0017] (3) Disinfect with 100 mg / L formaldehyde solution for 30 minutes in the southern low-latitude nursery field. Incubation at 28°C, 30 salinity, 4 mg / L or more dissolved oxygen, 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-st...

Embodiment 3

[0022] (1) In mid-September, purchase Portunus trituberculatus with oviposit eggs from the breeding farm of Portunus trituberculatus with early seedlings in the north (north of the Taiwan Strait).

[0023] (2) Wrap the Portunus trituberculatus with soft plastic, tie them up, and oxygenate them, and within 10 hours, transport them live by plane with water to the southern low-latitude nursery ground south of the Taiwan Strait.

[0024] (3) Disinfect with 100 mg / L formaldehyde solution for 30 minutes in the southern low-latitude nursery field. Incubation at 27°C, 30 salinity, more than 5mg / L dissolved oxygen, 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...

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Abstract

The invention relates to a low-latitude out-of-season seeding and culturing method for portunus trituberculatus, which includes the following steps of getting incubation portunus trituberculatus from the natural waters or portunus trituberculatus ponds in the north of Taiwan Strait in August to mid-October; transferring the incubation portunus trituberculatus to low-latitude seas in the south (south of the Taiwan Strait) for artificially breeding or breeding in earth ponds to obtain the juvenile portunus trituberculatus. The juvenile portunus trituberculatus is used as seed to breed the portunus trituberculatus for out-of-season culturing. Therefore the portunus trituberculatus from the north can be cultured in the south. During the season from December to March in the next year when portunus trituberculatus can not be cultured in the North, the portunus trituberculatus can be bought in market. The invention utilizesthe advantages of low latitude and higher temperature in the south and the advantages of available portunus trituberculatus in autumn in the north to conduct out-of-season seeding and culturing of the portunus trituberculatus.

Description

technical field [0001] The invention belongs to the field of aquaculture, and in particular relates to a low-latitude off-season nursery and culture method for Portunus trituberculatus. 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 ℃, all portunus trituberculatus cultures that are carried out in the southern low-latitude area all 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 April to N...

Claims

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Application Information

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