CN115176770A - Selective fishing cage experimental device and experimental method thereof - Google Patents
Selective fishing cage experimental device and experimental method thereof Download PDFInfo
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- CN115176770A CN115176770A CN202210767115.8A CN202210767115A CN115176770A CN 115176770 A CN115176770 A CN 115176770A CN 202210767115 A CN202210767115 A CN 202210767115A CN 115176770 A CN115176770 A CN 115176770A
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- 238000002474 experimental method Methods 0.000 title abstract description 10
- 230000006698 induction Effects 0.000 claims abstract description 23
- 239000000725 suspension Substances 0.000 claims abstract description 19
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 4
- 239000010959 steel Substances 0.000 claims abstract description 4
- 238000009941 weaving Methods 0.000 claims abstract description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 12
- 238000009500 colour coating Methods 0.000 claims description 9
- 229910000971 Silver steel Inorganic materials 0.000 claims description 3
- 229910052751 metal Inorganic materials 0.000 claims description 3
- 239000002184 metal Substances 0.000 claims description 3
- 238000011835 investigation Methods 0.000 abstract description 5
- 238000013461 design Methods 0.000 abstract description 3
- 230000003945 visual behavior Effects 0.000 abstract description 3
- 241000894007 species Species 0.000 description 8
- 241000238557 Decapoda Species 0.000 description 5
- 241001465754 Metazoa Species 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 3
- 241000251468 Actinopterygii Species 0.000 description 2
- 230000006399 behavior Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000004083 survival effect Effects 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 230000000007 visual effect Effects 0.000 description 2
- 241000238366 Cephalopoda Species 0.000 description 1
- 241001125840 Coryphaenidae Species 0.000 description 1
- 241000238147 Portunidae Species 0.000 description 1
- 241000238371 Sepiidae Species 0.000 description 1
- 235000013305 food Nutrition 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01K—ANIMAL HUSBANDRY; AVICULTURE; APICULTURE; PISCICULTURE; FISHING; REARING OR BREEDING ANIMALS, NOT OTHERWISE PROVIDED FOR; NEW BREEDS OF ANIMALS
- A01K69/00—Stationary catching devices
- A01K69/06—Traps
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A40/00—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production
- Y02A40/80—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production in fisheries management
- Y02A40/81—Aquaculture, e.g. of fish
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- Biodiversity & Conservation Biology (AREA)
Abstract
The invention discloses a selective fishing cage experimental device and an experimental method thereof. A selective fishing cage experimental device comprises a fishing cage, wherein the fishing cage is a cubic box body formed by weaving black steel wire meshes, the cubic box body comprises a net cage with an opening at the upper end and a box cover, and the net cage is detachably connected with the box cover; the lower end of the net cage is provided with an induction inlet, and the top of the induction inlet is hinged with suspension rods which are arranged from left to right; an outlet is formed in the right side of the net cage, an arc-shaped net piece is connected to the periphery of the outlet, and the arc-shaped net piece is connected with the outlet of the net cage to form an escape opening with an upper opening and a lower opening. The invention can adjust the size and the color of the opening of the escape opening according to the type and the specification of the project investigation object for design, and further carry out the color-distinguishing visual behavior experiment of aquatic organisms.
Description
Technical Field
The invention relates to the field of aquatic product auxiliary tools, in particular to a fishing experimental device and an experimental method thereof.
Background
The occasional capture and death of non-target marine animals during fishing, called concurrent capture, is one of the major threats facing the diversity of marine life worldwide. In marine ecosystems, marine organisms are coupled through food chains and ecosites to form a specific set of biotenomes. In the industrial fishing industry, a specific species is usually used as a fishing target, but other animals are attracted by a bait or a target catching object during industrial fishing, so that the animals are hooked by fishing gear, or cannot be caught or wound in the fishing gear at all. According to incomplete statistics, at least 730 million tons of marine organisms are accidentally captured each year. In some fisheries, the specific gravity of the combined catch far exceeds the target catch, e.g. about 80% of the combined catch in the gulf of mexico, shrimp tugboat catches. One of the most widely known cases of doubling-up occurs in the 1970 s when thousands of dolphins died in the pacific tuna seine. The fishing and catching also causes serious loss to fishermen, and the non-target fishing easily causes damage to fishing gear, reduction of the fishing amount and fishing limitation, thus threatening economic survival of fishermen.
Although multi-level fishery management has attempted or implemented solutions to mis-catch, double catch non-target species, the double catch phenomenon remains a common problem in all fisheries and all oceans. There are two broad categories of traditional solutions: one is to reduce or direct fishing away from conflicting hot spots between fishing operations and non-target animals; another is to revolutionize fishing technology and methods to a level that reduces the double catch to a level that no longer poses a threat to the survival of non-target species.
The cage pot type fishing gear is a special tool which is provided with a cave-shaped object or a cage according to the habit of a caught object and used for luring the caught object to enter and be caught. The cage has the advantages of simple structure, convenient operation, wide distribution, low fishing gear cost, fresh and alive fish catches and the like, and is a small fishing gear which is suitable for the rotation of the coastal fishing industry and the operation or the subsidiary production. In particular, the cage is an optimum operation mode in a sea area with large topographic relief, such as a bottom trawl and a bottom line fishing, which is difficult to operate. The fishing objects of the cage-pot fishing gear comprise fishes, shrimps, crabs, cephalopods and the like, such as lobsters, empire crabs, swimming crabs, cuttlefish and the like with high economic value. The target species caught by the cage-pot type fishing gear mostly mainly comprises benthonic organisms, so the cage-pot type fishing gear can also be used as an investigation tool for benthonic fishery resources. The phenomenon of mistaken catching and catching also exists in the cage-pot type fishing gear, and the phenomenon of the mistaken catching and catching is mainly small-sized target species and mistaken-catching non-target species. Therefore, it is important to reduce the double-catching phenomenon of the pitcher type fishing gear in fishery production and fishery resource scientific investigation, and designing the pitcher type fishing gear suitable for production and scientific research based on the habit of the fishing object can play an important role in protecting fishery resources from unnecessary loss.
Disclosure of Invention
Aiming at the problems in the prior art, the invention provides a selective fishing cage experimental device, which solves at least one technical problem.
The invention provides an experimental method of a selective fishing cage experimental device, which solves at least one technical problem.
The technical scheme of the invention is as follows: a selective fishing cage experimental device comprises a fishing cage and is characterized in that the fishing cage is a cubic box body formed by weaving black steel wire meshes, the cubic box body comprises a net cage with an opening at the upper end and a box cover, and the net cage and the box cover are detachably connected;
the lower end of the net cage is provided with an induction inlet, and the top of the induction inlet is hinged with suspension rods which are distributed from left to right;
an outlet is formed in the right side of the net cage, an arc-shaped net piece is connected to the periphery of the outlet, and the arc-shaped net piece and the outlet of the net cage are connected to form an escape opening with an upper opening and a lower opening.
The invention can adjust the size and the color of the opening of the escape opening according to the type and the specification of the project investigation object for design, and further carry out the color-distinguishing visual behavior experiment of aquatic organisms.
Further preferably, the arc-shaped net sheets are detachably connected with the net cage;
the arc-shaped net piece is coated with a color coating.
The arc-shaped net sheets along different edges can be conveniently replaced for fishing, and the vision behaviors of the biological identification can be known.
Further preferably, the color coatings are coated on two sides of the arc-shaped mesh sheet, and the color coatings on the two sides of the arc-shaped mesh sheet are different in color.
The two sides of the arc-shaped net piece can be overturned conveniently, and different visual tests can be realized.
Further preferably, the suspension rod is a silver steel wire.
Further preferably, cameras are mounted at the upper end and the lower end of the escape opening.
The biology escaping from the escape opening can be conveniently recorded.
Further preferably, a camera is installed inside the induction inlet.
Facilitating the recording of the organisms induced into.
Further preferably, the induction inlet is located at the lower end part of the front side of the net cage, and the induction inlet is a rectangular window;
a ring body formed by connecting metal wires end to end in a surrounding manner is welded and fixed at the top of the suspension rod;
the ring body is sleeved on the upper edge of the induction inlet;
the lower end of the suspension rod is positioned in the net cage.
The suspension rod can only tilt inwards to the net cage to form a one-way fence inlet.
Further preferably, the front side of the net cage is a front side net piece formed by connecting and enclosing transverse wires and longitudinal wires;
each ring body is sleeved in the mesh hole of the front side mesh.
The mobility of the suspension rod can be conveniently controlled through the size of the mesh.
Preferably, the rear ends of the net cage and the box cover are hinged through a hinge, and a lanyard ring is fixed at each of the left end and the right end of the hinge;
the rope opening and closing device comprises a hinge and a rope opening and closing lock, wherein the hinge is provided with a left end and a right end, the left end is provided with a rope body, the right end is provided with a rope body, and the rope body is connected with the rope body;
the box body is connected with a clamping piece for clamping the lock catch.
The opening and closing of the net cage are convenient to realize.
An experimental method of a selective catching cage pot experimental device is characterized by comprising the following steps:
adjusting the color and the size of the arc-shaped net piece, and further adjusting the color and the size of an escape opening;
placing the water body in the water body, taking out the catching cage after a certain time interval, opening the cover body, and recording the biological varieties and the number caught in the catching cage;
step three, adjusting the number of the suspension rods and adjusting the distance between the fences of the induction inlets;
step four, placing the water body in the water body, taking out the fishing cage after a certain time interval, opening the cover body, and recording the biological species and the number of the biological species caught in the fishing cage;
and repeating the first step to the fourth step.
Drawings
FIG. 1 is a schematic structural diagram of embodiment 1 of the present invention;
fig. 2 is a schematic diagram of embodiment 1 of the present invention.
In the figure: 1 is an induction inlet, 2 is an arc-shaped net piece, 3 is an escape opening, 4 is a ring body, 5 is a hanging rod, 6 is a lock catch, and 7 is a rope body.
Detailed Description
The invention is further described below with reference to the accompanying drawings.
Referring to fig. 1 and 2, in embodiment 1, the selective fishing cage experimental device comprises a fishing cage, wherein the fishing cage is a cubic box body woven by black steel wire mesh sheets, the cubic box body comprises a net cage with an opening at the upper end and a box cover, and the net cage is detachably connected with the box cover; the lower end of the net cage is provided with an induction inlet 1, and the top of the induction inlet 1 is hinged with suspension rods 5 which are arranged from left to right; an outlet is formed in the right side of the net cage, an arc-shaped net piece 2 is connected to the periphery of the outlet, and the arc-shaped net piece 2 and the outlet of the net cage are connected to form an escape opening 3 with an upper opening and a lower opening. The invention can adjust the size and the color of the opening of the escape opening 3 according to the type specification of the project investigation object for design, and further carry out the color-distinguishing visual behavior experiment of aquatic organisms.
The arc net piece 2 is detachably connected with the net cage; the arc-shaped net piece 2 is coated with a color coating. The arc-shaped net pieces 2 along different edges can be conveniently replaced for fishing, and the vision behaviors of the biological identification can be known.
Color coatings are coated on two sides of the arc-shaped net piece 2, and the color coatings on the two sides of the arc-shaped net piece 2 are different in color. The overturning of the two sides of the arc-shaped net piece 2 is convenient to realize, and different visual tests are realized.
The hanger bar 5 is a silver steel wire.
Cameras are arranged at the upper end and the lower end of the escape opening 3. Facilitating the recording of the organisms escaping from the escape opening 3. A camera is installed inside the induction inlet 1. Facilitating the recording of the organisms induced into.
The induction inlet 1 is positioned at the lower end part of the front side of the net cage, and the induction inlet 1 is a rectangular window; a ring body 4 formed by connecting metal wires end to end in a surrounding manner is welded and fixed at the top of the suspension rod 5; the ring body 4 is sleeved on the upper edge of the induction inlet 1; the lower end of the suspension rod 5 is positioned in the net cage. The suspension rod 5 can only tilt inwards to form a one-way fence inlet.
The front side of the net cage is a front side net piece formed by connecting and enclosing transverse wires and longitudinal wires; each ring body 4 is sleeved in the mesh of the front side net piece. The mobility of the suspension rod 5 can be conveniently controlled by the size of the mesh.
The rear ends of the net cage and the box cover are hinged through a hinge, and the left end and the right end of the hinge are both fixed with a lashing ring; the rope opening and closing device further comprises an opening and closing rope lock, wherein the opening and closing rope lock comprises rope bodies 7 and lock catches 6, the lock catches 6 are connected with the two rope bodies 7, and the two rope bodies 7 are respectively connected with the lanyard rings at the left end and the right end of the hinge; the box body is connected with a clamping piece for clamping the lock catch 6. The opening and closing of the net cage are convenient to realize.
An experimental method of a selective catching cage pot experimental device is characterized by comprising the following steps:
firstly, adjusting the color and the size of the arc-shaped net piece 2, and further adjusting the color and the size of an escape opening 3;
placing the water body in the water body, taking out the catching cage after a certain time interval, opening the cover body, and recording the biological varieties and the number caught in the catching cage;
step three, adjusting the number of the suspension rods 5 and adjusting the distance between the fences of the induction inlets 1;
step four, placing the water body in the water body, taking out the catching cage after a certain time interval, opening the cover body, and recording the biological varieties and the number caught in the catching cage;
and repeating the first step to the fourth step.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that it is obvious to those skilled in the art that various modifications and improvements can be made without departing from the principle of the present invention, and these modifications and improvements should also be considered as the protection scope of the present invention.
Claims (10)
1. A selective fishing cage experimental device comprises a fishing cage and is characterized in that the fishing cage is a cubic box body formed by weaving black steel wire meshes, the cubic box body comprises a net cage with an opening at the upper end and a box cover, and the net cage and the box cover are detachably connected;
the lower end of the net cage is provided with an induction inlet, and the top of the induction inlet is hinged with suspension rods which are arranged from left to right;
an outlet is formed in the right side of the net cage, an arc-shaped net piece is connected to the periphery of the outlet, and the arc-shaped net piece and the outlet of the net cage are connected to form an escape opening with an upper opening and a lower opening.
2. The selective fishing cage experimental facility of claim 1, wherein: the arc-shaped net piece is detachably connected with the net cage;
the arc-shaped net piece is coated with a color coating.
3. The selective fishing cage experimental facility of claim 2, wherein: the color coatings are coated on two sides of the arc-shaped net piece, and the color coatings on the two sides of the arc-shaped net piece are different in color.
4. The selective fishing cage experimental facility of claim 1, wherein: the suspension rod is a silver steel wire.
5. The selective fishing cage experimental facility of claim 1, wherein: the upper end and the lower end of the escape opening are both provided with cameras.
6. The selective fishing cage experimental facility of claim 1, wherein: the inner side of the induction inlet is provided with a camera.
7. The selective fishing cage experimental facility of claim 1, wherein: the induction inlet is positioned at the lower end part of the front side of the net cage and is a rectangular window;
a ring body formed by connecting metal wires end to end in a surrounding manner is welded and fixed at the top of the suspension rod;
the ring body is sleeved on the upper edge of the induction inlet;
the lower end of the suspension rod is positioned in the net cage.
8. The selective fishing cage experimental facility of claim 7, wherein: the front side of the net cage is a front side net piece formed by connecting and enclosing transverse wires and longitudinal wires;
each ring body is sleeved in the mesh hole of the front side mesh.
9. The selective fishing cage experimental facility of claim 1, wherein: the rear ends of the net cage and the box cover are hinged through a hinge, and a lashing ring is fixed at each of the left end and the right end of the hinge;
the rope opening and closing device comprises a hinge and a rope opening and closing lock, wherein the hinge is provided with a left end and a right end, the left end is provided with a rope body, the right end is provided with a rope body, and the rope body is connected with the rope body;
the box body is connected with a clamping piece for clamping the lock catch.
10. The selective catching cage pot experimental facility as claimed in any one of claims 1 to 9, comprising the steps of:
adjusting the color and the size of the arc-shaped net piece, and further adjusting the color and the size of an escape opening;
placing the water body in the water body, taking out the catching cage after a certain time interval, opening the cover body, and recording the biological varieties and the number caught in the catching cage;
step three, adjusting the number of the suspension rods and adjusting the distance between the fences of the induction inlets;
step four, placing the water body in the water body, taking out the fishing cage after a certain time interval, opening the cover body, and recording the biological species and the number of the biological species caught in the fishing cage;
and repeating the first step to the fourth step.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210767115.8A CN115176770B (en) | 2022-07-01 | 2022-07-01 | Experimental device and experimental method for selectively fishing fish cage |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210767115.8A CN115176770B (en) | 2022-07-01 | 2022-07-01 | Experimental device and experimental method for selectively fishing fish cage |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN115176770A true CN115176770A (en) | 2022-10-14 |
| CN115176770B CN115176770B (en) | 2023-06-13 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210767115.8A Active CN115176770B (en) | 2022-07-01 | 2022-07-01 | Experimental device and experimental method for selectively fishing fish cage |
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| Country | Link |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6990765B1 (en) * | 2002-11-21 | 2006-01-31 | Joseph Beech | Floating bait container |
| CN103210886A (en) * | 2013-03-04 | 2013-07-24 | 张连春 | Automatic ascending and descending combined type stationary fishing net tool |
| CN204722072U (en) * | 2015-05-21 | 2015-10-28 | 上海海洋大学 | Dwell crustacean trapping instrument in a kind of novel end |
| CN106577563A (en) * | 2016-11-17 | 2017-04-26 | 中国水产科学研究院南海水产研究所 | Lossless catching method for wild rabbitfish siganus oramin |
| KR102314427B1 (en) * | 2021-06-08 | 2021-10-18 | 임우근 | fish trap for fishing |
-
2022
- 2022-07-01 CN CN202210767115.8A patent/CN115176770B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6990765B1 (en) * | 2002-11-21 | 2006-01-31 | Joseph Beech | Floating bait container |
| CN103210886A (en) * | 2013-03-04 | 2013-07-24 | 张连春 | Automatic ascending and descending combined type stationary fishing net tool |
| CN204722072U (en) * | 2015-05-21 | 2015-10-28 | 上海海洋大学 | Dwell crustacean trapping instrument in a kind of novel end |
| CN106577563A (en) * | 2016-11-17 | 2017-04-26 | 中国水产科学研究院南海水产研究所 | Lossless catching method for wild rabbitfish siganus oramin |
| KR102314427B1 (en) * | 2021-06-08 | 2021-10-18 | 임우근 | fish trap for fishing |
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| Publication number | Publication date |
|---|---|
| CN115176770B (en) | 2023-06-13 |
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