JPS61185138A - Cannibalism preventing breeding apparatus - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a cannibalism-preventing aquaculture device for cultivating crustaceans such as shrimps and crabs by preventing them from being cannibalized during molting.

[Prior art]

When cultivating crustaceans such as shrimp and crabs, it is important to preserve resources by preventing cannibalism during molting.

Conventionally, in systems for cultivating crustaceans such as shrimp and crabs, there is a method of rearing one shrimp at a time in a small room divided by a wire mesh or the like as a means of preventing cannibalism during molting.

[Problem that the invention seeks to solve]

The method of rearing one crustacean at a time as described above is extremely effective in preventing cannibalism when the crustaceans molt, but - because it is reared one at a time, it is time-consuming to feed the crustaceans, and it is difficult to feed them in large quantities. There was a problem that they were unsuitable for breeding.

In addition, if crustaceans such as shrimp and crabs are harvested after they have shed their skin, but before the skin has hardened, and then fried or otherwise cooked, these crustaceans can be eaten whole, and are highly nutritious. In recent years, aquaculture equipment for crustaceans such as shrimp and crabs has been attracting particular attention, and conventionally, there is no aquaculture equipment with a structure suitable for observing the molting of these crustaceans in detail from the outside and collecting them immediately after molting. I couldn't help it.

The present invention has been made in view of the above points.

To provide a cannibalism-preventing aquaculture device capable of preventing cannibalism during molting of crustaceans and monitoring the state of molting from the outside.

[Means for solving problems]

In order to solve the above-mentioned problems, the present invention provides an aquaculture device with a structure in which a plurality of small chambers each having an opening inside are provided along the outer periphery of the aquarium. In addition, the outer peripheral wall of the aquarium was made of transparent material such as plastic or glass, so that the inside of the small room could be observed from the outside.

Moreover, the water tank was made into a circular shape.

[Effect]

By configuring the aquaculture device as described above, when shrimps and crabs are raised in the aquarium having the above structure, the shrimps and crabs come to live in small rooms provided along the outer peripheral wall of the aquarium. The small room has an opening only on the inside of the aquarium, and the rest of the room is surrounded by walls, so they are not cannibalized when they shed their skin.

Furthermore, by constructing the outer circumferential wall of the aquarium with a transparent material, it becomes possible to observe the state of shrimp and crab molting and to easily collect them immediately after molting. Furthermore, by making the aquarium circular, it is possible to generate a circular water flow in the water in the aquarium and collect the remaining food in the center of the aquarium for removal.

〔Example〕

Embodiments of the present invention will be described below based on the drawings.

FIG. 1 is a diagram showing a cannibalism-preventing aquaculture device according to the present invention,
Figure (a) is a plan view, Figure (b) is A-A in Figure (a).
'It is a cross-sectional view on the line. As shown in the figure, an opening 4a is formed inside the aquarium 2 along the outer peripheral wall of the aquarium 2 supported by the support column 1.
A large number of small rooms 4 are provided. Outer wall 3 of water tank 2
is made of a transparent material such as glass or plastic, and allows the inside of the small chamber 4 to be observed from outside the aquarium.

5 is a water supply pipe that supplies seawater into the aquarium 2;

6 is a drain pipe connected to a drain hole provided in the center of the water tank 2.

When, for example, crabs are bred in the aquaculture device having the above structure, the crabs settle in the small room 4 one by one as shown in FIG. 1(b). In general, crustaceans such as crabs have the habit of easily fighting off attacks from the front by their allies, but are weaker when attacked from behind. Therefore, by adopting the above structure, the small room 4 has a structure in which only the inside of the aquarium is open and the surrounding area is surrounded by a wall, so that the crabs that have settled in the small part M4 can escape from the opening 4a. Even if they are attacked by their allies, they can easily repel them and will not be cannibalized.

In addition, when shedding its skin, the crab 8 pushes its exfoliated shell 9 forward with its back against the outer peripheral wall 3, as shown in FIG.
Since the opening 4a of the small room 4 is closed, it is possible to easily prevent attacks from companions during shedding.

When feeding, when food is placed in the center B of the aquarium 2, the crab 8 leaves the small room 4, eats the food, and returns to the small room 4 again.

Further, the uneaten food generates a circular water flow as shown by arrow C, so that the remaining food 9 gathers in the center of the tank 2 as shown in FIG. 1(b).

It becomes possible to open the valve 10 provided in the drainage vibro to suck up the remaining bait 9 gathered in the center of the water tank 2 together with the drainage water. Therefore, the remaining food will not remain in the tank 2 for a long time,
The flow of water in the aquarium reduces the incidence of diseases. In addition, in order to generate a circular water flow with little resistance, it is preferable to form the water tank 2 into a circular shape as shown in FIG. 3.

As mentioned above, the shells of crustaceans such as shrimp and crabs are soft immediately after molting, and if cooked while the shells are still soft, they can be eaten whole, and are said to be extremely rich in nutrients. Furthermore, when a crustacean molts its skin, the color of its shell changes over time, and it is said that if a person with specialized knowledge in the field observes it, it can be easily identified whether it is molting or not. Therefore, in order to collect shrimps and crabs immediately after molting, it is necessary to constantly observe them. By the way, if a large number of small rooms 4 are provided along the outer circumferential wall 3 of the aquarium as described above, it is possible to prevent cannibalism as described above, but it is possible to prevent shrimps, crabs, etc. living in the small rooms. , it is extremely difficult to determine whether the animal is in a state just before molting, or just after molting, etc. Therefore, in this embodiment, a transparent material such as plastic or glass is used for the outer wall of the aquarium 2, and the small room 4 is exposed from the outside of the aquarium 2.
to allow observation of the inside of the

In the above embodiment, the size and shape of the small room 4 are determined to be suitable for housing two or more crustaceans, depending on the size of the crustaceans to be cultured. Therefore, it is sufficient to prepare a large number of aquariums 2 with different sizes of small rooms 4 and to change the aquariums according to the growth rate of the crustacean.

In addition, in the above embodiment, as shown in FIG.
The reason why a flat terrace part 4b was provided in front of the opening 4a of the ji4 was to make it easier for shrimps, crabs, etc. to enter the small room 4.Experiments have shown that if this terrace part is provided, it is possible to enter the small room smoothly. has been confirmed.

FIG. 5 is a diagram showing another embodiment of the cannibalism-preventing aquaculture device according to the present invention, and FIG. 5(a) is a plan view.

FIG. 9(b) is a top view taken along line B-B' in FIG. 9(a). As shown in FIG. The back wall 4c of the small room 4 is made of a water-permeable plate having a structure in which a large number of small holes through which water flows are provided in a transparent plate such as wire mesh or plastic. Moreover, the water supply vibrator 5 is arranged so that the seawater discharged from the water supply port circulates along the gap M.

With the above structure, the seawater discharged from the water supply pipe is directed to the outside of tank 2! It flows back along i3 and flows toward the center of the tank 2 as shown by the arrow through the back wall 4c of the small portion I14. Due to the inflow of seawater into the aquarium 2, the crustacean feces and leftover food remaining in the small chamber 4 are collected in the center of the aquarium 2, and can be easily discharged from the aquarium to the outside by the drainage vibro. Therefore, such a structure is a factor in the occurrence of pests and diseases.

Corrosion of leftover feed and feces can be easily prevented. In addition,
In this case as well, a transparent material such as plastic or glass is used for the outer peripheral wall 3 of the aquarium 2 so that the inside of the small room 4 can be seen.

Furthermore, in the above embodiment, the entire outer peripheral wall is made of a transparent material such as glass or plastic, but only a part of the outer peripheral wall, that is, the rear part of the small room 4, is made of transparent material, so that the inside of the small room can be observed. You can do it like this.

Further, in the above embodiment, an example was shown in which a large number of small rooms were formed in two stages along the outer peripheral wall 3, but the number is not limited to two stages, and it may be more than two stages, or may be one stage.

〔Effect of the invention〕

As explained above, according to the present invention, cannibalism of crustaceans can be prevented and the animals can be reared while conserving resources, which is an extremely excellent effect. Furthermore, by having a structure that allows observation of the inside of the small chamber, crustaceans can be easily collected immediately after molting. Furthermore, it becomes easy to generate rice water flow in the aquarium and collect the remaining bait in the center of the aquarium, making it extremely easy to remove the remaining bait.

[Brief explanation of drawings]

FIG. 1 is a diagram showing the structure of a cannibalism-preventing aquaculture device according to the present invention, in which (a) is a plan view, (b) is a top sectional view taken along line A-A'' in (a), Fig. 2 is a diagram showing the state in which crabs shed their skin in a small room, Fig. 3 is a plan view showing the structure of another cannibalism prevention aquaculture device according to the present invention, and Fig. 4 is a partial view showing the state of the small room. The cross-sectional view and FIG.
) is a top cross-sectional view taken along line BB'' in FIG. In the figure, 1... Support, 2... Water tank, 3... Outer peripheral wall,
4...Small room, 5...Water supply pipe, 6...Drainage vibrator.

Claims (4)

[Claims] (1) A cannibalism-preventing aquaculture device characterized by having a plurality of small chambers each having an opening on the inside along the outer peripheral wall of the aquarium. (2) A plurality of small rooms are provided with a gap between them and the outer circumferential wall of the aquarium, each having an opening on the inner side along the outer circumferential wall, and a permeable plate material on the outside that allows water to easily flow in. Features: Cannibalism prevention aquaculture equipment. (3) The cannibalism according to claim 1 or 2, characterized in that the outer peripheral wall of the water tank is made of a transparent material so that the inside of the small chamber can be observed from the outside. Prevention aquaculture equipment. (4) The cannibalism-preventing aquaculture device according to claim (1) or (2), characterized in that the water tank is circular.