A method for ecological regulation of seawater cages using polyculture of wild Chinese single-horned pufferfish

A cage and polyculture technology, applied in application, fish farming, climate change adaptation, etc., can solve the problems of increasing the workload of farmers, difficult to treat with drugs, susceptible to diseases, etc., to improve feed utilization, ensure Normal growth, ensure the effect of net cleaning

Active Publication Date: 2018-05-22
GUANGDONG OCEAN UNIVERSITY
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, replacing and cleaning the net clothes requires a lot of work for the farmers. Moreover, every time the fish is replaced and cleaned, many fishes will be injured due to movement and friction. After the injury, they are very easy to be infected with diseases. The net cage is an open system, and it is very easy to Difficult to treat with medication
There will also be a certain degree of loss in production

Method used

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  • A method for ecological regulation of seawater cages using polyculture of wild Chinese single-horned pufferfish

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Embodiment 1

[0022] The present embodiment provides a kind of method that utilizes polyculture wild Chinese single horn fish to carry out the method for ecological regulation of seawater net cage water body, comprises the following steps:

[0023] S1. Selection: Select the wild Chinese single horned puffer in the surrounding area of ​​the polyculture cage, and select healthy individuals with a weight of 40-80 g / tail;

[0024] S2. Domestication: Put the selected wild Chinese single-horned fish into domesticated cages for domestication for two weeks or more. The domesticated cages and mixed cages are cages in the same sea area, and the algae on the nets of the domesticated cages The coverage rate is 20~30%, and the weak, abnormal and dead fish species are eliminated; the specification of domesticated cages is 3*3*4M;

[0025] S3. Polyculture: Put the wild Chinese single-horned fish selected from domestication in S2 into the cages with oval pomfret for polyculture. The stocking size of oval p...

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Abstract

The invention discloses a method for adjusting seawater net cage water body ecology through poly-culture of wild China Monacanthus chinensis. The method comprises steps that wild China Monacanthus chinensis and seawater main bred fish types are poly-cultured; casting density of the wild China Monacanthus chinensis is 5 to 10 fishes / m<3>; and coverage of v on the poly-culturing net cage during the cast is 10 to 20%. Wild China Monacanthus chinensis and seawater main bred fish types are poly-cultured and the two types have no food competition relationship; the wild China Monacanthus chinensis has no effect on normal growth of the seawater bred fish types and can also absorb alga attached to the net cloth during the cultivation of the net cage and residual baits or faeces of each day; net cage water quality decrease due to the alga, the residual baits and the faeces can be reduced, so healthy development of the seawater net cage ecological system can be stably and effectively maintained; and culture production can be normally conducted.

Description

technical field [0001] The invention relates to the field of ecological regulation of seawater net cages, in particular to a method for using polyculture of wild Chinese single-horned fish to regulate the ecology of seawater net cages. Background technique [0002] Seawater cage fish farming is an important farming model. Inside the cage is a small ecosystem. To maintain the stability of this small ecosystem is of great significance to the growth and survival of farmed fish. In the process of fish breeding, due to the residual bait and fish feces will fall to the nets, fall to the bottom of the sea through the meshes or be taken away by the flow of sea water, but as time goes on, the nutrients in the water body increase, and the cage nets A large amount of algae will grow epiphytically, and these algae will make the mesh of the net clothing smaller and smaller, and the residual bait and feces cannot flow out of the cage through water flow or gravity, and accumulate and deter...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A01K61/10A01K61/60
CPCA01K61/00Y02A40/81
Inventor 初庆柱陈刚张健东
Owner GUANGDONG OCEAN UNIVERSITY
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