CN115362995A - Net-opening net bag capable of effectively reducing proportion of juvenile fish and juvenile shrimp - Google Patents
Net-opening net bag capable of effectively reducing proportion of juvenile fish and juvenile shrimp Download PDFInfo
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- CN115362995A CN115362995A CN202211016285.9A CN202211016285A CN115362995A CN 115362995 A CN115362995 A CN 115362995A CN 202211016285 A CN202211016285 A CN 202211016285A CN 115362995 A CN115362995 A CN 115362995A
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- net bag
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- mesh
- bag
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- 241000251468 Actinopterygii Species 0.000 title claims abstract description 40
- 230000000366 juvenile effect Effects 0.000 title claims abstract description 21
- 241000238557 Decapoda Species 0.000 title claims description 8
- 241000143060 Americamysis bahia Species 0.000 claims abstract description 30
- 238000000926 separation method Methods 0.000 claims abstract description 20
- 229910003460 diamond Inorganic materials 0.000 claims description 16
- 239000010432 diamond Substances 0.000 claims description 16
- QNRATNLHPGXHMA-XZHTYLCXSA-N (r)-(6-ethoxyquinolin-4-yl)-[(2s,4s,5r)-5-ethyl-1-azabicyclo[2.2.2]octan-2-yl]methanol;hydrochloride Chemical compound Cl.C([C@H]([C@H](C1)CC)C2)CN1[C@@H]2[C@H](O)C1=CC=NC2=CC=C(OCC)C=C21 QNRATNLHPGXHMA-XZHTYLCXSA-N 0.000 claims description 9
- 239000004698 Polyethylene Substances 0.000 claims description 8
- -1 polyethylene Polymers 0.000 claims description 8
- 229920000573 polyethylene Polymers 0.000 claims description 8
- 239000012943 hotmelt Substances 0.000 claims description 3
- 238000007493 shaping process Methods 0.000 claims description 2
- 210000001503 joint Anatomy 0.000 claims 1
- 230000000694 effects Effects 0.000 description 5
- 229910000831 Steel Inorganic materials 0.000 description 4
- 239000010959 steel Substances 0.000 description 4
- 230000008859 change Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 241000269978 Pleuronectiformes Species 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 238000009395 breeding Methods 0.000 description 1
- 230000001488 breeding effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000009189 diving Effects 0.000 description 1
- 230000005012 migration Effects 0.000 description 1
- 238000013508 migration Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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Classifications
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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
- A01K74/00—Other catching nets or the like
-
- 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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- Life Sciences & Earth Sciences (AREA)
- Environmental Sciences (AREA)
- Animal Husbandry (AREA)
- Biodiversity & Conservation Biology (AREA)
Abstract
The invention discloses a net expanding sac capable of effectively reducing the proportion of juvenile fishes and juvenile shrimps, which comprises a cylindrical main net sac, wherein the front end of the main net sac is an open end, and the main net sac comprises a front upper net sac, a front lower net sac and a tail net sac; the net-opening net bag is also provided with a circular table frame, the circular table frame comprises a vertically arranged circular opening end framework, a vertically arranged circular tail end framework and a connecting framework for connecting the opening end framework and the tail end framework, and the circular table frame is embedded in the main net bag; a tail end mesh is tensioned in the central area of the tail end framework; the circular platform frame is provided with a separation net sheet in a stretched mode in the central area of the horizontal central plane, the separation net sheet is horizontally arranged, and the mesh number of the separation net sheet is gradually reduced from the open end framework to the tail end framework. The net bag can not only realize the escape of small individual fishes and shrimps, but also ensure that the yield of other economic fisheries is not lost.
Description
Technical Field
The invention relates to an aquatic product fishing device, in particular to a net-opening net bag capable of effectively reducing the proportion of juvenile fishes and juvenile shrimps.
Background
The net is mainly laid on the breeding place and migration channel of fishes and shrimps, and belongs to a passive fishing gear. Due to small mesh size and poor selectivity, the problems of catching and discarding the juvenile fishes and shrimps are very serious.
At present, over 10 countries have compelled to use selective devices such as separation grids in trawl fishery abroad, but the knowledge of subsidiary fishery objects in China is insufficient, the research and development and the use of the selective devices are very limited, and the selective devices are mostly used in trawl fishery and few in trawl fishery. The trawl is operated in the sea by towing netting gear by a fishing boat, and belongs to an active fishing gear. In the actual operation process, the flow rate and the flow direction of the open net fishery are changeable, so that the rotation of the net bag can be caused when the selective device of most trawls is used in the open net fishery, and the effect is lost.
Therefore, aiming at the operation of the net-stretching fishing gear, the development of the net bag which has high selectivity and can effectively reduce the proportion of juvenile fish is urgent.
Disclosure of Invention
The invention aims to provide a net bag capable of effectively reducing the proportion of juvenile fishes and juvenile shrimps, which not only can realize the escape of small individual fishes and shrimps, but also can ensure that the yield of other economic fisheries is not lost.
The above object of the present invention is achieved by the following technical solutions: the utility model provides an effectively reduce net bag of opening of juvenile fish juvenile shrimp proportion, includes columniform major network bag, the front end of major network bag is the open end, its characterized in that: the main net bag comprises a front upper net bag which is positioned above the front part of the net bag and is provided with a square net mesh, a front lower net bag which is positioned below the front part of the net bag and is provided with a diamond net mesh, and a tail net bag which is positioned at the tail part of the net bag and is provided with a diamond net mesh on the side surface; the net-opening net bag is also provided with a circular platform frame, the circular platform frame comprises a vertically arranged circular ring-shaped opening end framework, a vertically arranged circular ring-shaped tail end framework and a connecting framework for connecting the opening end framework and the tail end framework, the circular area surrounded by the opening end framework is larger than that surrounded by the tail end framework, the circular platform frame is embedded in the main net bag, and the opening end framework of the installed circular platform frame is positioned at the opening of the main net bag; a tail mesh is tensioned in the central area of the tail framework; the circular platform frame is provided with a separation net sheet in a stretched mode in the central area of the horizontal central plane, the separation net sheet is horizontally arranged, and the mesh number of the separation net sheet is gradually reduced from the open end framework to the tail end framework.
In the operation in-process of opening the net, fish and shrimp that get into the major network bag through the fishing net shaft move to net bag afterbody under the rivers effect gradually, and the separation net piece that the level set up can produce slight shake under the rivers effect to arouse rivers to change.
When the shrimps feel the change of water flow, behavior habit of upward bouncing can be generated, the shrimps enter the upper part of the circular truncated cone, part of the shrimps continuously move backwards along the square meshes on the upper part of the mesh bag, and then the small individual shrimps can escape from the square meshes, and part of the shrimps continuously move backwards along the separation mesh sheet, contact the tail end mesh sheet, or continuously move backwards along one side of the square meshes, or return flow moves towards the direction of the net body along one side of the square meshes, and can contact the square mesh bag to the maximum extent, so that the small individual shrimps can escape.
When the fishes feel the change of water flow, most fishes can generate a diving behavior habit and enter the lower part of the circular truncated cone, part of the fishes move backwards along the rhombic meshes at the lower part of the net bag, and then small individual fishes can escape from the rhombic meshes, part of the fishes continue to move backwards along one side of the separation net sheet and contact the tail end net sheet, or continue to move backwards along one side of the rhombic meshes, or return flow moves towards the net body along the rhombic meshes, and the fishes can contact the rhombic meshes of the rhombic meshes to the maximum extent, so that the small individual fishes escape is realized.
In the invention, the main net bag also comprises inhaul cables positioned at the upper part and the lower part of the net bag, wherein the inhaul cables are polyethylene ropes, the diameter of each inhaul cable is 6mm, and the length of each inhaul cable is 1.5m.
In the invention, the number of transverse meshes of the square meshes of the front upper net bag is 100 meshes, the number of longitudinal meshes is 216 meshes, and the mesh size is 25mm.
In the invention, the diamond mesh of the mesh bag at the front lower part has the transverse mesh number of 43 meshes, the transverse shrinkage coefficient of 0.837, the longitudinal mesh number of 141 meshes and the mesh size of 35mm.
In the invention, the transverse mesh number of the rhombic mesh of the tail net bag is 214 meshes, the transverse shrinkage coefficient is 0.40, the longitudinal mesh number is 29 meshes, and the mesh size is 35mm.
In the invention, the tail net bag, the front upper net bag and the front lower net bag are butted and bound by adopting a polyethylene rope, and the diameter of the polyethylene rope is 16mm.
In the invention, the open-end framework and the tail-end framework are both made of PPR pipes with the diameter of 20mm, wherein the diameter of a circle surrounded by the open-end framework is 0.8m, the diameter of a circle surrounded by the tail-end framework is 0.7m, the distance between the central point of the open-end framework and the central point of the tail-end framework is 1m, the connecting frameworks are three PPR pipes with the diameter of 10mm, the three connecting frameworks are uniformly arranged, and two ends of the three connecting frameworks are respectively fixedly connected with the open-end framework and the tail-end framework through hot melt molding.
The invention can be improved as follows: an annular steel cable with the diameter of 6mm is further arranged outside the open end framework, and the annular steel cable is fixedly tied up with the open end framework, the connecting framework and the open end of the main net bag through ropes.
In the invention, the tail end mesh is a circular mesh, the tail end mesh has diamond meshes, the number of transverse meshes at the maximum center of the tail end mesh is 194 meshes, the mesh size is 15mm, and the transverse shrinkage coefficient is 0.2-0.3 during assembly.
In the invention, the separation net sheet has diamond meshes, the number of transverse meshes at the framework at the opening end is 133 meshes, the number of transverse meshes at the framework at the tail end is 117 meshes, the number of longitudinal meshes is 41 meshes, the mesh size is 25mm, and the transverse shrinkage coefficient is 0.2-0.3 during assembly.
Compared with the prior art, the net bag with the stretched net is characterized in that the circular truncated cone frame communicated with the upper front net bag and the lower front net bag of the main net bag is additionally arranged, the fishes and the shrimps are respectively separated into the corresponding net bags by utilizing the behavior difference of the shrimps and the fishes before separating the net sheets, the square net bag has a good escape effect on the shrimps, the rhombic net bag has a good escape effect on the side flat fishes, the fishes and the shrimps can be ensured to contact the corresponding net bags to the maximum extent, the escape of small individual fishes and shrimps can be realized, and the yield of other economic fisheries can be ensured not to be lost.
Therefore, the net-expanding sac of the invention can separate fish and shrimps in the net and improve escape of juvenile fish and juvenile shrimps, thereby effectively solving the problems of poor net-expanding selectivity and high juvenile fish proportion.
Drawings
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
FIG. 1 is a schematic view showing the overall structure of a net bag according to the present invention for effectively reducing the ratio of young fishes and shrimps;
FIG. 2 is a schematic cross-sectional view of a stretched mesh sac according to the present invention effective in reducing the proportion of juvenile fish and shrimp, showing the location of the separator mesh;
fig. 3 is a side view of a circular table frame in a net-expanding sac of the present invention effective in reducing the proportion of juvenile fish and shrimp.
Description of the reference numerals
1. A main network bag; 11. A front upper net bag; 12. A mesh bag at the front lower part; 13. A tail mesh sac;
2. a round table frame; 21. An open-end framework; 22. A tail end skeleton; 23. Connecting the framework;
3. a cable; 4. A tail mesh sheet; 5. Separating the mesh sheet; 6. A fishing net body.
Detailed Description
The net-expanding sac capable of effectively reducing the proportion of young fishes and shrimps comprises a cylindrical main sac 1, wherein the front end of the main sac 1 is an open end, the open end of the main sac 1 is connected with a fishing net body 6, the main sac 1 comprises a front upper sac 11 with a square net mesh and positioned above the front part of the net sac, a front lower sac 12 with a diamond net mesh and positioned below the front part of the net sac, and a tail sac 13 with a diamond net mesh and positioned on the side surface of the tail part of the net sac; the net-opening net bag is also provided with a circular table frame 2, the circular table frame 2 comprises a vertically arranged circular ring-shaped opening end framework 21, a vertically arranged circular ring-shaped tail end framework 22 and a connecting framework 23 for connecting the opening end framework 21 and the tail end framework 22, the circular area surrounded by the opening end framework 21 is larger than the circular area surrounded by the tail end framework 22, the circular table frame 2 is embedded and installed in the main net bag 1, and the opening end framework 21 of the installed circular table frame 2 is positioned at the opening of the main net bag 1; the tail end framework 22 is stretched with a tail end net sheet 4 in the central area through a rope; the circular platform frame 2 is provided with a separation net piece 5 in the central area of the horizontal central plane through stretching by a rope, the separation net piece 5 is horizontally arranged, and the mesh number of the separation net piece 5 is gradually reduced from the open end framework 21 to the tail end framework 22. The separation net 5 is perpendicular to the plane of the open end frame 21 and the tail end frame 22, and is also perpendicular to the tail end net 4.
In this embodiment, major network bag 1 still includes cable 3 that is located net bag upper portion and lower part, and cable 3 is the polyethylene rope, and diameter 6mm, long 1.5m.
The square mesh of the front upper net bag 11 has a transverse mesh number of 100 meshes, a longitudinal mesh number of 216 meshes and a mesh size of 25mm.
The diamond mesh of the front lower net bag 12 has a transverse mesh number of 43 meshes, a transverse shrinkage factor of 0.837, a longitudinal mesh number of 141 meshes and a mesh size of 35mm.
The tail net bag 13 has a diamond net with a transverse mesh number of 214 meshes, a transverse shrinkage factor of 0.40, a longitudinal mesh number of 29 meshes and a mesh size of 35mm.
In this embodiment, the tail pocket 13, the upper front pocket 11 and the lower front pocket 12 are tied up by a polyethylene rope having a diameter of 16mm.
In this embodiment, open end skeleton 21 and tail end skeleton 22 all adopt the diameter to make for 20 mm's PPR pipe, wherein, the circle diameter that open end skeleton 21 encloses is 0.8m, the circle diameter that tail end skeleton 22 encloses is 0.7m, the distance between the central point of open end skeleton 21 and the central point of tail end skeleton 22 is 1m, it is 10 mm's PPR pipe that three diameters are connected skeleton 23, three connection skeleton 23 evenly set up, three connection skeleton 23's both ends respectively with open end skeleton 21 and tail end skeleton 22 through hot melt shaping fixed connection. Since the size of the open-end bobbin 21 is larger than that of the tail-end bobbin 22, the three connecting bobbins 23 are all obliquely arranged.
An annular steel cable with the diameter of 6mm is arranged outside the open end framework 21, and the annular steel cable, the open end framework 21, the connecting framework 23 and the open end of the main net bag 1 are fixedly tied up through ropes.
In this embodiment, the tail mesh 4 is a circular mesh, the tail mesh 4 has a diamond mesh, the number of transverse meshes at the maximum center of the tail mesh is 194 meshes, the mesh size is 15mm, the transverse shrinkage factor during assembly is 0.24, and the transverse shrinkage factor can also be a value within a range of 0.2 to 0.3.
The separation net sheet 5 has diamond meshes, the number of transverse meshes at the open end skeleton is 133 meshes, the number of transverse meshes at the tail end skeleton is 117 meshes, the number of longitudinal meshes is 41 meshes, the mesh size is 25mm, the transverse shrinkage coefficient is 0.24 during assembly, and the transverse shrinkage coefficient can also be within the range of 0.2-0.3.
The above-described embodiments of the present invention are not intended to limit the scope of the present invention, and the embodiments of the present invention are not limited thereto, and various other modifications, substitutions and alterations can be made to the above-described structure of the present invention without departing from the basic technical concept of the present invention as described above, according to the common technical knowledge and conventional means in the field of the present invention.
Claims (10)
1. The utility model provides an effective net bag of opening that reduces juvenile fish shrimp proportion, includes columniform major network bag (1), the front end of major network bag (1) is the open end, its characterized in that: the main net bag (1) comprises a front upper net bag (11) which is positioned above the front part of the net bag and is provided with a square mesh, a front lower net bag (12) which is positioned below the front part of the net bag and is provided with a diamond mesh, and a tail net bag (13) which is positioned at the tail part of the net bag and is provided with a diamond mesh on the side surface; the net-opening net bag is further provided with a circular table frame (2), the circular table frame (2) comprises a vertically arranged circular ring-shaped opening end framework (21), a vertically arranged circular ring-shaped tail end framework (22) and a connecting framework (23) for connecting the opening end framework (21) and the tail end framework (22), the circular area surrounded by the opening end framework (21) is larger than the circular area surrounded by the tail end framework (22), the circular table frame (2) is embedded in the main net bag (1), and the opening end framework (21) of the installed circular table frame (2) is positioned at the opening of the main net bag (1); a tail end mesh (4) is stretched in the central area of the tail end framework (22); the circular table frame (2) is stretched with a separation net sheet (5) in the central area of the horizontal central plane, the separation net sheet (5) is horizontally arranged, and the mesh number of the separation net sheet (5) is gradually reduced from the opening end framework (21) to the tail end framework (22).
2. A tensegrity net bag for effectively reducing the proportion of young fishes and shrimps according to claim 1, which is characterized in that: major network bag (1) is still including cable (3) that are located net bag upper portion and lower part, cable (3) are polyethylene rope, diameter 6mm, long 1.5m.
3. A tensegrity net bag for effectively reducing the proportion of young fishes and shrimps according to claim 1, which is characterized in that: the transverse mesh number of the square mesh of the front upper net bag (11) is 100 meshes, the longitudinal mesh number is 216 meshes, and the mesh size is 25mm.
4. A tensegrity net bag for effectively reducing the proportion of young fishes and shrimps according to claim 1, which is characterized in that: the diamond mesh of the front lower net bag (12) has the transverse mesh number of 43 meshes, the transverse shrinkage factor of 0.837, the longitudinal mesh number of 141 meshes and the mesh size of 35mm.
5. A tensegrity net bag for effectively reducing the proportion of young fishes and shrimps according to claim 1, which is characterized in that: the transverse mesh number of the rhombic mesh of the tail net bag (13) is 214 meshes, the transverse shrinkage factor is 0.40, the longitudinal mesh number is 29 meshes, and the mesh size is 35mm.
6. A tensegrity net bag for effectively reducing the proportion of young fishes and shrimps according to claim 1, which is characterized in that: the tail net bag (13), the front upper net bag (11) and the front lower net bag (12) are in butt joint and bound through polyethylene ropes, and the diameter of each polyethylene rope is 16mm.
7. A tensegrity net bag for reducing the proportion of young fishes and shrimps according to any one of claims 1 to 6, wherein: open end skeleton (21) and tail end skeleton (22) all adopt the diameter to make for 20 mm's PPR pipe, and wherein, the circle diameter that open end skeleton (21) enclosed is 0.8m, and the circle diameter that tail end skeleton (22) enclosed is 0.7m, and the distance between the central point of open end skeleton (21) and the central point of tail end skeleton (22) is 1m, connect skeleton (23) for three diameters are 10 mm's PPR pipe, three connect skeleton (23) evenly set up, three both ends of connecting skeleton (23) respectively with open end skeleton (21) and tail end skeleton (22) through hot melt shaping fixed connection.
8. A taut net sack effective for reducing the proportion of young fish and shrimp according to claim 7, wherein: the opening end skeleton (21) still set up the annular cable wire that a diameter is 6mm outward, the annular cable wire with the open end of opening end skeleton (21), connection skeleton (23) and major network bag (1) is tied up fixedly mutually through the rope.
9. A taut net sack effective for reducing the proportion of young fish and shrimp according to claim 7, wherein: the tail end net piece (4) is a circular net piece, the tail end net piece (4) is provided with diamond meshes, the transverse mesh number of the maximum center of the tail end net piece (4) is 194 meshes, the mesh size is 15mm, and the transverse shrinkage coefficient is 0.2-0.3 during assembly.
10. The tensegrity net bag for effectively reducing the proportion of juvenile fishes and shrimps as claimed in claim 7, wherein: the separation net sheet (5) is provided with diamond meshes, the number of transverse meshes at the framework at the opening end is 133 meshes, the number of transverse meshes at the framework at the tail end is 117 meshes, the number of longitudinal meshes is 41 meshes, the mesh size is 25mm, and the transverse shrinkage coefficient is 0.2-0.3 during assembly.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211016285.9A CN115362995A (en) | 2022-08-24 | 2022-08-24 | Net-opening net bag capable of effectively reducing proportion of juvenile fish and juvenile shrimp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211016285.9A CN115362995A (en) | 2022-08-24 | 2022-08-24 | Net-opening net bag capable of effectively reducing proportion of juvenile fish and juvenile shrimp |
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| Publication Number | Publication Date |
|---|---|
| CN115362995A true CN115362995A (en) | 2022-11-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211016285.9A Pending CN115362995A (en) | 2022-08-24 | 2022-08-24 | Net-opening net bag capable of effectively reducing proportion of juvenile fish and juvenile shrimp |
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| Country | Link |
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| CN (1) | CN115362995A (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3647858B1 (en) * | 2004-09-15 | 2005-05-18 | ニュートン株式会社 | Fishing net |
| CN201349447Y (en) * | 2009-01-19 | 2009-11-25 | 上海海洋大学 | Cyanea nozakii net sheet separation device of fishing net |
| US20100064570A1 (en) * | 2006-11-28 | 2010-03-18 | Danny Gallagher | Netting arrangement |
| CN201830776U (en) * | 2010-09-02 | 2011-05-18 | 中国水产科学研究院南海水产研究所 | Fishing stow net sack |
| CN103548783A (en) * | 2013-10-24 | 2014-02-05 | 中国海洋大学 | Device and method for actively stimulating juvenile fishes to escape |
| CN106508830A (en) * | 2016-11-08 | 2017-03-22 | 山东好运通网具科技股份有限公司 | Large dustpan-shaped lift net cod end and tying method thereof |
| CN108575924A (en) * | 2018-03-13 | 2018-09-28 | 中国水产科学研究院南海水产研究所 | A kind of shrimp disease selectivity device |
| CN110506712A (en) * | 2019-08-27 | 2019-11-29 | 浙江海洋大学 | A kind of novel reduction by-catch trawlnet |
-
2022
- 2022-08-24 CN CN202211016285.9A patent/CN115362995A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3647858B1 (en) * | 2004-09-15 | 2005-05-18 | ニュートン株式会社 | Fishing net |
| US20100064570A1 (en) * | 2006-11-28 | 2010-03-18 | Danny Gallagher | Netting arrangement |
| CN201349447Y (en) * | 2009-01-19 | 2009-11-25 | 上海海洋大学 | Cyanea nozakii net sheet separation device of fishing net |
| CN201830776U (en) * | 2010-09-02 | 2011-05-18 | 中国水产科学研究院南海水产研究所 | Fishing stow net sack |
| CN103548783A (en) * | 2013-10-24 | 2014-02-05 | 中国海洋大学 | Device and method for actively stimulating juvenile fishes to escape |
| CN106508830A (en) * | 2016-11-08 | 2017-03-22 | 山东好运通网具科技股份有限公司 | Large dustpan-shaped lift net cod end and tying method thereof |
| CN108575924A (en) * | 2018-03-13 | 2018-09-28 | 中国水产科学研究院南海水产研究所 | A kind of shrimp disease selectivity device |
| CN110506712A (en) * | 2019-08-27 | 2019-11-29 | 浙江海洋大学 | A kind of novel reduction by-catch trawlnet |
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