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

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...