KR101009292B1 - Incubator for spawn of swimming crab - Google Patents

Abstract

PURPOSE: An incubator for spawn of blue crab is provided, which is capable of incubating blue crab in a desired time. CONSTITUTION: An incubator for spawn of blue crab comprises: a container(12) in which a cylindrical neck part(13) is formed in the top and which is comprised of a body having an internal space of the fixed volume; a water supplying pipe(18) in which water is provided from the upper end of the neck part of the container; and an exhaust pipe(22) which is integrally formed in the side of the neck part of the container and through which water is exhausted.

Description

Blue Crab Incubator {Incubator for spawn of Swimming Crab}

The present invention relates to an incubator for hatching eggs (egg) of the blue crab, and more particularly, to separate the eggs of the crab separately and incubate artificially using an egg incubator to produce seedlings (cub crab) throughout the year. It is about.

Blue crabs are crustaceans of the deciduous crab family. It can swim and move, and it is nocturnal and hides in the shallow sand of 20-30 meters of beach during the day and eats at night. The shell is about 8.5cm in size, the width of the shell is about 17.5cm, rhombic, and there are five legs on each side. The distribution area is the west and south seas of Korea, and Japan and China. In winter, they hibernate to deep or distant seas, and from late March, they migrate to shallow areas or to bays for spawning. The spawning season is from June to August.

Since 2003, in order to increase the crab resources and increase the income of fishers, domestically produced and released seedlings of blue crabs. However, if the mother dies during the production of the crab seedlings, the eggs do not hatch, so a large amount of live mother crabs are required to secure a lot of effort and budget. When an immature mother crab is artificially matured, if the mother dies, it dies like a difficulty. Therefore, it is important to ensure that the mother does not die because the new mother must be matured to acquire new mothers. In addition, there must be a heating system for maturity of mothers and eggs due to the limited time and place for seedling production of blue crabs. In order to hatch a year-round system is required.

In view of the above circumstances, an object of the present invention is to provide a crab egg incubator for producing seedlings without a crab mother.

It is another object of the present invention to incubate immature eggs from the crab mother and then to hatch the crabs throughout the year at desired times and to control and release and collect hatched larvae at a desired time in the crab egg incubator.

In addition, another object of the present invention is to secure and increase the resources of not only blue crabs, but also all crustaceans.

The present invention, in order to achieve the above object, a cylindrical neck is formed on the top of the container consisting of a body having a constant volume of internal space; A water supply pipe through which the aquaculture water is supplied from the upper end of the neck of the container; A crab formed integrally with the neck side of the container to discharge the aquaculture water filled to the neck; hatching the crab eggs in the container, and the crab larva hatched from the container to be discharged to the outside through the discharge pipe. It is characterized by the provision of an incubator.

The present invention does not require a large amount of mothers for the production of blue crab seedlings, so that the cost of farming can be greatly reduced, and the production of shellfish seedlings can be produced regardless of the hatching time and place by controlling the environment in the incubator. Therefore, it adds high value to the industrialization of crustacean aquaculture, and makes it possible to raise the income of fishers by short-term crab farming by utilizing spaces such as waste salt and shrimp farms. This will contribute to the distribution and price stabilization of the fisheries industry.

1 is a schematic view showing a crab egg incubator according to the present invention.
Figure 2 is a plan view showing a crab egg incubator according to the present invention.
Figure 3 is a side view showing a crab egg incubator according to the present invention.
Figure 4 is a plan view showing to explain the migration path of the larva hatched from the crab egg according to the present invention.
5 is a photograph showing the installation state of the crab egg incubator of the present invention.
Figure 6 is a photograph showing the crab egg incubator of the present invention.
Figure 7 is a photograph showing a larvae collecting the hatched larvae of the present invention.
8 is a photograph showing a valve for adjusting the quantity of aquaculture water of the present invention.

Hereinafter, a crab egg incubator according to the present invention will be described in detail with reference to the accompanying drawings.

First, the present invention is to set the environment, such as the water temperature or quantity of aquaculture water for hatching of eggs as an egg incubator capable of mass-producing seedlings of blue crab, and to control the incubation time, and the transfer and collection of hatched larvae It is possible.

The incubator 10 includes a container 12 formed of a body 14 having a cylindrical neck 13 formed thereon and having a constant volume of internal space. The container 12 may be manufactured in various shapes and shapes, such as glass or synthetic resin. That is, it may be a polygonal column, a polyhedron, or a sphere.

A water supply pipe 18 to which aquaculture water for hatching a crab egg is supplied is connected to an upper end of the neck 13 integrally formed on the container 12. The water pipe 18 is installed near the bottom of the container 12, and the stopper 20 is coupled to the upper end of the neck 13 through which the water pipe 18 passes.

And the water supply pipe 18 connected to the container 12 is equipped with a control valve 19 to adjust the amount of water for aquaculture.

In addition, the discharge pipe 22 is integrally connected to the neck 13 side of the container 12. The discharge pipe 22 is to discharge the aquaculture water filled up to the neck 13 of the container 12 to the outside.

Therefore, blue crab eggs are hatched in the container 12, and blue crab larvae hatched in the container 12 are to be discharged to the outside through the discharge pipe 22 while swimming in the container (12).

The hatching time of the eggs is controlled by adjusting the water temperature of the aquaculture water, the salt concentration of chlorine or the yield of the aquaculture water as conditions for hatching of the eggs. And the water temperature of aquaculture water can be controlled within 7 ~ 35 ℃ to control the incubation time. In addition, the salt concentration of chlorine is set to about 15 ~ 20 ‰ environment, the number of water is 12 ~ 16ℓ per minute, the appropriate amount can be adjusted by setting the environment within about 14L per minute, hatching time can be adjusted.

On the other hand, the crab egg incubator of the present invention is connected to the main water supply pipe 16 for supplying aquaculture water to the water pipe 18 connected to each of the plurality of containers (12). That is, the water pipes 18 connected to the inside of the ten vessels 12 are connected to the main water pipes 16, respectively, and the water pipes 18 are each equipped with a control valve 19 for controlling the quantity of aquaculture water. .

And the larval larvae passage 24 is provided to transfer the larvae discharged through each discharge pipe 22 of the plurality of vessels 12 installed. That is, the discharge pipe 22 connected to the ten vessels 12 and the neck 13 is directed toward the larval flow passage 24 so that the larvae hatched in the container 12 float in the filler metal 12 through the discharge pipe 22. After discharged, the larvae are housed in the larva passage 24. In addition, the larvae to transfer the larvae transported through the discharge hole 25 formed on one side of the larvae passage 24 to the larvae collection (28) equipped with the strainer 29 below the larvae passage 24. The pipe 26 is connected. The larva flow passage 24 and the larval transfer pipe 26 may be formed at a predetermined inclination angle for the flow of aquaculture water and the larvae collection and collection of larvae.

The incubator of the present invention was produced in a set of 10 with a diameter of about 30cm, install the incubator on a rectangular synthetic resin flat plate of 1.9m in length and 1.9m in width, the incubator is a water supply pipe and discharge pipe equipped with a main water supply pipe and a control valve Connect and install each, install the larval collection passage under the discharge pipe, the larval transfer pipe connected to the discharge hole is installed under the larval collection passage. Under the end of the larvae, a larvae with a strainer is placed.

The crab egg incubator of the present invention made as described above is incised and collected from about five to seven crab eggs from the nested mother crab and placed in the container 12 to continuously supply cultured water through the water pipe 18. Aquaculture water is supplied to the container 12 to make direct contact with the eggs so that the eggs can spawn. Incubation time and amount can be determined by setting the environment such as water temperature, salinity and chlorine content. The hatching condition is preferably applied to the results obtained through many tests.

The larvae that are spawned and hatched in the vessel 12 according to the hatching conditions are suspended according to the flow of aquaculture water, and then reach the neck 13 of the vessel 12 and are discharged to the larval collection passage 24 through the discharge pipe 22. do. The larvae discharged together with the aquaculture water in the larvae collecting passage 24 are transported along the larvae collecting passage 24 and finally along the larval conveying pipes 26 connected to the discharge holes 25 of the larvae collecting passage 24. It is transported to the collecting cabinet 28. The larvae collection 28 is provided with a sieve (29) to filter only the larvae and let the aquaculture water pass.

Therefore, the present invention can produce a large amount of seedlings by hatching the larvae with only abundant eggs without a mother, unlike the conventional orthodoxy that there must be a living mother for the production of blue crab seedlings. In addition, it is possible to control the incubation time and amount of eggs by adjusting the water temperature of aquaculture water, and to move the entire incubator to produce crab seedlings over four seasons. In addition, since the seedling production method of harvesting and stocking only the larvae and breeding away from the seedling production method that hatches the mother in the conventional larval breeding tank, it is possible to mass production that can prevent fish diseases such as parasites and bacteria.

In addition, the incubator of the present invention can be applied as an incubator for hatching not only blue crab, but also settling eggs or hatching eggs of various kinds of fish or crustaceans.

Referring to Table 1, the production period is four to twelve months, that is, the yearly production is possible, the production is more than doubled, and the harvested seedlings are more than doubled after one year. It was found that this was increased.

year Production period
(month) output
( Ten thousand ) Survival rate
(%) 1 year later
Catch
(ton) economical
effect
(Billion won) Invention Effect
(100 million won) invention
Whether or not to use Total economy
profit 168 Incubator
When not in use 4 380 60 760 152 - × Incubator
When using 12 800 60 1,600 320 168 ○

While the invention has been shown and described with respect to the specific embodiments thereof, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention as defined by the appended claims. Anyone who has it will know it easily.

10: incubator 12: container
13: neck 14: torso
16: Main water pipe 18: Water pipe
19: control valve 20: plug
22: discharge pipe 24: larval life path
25: discharge hole 26: larval transfer pipe
28: House of Larvae 29: Filter

Claims (6)

A container consisting of a body having a cylindrical neck formed thereon and having a constant volume of internal space;
A water supply pipe through which the aquaculture water is supplied from the upper end of the neck of the container;
Includes; is formed integrally on the neck side of the container discharge pipe for discharging aquaculture water filled up to the neck;
The crab egg incubator hatching the crab egg in the container, the crab larva hatched from the container is discharged to the outside through the discharge pipe.
The crab egg incubator according to claim 1, further comprising a control valve for adjusting the quantity of aquaculture water fed to the water pipe.
The crab egg incubator according to claim 1, wherein a stopper is provided at an upper end of the neck, and a water pipe is installed through the stopper and near the bottom of the container.
The crab egg incubator according to claim 1, wherein the hatching time of the eggs is controlled by adjusting the water temperature of the aquaculture water, the salt concentration of chlorine, or the yield of the aquaculture water as conditions for hatching the eggs.
The crab egg incubator according to claim 4, wherein the water temperature of the aquaculture water is 7-35 ° C, the salt concentration of chlorine is 15-20 ‰, and the yield is 12-16 liters per minute.
According to claim 1, wherein the vessel is provided with a plurality, the main water supply pipe installed to supply aquaculture water to the water pipe connected to the container,
A larvae passage through which larvae discharged through each discharge pipe of the plurality of containers are transferred;
The crab egg incubator further comprises a larval transfer pipe for transferring the larvae conveyed through the discharge hole formed in one side of the larvae passage to the larvae equipped with a strainer.

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