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Open inflatable upwelling culture device for intermediate culture of bivalve mollusks and culture method thereof

A technology for bivalve molluscs and intermediate cultivation, applied in the field of open inflatable upwelling cultivation devices, can solve the problems of high power consumption, low survival rate of juvenile shellfish, waste of water resources, etc., to save seawater, save water resources and The effect of food resources and growth rate improvement

Pending Publication Date: 2019-01-11
INST OF OCEANOLOGY - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] For the problems existing in the prior art, the object of the present invention is to provide an open air-filled lifting system for the intermediate cultivation of bivalve molluscs, which saves water resources, reduces power consumption, and has fast growth of spat and high survival rate. The flow culture device is used for intermediate cultivation of spat of bivalve molluscs, and solves the problems of waste of water resources, high power consumption and low survival rate of spat in existing spat intermediate cultivation devices

Method used

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  • Open inflatable upwelling culture device for intermediate culture of bivalve mollusks and culture method thereof
  • Open inflatable upwelling culture device for intermediate culture of bivalve mollusks and culture method thereof
  • Open inflatable upwelling culture device for intermediate culture of bivalve mollusks and culture method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] Such as figure 2 Shown is an open inflatable upwelling cultivation device for the intermediate cultivation of bivalve seedlings, including a cultivation tube, a sieve, a nano-inflatable tube, and a floating ball, and the cultivation tube is the outermost layer of the entire device. The cultivation tube is split type, divided into upper part, middle part and lower part. The height ratio of the upper part and the middle part is 2:1, and the height of the middle part of the cultivation tube is at least 20cm. There is a layer of silk screen between the lower part and the middle part, and a layer of screen at the bottom of the lower part. Silk, the middle part of the two-layer sieve is the middle part, which is the cultivation area, and the material is plexiglass. The nano-inflatable tube is located at the upper end of the upper sieve, and the upper end of the cultivation tube is provided with a water outlet. There are 4 water outlets, and the floating ball is fixed near th...

Embodiment 2

[0040] The bivalve molluscs selected in this embodiment are hard clam spat, with an average shell length of 1000 μm, and the experimental conditions are: water temperature 23-27°C, salinity 30-33‰, pH value 7.6-7.8, and the unicellular algae bait is Golden algae, the cultivation density is 500,000 grains / device, place the bivalve spat that has completed metamorphosis on the filter at the bottom of the cultivation tube, place the device in the cultivation pool, make the water surface in the middle of the outlet of the device, and turn on the nano The inflatable tube is inflated.

[0041] The cultivation device used in the present embodiment is the same as in Example 1, and the specific parameters are: the number of sieved silk wood is 80 orders.

[0042] See Table 1 for the cultivation effect during the intermediate cultivation of hard shell clams.

[0043] Table 1 The culture effect of hard clam spat under different culture tube outer diameters

[0044]

[0045] It can be s...

Embodiment 3

[0047] The same part as in Example 2 will not be repeated, but the difference is that the bivalve molluscs selected in this example are oyster spat, with an average shell length of 800 μm.

[0048] See Table 2 for the culture effect during the intermediate culture of oyster spat.

[0049] Table 2 The culture effect of oyster spat under different culture tube outer diameters

[0050]

[0051] It can be seen from the culture effect in Table 2 that although the outer diameter of the culture tube will affect the survival rate of spat, it has reached more than 69% on the whole, saving 70% of water resources and 70% of bait, and the growth rate is 20% higher than that of traditional methods. -50% or more, and when the outer diameter of the cultivation tube is 400mm, the survival rate of spat can reach up to 95.1%. In summary, the cultivation device has the beneficial effects of improving the survival rate of spat and saving seawater and bait.

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Abstract

The invention provides an open inflatable upwelling culture device for intermediate culture of bivalve mollusks. The device includes a culture pipe, filter nets and an inflator, wherein the culture pipe is the outermost layer of the whole device, two ends of the culture pipe are opened, the filter nets are two layers, the culture pipe is divided by the filter nets into an upper portion, a middle portion and a lower portion, the middle between the two layers of filter nets is the middle portion and is the culture area, the inflator is arranged at an upper end of the upper filter net, an upper end of the culture pipe is provided with a water outlet, and a lower end of the culture pipe is provided with a water inlet. The culture device is advantaged in that through the culture method, water and electricity resources are greatly saved, the growth rate of juvenile mollusks is 20% to 50% higher than the traditional method, the survival rate is over 90%, and the seawater and the bait can be saved more than 70%.

Description

technical field [0001] The invention relates to the field of aquaculture, in particular to an open inflatable upwelling cultivation device and a cultivation method thereof for intermediate cultivation of bivalve seedlings. Background technique [0002] my country has a huge marine shellfish farming industry. Shellfish farming is an important part of the marine aquaculture industry, and its output accounts for 80% of my country's total marine aquaculture output. Common bivalve molluscs such as clams, oysters and scallops are delicious, nutritious and have important economic value. With the continuous development of artificial breeding technology, more attention has been paid to high-efficiency factory breeding methods, and shellfish breeding has become an important part of the mariculture industry. [0003] In the process of factory breeding of bivalve molluscs, the intermediate cultivation of juvenile shellfish is a key technology. Studies have shown that the survival rate...

Claims

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Application Information

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IPC IPC(8): A01K61/54A01K63/00A01K63/04B01D35/02
CPCB01D35/02A01K61/54A01K63/00A01K63/04A01K63/042A01K63/045Y02A40/81
Inventor 张涛于正林胡志周骢王晓龙杨美洁宋浩杨红生周毅张立斌
Owner INST OF OCEANOLOGY - CHINESE ACAD OF SCI
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