JP3227135B2 - Artificial spawning equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a review of natural ecosystems in lakes, marshes and rivers, and more particularly to an artificial spawning apparatus for restoring a natural large system related to spawning of fish and compensating a food chain in the part. is there.

[0002]

2. Description of the Related Art In recent years, ecosystems that should naturally breed and survive have been destroyed as a result of revetment work in lakes and rivers. In other words, spawning of sweetfish and smelt is usually done on the riverbed where the pebbles of the river exist,
In many cases, earth and sand cover the pebble crucifixion due to river improvement work or the like, and it becomes impossible to lay eggs of these fishes.

[0003]

As described above, when a part of the ecosystem is destroyed, the food chain collapses, and over time, birds such as cormorants and herons that consume these small fish disappear. In addition, there is a problem that phytoplankton and zooplankton multiply excessively and deteriorate water quality.

In view of the above problems, the present invention suppresses the growth of phytoplankton and zooplankton by breeding small fish such as sweetfish and smelt, and secures the food chain of birds consuming these small fish. It is an object of the present invention to provide an artificial spawning apparatus for fish having a novel structure that can be floated on the water surface or in water.

[0005] In addition to simply purifying the water chain to complete the purification of water quality, it is also possible to actively breed fish, breed fish as food, and enjoy fishing in leisurely dark water areas. It is an object of the present invention to provide an artificial spawning apparatus for fish having a novel structure capable of securing the fish.

[0006]

SUMMARY OF THE INVENTION An artificial spawning apparatus according to the present invention has a waterway structure which has a width and a length, and which forms a waterway in which a fish spawning bed is formed on at least a part of a roadbed or a roadwall. Body, a floating structure having sufficient buoyancy to float the waterway structure on the surface or in the water of a lake or river, and water from a lake or river flowing from one end of the waterway structure to the other end. A waterway water passage device that allows water to flow and makes the upstream side of the waterway structure impermeable to fish, and a power supply device that supplies drive power to the waterway waterway device, and is mounted on a water surface such as a lake or a river to support it. The gist is to do.

The channel structure is a channel-type channel structure having a channel-shaped cross section with an open top surface or a channel-type channel structure having a cylindrical section such as a cylinder or a square pipe. Floated on the surface of the river.

The fish spawning bed constructed in the above-mentioned waterway structure can be implemented by an artificial spawning bed in which small gravel or gravel is arranged and adhered to the surface of a flexible net, and a part of the floating structure. The plants can thrive and become floating islands.

The above-mentioned channel water passage device can be implemented by a water pump. The power supply device is driven by electric power such as a wind power generator built on a floating structure, a solar thermal power generator, or a commercial power supply introduced from the outside. Thus, it is possible to secure a predetermined amount of water flow through the waterway structure.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An artificial spawning apparatus according to the present invention will be described below with reference to the schematic views shown in FIGS. Sign 1
Is a channel structure having a width and a length as appropriate, and forming a channel in which a fish spawning bed 3 is formed on a roadbed 2. In the present embodiment, a channel type channel having a channel-shaped cross section with an open top surface. 4 is presented.

[0011] The waterway structure 1 is floated on the water surface H of a lake or a river by a floating structure denoted by reference numeral 5. In the present embodiment, the specific gravity of the floating frame 6 having a hollow pipe is relatively high. A floating island is formed by attaching a fiber material made of artificial or natural fiber having a small size to form a plant rooting layer 7 that enables the roots of plants to survive. Will have sufficient buoyancy to float on the ground.

The fish spawning bed 3 formed in the waterway structure 1 can be repeatedly used by an artificial spawning bed in which small gravel or gravels 8 are arranged and adhered to the upper surface of a flexible net 9. In the vicinity of the upstream end of the waterway structure 1, a fish impermeable net 10 having a mesh size that does not allow small fish to pass is stretched.

Reference numeral 11 denotes a water pump for pumping water from a lake or a river from one end to the other end of the water channel structure 1 as a water channel water supply device, and the floating structure as a power supply device. Power is supplied from a wind power generator 12, a solar thermal power generator 13, or a commercial power supply 14 introduced from the outside, and the pumping pump 11 can be driven to secure a predetermined amount of water flow through the waterway structure 1. .

In the artificial spawning apparatus having the above-mentioned structure, the waterway structure 1 is floated and supported on a water surface H such as a lake or a river by a floating structure 5, and is provided on the downstream side of the grooved waterway 4 of the waterway structure 1. It is preferable to install the roadbed 2 so that it is substantially at the same height as the water surface H.

When the pumping pump 11 is driven to continue flowing water through the channel 4, small fish such as ayu and smelt entering the small gravel or gravels 8 of the spawning bed 3 from the downstream of the channel 4. Lays eggs. The small fish that has finished spawning is washed away by the water current and returned from the downstream end of the channel 4 to a lake or a river.
Will prevent entry. The eggs laid on the spawning bed 3 in this way hatch after a certain period of time, and are released from the channel 4 into lakes or river water.

[0016]

Next, an embodiment of the artificial spawning apparatus according to the present invention will be described. [Embodiment 1] With respect to the artificial spawning apparatus of the present invention, in the embodiment of the present invention, the channel type channel 4 in which the channel structure 1 has a channel-shaped cross section has been described, but the structure is shown in FIG. 4 (a) or (b). As shown in ()), the present invention can be similarly applied to a cylindrical water channel 15 having a cylindrical cross section such as a cylinder or a square tube. In particular, in this case, it is preferable that the floating structure 5 is used in a state of floating below the water surface. The floating structure 5 can be attached to the bottom surface of the floating island. Can be installed.

In the description of the embodiments and examples of the present invention, the fish spawning bed 3 is replaced with the grooved channel 4 or the cylindrical channel 1.
In the channel type channel 4, the channel channel 1 has a subfloor 2, but in the channel type channel 4, not only the floor but also the side wall and the ceiling in the case of the cylindrical channel 15. The spawning bed 3 can also be provided on the road wall corresponding to the part.

Further, in the description of the above embodiment, the water channel of the water channel structure 1 is shown as being straight. However, as shown in FIG. 5, the water channel may be bent or bent in the plane direction. The same operation and effect as in the above embodiment are maintained.

[0019]

As described above, the artificial spawning apparatus according to the present invention has a waterway structure which has a width and a length and which forms a waterway in which a fish spawning bed is formed on a subgrade, and the waterway structure described above. A floating structure having sufficient buoyancy to float the water or the water of the lake or river from one end to the other end of the waterway structure. A water passage water passage device having a structure on the upstream side of which fish cannot pass, and a power supply device for supplying driving power to the water passage water passage device, and are mounted on a water surface such as a lake or a river and supported. In addition to breeding small fish such as smelt and smelt, the proliferation of phytoplankton and zooplankton can be suppressed, and the food chain of birds that consume these small fish can be secured.

In addition, since small fish such as sweetfish and smelt can be artificially bred, it is possible not only to suppress the growth of plankton and to purify water quality but also to raise fish as food. In addition, the present invention is characterized in that it is possible to secure a fish shadow-rich water area for fishing and leisure, and the effect obtained by implementing the present invention is extremely large.

[Brief description of the drawings]

FIG. 1 is a schematic longitudinal sectional view, partially cut away, showing the structure of an artificial spawning apparatus according to the present invention.

FIG. 2 is a plan view of the same.

FIG. 3 is a perspective view of the egg-laying bed.

FIGS. 4A and 4B are schematic views showing another embodiment of the artificial egg laying bed according to the present invention.

FIG. 5 is an explanatory diagram illustrating an example of a planar shape of a water channel of the water channel structure.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Waterway structure 2 Subgrade 3 Spawning bed 4 Groove type waterway 5 Floating structure 6 Floating frame 7 Plant rooting layer 8 Small gravel or gravel 9 Net 10 Fish non-passing net 11 Water channel water pump (pump pump) 12 Wind power Power generator 13 Solar thermal power generator 14 Commercial power supply 15 Cylindrical water channel

──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Tadanori Maeda 45-18 Oyamacho, Shibuya-ku, Tokyo Inside Maeda Outdoor Art Co., Ltd. (72) Inventor Gen Saito 2-14-2 Kojimachi, Chiyoda-ku, Tokyo Foundation Law (58) Field surveyed (Int. Cl. ⁷ , DB name) A01K 61/00

Claims (6)

(57) [Claims] 1. A waterway structure having an appropriate width and length and defining a waterway having a fish spawning bed formed on at least a part of a roadbed or / and a roadwall; A floating structure having a sufficient buoyancy for floating on the water surface or in the water; and a fish flowing upstream and downstream of the waterway structure while passing water from a lake or a river from one end to the other end of the waterway structure. An artificial spawning floor for fish, comprising: a channel water passage device having an impervious structure; and a power supply device for supplying drive power to the channel water passage device, wherein the artificial water layer is supported by floating on a water surface such as a lake or a river. 2. The waterway structure according to claim 1, wherein the waterway structure is a channel-shaped waterway structure having a channel-shaped cross section with an open top, and is floated on the water surface of a lake or a river by a floating structure. Artificial spawning equipment. 3. The waterway structure according to claim 1, wherein the waterway structure is a cylindrical waterway structure having a cylindrical cross section such as a cylinder or a square tube, and is floated underwater or on the surface of a lake or a river by a floating structure. The artificial egg-laying apparatus according to claim 1, wherein 4. The artificial spawning apparatus according to claim 1, wherein the fish spawning bed formed in the waterway structure is an artificial spawning bed in which small gravel or gravels are arranged and adhered to the surface of a flexible net. 5. The floating structure according to claim 1, wherein the floating structure is a floating island in which plants are at least partially grown.
An artificial spawning apparatus as described. 6. The water flow passage device is a water pump.
The power supply device is driven by power from at least one of a wind power generation device built in the floating structure, a solar thermal power generation device, or a commercial power supply introduced from the outside, and secures a predetermined amount of water flow through the waterway structure. The artificial egg laying device according to claim 1, characterized in that: