JP2020130148A - Firefly breeding device - Google Patents

Abstract

To provide a firefly breeding device capable of more easily maintaining clean water quality.SOLUTION: A firefly breeding device 1 comprises: a water tank part 2; a firefly storage part 3 for storing water and fireflies; a water supply part 5; and a water discharge part 4. At least a part of the firefly storage part is arranged in the water tank part and at an upper side. The water supply part comprises: a pump part for sucking water to be put into the water tank part; a filtration part 52 for filtering the sucked water; and a first water conduction pipe 51 for causing the filtered water to flow into inside of the firefly storage part. The water discharge part comprises a second water conduction pipe 41 which is provided on the firefly storage part and discharges overflow water which exceeds a prescribed water level in the firefly storage part to the water tank part by gravitation. The water is circulated from the water tank part, to the water tank part through the water supply part, the firefly storage part and the water discharge part in this order.SELECTED DRAWING: Figure 1

Description

The present invention relates to a firefly breeding device.

In recent years, as part of education in the field of education, insects may be bred and observed in the classrooms of general educational institutions (elementary school, junior high school, high school, etc.). Examples of such insects include fireflies and the like.

When growing fireflies, it is necessary to maintain clean water quality and secure food. The main food for fireflies is juvenile shellfish such as Kawanina. On the other hand, for predation of juveniles, fireflies need to consume energy to track the fleeing juveniles. Excessive energy consumption can kill fireflies (especially larvae). Therefore, usually, a large amount of juvenile clams are put into the breeding device so as to facilitate predation. However, as a result, the water quality in the breeding apparatus is easily contaminated by uneaten juvenile clams and excrement.

In Patent Document 1, for the purpose of providing a firefly breeding device having excellent water purification properties and the like, a firefly breeding device including a porous body layer formed in a layer at the bottom of a water tank with a plurality of porous bodies is proposed. Has been done.

Japanese Unexamined Patent Publication No. 2003-265071

However, there is a need for a firefly breeding device that can more easily maintain clean water quality.

The present invention has been completed in view of the above circumstances, and an object of the present invention is to provide a firefly breeding apparatus capable of more easily maintaining clean water quality.

The present inventors have found that the above problems can be solved by a predetermined breeding device including a water tank unit, a firefly storage unit, a water supply unit, and a water discharge unit, and have completed the present invention. It was. More specifically, the present invention provides the following.

(1) A firefly breeding device including a water tank unit, a firefly storage unit for accommodating water and fireflies, a water supply unit, and a water discharge unit.
At least a part of the firefly housing is located inside and above the aquarium.
The water supply unit includes a pump unit that sucks water to be put into the water tank unit, a filtration unit that filters the sucked water, and a first unit that causes the filtered water to flow into the inside of the firefly storage unit. Equipped with a water flow pipe,
The water discharge portion is provided in the firefly accommodating portion, and includes a second water pipe that discharges overflow water above a predetermined water surface in the firefly accommodating portion to the water tank portion by gravity.
A breeding device configured to circulate water from the aquarium section through the water supply section, the firefly accommodating section, and the water discharge section in this order to the aquarium section.

(2) The breeding device according to (1), wherein an opening is formed on the side surface of the firefly accommodating portion, and the second water pipe penetrates the opening.

(3) The second water pipe is an L-shaped hollow material having a circular cross section.
The opening has substantially the same diameter as the circular cross section.
The breeding device according to (2), wherein the second water pipe penetrates in the opening in a rotatable state.

(4) The breeding device according to any one of (1) to (3), wherein the firefly accommodating portion is mounted on a support provided inside the aquarium portion.

According to the present invention, it is possible to provide a firefly breeding device that can more easily maintain clean water quality.

It is a schematic diagram which shows the outline of one aspect in the breeding apparatus of this invention. It is a figure which shows one aspect in the breeding apparatus of this invention. It is a figure which shows the state which removed the aquarium part in one aspect of the breeding apparatus of this invention.

Hereinafter, embodiments of the present invention will be described, but the present invention is not limited thereto.

<Action of firefly breeding device>
The action of the firefly breeding apparatus of the present invention (hereinafter, also referred to as “the breeding apparatus of the present invention”) will be described in detail below with reference to the drawings as appropriate.

The breeding device of the present invention includes at least a water tank unit, a firefly storage unit for accommodating water and fireflies, a water supply unit, and a water discharge unit, and satisfies all of the following requirements.
(Requirement 1) At least a part of the firefly accommodating portion is located inside and above the water tank portion.
(Requirement 2) The water supply unit includes a pump unit that sucks the water to be put into the aquarium, a filtration unit that filters the sucked water, and a first passage that allows the filtered water to flow into the firefly storage unit. It is equipped with a water pipe.
(Requirement 3) The water discharge unit is provided in the firefly storage unit and includes a second water pipe that discharges overflow water above a predetermined water surface in the firefly storage unit to the water tank unit by gravity.
(Requirement 4) Water is circulated from the water tank part to the water tank part through the water supply part, the firefly accommodating part, and the water discharge part in this order.

"At least a part of the firefly housing part is located inside the water tank part" means that at least a part of the space inside the water tank part is occupied by at least a part of the firefly housing part. The entire firefly accommodating portion may be located inside the water tank portion, or a part of the firefly accommodating portion may be located inside the water tank portion. In FIG. 1, a part (lower part) of the firefly accommodating portion 3 is located inside the water tank portion 2 (in other words, a part (upper portion) of the firefly accommodating portion 3 is outside the water tank portion 2). Aspects located in) are shown.

"At least a part of the firefly housing part is located above the water tank part" means that at least a part (preferably all) of the bottom surface of the firefly housing part on the water tank part side (bottom surface of the firefly housing part) is the water tank part. It means that it is located higher than the bottom surface (usually the ground plane of the breeding device of the present invention). With such a configuration, the water discharged from the water discharge portion provided in the firefly accommodating portion can flow into the water tank portion by gravity. Normally, the bottom surface of the firefly accommodating portion is substantially parallel to the bottom surface of the water tank portion. The distance between the bottom of the firefly housing and the bottom of the water tank depends on the height of the firefly housing, the height of the water tank, the water level of the water tank (the height of the water surface), the amount of water to be circulated, etc. Can be adjusted. The distance between the bottom surface of the firefly accommodating portion and the bottom surface of the water tank portion may be, for example, 120 to 200 mm. The water level of the water in the water tank is usually higher than the bottom surface of the water tank and lower than the bottom surface of the firefly accommodating part.

In order to position at least a part of the firefly accommodating part inside and above the water tank part, the firefly accommodating part may be placed on a support provided inside the water tank part, or the edge part (opening edge part, etc.) of the water tank part may be placed. It may be locked with a string or the like. In FIGS. 1 to 3, the firefly accommodating portion 3 is placed on a support 6 provided inside the water tank portion 2.

With a breeding device that satisfies the above requirements, a cycle consisting of the following steps can be realized, the water in the breeding device of the present invention can be circulated, and the water in the breeding device can be easily maintained at a clean water quality.
(Step 1) The water in the water tank section is made to flow into the firefly housing section via the water supply section.
(Step 2) After the step 1, at least a part of the water flowing into the firefly accommodating portion is discharged from the water discharge portion provided in the firefly accommodating portion to the water tank portion.
(Step 3) After the step 2, the water in the water tank section is made to flow into the firefly accommodating section through the water supply section in the same manner as in the step 1.

(Step 1)
The water in the water tank flows into the firefly housing part by the action of the water supply part. The water supply unit includes a pump unit that sucks the water to be put into the aquarium, a filtration unit that filters the sucked water, and a first water passage pipe that allows the filtered water to flow into the inside of the firefly storage unit. Be prepared. In FIG. 1, the water of the water tank unit 2 sucked by the pump (not shown) of the water supply unit 5 flows into the firefly accommodating unit 3 from the outlet of the first water pipe 51 via the filtration unit 52. ..

(Step 2)
The water that flows into the firefly housing from the aquarium is used for the growth of fireflies and juvenile mussels that feed on them. This water flows into the aquarium from the water discharge section provided in the firefly storage section, with at least a part of it containing excrement and garbage (leftover food, carcasses, firefly molting gala, etc.).

The water discharge unit provided in the firefly storage unit causes water to flow out to the water tank unit by the action of gravity when the water surface inside the firefly storage unit reaches a predetermined height or higher. That is, the water discharge portion of the firefly accommodating portion has a function as a so-called overflow port for discharging overflow water above a predetermined water surface in the firefly accommodating portion to the water tank portion. The "predetermined water surface in the firefly accommodating portion" can be adjusted according to the position of the water discharge portion.

The amount of water discharged (overflowing) from the water discharge part to the water tank part can be adjusted by adjusting the position of the mouth part of the water discharge part with respect to the water level of the firefly accommodating part and the diameter of the mouth part of the water discharge part. .. For example, by adjusting the angle of the short side of the L-shaped second discharge portion 41 provided in the water discharge portion 4 with respect to the water surface, the diameter of the cavity portion of the water discharge portion 4, and the like shown in FIG. Can be adjusted.

More specifically, in FIG. 2, if the short side of the L-shaped second discharge portion 41 provided in the water discharge portion 4 is separated from the water surface (or the bottom surface 31 of the firefly accommodating portion 3) (that is,). If the short side of the L-shape of the water discharge portion 4 is brought close to the water surface (or the bottom surface 31 of the firefly accommodating portion 3) perpendicularly, the amount of discharged water is reduced. FIG. 2 shows a state in which the short side of the L-shaped second discharge portion 41 provided in the water discharge portion 4 is separated from the bottom surface of the firefly accommodating portion 3.

In FIG. 2, if the short side of the L-shaped second discharge portion 41 provided in the water discharge portion 4 is brought close to the water surface (or the bottom surface 31 of the firefly accommodating portion 3) (that is, in the water discharge portion 4). If the short side of the provided L-shaped second discharge portion 41 is brought close to the water surface (or the bottom surface 31 of the firefly accommodating portion 3) horizontally, the amount of water to be discharged increases.

Also, if the mouth of the water discharge part is adjusted so that the diameter of the cavity of the water discharge part becomes smaller (for example, if the mouth is covered with a water-repellent material or the like), the amount of water discharged is small. Become.

(Step 3)
The water discharged from the water discharge unit provided in the firefly storage unit to the water tank unit flows into the firefly storage unit by the action of the water supply unit as in step 1.

By repeating steps 1 to 3, water circulates from the aquarium section through the water supply section, firefly storage section, and water discharge section in this order to the aquarium section, and easily maintains clean water quality in the firefly breeding device. it can.

<Configuration of firefly breeding equipment>
Each configuration of the breeding apparatus of the present invention will be described in detail below with reference to the drawings as appropriate.

(Aquarium)
The material, shape, size, etc. of the water tank portion are not particularly limited as long as it is a container in which water can be put and at least a part of the firefly accommodating portion can be located.

Examples of the material of the water tank portion include resin (polypropylene, polyacrylate, etc.), glass, ceramic, and the like.

The size of the water tank can be adjusted according to the size of the firefly housing, for example, width (inner dimension) 200 to 600 mm x depth (inner dimension) 300 to 400 mm x height (inner dimension) 200 to 300 mm. There may be. In this case, the water level in the water tank portion may be 100 to 180 mm, and the distance between the bottom surface of the firefly accommodating portion and the bottom surface of the water tank portion may be 120 to 200 mm.

The shape of the water tank portion is not particularly limited, and may be, for example, a rectangular parallelepiped, a cube, a cylinder, an elliptical pillar, or the like. For ease of installation and handling, the aquarium usually has a flat bottom surface (however, the aspect in which a part of the surface is uneven is not excluded). Normally, the upper part of the water tank portion (facing the bottom surface) is open, but a lid may be used so as not to hinder the installation of the firefly accommodating portion.

The water in the aquarium is not particularly limited as long as it is suitable for the growth of fireflies, and may be tap water, groundwater, river water, well water, or the like. The water to be put into the water tank is preferably dechlorinated water. Examples of the dechlorination treatment include aeration, heating, activated carbon, and a method using a dechlorinating agent.

The amount of water to be put into the water tank portion may be, for example, 15 to 25 L.

The temperature of the water in the water tank is preferably 16 to 25 ° C.

(Water supply department)
The water supply unit includes a pump unit that sucks the water to be put into the aquarium, a filtration unit that filters the sucked water, and a first water passage pipe that allows the filtered water to flow into the inside of the firefly storage unit. Be prepared.

The water in the breeding apparatus of the present invention can be circulated by the action of the water supply unit to maintain clean water quality.

The pump unit sucks the water in the water tank unit into the water supply unit by the action of pressure. As the pump unit, a conventionally known pump can be used.

The water sucked into the water supply unit passes through the filtration unit. The configuration of the filtration unit is not particularly limited, but usually includes a filter or the like. When the water sucked into the water supply unit contains excrement and dust, the excrement and dust are trapped in the filter and the like when the water passes through the filtration unit. Therefore, the water that has passed through the filtration section has clean water quality.

For example, as shown in FIG. 1, the water that has passed through the filtration unit 52 flows into the firefly accommodating unit 3 from the outlet of the first water pipe 51.

The structure, position, etc. of the water supply unit are not particularly limited as long as the above effects can be achieved. The water supply unit is usually installed so that the filtration unit comes into contact with the water in the water tank unit. For example, as shown in FIGS. 1 and 3, the first water pipe 51 is usually tubular so that water that has passed through the filtration section can pass through. The diameter of the first water pipe is not particularly limited, but may be 5 to 10 mm.

The positional relationship between the first water pipe in the water supply section and the water discharge section provided in the firefly accommodating section is not particularly limited as long as the above action can be achieved. For example, as shown in FIGS. 1 to 3, the first water pipe is provided so that the water flowing from the water tank portion 2 to the firefly accommodating portion 3 via the water supply portion 5 can be appropriately distributed into the firefly accommodating portion 3. It is preferable that the positions of the water discharge unit 4 (second water pipe 41) are appropriately separated from each other.

As the water supply unit, a commercially available air lift (for example, trade name "Mizusaku Eight M", manufactured by Mizusaku Co., Ltd.) can be used.

The number of water supply units is not particularly limited, and a number corresponding to the number of firefly storage units can be used. For example, FIG. 2 shows an example in which two firefly housing units 3 and two water supply units 5 are used.

The amount of water flowing out from the water supply unit to the firefly storage unit is not particularly limited, but the flow velocity may be 50 to 200 ml / min.

(Firefly containment)
The firefly storage unit is a container that can store water, fireflies and their food (juveniles, etc.), and can accommodate at least a part or all of the firefly storage unit inside the aquarium. If there is, the material, shape, size, etc. are not particularly limited. Further, in the breeding apparatus of the present invention, the number of firefly accommodating portions is not limited, and may be one or two or more.

Examples of the material of the firefly accommodating portion include resin (polypropylene, polyacrylate, etc.), glass, ceramic, and the like.

The size of the firefly accommodating portion may be, for example, width (inner dimension) 140 to 180 mm × depth (inner dimension) 200 to 300 mm × height (inner dimension) 80 to 120 mm. In this case, the number of fireflies to be put in the firefly housing is usually 200 to 400 for fireflies in the early larval stage and 40 to 60 for fireflies in the late larval stage. With such a size of the firefly containment, fireflies (particularly firefly larvae) can feed without consuming excessive energy.

The shape of the firefly accommodating portion is not particularly limited, and may be, for example, a rectangular parallelepiped, a cube, a cylinder, an elliptical pillar, or the like. Due to its ease of installation and handling, the firefly housing usually has a flat bottom surface (however, the unevenness of a part of the surface is not excluded).

The upper part of the firefly accommodating portion may be appropriately covered with a breathable material such as a net to prevent the fireflies from escaping.

The water accommodated in the firefly accommodating portion is usually water that has flowed in from the water tank portion 2 through the water supply portion 5, as shown in FIGS. 1 and 2, for example.

As the fireflies housed in the firefly storage section, fireflies (Genji fireflies, Heike fireflies, etc.) that spend the larval stage in water are preferably used. Fireflies of any age can be used, and it is preferable to feed a size and amount of food according to the age. The frequency of feeding is usually about once a week.

As the food for fireflies, juvenile shellfish such as Kawanina are preferably used.

Sand, stone, artificial aquatic plants, cylindrical tubes and the like may be appropriately placed in the firefly accommodating portion.

By looking inside the firefly housing from the top of the firefly housing, you can easily observe the growth of fireflies.

[Water discharge part]
A water discharge section is provided in the firefly housing section. The amount of water discharged from the water discharge section to the aquarium section is preferably increased or decreased according to the growing condition of fireflies.

The position of the water discharge portion is not particularly limited, but it is usually provided on the vertical side surface (side wall) of the firefly storage portion in order to discharge the overflow water above the predetermined water surface in the firefly storage portion to the water tank portion by gravity. It is preferable that the water discharge portion is provided so that the water stored in the firefly accommodating portion flows down toward the lower side of the vertical side surface of the firefly accommodating portion (bottom side of the firefly accommodating portion).

The water discharge part need only be able to discharge water from the firefly storage part to the water tank part, and the size, shape, position, and number of the water discharge parts are not particularly limited, and the amount of water to be circulated, etc. Can be adjusted accordingly. For example, as shown in FIG. 2, one water discharge unit 4 may be provided on the vertical side surface of the firefly accommodating unit 3 apart from the water supply unit 5 (note that the water discharge unit 4 in FIG. 2 is provided. , A second water pipe 41 separate from the firefly accommodating portion 3 is provided.)

The number of water discharge parts may be one or two or more. From the viewpoint that the amount of water flowing from the firefly accommodating portion into the water tank portion can be easily adjusted, the number of water discharging portions per firefly accommodating portion is preferably one.

The water discharge section includes a second water pipe that discharges overflow water above a predetermined water surface in the firefly accommodating section to the water tank section by gravity.

The shape of the cross section of the second water pipe may be circular, elliptical, square, rectangular or the like.

The size of the second water pipe (the length of the diameter of the cross section) is usually smaller than the height of the vertical side surface of the firefly housing. The diameter of the cross section of the second water pipe may be, for example, 10 to 15 mm.

The water discharge portion may be an opening (hole) itself provided on the vertical side surface (side wall) of the firefly accommodating portion, and the opening is provided with a water pipe separate from the firefly accommodating portion. It may be. In the former case, the opening corresponds to the second water pipe, and in the latter case, the water pipe separate from the firefly accommodating portion corresponds to the second water pipe. In the latter case, the second water pipe penetrates the opening formed on the side surface of the firefly accommodating portion. An example of the latter is shown in FIGS. 1 to 3, and the water discharge unit 4 includes a second water pipe 41 separate from the firefly accommodating unit 3.

When the second water pipe is a water pipe separate from the firefly accommodating portion, the second water pipe is also a liquid passing portion for allowing water to flow from the firefly accommodating portion to the aquarium portion, and thus is usually used. , Hollow materials such as pipes and pipes.

When the second water pipe is a water pipe separate from the firefly accommodating portion, and there is a gap between the opening of the firefly accommodating portion and the second water pipe penetrating the opening, for example, FIG. As shown, the second water pipe 41 provided in the water discharge portion 4 seals the gap between the second water pipe 41 and the opening provided on the side surface of the firefly accommodating portion 3 with packing (using a rubber plate). You may. However, as will be described later, since it is preferable that the second water pipe penetrates in a rotatable state within the opening through which the second water pipe penetrates, the sealing does not hinder the rotation of the second water pipe. It is preferable to carry out.

When the second water pipe is a water pipe separate from the firefly accommodating portion, the size of the second water pipe is, for example, a cross-sectional diameter of 10 to 15 mm and a longitudinal length of 10 to 200 mm. It may be.

When the second water pipe is a water pipe separate from the firefly accommodating portion, the shape of the second water pipe is the shape of the opening of the firefly accommodating portion and this for ease of handling and installation. It is preferable that the shape of the cross section of the second water pipe penetrating the water pipe is the same. For example, as shown in FIG. 2, the shape of the cross section of the second water pipe 41 and the shape of the opening provided on the side surface of the firefly accommodating portion 3 may both be circular.

When the second water pipe is a water pipe separate from the firefly accommodating portion, the second water pipe penetrates the opening formed on the side surface of the firefly accommodating portion and satisfies all of the following requirements. Is preferable. According to the water discharge section provided with such a second water pipe, the amount of water discharged from the firefly accommodating section to the water tank section can be easily adjusted.
(Requirement A) The second water pipe is an L-shaped hollow material having a circular cross section.
(Requirement B) The opening through which the second water pipe penetrates has substantially the same diameter as the circular cross section of the second water pipe.
(Requirement C) The second water pipe penetrates in a rotatable state within the opening through which the second water pipe penetrates.

In Requirement A, the lengths of the two sides forming the L-shape may be the same or different. When the lengths of the two sides forming the L-shape are different, the ratio of the lengths of the long side and the short side is not particularly limited, but may be 1: 0.5 to 1: 5. When the lengths of the two sides forming the L-shape are different, the length of the long side may be 40 to 200 mm and the length of the short side may be 25 to 60 mm. When the lengths of the two sides forming the L-shape are the same, the lengths of the sides may be 40 to 50 mm. The angle formed by the two sides of the L-shape is not particularly limited, but is usually 60 to 100 degrees.

In Requirement C, "a state in which the second water pipe can rotate in the opening through which the second water pipe penetrates" means that the second water pipe penetrating the opening is in a direction perpendicular to the longitudinal direction of the second water pipe. In other words, it means a state in which the second water pipe can be moved in the circumferential direction of the circular cross section of the second water pipe. Usually, this state can be easily realized by passing the second water pipe through the opening in a state where the requirement B is satisfied. Further, this state can be realized even if only the side that does not penetrate the opening is rotated so as to twist with respect to the side that penetrates the opening among the two sides constituting the L-shaped tube.

Regarding Requirement C, the second water pipe is provided so that the short side of the L-shape is located inside the firefly housing and the end (mouth) of the long side of the L-shape is outside the firefly housing. It is preferable to penetrate it so as to be exposed. By arranging the second water pipe in this way and adjusting the angle of the L-shaped short side with respect to the bottom surface of the firefly accommodating portion, the height of the water surface of the firefly accommodating portion can be adjusted particularly easily.

The hole (mouth) of the water discharge part (second water pipe) may be covered with a net or the like so that the firefly does not escape from the firefly accommodating part. If the net or the like is clogged, the dirt may be removed with a dropper or the like, or the net or the like may be replaced.

[Support]
In order to position at least a part of the firefly accommodating part inside and above the water tank part, the firefly accommodating part may be placed on a support provided inside the water tank part, or the edge part of the water tank part (opening edge, etc.). It may be locked with a string or the like. From the viewpoint of ease of handling and mounting, it is preferable to use a support provided inside the water tank portion.

The support is provided inside the water tank portion in a state of being immersed in the water in the water tank portion. Therefore, as the material of the support, a material (resin, stainless steel, etc.) that is not easily affected by water is preferable.

The shape and size of the support are not particularly limited, but it is preferable that the support has a weight and shape that does not float in the water tank and allows the firefly accommodating portion to be placed in a stable state.

As the support, a commercially available wire rack can be preferably used.

(Other)
The breeding device of the present invention is installed in an environment suitable for the growth of fireflies. The breeding device of the present invention is preferably installed in a room where the temperature environment is 16 to 25 ° C., for example.

In the present invention, clean water quality can be maintained without frequently changing the water in the breeding apparatus. For example, the water in the breeding device may be replaced once or twice every 1 to 3 months.

The water in the firefly housing may increase the dissolved oxygen concentration by aeration using a tube such as a pipette.

The breeding device of the present invention can be easily maintained by appropriately cleaning the inside of the water tank portion and the firefly storage portion, removing dust and the like in the breeding device with a dropper, tweezers, etc., or replacing some or all of the water. Can be done.

Hereinafter, the present invention will be described in more detail with reference to Examples, but the present invention is not limited to these Examples.

<Making firefly breeding equipment>
A firefly breeding device 1 having the configuration shown in FIG. 2 was produced.

Specifically, the breeding device 1 in FIG. 2 has a water tank portion 2 (made of polypropylene, width (inner dimension) 470 mm × depth (inner dimension) 360 mm × height (inner dimension) 227 mm), and two firefly accommodating portions 3 (made of polypropylene). Made of polypropylene, width (inner size) 180 mm x depth (inner size) 240 mm x height 97 mm), water discharge part 4 provided in each firefly storage part 3, two water supply parts 5 (trade name "Mizusaku Eight M" , Made by Mizusaku Co., Ltd.).

In order to position the firefly accommodating portion 3 inside and above the water tank portion 2, the firefly accommodating portion 3 was placed on the support 6 having a height of 132 mm.

FIG. 3 is a diagram showing the positional relationship between the inside of the breeding device 1 excluding the water tank portion 2, that is, the firefly accommodating portion 3, the water discharge portion 4, and the water supply portion 5.

The water discharge portion 4 is an L-shaped hollow material (corresponding to the second water pipe 41, made of polypropylene, having a short side) penetrating an opening (diameter 13 mm) opened below the vertical side surface of the firefly accommodating portion 3. It has a length of 40 mm, a long side length of 140 mm, and a cavity diameter of 10 mm). The L-shaped hollow material has a length of 43 mm protruding outside the firefly accommodating portion 3. The gap between the L-shaped hollow material and the opening opened on the side surface of the firefly accommodating portion 3 was sealed by packing using a rubber plate. In this state, it was confirmed that the second water pipe 41 was rotatable in the opening.

The water tank portion 2 is filled with an amount of water that can be sufficiently circulated by the water supply portion 5 (in this example, tap water at room temperature is used to measure the water level of the water tank portion 2 (the height of the water surface from the bottom surface of the water tank portion 2). It was put in so as to be about 130 mm.) Due to the action of the water supply unit 5, the water in the aquarium unit 2 circulated in the breeding device 1 as follows.
First, the water supply unit 5 sucked the water from the water tank unit 2 into the water supply unit 5 by a pump (not shown). The sucked water passed through the filtration unit 52 built in the water supply unit 5 and flowed into the firefly accommodating unit 3 from the water pipe 51 (first water pipe) of the water supply unit 5 (flow velocity of about 50 to about 50 to). 200 ml / min). The water that flowed into the firefly accommodating portion 3 flowed out to the water tank portion 2 via the water discharge portion 4. The water that flowed out to the water tank unit 2 flowed into the firefly accommodating unit 3 via the water supply unit 5. Through the above cycle, the water in the aquarium 2 circulated in the breeding device 1 while maintaining clean water quality.

The amount of water flowing out from the firefly accommodating portion 3 to the water tank portion 2 is the angle of the L-shaped short side of the water discharge portion 4 with respect to the bottom surface of the firefly accommodating portion and the cavity portion of the water discharge portion 4 (second passage). It could be adjusted by adjusting the diameter of the mouth of the water pipe).

<Firefly breeding>
When the firefly larvae were put into the firefly storage unit 3 together with the feeding Kawanina and bred using the above-mentioned breeding device 1, the fireflies grew well. By changing the water once a month, we were able to maintain a cleaner growing environment.

1 Firefly breeding device 2 Aquarium 3 Firefly storage 4 Water discharge 5 Water supply 6 Support

Claims (4)

A firefly breeding device including a water tank unit, a firefly storage unit for accommodating water and fireflies, a water supply unit, and a water discharge unit.
At least a part of the firefly housing is located inside and above the aquarium.
The water supply unit includes a pump unit that sucks water to be put into the water tank unit, a filtration unit that filters the sucked water, and a first unit that causes the filtered water to flow into the inside of the firefly storage unit. Equipped with a water flow pipe,
The water discharge portion is provided in the firefly accommodating portion, and includes a second water pipe that discharges overflow water above a predetermined water surface in the firefly accommodating portion to the water tank portion by gravity.
A breeding device configured to circulate water from the aquarium section through the water supply section, the firefly accommodating section, and the water discharge section in this order to the aquarium section. The breeding device according to claim 1, wherein an opening is formed on a side surface of the firefly accommodating portion, and the second water pipe penetrates the opening. The second water pipe is an L-shaped hollow material having a circular cross section.
The opening has substantially the same diameter as the circular cross section.
The breeding device according to claim 2, wherein the second water pipe penetrates in the opening in a rotatable state. The breeding device according to any one of claims 1 to 3, wherein the firefly accommodating portion is mounted on a support provided inside the aquarium portion.

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