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Breeding method for metamorphosis development of portunus trituberculatus larvae

The invention relates to a technology for a swimming crab and a breeding method, which is applied to the breeding field of the metamorphosis of the larvae of the swimming crab, and can solve the problems of limiting the mass production of the swimming crab, unfavorable to the scale of the swimming crab, and not easy to ensure the uniform quality of the swimming crab, so as to reduce the probability of disease, The effect of promoting the simultaneous progress of metamorphosis and good sterilization effect

Inactive Publication Date: 2018-07-31
天津海升水产养殖有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Most of the current Portunus farming is carried out by farmers in their own ponds. This breeding method greatly limits the mass production of Portunus, and it is not easy to ensure the uniform quality of Portunus. These are not conducive to the production of Portunus as a whole. Scale, how to standardize all aspects of swimming crab farming and how to improve the scale of swimming crab farming has always been a problem in the field of swimming crab farming

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] Embodiment 1, a kind of cultivation method of portunus trituberculatus larva metamorphosis, comprises the following steps:

[0040] S1: Selection of parent crabs: Select parent crabs with a body weight of more than 250g, strong vitality, complete appendages, and intact egg masses. Gradually raise the temperature to promote good embryo development, and feed fresh shellfish and clam worms as bait for nutritional enhancement. , the water temperature does not exceed 23°C;

[0041] S2: Crab production in the breeding pond: place every two brood crabs at 15m 2 In the cultivation pool of the same place, carry out hanging cage to lay eggs, and this moment, water depth is 1m;

[0042] S3: Preparation of rotifer bait:

[0043] Preliminary cultivation of rotifers. The rotifers are preliminarily cultured in an outdoor soil pond, and feed on the spirulina cultivated in the pond. The temperature is controlled at 25°C and the salinity is 27;

[0044] Strengthening of rotifers: the ...

Embodiment 2

[0056] Embodiment 2, a kind of cultivation method of portunus trituberculatus larva metamorphosis, comprises the following steps:

[0057] S1: Selection of parent crabs: Select parent crabs with a body weight of more than 250g, strong vitality, complete appendages, and intact egg masses. Gradually raise the temperature to promote good embryo development, and feed fresh shellfish and clam worms as bait for nutritional enhancement. , the water temperature does not exceed 23°C;

[0058] S2: Crab production in the breeding pond: place every two brood crabs at a distance of 25m 2 In the cultivation pool of the same place, carry out hanging cage to lay eggs, and this moment, water height is 1m;

[0059] S3: Preparation of rotifer bait:

[0060] Preliminary cultivation of rotifers. The rotifers are preliminarily cultured in an outdoor soil pond, and feed on the spirulina cultivated in the pond. The temperature is controlled at 30°C and the salinity is 29;

[0061] Strengthening of...

Embodiment 3

[0073] Embodiment 3, a kind of cultivation method of portunus trituberculatus larva metamorphosis, comprises the following steps:

[0074] S1: Selection of parent crabs: Select parent crabs with a body weight of more than 250g, strong vitality, complete appendages, and intact egg masses. Gradually raise the temperature to promote good embryo development, and feed fresh shellfish and clam worms as bait for nutritional enhancement. , the water temperature does not exceed 23°C;

[0075] S2: Crab production in the breeding pond: place every two brood crabs at a distance of 20m 2 In the cultivation pool of the same place, carry out hanging cage to lay eggs, and this moment, water height is 1m;

[0076] S3: Preparation of rotifer bait:

[0077] Preliminary cultivation of rotifers. The rotifers are preliminarily cultured in an outdoor earthen pond, and feed on the spirulina cultivated in the pond. The temperature is controlled at 28°C and the salinity is 28°C;

[0078] Strengtheni...

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Abstract

The invention discloses a breeding method for metamorphosis development of portunus trituberculatus larvae. The key points of the technical scheme is that the breeding method comprises the following steps: S1, optimizing parent crabs; S2, culturing pond-produced crabs; S3, preparing rotifer baits: carrying out primary culture of rotifers and strengthening the rotifers; S4, preparing artemia salinabait: carrying out primary hatching of artemia salina, strengthening artemia salina larvae, and strengthening artemia salina adults; S5, carrying out nutrition strengthening of copepod baits; and S6,carrying out cultivation of zoea. Reasonable stage division of portunus trituberculatus in a zoea stage is achieved, the temperature of aquaculture water and the bait composition of the zoea are adjusted according to different developing stages, the whole-process large-scale breeding of the portunus trituberculatus in the zoea stage is successfully realized, and the zoea has a higher survival rate after the large-scale cultivation.

Description

technical field [0001] The invention relates to the technical field of marine product cultivation, in particular to a cultivation method for metamorphic development of Portunus trituberculatus larvae. Background technique [0002] Portunus trituberculatus, commonly known as swimming crab, gun crab, sea ​​crab , sea ​​crab , widely distributed in Liaoning, China Hebei , Tianjin , Shandong , Jiangsu, zhejiang , Fujian and other sea areas, generally from south to north, March to May and September to October are the peak production seasons. Liaodong half of Bohai Bay island From April to May, the output is more. Portunus trituberculatus is one of the most important export products in China. [0003] Existing can refer to the Chinese patent that publication number is CN106106285A, and it discloses a kind of pond natural ecological culture method of portunus. Including the setting of aquaculture ponds, the preliminary preparations for aquaculture, the placement of ...

Claims

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Application Information

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IPC IPC(8): A01K61/59A23K50/80
CPCA01K61/59A23K50/80Y02A40/81
Inventor 孙素慧吴键黄亚冬李永祥王冬浩魏翠任延军李卫东王金亮李天宝朱占营
Owner 天津海升水产养殖有限公司
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