JP2008048630A - Carnivorous fish capture device and method for capturing carnivorous fish - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a carnivorous fish catching machine for capturing exotic carnivorous fish, a trapping net, a transparent cylindrical catching container provided with a plurality of bellmouth type guide cylinders on a side wall, and a bait for carnivorous fish It is a separate type consisting of three members, and can be easily installed, pulled up and moved without the need for other auxiliary work devices at the time of installation or pulling up. Since they can be stored separately, a carnivorous fish capturing machine and a method for capturing carnivorous fish with a compact storage volume are provided.
A side wall surface of a side peripheral wall of a transparent container having an enclosing net attached with a rope having a floating body attached to the other end at an appropriate interval on the periphery, a bottom plate having a large number of small holes, and a side peripheral wall. A cylindrical wall capturing container provided with a plurality of guiding cylinders for guiding carnivorous fish on the flat wall, and the outside of the capturing container is a container for taking out food container for carnivorous fish A carnivorous fish bait container that is surrounded by a protective net body for carnivorous fish, and that is provided with a pull-up rope with a floating ball attached to the top of the surrounding net body. Become.
[Selection] Figure 1

Description

  The present invention relates to a carnivorous fish capturing machine that captures carnivorous fish that are foreign species such as black bass, bluegill, and piranha, and a method for capturing carnivorous fish.

  Piranha, an exotic carnivorous fish that has been raised in domestic aquariums as ornamental fish, has become uncontrollable and released into domestic rivers and lakes. Have been breeding. In addition, foreign carnivorous fish such as black bass and bluegill that have been imported into Japan as a target fish for sports and fishing and released into rivers and lakes are also alien species. It adapts to the living environment in the lake, has expanded its habitat nationwide year by year, and is breeding in large numbers in rivers and lakes throughout the country. And these exotic carnivorous fish that bred in large quantities eat indigenous species that live in rivers and lakes in Japan, such as medaka, tanago, char, yamame, ayu, crucian carp, etc. The breeding of alien species, carnivorous fish, has brought about a crisis of collapse in the waterfront ecosystem, and the threat of extinction of native species has been called out.

  For this reason, a black bass capture reef as described in Patent Document 1 has been proposed as a capture device for a black bass that is an exotic carnivorous fish. As shown in FIG. 6, this black bass capture reef has a flat bar 62 fixed radially from each vertex of the octagonal lower mounting portion at the lower end of the central support 61 of the black bass capture reef capture body 60, Further, an octagonal bottom frame is formed by a lower connection angle 63 that horizontally connects the tips of the flat bars 62, and a bottom plate similar to the bottom frame and a side plate 64 that rises in the capture body 60 from the bottom plate edge. The protected protection breeding part water tank 65 is configured. An octagonal side column angle 66 is erected at the end of each base frame, and an upper connection angle 67 that horizontally connects the tips of the side column angles 66 is fixed. Further, the tip of each side column angle 66 is fixed. An oblique material angle 69 is fixed to the upper hook mounting portion 68 so as to be inclined upward toward the upper hook mounting portion 68 fixed to the upper end of the column 61 from the top. Further, the diagonal angle 69 above the side plate 64 of the protection and growth unit water tank 65 is connected, and the flat bar protection and growth upper part 70 is connected so as to be the same shape as the protection and growth unit water tank 65, and the side plate 64 of the protection and growth unit water tank 65. A crimp wire mesh 71 is stretched between the flat bar protective growth upper portion 70 to form a protective growth area 72 inside.

  Further, an expanded metal 73 is stretched in the space between the bottom plate of the protective nurturing water tank 65 and the lower connection angle 63 of each bottom frame, and the side column angle 66 surrounded by the upper connection angle 67 and the lower connection angle 63. An expanded metal 73 with a bus guiding hopper 74 fixed in the middle is stretched between them, and some of the expanded metals 73 with the bus guiding hopper 74 fixed at the center are used as a bus removing cover 75 that can be attached and detached freely. . A roof portion is provided between each upper connection angle 67, upper hook attachment portion 68, and diagonal material angle 69, and a live fish removal cover that can be opened and closed is attached along the diagonal material angle 69. In addition, a sinking hook 76 is fixed in the center of the upper hook mounting portion 68, and a sinking / lifting wire and a buoy are connected to the sinking hook 78. The upper hook mounting portion 68 has an opening for feeding bait hopper mounting portion. The part 77 is provided and the black bass catch reef is comprised.

  Fry and juveniles that serve as black bait feed are placed in the protection and breeding area 72, which is a double structure of the black bass reef capture body 60 constructed as described above, and captured by the crane on the ground of rivers and lakes 60 is sunk. Then, since the fry and larvae that serve as black bait bait are put in the protection and breeding area 72 of the capture main body 60, the black bass passes through the hopper 74 for bus induction and aims at the fry and larvae. However, since the bus guide hopper 74 has a wide entrance and a narrow exit, it moves around in the capture space without escaping from the capture space. The black bath that has entered the capture body 60 is taken out by removing the bus take-out cover 75 and capturing it.

However, in the black bass capture reef disclosed in Patent Document 1, the capture body of the black bass capture reef is made up of various frame materials (flat bar, angle material), bottom plate, side plate, crimped wire mesh, expanded metal, and bath removal cover. , And a protective structure for fry and larvae that serve as a bait for the black bass that has a double structure, and a black bass capture space for guiding and capturing the black bass as an integrated structure. The crane is used to install this heavy capture body on the ground of rivers and lakes, and the black bus capture reef is pulled up by the crane to capture the black bass. As described above, the black bass reef requires a support device such as a crane for installation and lifting work in rivers and lakes. In addition, this black bass capture reef has a protection body and black bath capture space integrated with various frame materials, bottom plate, side plate, crimped wire mesh, expanded metal, and bus removal cover. Because of its structure, it is bulky and requires a large storage location for storage on land.
JP 2001-269109 A

  Accordingly, the present invention has been made in accordance with the above-described problem, and a carnivorous fish trapping machine for capturing foreign carnivorous fish, a transparent cylindrical shape provided with a plurality of guiding cylinders for guiding carnivorous fish on a side wall surface, and a surrounding net. The structure is compact because it is a separate type consisting of three members: a container for catching fish and a bait container for carnivorous fish. It can be easily installed, pulled up and moved without the need for an auxiliary work device. In addition, when the carnivorous fish capture operation is not performed, the carnivorous fish trapping machine of the present invention can be stored separately in three members, so that a large space for storage and storage is not required, and the black bath having a compact storage bulk It is to provide a carnivorous fish capture machine that captures foreign carnivorous fish such as bluegill and piranha and a method for capturing carnivorous fish.

  In order to achieve the above object, according to the first aspect of the present invention, a side wall surface of a side wall of a cylindrical body having a bottom plate that forms a bottom and a transparent side wall is a flat wall, and is located inside the flat wall. It was manufactured using a cylindrical capture container provided with at least one guide cylinder for guiding carnivorous fish, and a material that is disposed inside the capture container and that can be seen through and through which water can flow. And a food container for carnivorous fish that forms a tubular body.

  The invention according to claim 2 of the present application is provided with a net that surrounds the outer periphery of the container, and a floating ball that is attached to the upper area of the net and the capturing container via a rope. It is characterized by.

  The invention according to claim 3 of the present application is characterized in that the cylindrical container is a cylindrical body having a polygonal cross section.

  The invention described in claim 4 of the present application is characterized in that the cylindrical body capturing container is a semi-cylindrical body having a flat wall on one side wall surface of the cylindrical body.

  In order to achieve the above object, the invention according to claim 5 of the present application lays a surrounding net on the bottom of a river or lake, and puts a carnivorous fish on the side wall surface in the central area on the laid surrounding net. A cylindrical capture container provided with at least one guiding cylinder for guiding is installed upright, and a container for food for carnivorous fish is placed in the transparent cylindrical capture container installed upright. When an appropriate number of carnivorous fish enters the transparent cylindrical capture container, pull up the enclosure rope to surround the transparent cylindrical capture container, and then clear the transparent cylindrical body. The container containing the food for carnivorous fish is pulled up with a rope, and then the enclosure net surrounding the transparent tubular body is pulled up to capture the carnivorous fish. It is a feature.

  A carnivorous fish catching machine that captures foreign carnivorous fish, a trapping net, and a transparent cylindrical catching vessel provided with a plurality of bellmouth type guide cylinders to guide carnivorous fish inside the side wall surface Because it is a separate type consisting of three parts with a bait container for carnivorous fish, the individual components are lightweight and compact. When this carnivorous fish catcher is installed in rivers, lakes and other areas, It can be easily installed, pulled up and moved without the need for an auxiliary work device. In addition, when the carnivorous fish is not captured, the carnivorous fish catcher of the present invention can be stored in three parts, so that a large space for storage and storage is not required, and the storage volume can be made compact. There is an effect that you can.

  A carnivorous fish catcher that captures alien carnivorous fish, enclosing nets, a transparent cylindrical catching container with a plurality of guide cylinders for guiding carnivorous fish on the side wall, and storage of prey for carnivorous fish By using a separate type consisting of the three components of the equipment, it can be easily installed, lifted and moved without the need for other auxiliary work equipment when installing or lifting on rivers and lakes. Since the carnivorous fish catcher can be stored in three parts, it does not require a large space for storage and storage, and the storage bulk is made compact.

Hereinafter, embodiments of the present invention will be described with reference to FIGS.
FIG. 1 is a longitudinal sectional view showing the arrangement relationship of the carnivorous fish capturing device of the present invention,
FIG. 2 is a plan layout diagram showing the layout relationship of the carnivorous fish capture device of the present invention,
FIG. 3 is a perspective view of a capture container that is an example of the carnivorous fish capturing device of the present invention.
FIG. 4 is a perspective view of a bell mouth type guide cylinder attached to the capture container of the carnivorous fish capture device of the present invention,
FIG. 5 is a perspective view of a capture container which is another example of the carnivorous fish capturing apparatus of the present invention.

  Reference numeral 1 in FIG. 1 is an enclosing net, and the enclosing net 1 has a size capable of enclosing a transparent cylindrical capture container 5 described below, and has a circular shape with a diameter of 6 to 8 m. Or a square size of 6 to 8 m on a side. A plurality of surrounding rope pulling ropes 3 are attached to the outer peripheral edge of the attachment ring 2 provided at appropriate intervals, and a floating ball 4 as a mark is attached to the other end of the lifting rope 3. Yes. This enclosure net 1 is laid on the bottom GL of a river or lake where a carnivorous fish such as a black bass or piranha may inhabit for capture by workers on the boat. Next, the capture container 5 which is a cylindrical body is installed in the central region on the enclosure net 1 laid on the bottom GL of the river or lake.

  The capture container 5, which is a cylindrical body that captures carnivorous fish such as black bass and piranha, is made of a transparent synthetic resin, and guides carnivorous fish such as black bass and piranha into the capture space 10 of the capture container 5. For this purpose, it has a side wall surface 6 provided with a plurality of bellmouth type guide cylinders 7 and a bottom wall 11 having a small hole. The planar cross-sectional shape of the capture container 5 is a cylindrical body having a planar wall on at least one side wall, and is a cylindrical body of a polygonal column such as a triangle, a quadrangle, a pentagon, or a hexagon. Further, if the one side wall surface is a plane side wall, a semi-cylindrical cylindrical body may be used. A rope 12 for pulling up and taking out the capture container 5 is provided at the upper end of the capture container 5, and a floating ball 13 is attached to the tip of the rope 12. Although the material of the capture container 5 is described as being made of a transparent synthetic resin, it is sufficient if it is transparent. For example, tempered glass or thick glass may be used.

  Reference numeral 8 denotes a wide mouth portion of the bell mouth type guide cylinder 7, which is provided flush with the plane side wall 6 of the side wall surface 6 of the transparent cylindrical capture container 5, and the bell mouth type guide cylinder. The narrow opening 9 opens into the capture space 10 of the transparent cylindrical capture container 5. The portion of the bell mouth type guiding cylinder 7 that extends from the wide opening 8 to the narrow opening 9 is formed with a tapered and transparent cylindrical asymptotic curve circumferential surface, and the transparent cylindrical capturing container 5 The inside of the capture space 10 communicates with the outside by a bell mouth type guide cylinder 7. The guide cylinder 7 is not limited to the bell mouth type, and any guide cylinder 7 may be used as long as it guides the carnivorous fish from the outside into the capture space 10 of the capture container 5. May be.

  Carnivorous fish such as black bass and piranhas are caught in a transparent cylindrical shape from the narrow mouth portion 9 of the tubular capture container 5 that is transparent along the asymptotic curve from the wide mouth portion 8 of the bellmouth type guide tube 7. The container 5 enters the capture space 10. A carnivorous fish such as black bass and piranha that has once entered the capture space 10 of the transparent cylindrical capture container 5 passes through the narrow mouth portion 9 of the bell mouth type guide tube 7 to the wide mouth portion 8 and is tubular. It is difficult to escape from the capture container 5 to the outside. The size of the wide mouth portion 8 and the narrow mouth portion 9 of the transparent cylindrical capture container 5 is appropriately selected depending on whether the carnivorous fish to be captured is a black bass or a piranha. In addition, the cross-sectional shape of the bellmouth type guide cylinder 7 is usually a circular shape, but is not limited to a circular shape, and may be an elliptical shape or a polygonal shape.

  Reference numeral 14 denotes a food container for carnivorous fish housed in the bottom plate forming the bottom and a transparent tubular capture container 5, which is a resin-made transparent tube provided with a large number of small holes on the side wall surface. It is a state. The bottom and outer periphery of a transparent tubular body made of a perforated resin are surrounded by a net 15 for taking out a container for bait for carnivorous fish and protecting the container for bait for carnivorous fish. On the upper part of the net 15 surrounding the carnivorous fish bait container 14, a rope 16 for pulling out the carnivorous fish bait container 14 is provided, and a floating ball 17 is attached to the tip thereof. It has been. A fish such as a live small fish that is a bait for carnivorous fish such as black bass and piranha is placed in the inside of the container 14 for carnivorous fish. In the above description, fish such as small fish that lived as salmon have been described. However, the present invention is not limited to this, and salmon can serve as food for carnivorous fish, such as crustaceans, aquatic fish, and the like. Insects, terrestrial insects, amphibians, reptiles, birds and mammals may be used. In addition, as the container 15 for protecting the container, for example, a rope using natural fibers or artificial fibers is used.

  Next, the use of the carnivorous fish capturing device of the present invention will be described. The enclosure net 1 is laid out by a worker on a boat and spreads on the bottom GL of a river or lake that is expected to inhabit carnivorous fish such as black bass and piranha. In the central area on the enclosing net 1 laid on the bottom GL of the river or lake, a live small fish serving as a bait for carnivorous fish such as black bass and piranha is put inside as a reed 15 A transparent and cylindrical capture container 5 containing a food container 14 for carnivorous fish surrounded by is installed.

  The capture container 5 is a flat wall of a cylindrical body having a bottom plate that forms the bottom and a transparent side wall, and at least one bell mouth type carnivorous fish guide cylinder 7 inside the flat wall, Desirably, a plurality are provided. The carnivorous fish bait container 14 can be visually recognized from the outside, and water penetrates. Therefore, carnivorous fish such as black bass and piranhas are accommodated in the carnivorous fish bait container 14 and swim. Swim around a transparent cylindrical capture container 5 provided with a plurality of bell-mouth type guide cylinders 7 to detect the presence of small fish that become traps by smell and vision, and to eat the small trap fish While approaching.

  The bait container 14 for carnivorous fish is installed in the capture space 10 of the transparent cylindrical capture container 5 provided with a plurality of bellmouth type guide cylinders 7, so that a black bass or piranha is used. The carnivorous fish swam around the outer periphery of the capture container 5 in an attempt to eat small fish in the food container 14 for carnivorous fish, and of these, provided on the plane side wall of the side wall surface 6 of the capture container 5. The bell mouth type guide cylinder 7 enters the capture space 10 of the transparent cylindrical capture container 5 through the outer opening of the wide mouth portion 8 through the guide cylinder of the bell mouth type guide cylinder 7. However, live small fish that serve as carp for carnivorous fish are housed and protected in a carnivorous fish bait container 14 that is a transparent cylindrical body made of resin with many small holes in the side wall. It is not eaten by carnivorous fish.

  For the purpose of raising the entrapment nets provided at appropriate intervals on the outer periphery of the enclosing net 1 for the purpose of entering the carnivorous fish such as black bass and piranha in the capture space 10 of the transparent cylindrical capture container 5 An operator on board the rope 3 pulls up the outer periphery of the enclosure net to the water surface WL and raises the outer periphery of the enclosure net 1 so that it is at the same height as the upper end of the transparent cylindrical capture container 5. A cylindrical catching vessel 5 is tied to a rope, and carnivorous fish such as black bass and piranha swimming between the raised enclosure net 1 and the transparent tubular catching vessel 5 are also tubular. Enclose with capture container 5. Next, the carnivorous fish bait container 14 of the net body 15 surrounding the carnivorous fish bait container 14 accommodated in the cylindrical capture container 5 is pulled by the rope 16 for pulling out the carnivorous fish bait container. The fish bait container 14 is pulled up and accommodated on a take-out boat, and transferred to a separate container in which the small fish that has become a cage in the carnivorous fish bait container 14 is prepared.

  After that, the rope that was attached by tying the enclosure net 1 and the cylindrical capture container 5 is unwound and the cylindrical capture container 5 is accommodated on the boat and transported to the shore together with the boat. The carnivorous fish such as black bass and piranha that had entered the capture space 10 of the container 5 were captured in a separate container that had been prepared and carnivorous such as black bass and piranha that had been captured in the enclosure 1 I also catch fish.

It is a longitudinal cross-sectional view which shows the arrangement | positioning relationship of the carnivorous fish capture apparatus of this invention. It is a plane | planar arrangement | positioning figure which shows the arrangement | positioning relationship of the carnivorous fish capture apparatus of this invention. It is a perspective view of the container for capture which is an example of the carnivorous fish capturing device of the present invention. It is a perspective view of the bellmouth type induction cylinder attached to the capture container of the carnivorous fish capturing apparatus of the present invention. It is a perspective view of the container for capture which is other examples of the carnivorous fish capturing device of the present invention. It is a skeleton elevation view of a conventional black bass capture reef.

Explanation of symbols

1 Enclosure net 2 Mounting ring 3 Lifting rope 4 Floating ball,
DESCRIPTION OF SYMBOLS 5 Cylindrical capture container 6 Side wall surface 7 Bellmouth type induction | guidance | derivation cylinder 8 Wide opening part 9 Narrow opening part 10 Capturing space 11 Bottom plate 12 Rope for lifting and taking out 13 Floating ball 14 Bait container 15 for carnivorous fish Body 16 Rope for pulling up and lifting 17 Floating ball

Claims (5)

  A cylindrical shape in which one side wall surface of a cylindrical body having a bottom plate and a transparent peripheral wall is a flat wall, and at least one guide cylinder for guiding carnivorous fish is provided inside the flat wall. A body-capturing container, and a container for bait for carnivorous fish that forms a tubular body that is made of a material that is disposed inside the capturing container and that can be seen through and that can circulate water. Carnivorous fish capture device characterized by that.   The carnivorous according to claim 1, further comprising: a net that surrounds the outer periphery of the container; and a floating ball that is attached to the upper area of the net and the catching container via a rope. Fish capture device.   2. The carnivorous fish capturing apparatus according to claim 1, wherein the tubular body capturing container is a tubular body having a polygonal cross section.   2. The carnivorous fish capturing apparatus according to claim 1, wherein the cylindrical body capturing container is a semi-cylindrical body having a planar wall on one side wall surface of the cylindrical body.   Capturing a tubular body in which an enclosure net is laid on the bottom of rivers and lakes, and at least one guide cylinder for guiding carnivorous fish is provided on the side wall in the central area of the laid enclosure net A container for standing fish, and a container for carnivorous fish food in the transparent cylindrical capture container set up in a standing manner, and an appropriate number of carnivores in the transparent cylindrical capture container. When the fish enters, pull up the rope of the enclosure net to enclose the transparent cylindrical capture container, and then put the container that contains the food for carnivorous fish from the transparent cylindrical capture container A method for capturing carnivorous fish, characterized by pulling up with a rope, and then pulling up an enclosing net surrounding a container for capturing a transparent cylindrical body to capture carnivorous fish.

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