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Ecological crab seed breeding method for portunus pelagicus

A technology of Portunus pelagics and ecology, which is applied in chemical instruments and methods, climate change adaptation, water/sewage treatment, etc., can solve problems such as no breakthrough in technology and hinder the development of Portunus pelagics, and achieve the goal of avoiding the killing of larvae and improving the survival rate of seedlings Effect

Inactive Publication Date: 2020-12-22
YELLOW SEA FISHERIES RES INST CHINESE ACAD OF FISHERIES SCI
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Problems solved by technology

In Guangdong, Hainan, and Jiangsu, there are small-scale seedling success reports, and the survival rate of seedlings is about 3.24%-11.6%. However, in the northern coastal areas of my country, there is no breakthrough in related technologies due to the lack of Portunus pelagics, so there is no relevant report on seedling cultivation. Seriously hinder the development of Portunus pelagics farming industry in the north

Method used

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Embodiment Construction

[0018] Describe technical method of the present invention in detail below by embodiment:

[0019] A method for ecological breeding of portunus pelagics comprises: selection of parent crabs, indoor overwintering pool, overwintering of parent crabs, intensive cultivation of parent crabs, overwintering management, intensive cultivation of parent crabs, seedling cultivation, and management of seedling cultivation. The specific steps are as follows:

[0020] (1) Selection of parent crabs: Adopt the method of chicken head trapping, collect the mating female crabs of Portunus pelagics from the demonstration breeding pond of Portunus pelagics, and meet the following characteristics: complete appendages, smooth body surface, strong health and vitality, and weight ≥ 100g.

[0021] (2) Indoor wintering pool: use indoor cement pool (bottom area 30-40m 2 , height 1.0-1.2m) for wintering, lay 10-15cm of fine sand on the bottom of the wintering pond, leave 20% of the bottom area near the wat...

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Abstract

The invention relates to an ecological crab seed breeding method for portunus pelagicus, and belongs to the technical field of portunus seed breeding. The method comprises the steps of parent crab selection, indoor overwintering pond operation, parent crab overwintering, overwintering management, parent crab intensified breeding, crab seed breeding and crab seed breeding management. According to the method, artificially bred portunus pelagicus is selected, and indoor overwintering and intensified breeding are carried out, so that portunus pelagicus seed breeding is realized for the first timein northern China; the optimal water temperature for larva development is found out, adult fresh and alive bait of rotifers and fairy shrimps are fed, and the survival rate of crab seed breeding is increased to 16.5% and is increased by 40% or above compared with that of related reports; crab seed breeding water is regulated and controlled through zeolite powder and chlorella, and zero water change of crab seed breeding and green crab seed breeding are achieved; and in addition, zeolite powder achieves the effect of concealment, larva killing is avoided, and the crab seed breeding survival rate is effectively increased.

Description

technical field [0001] The invention belongs to the technical field of portunus seedling cultivation, and in particular relates to an ecological seedling cultivation method of portunus pelagics. Background technique [0002] Portunus pelagicus (Portunus pelagicus), also known as swimming crab, commonly known as flower crab, belongs to the phylum Arthropoda, the class Cmstacea, the family Portunidae, and the genus Portunus. It is a warm-water crab and is mainly used in my country. Distributed in coastal areas such as Zhejiang, Fujian, Taiwan, Guangdong, Guangxi and Hainan Island. Portunus pelagics are large in size, high in edible value, delicious in meat and rich in nutrition. They are one of the main seawater economic crabs in Hainan, Guangdong and Guangxi. In recent years, due to overfishing, the resources of Portunus pelagics are declining day by day. Portunus pelagics has the advantages of fast growth, less disease and high economic value. It is a new species of marine c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01K61/59C02F1/00C02F103/20
CPCA01K61/59C02F1/00C02F2103/20Y02A40/81
Inventor 高保全吕建建刘萍李健丁元春
Owner YELLOW SEA FISHERIES RES INST CHINESE ACAD OF FISHERIES SCI
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