CN113728982A - Novel prevent concurrently catching eel seedling fishing tackle - Google Patents

Novel prevent concurrently catching eel seedling fishing tackle Download PDF

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Publication number
CN113728982A
CN113728982A CN202110908234.6A CN202110908234A CN113728982A CN 113728982 A CN113728982 A CN 113728982A CN 202110908234 A CN202110908234 A CN 202110908234A CN 113728982 A CN113728982 A CN 113728982A
Authority
CN
China
Prior art keywords
net
protection
eel
doubling
opening
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202110908234.6A
Other languages
Chinese (zh)
Inventor
王燕平
汤建华
仲霞铭
吴磊
施金金
熊瑛
王储庆
闫欣
葛慧
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
JIANGSU MARINE FISHERIES RESEARCH INSTITUTE
Original Assignee
JIANGSU MARINE FISHERIES RESEARCH INSTITUTE
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by JIANGSU MARINE FISHERIES RESEARCH INSTITUTE filed Critical JIANGSU MARINE FISHERIES RESEARCH INSTITUTE
Priority to CN202110908234.6A priority Critical patent/CN113728982A/en
Publication of CN113728982A publication Critical patent/CN113728982A/en
Priority to CN202210038028.9A priority patent/CN114557324B/en
Pending legal-status Critical Current

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    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01K—ANIMAL HUSBANDRY; CARE OF BIRDS, FISHES, INSECTS; FISHING; REARING OR BREEDING ANIMALS, NOT OTHERWISE PROVIDED FOR; NEW BREEDS OF ANIMALS
    • A01K69/00—Stationary catching devices
    • A01K69/06—Traps
    • A01K69/08—Rigid traps, e.g. lobster pots
    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01K—ANIMAL HUSBANDRY; CARE OF BIRDS, FISHES, INSECTS; FISHING; REARING OR BREEDING ANIMALS, NOT OTHERWISE PROVIDED FOR; NEW BREEDS OF ANIMALS
    • A01K79/00—Methods or means of catching fish in bulk not provided for in groups A01K69/00 - A01K77/00, e.g. fish pumps; Detection of fish; Whale fishery
    • A01K79/02—Methods or means of catching fish in bulk not provided for in groups A01K69/00 - A01K77/00, e.g. fish pumps; Detection of fish; Whale fishery by electrocution
    • 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

Abstract

The invention discloses a novel anti-doubling eel fry catching fishing gear which comprises a net stretching body and a protection net, wherein the net stretching body is in a horn cylinder shape, the net stretching body is gradually reduced from a net opening to the rear end, the protection net covers the net opening of the net stretching, and meshes of the protection net are larger than meshes of the net stretching body. The invention provides a novel fishing tool for preventing and catching eel fries, which can prevent large rare protective animals such as Chinese sturgeons, finless porpoises and the like from entering a net-opening body to play a role in protection, and can also prevent natural enemies of eel fries with larger volume from entering net-opening for catching food.

Description

Novel prevent concurrently catching eel seedling fishing tackle
Technical Field
The invention relates to the technical field of eel fry fishing, in particular to a novel anti-doubling eel fry fishing tool.
Background
Eel fry catching is an important economic source for fishermen near the Yangtze river mouth, and the expanded net is a catching net commonly used in eel fry catching. The net is generally in the shape of a trumpet, and can be woven by using polyethylene wires. The net port is gradually reduced from the net port to the rear end, and the tail end of the net port is connected with a floating seedling collecting box. The mesh of the seedling collection box is 50-60 meshes. The net is suitable to be fixed on the beach far away from the sluice, seedlings are collected with tide, and the seedlings can be collected during rising or falling tide. However, when the net is used for catching eel fry, large rare protected animals such as Chinese sturgeons, finless porpoises and the like are easy to be caught by mistake. The crisis protects the safety of animals and is easy to violate the law. Therefore, a novel fishing tool for preventing and catching eel fries needs to be designed, large rare protection animals such as Chinese sturgeons and finless porpoises can be prevented from entering the net body, and the effect of protection is achieved.
Chinese patent application publication No. CN105580783A, published as 2016, 05, 18, entitled "eel fry catching device and method of use thereof", discloses an eel fry catching device, including a catcher and a guiding fishing net, characterized in that: the catcher comprises a conical inlet cover, an isolation cover, a receiving tail cover and a connecting rod, wherein the receiving tail cover is connected to the rear end of the inlet cover, the isolation cover is arranged in the receiving tail cover, and one end of the connecting rod is fixedly connected with the inlet cover; the entrance guard and the junction of accomodating the tail cover are provided with a plurality of evenly distributed's eel fry passageway I, also be provided with a plurality of evenly distributed's eel fry passageway II on the bottom of cage, eel fry passageway I divide into entrance point and exit end, be provided with square guiding hole on the entrance end, the bottom of accomodating the tail cover is provided with a plurality of inlet opening. However, the eel fry catching device still has the above problems.
Disclosure of Invention
The invention aims to solve the problem that large rare protective animals such as Chinese sturgeons, finless porpoises and the like are easy to be caught by mistake when eel fries are caught by a net in the prior art, and provides a novel anti-catching eel fry catching fishing gear, which can prevent the large rare protective animals such as Chinese sturgeons, finless porpoises and the like from entering a net body to play a role in protection and can also prevent natural enemies of eel fries with larger volume from entering the net to be caught.
In order to achieve the purpose, the invention adopts the following technical scheme:
a novel anti-doubling eel fry catching fishing gear comprises a net body and a protection net, wherein the protection net covers the net opening of the net, and meshes of the protection net are larger than meshes of the net body.
In the technical scheme, the net body is used for catching and collecting eel fries, the protection net is used for preventing large rare protection animals such as Chinese sturgeons and finless porpoises from entering the net body, the protection effect is achieved, and natural enemies of eel fries with large size can be prevented from entering the net body for predation.
Preferably, the net further comprises an inner guide net, the inner guide net is arranged between the protection net and the net tensioning body, the inner guide net is in a horn cylinder shape, a large opening of the inner guide net faces the protection net, a small opening of the inner guide net faces the outside through the net tensioning body, the inner guide net is larger than meshes of the net tensioning body, and the inner guide net is smaller than meshes of the protection net. The inner guide net can lead larger fishes wrongly led into the protection net out of the net body through the guide channel, and eel fries can be stretched through meshes of the inner guide net.
Preferably, the small opening of the inner guide net penetrates through the upper half part of the expanded net body. The eel has the habit of swimming against the bottom, the structure can enable the rear section of the inner guide net to be suspended, and eel fries are not easy to escape through a small opening of the inner guide net.
Preferably, the guide channel in the inner guide net is L-shaped, one end of the guide channel close to the protection net is horizontally arranged, and one end of the guide channel far away from the protection net is vertically arranged. The inflection point of the L-shaped guide channel can enable the eel fry to directly enter the open net, and the eel fry is not easy to escape through a small opening of the inner guide net. And the large fishes can swim out of the net body through the guide of the guide channel.
Preferably, the horizontal section of the guide channel is arranged in a suspension manner. The structure can make use of the habit that the eel swims close to the bottom, so that the eel fries enter the net.
Preferably, the inner guide mesh has a small opening size equal to or larger than twice the mesh size of the outer spacer mesh. The structure is convenient for large fishes to swim out of the net.
Preferably, the net body is in a horn cylinder shape, the net body is gradually reduced from the net opening to the rear end, and the tail end of the net body is connected with a floating seedling collecting box.
Preferably, a trapping lamp is arranged in the seedling collecting box.
Preferably, the light direction of the trap lamp faces the protection net. The structure can lead eel fry in a distance to the opening of the net, and then lead the eel fry into the fry collecting box through the trapping lamp.
Preferably, a translucent refractive plate is arranged on the protective net. The structure can increase the effect of the lamp tube on the protection net and has better trapping effect. The light irradiates on the semitransparent refracting plate, and can transmit light, refract light and reflect light.
Preferably, a fixing frame is arranged at the opening of the net stretching body, the protection net comprises an inner net and an outer net which are overlapped inside and outside, the outer frame of the inner net is connected with the fixing frame in a sliding mode, the frame of the outer net is connected with the fixing frame in a sliding mode, and the sliding direction of the outer net is perpendicular to the sliding direction of the inner net.
In the technical scheme, the inner net and the outer net can be overlapped or staggered by moving the inner net and the outer net, so that the size of the mesh can be adjusted. The complete overlap of the inner and outer nets is the largest mesh; when the inner net and the outer net are staggered transversely or longitudinally, the mesh is equal to half of the maximum mesh; when the inner and outer webs are simultaneously staggered both transversely and longitudinally, the mesh size is equal to one quarter of the maximum mesh size. After the inner net and the outer net move in place, the inner net and the outer net are fixed with the fixing frame through the fixing ropes.
The invention has the beneficial effects that: (1) large rare protective animals such as Chinese sturgeons, finless porpoises and the like can be prevented from entering the expanded net body to play a role in protection, and natural enemies of eel fries with larger volume can be prevented from entering the expanded net for predation; (2) the inner guide net can lead larger fishes wrongly led into the protection net out of the net through the guide channel, and eel fries can be stretched through meshes of the inner guide net; (3) the trapping lamp and the refraction plate can guide the distant eel fries to the opening of the net, and then the eel fries are guided into the fry collecting box through the trapping lamp; (4) the inner and outer nets are moved to be overlapped or staggered, thereby adjusting the mesh size.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic structural view of example 4.
In the figure: the seedling-collecting net comprises a net body 1, a fixing frame 1.1, an inner guide net 2, a protection net 3, an inner net 3.1, an outer net 3.2 and a seedling-collecting box 4.
Detailed Description
The invention is further described with reference to the following figures and specific embodiments.
Example 1:
as shown in figure 1, the novel anti-doubling eel fry catching fishing gear comprises a net opening body 1 and a protection net 3, wherein the protection net 3 covers the net opening of the net opening, and meshes of the protection net 3 are larger than meshes of the net opening body 1.
Among the above-mentioned technical scheme, a net body 1 is used for catching and collecting eel fry, and protection net 3 is used for preventing large-scale rare protection animals such as chinese sturgeon, finless porpoise from getting into a net body 1, plays the effect of protection, also can prevent that the natural enemy of the eel fry that the volume is great from getting into a net and predating.
Example 2:
as shown in fig. 1, in addition to embodiment 1, the present invention further includes an inner guide net 2, the inner guide net 2 is disposed between a protection net 3 and a tensioning net body 1, the inner guide net 2 has a trumpet-shaped configuration, a large opening of the inner guide net 2 faces the protection net 3, a small opening of the inner guide net 2 passes through an upper half portion of the tensioning net body 1 and faces outward, the inner guide net 2 is larger than meshes of the tensioning net, and the inner guide net 2 is smaller than meshes of the protection net 3. The guide channel in the inner guide net 2 is L-shaped, one end of the guide channel close to the protection net 3 is horizontally arranged, and one end of the guide channel far away from the protection net 3 is vertically arranged. The horizontal section of the guide channel is arranged in a suspended mode. The small opening size of the inner guide net 2 is more than or equal to twice the mesh size of the outer separation net.
The inner guide net 2 can lead larger fishes wrongly led into the protection net 3 out of the net body 1 through the guide channel, and eel fries can be led out of the net body through meshes of the inner guide net 2.
Example 3:
as shown in fig. 1, based on embodiment 1, the net body 1 is in a horn tube shape, the net body 1 is gradually reduced from a net opening to a rear end, the tail end of the net body 1 is connected with a floating seedling collecting box 4, and a trap lamp is arranged in the seedling collecting box 4. The light direction of the trapping lamp faces the protection net 3. A semitransparent refracting plate is arranged on the protective net 3.
Above-mentioned structure can lead eel seedling in a distance to the opening part of a net, and the seedling case 4 is gathered in the introduction of rethread trapping lamp. The semitransparent refracting plate can increase the effect of the lamp tube on the protective net 3, and has better trapping effect. The light irradiates on the semitransparent refracting plate, and can transmit light, refract light and reflect light.
Example 4:
as shown in fig. 2, on the basis of embodiment 1, a fixing frame 1.1 is provided at an opening of the expanded mesh body 1, the protection mesh 3 includes an inner mesh 3.1 and an outer mesh 3.2 which are overlapped inside and outside, an outer frame of the inner mesh 3.1 is slidably connected to the fixing frame, a frame of the outer mesh 3.2 is slidably connected to the fixing frame, and a sliding direction of the outer mesh 3.2 is perpendicular to a sliding direction of the inner mesh 3.1.
In the above technical solution, the mesh size can be adjusted by moving the inner net 3.1 and the outer net 3.2 so that the inner net 3.1 and the outer net 3.2 are overlapped or interlaced. The complete overlap of the inner 3.1 and outer 3.2 meshes is the largest; when the inner net 3.1 and the outer net 3.2 are staggered transversely or longitudinally, the mesh is equal to half of the maximum mesh; when the inner and outer webs 3.1, 3.2 are simultaneously staggered both transversely and longitudinally, the mesh is equal to one quarter of the maximum mesh. After the inner net 3.1 and the outer net 3.2 move in place, the inner net and the outer net are fixed with the fixing frame 1.1 through the fixing rope.

Claims (10)

1. The utility model provides a novel prevent concurrently catching eel seedling fishing tackle, characterized by, is including opening net body and protection net, open the net body and be the loudspeaker tube-shape, open the net body and reduce from net gape to rear end gradually, the protection net covers the net gape department of opening the net, and the mesh of protection net is greater than the mesh of opening the net body.
2. The novel anti-doubling eel fry catching fishing gear as claimed in claim 1, characterized by further comprising an inner guide net, wherein the inner guide net is arranged between the protection net and the net body, the inner guide net is in a horn tube shape, the large opening of the inner guide net faces the protection net, the small opening of the inner guide net faces the outside through the net body, the inner guide net is larger than the meshes of the net, and the inner guide net is smaller than the meshes of the protection net.
3. The novel anti-doubling eel fry catching fishing gear as claimed in claim 2, wherein the small opening of the inner guide net passes through the upper half part of the expanded net body.
4. The novel anti-doubling eel fry catching fishing gear as claimed in claim 2, wherein the guiding channel in the inner guiding net is L-shaped, one end of the guiding channel close to the protecting net is horizontally arranged, and one end of the guiding channel far away from the protecting net is vertically arranged.
5. The novel anti-doubling eel fry catching fishing gear as claimed in claim 4, wherein the horizontal section of the guide channel is suspended.
6. The novel anti-doubling eel fry catching fishing gear as claimed in claim 1, 2, 3, 4 or 5, wherein the tail end of the net body is connected with a floating fry collecting box.
7. The novel anti-doubling eel fry catching fishing gear as claimed in claim 6, wherein a trapping lamp is arranged in the fry collecting box.
8. The new anti-doubling eel fry catching fishing gear as claimed in claim 7, wherein the light direction of the trapping lamp faces the protection net.
9. The novel anti-doubling eel fry catching fishing gear as claimed in claim 8, wherein the protective net is provided with a semitransparent refracting plate.
10. The novel anti-doubling eel fry catching fishing gear as claimed in claim 1, 2, 3, 4 or 5, wherein a fixing frame is arranged at the opening of the net body, the protection net comprises an inner net and an outer net which are overlapped inside and outside, the outer frame of the inner net is slidably connected with the fixing frame, the frame of the outer net is slidably connected with the fixing frame, and the sliding direction of the outer net is perpendicular to the sliding direction of the inner net.
CN202110908234.6A 2021-08-09 2021-08-09 Novel prevent concurrently catching eel seedling fishing tackle Pending CN113728982A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CN202110908234.6A CN113728982A (en) 2021-08-09 2021-08-09 Novel prevent concurrently catching eel seedling fishing tackle
CN202210038028.9A CN114557324B (en) 2021-08-09 2022-01-13 Eel fry fishing net capable of preventing false fishing

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202110908234.6A CN113728982A (en) 2021-08-09 2021-08-09 Novel prevent concurrently catching eel seedling fishing tackle

Publications (1)

Publication Number Publication Date
CN113728982A true CN113728982A (en) 2021-12-03

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Application Number Title Priority Date Filing Date
CN202110908234.6A Pending CN113728982A (en) 2021-08-09 2021-08-09 Novel prevent concurrently catching eel seedling fishing tackle
CN202210038028.9A Active CN114557324B (en) 2021-08-09 2022-01-13 Eel fry fishing net capable of preventing false fishing

Family Applications After (1)

Application Number Title Priority Date Filing Date
CN202210038028.9A Active CN114557324B (en) 2021-08-09 2022-01-13 Eel fry fishing net capable of preventing false fishing

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114586748A (en) * 2022-03-21 2022-06-07 浙江省海洋水产研究所 Coilia mystus fry collecting device

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU714137B3 (en) * 1999-06-03 1999-12-16 Sven-Ake Michael Klingwall A trawl net and method
JP2005110633A (en) * 2003-10-10 2005-04-28 Takanashi Katsuaki Fish species classifying net for towing net fishery
CN202172721U (en) * 2011-08-01 2012-03-28 杨志光 Illuminating drop net with fish separating device and safety escape passage for silver carp and bighead carp fry
CN103210887A (en) * 2013-03-04 2013-07-24 李高杰 Combined type fixing fishing net tool
CN205848392U (en) * 2016-06-21 2017-01-04 中国水产科学研究院南海水产研究所 A kind of cage net
CN108464282B (en) * 2018-04-17 2020-05-19 中国水产科学研究院南海水产研究所 Jellyfish trawl net for protecting fishery resources
CN210519825U (en) * 2019-08-06 2020-05-15 武汉汇集源农业科技股份有限公司 Adjustable net cage for aquatic product cultivation

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114586748A (en) * 2022-03-21 2022-06-07 浙江省海洋水产研究所 Coilia mystus fry collecting device

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CN114557324A (en) 2022-05-31
CN114557324B (en) 2023-04-28

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Application publication date: 20211203

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