Foldable mesh cage type ampullaria gigas trapping device and trapping method

Abstract

The invention discloses a foldable mesh cage type ampullaria gigas trapping device and a trapping method, and relates to the technical field of biological control. Comprising a folding net cage main body, a snail collecting cage arranged on the folding net cage main body and communicated with the interior of the folding net cage main body, a food calling bag arranged in the folding net cage main body in the length direction, a food calling agent contained in the food calling bag, a plurality of snail inlets formed in the folding net cage main body and guide assemblies arranged on the outer sides of the snail inlets. One end of the folding mesh cage body away from the conch collecting cage is closed; each pomacea canaliculata collecting cage is provided with a funnel-shaped inlet for collecting pomacea canaliculata and a closed net bag, and a phagostimulant is placed in the closed net bag; the portable folding chair is reasonable in design, has a foldable design and is convenient to carry and store. The net cage structure effectively traps the ampullaria gigas and prevents the ampullaria gigas from escaping, and meanwhile a phagostimulant can be placed to attract the ampullaria gigas to enter the net cage. The device is suitable for rice fields and other aquatic environments, is easy to install and can be repeatedly used, and pollution to the environment is greatly reduced.

Description

Technical Field

[0001] The invention relates to the technical field of biological control, and more specifically to the technical field of a foldable net cage type golden apple snail trapping device and a trapping method. Background Art

[0002] Golden apple snail is a hard-shelled mollusk of the family Physalis in the order Mesogastropoda. Golden apple snails are dioecious, and individuals are relatively large with complete spiral shells. They are known as giant field snails. The first whorl is larger and flatter than field snails, and looks like an apple, so they are also called apple snails. Eating raw or underheated golden apple snails can cause meningoencephalitis, which can cause symptoms such as headaches, fever, and stiff necks. In severe cases, it can cause death. Golden apple snails have a wide range of diets, including both animals and plants, but mainly bright green and juicy plants. They especially like to eat aquatic vascular plants, such as duckweed, wild rice stems, lotus roots, and rice. The irrigation outlet of rice fields is the main channel for water to enter rice fields. Golden apple snails often enter rice fields with the water flow, causing damage to rice seedlings. Golden apple snails are the main pests of crops such as rice, and they seriously threaten food security and ecological security. Existing patents disclose the following technologies:

[0003] The patent with the publication number CN208080423U and the patent name "A device for trapping and capturing golden apple snails in rice fields" discloses the following technology: a device for trapping and capturing golden apple snails in rice fields. The device includes a trapping channel, a trapping net room and a trapping bucket. The trapping channel includes an inlet channel and a buffer net slot. The inlet channel has openings at both ends, one end opens outwards, and the other end opens to connect with the buffer net slot. A crawling board extending inwards is arranged at the outward opening. The crawling board forms an angle of 15 to 22.5 degrees with the bottom surface of the inlet channel. The buffer net slot has openings at both ends, one end opens to connect with the inlet channel, and the other end opens to connect with the trapping net room. The trapping net room has an opening at the top, and the bottom is connected with the upper opening of the trapping bucket, and the rest is a closed net surface. The utility model has a simple structure, and can concentrate the golden apple snails into the trapping bucket through the special design of the trapping channel and the trapping net room, and can effectively prevent the golden apple snails from escaping, so that the golden apple snails can be captured in a concentrated manner, the operation is convenient, and the trapping effect is good, thereby providing an environmentally friendly golden apple snail physical prevention and control technology.

[0004] At present, comprehensive prevention and control measures involve chemical agents, which may cause water pollution and ecological damage. The above patents and commercially available physical capture devices have problems such as bulky structure, inconvenient transportation, complex installation, and low snail catching efficiency, which cannot meet the actual operation requirements of multiple habitats of golden apple snails. Therefore, there is an urgent need for a trapping device with a lightweight structure, easy to carry, foldable, and high snail catching efficiency to achieve efficient and environmentally friendly golden apple snail prevention and control. Summary of the invention

[0005] The purpose of the present invention is to solve the above technical problems and provide a foldable net cage type golden apple snail trapping device and a trapping method.

[0006] In order to achieve the above-mentioned purpose, the present invention specifically adopts the following technical solutions:

[0007] The present invention provides a foldable net cage type golden apple snail trapping device, comprising a foldable net cage main body, a snail collecting cage arranged on the foldable net cage main body and connected with the inside of the foldable net cage main body, an attractant bag arranged inside the foldable net cage main body along the length direction, an attractant contained in the attractant bag, a plurality of screw inlets opened on the foldable net cage main body and a guide component arranged on the outside of each screw inlet, the foldable net cage main body is closed at one end away from the snail collecting cage; each snail collecting cage has a funnel-shaped entrance and a closed net bag for collecting golden apple snails, and the closed net bag is filled with the attractant.

[0008] In one embodiment, each guide assembly includes at least two guide rods, each guide rod is installed at a corresponding screw inlet, and a free end of each guide rod extends to the bottom mud.

[0009] Specifically, the guide rod is arranged at the lower edge of the screw inlet and extends to the bottom mud, so as to guide the golden apple snail to move forward to the screw inlet. The golden apple snail guide rod is made of hard plastic, with a length of 17 cm, and two guide rods extend from the lower edge of each screw inlet.

[0010] In one embodiment, the screw inlet is unidirectionally connected to the corresponding screw collecting cage, and the screw inlet is a funnel-shaped structure, which is arranged to close inwardly, and a hard trumpet-shaped inverted whisker is installed at its end.

[0011] Specifically, the snail collecting cage is connected to the folding net cage body through a fixed rod, and a closed net bag is arranged inside the snail collecting cage for convenient and quick collection of golden apple snails.

[0012] In one embodiment, the size of the screw inlet end is 4 cm×4 cm, and is located at a height of 6-10 cm on the side of the folding cage body.

[0013] In one embodiment, the folding cage body includes a plurality of folding units arranged in series, and screw inlets are provided on both sides of each folding unit.

[0014] In one embodiment, the folding mesh cage body includes a plurality of stainless steel frames arranged at intervals and an outer mesh cover sleeved outside all the stainless steel frames, each stainless steel frame is fixedly connected to the outer mesh cover, and a folding unit is formed between two stainless steel frames.

[0015] Specifically, the main body of the folding mesh cage is composed of several stainless steel frames and an outer mesh cover (nylon mesh). The overall structure is a foldable structure, which forms a stable three-dimensional structure after unfolding.

[0016] In one embodiment, the attractant bag is hung at the center of the foldable net cage body, and is used to contain attractants to attract golden apple snails to enter the net cage.

[0017] In one embodiment, the folding cage body includes 8 rectangular stainless steel frames and a plurality of nylon mesh sheets. When the folding cage body is unfolded, the length, width and height are 120 cm, 20 cm and 15 cm respectively, and the mesh diameter of the nylon mesh is 3 mm.

[0018] The attractant bag is a long nylon mesh bag with a pore size of 0.5mm and a length of 1m.

[0019] In one embodiment, the attractant includes the following components by mass: 250 parts of rice leaf powder, 350 parts of soybean flour, 250 parts of duckweed powder, 50 parts of snail shell powder, 25 parts of sodium ascorbate, 50 parts of carrageenan and 25 parts of agar. The attractant can maintain the particle shape in water without dispersion, and has a strong attractant effect on the golden apple snail, so that the golden apple snail actively enters the net cage to eat the attractant.

[0020] In one embodiment, a guide net is installed on the side of the folding cage body. The guide net is 100 cm long and 50 cm high. Both ends are tightened by plastic rods. The lower end of the net contacts the side of the folding cage body to guide the golden apple snails to climb and collect their egg masses.

[0021] The beneficial effects of the present invention are as follows:

[0022] 1. The invention has a reasonable design, is made of light and corrosion-resistant materials, and has a foldable design, which is easy to carry and store. The net cage structure effectively traps the golden apple snails and prevents them from escaping, and at the same time, attractants can be placed to attract the golden apple snails into the net cage. The device is suitable for rice fields and other aquatic environments, is easy to install, can be reused, and greatly reduces pollution to the environment.

[0023] 2. The device is small in size and light in weight after folding, easy to carry and use: the net cage is made of corrosion-resistant lightweight materials, can be folded and stored, and is easy to move and place in paddy fields and irrigation canals, saving labor. After entering, the golden apple snails can crawl freely into the snail collection cage. When collecting the golden apple snails, you only need to take down the snail collection cage, without taking out the entire folding cage, saving operation time.

[0024] 3. The device has a large internal space and a large capture capacity: the folding cage has a large internal space, a large number of snail inlets, and the snail inlets are in contact with the bottom mud at an inclined surface. In addition, the guiding effect of the guide rod can capture a large number of golden apple snails. The upper part of the cage leaks out of the water to prevent the golden apple snails from dying of lack of oxygen and producing odor.

[0025] 4. Trapping apple snails and collecting egg masses at the same time to prevent continuous harm: A guide net is installed on the side of the device to induce the apple snails to climb and lay eggs. Since the area is large enough and connected to the side of the net cage, the apple snails lured by the attractant can lay eggs on the guide net, so the effect of attracting and laying eggs is obvious. In addition, the guide net can be disassembled and replaced to facilitate the handling of the collected egg masses.

[0026] 5. The trapping device does not require the use of chemical agents, thus avoiding pollution of the water environment and interference with the rice field ecosystem. In practical applications, the trapping cage plus the attractant can significantly reduce the number of golden apple snails in the rice field, reduce the damage of golden apple snails to rice seedlings, and achieve efficient and environmentally friendly physical control. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the embodiments. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without creative work.

[0028] Figure 1 It is a three-dimensional structural diagram of the folding cage of the present invention;

[0029] Figure 2 for Figure 1 A partial schematic diagram of

[0030] Figure 3 It is a schematic diagram of the structure of the screw cage of the present invention;

[0031] Figure 4 It is a structural schematic diagram of the guide net and the fixing device thereof of the present invention;

[0032] Figure numerals: 1-folding net cage body, 2-screw inlet, 3-guide rod, 4-attractant bag, 5-attractant, 6-guide net, 7-snail collecting cage. DETAILED DESCRIPTION

[0033] In order to make the technical problems, technical solutions and technical effects of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0034] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0035] It should be noted that similar reference numerals and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further defined and explained in the subsequent drawings. In addition, the terms "first", "second", etc. are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0036] In the description of the embodiments of the present invention, it should be noted that the terms "inside", "outside", "upper", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, or are the orientations or positional relationships in which the inventive product is usually placed when used. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0037] Example 1

[0038] like Figure 1-Figure 4 As shown, this embodiment provides a foldable net cage type Pomacea canaliculata and its egg mass trapping device, comprising a foldable cage body with a length of 80-120 cm, a trapping bag 4 and a trapping agent 5, a snail collecting cage 7 and a guide net 6. The foldable cage body can be connected to the snail collecting cage 7 and the guide net 6 through a fixing rod. The trapping bag 4 and the trapping agent 5 are suspended at the center of the net cage by a rope.

[0039] The main body of the cage is made of high-strength, stainless steel frame combined with nylon mesh to form a solid structure. The cage is 80-120cm long, 20cm wide and 15cm high, which is suitable for the growth and activity space of the golden apple snail. The frame is made of stainless steel to ensure the corrosion resistance and durability of the device, and is suitable for long-term use in aquatic environments. Each spacing of the frame is 15cm, which ensures the stability of the cage, and can also effectively filter the water flow and maintain the fluidity of the water body. The nylon mesh of the cage has a pore size of 3mm, which can effectively prevent the golden apple snail from escaping. In order to facilitate transportation and storage, the cage can be folded to reduce the occupied space after folding, and can quickly form a stable three-dimensional structure after unfolding.

[0040] The guide rod 3 for the Pomacea canaliculata is made of a hard plastic material and has a length of 17 cm. The guide rod 3 extends from the lower edge of the screw inlet 2 and contacts the bottom mud, which can effectively guide the Pomacea canaliculata to move toward the screw inlet 2. Two guide rods 3 extend from the lower edge of each screw inlet 2 to enhance the guiding effect. The setting of the guide rod 3 can ensure that the Pomacea canaliculata enters the net cage smoothly and reduce the situation where it moves in the opposite direction due to external interference.

[0041] An attractant bag 4 is provided in the main body of the folding cage, which is a long nylon mesh bag with a pore size of 0.5 mm and a bag length of 100 cm. The attractant bag 4 is suspended at the center of the mesh cage to hold the attractant 5. The configuration of the attractant bag 4 and the attractant 5 can effectively attract the golden apple snail to enter the mesh cage. The attractant 5 includes the following components by mass: 250 parts of rice leaf powder, 350 parts of soybean flour, 250 parts of duckweed powder, 50 parts of snail shell powder, 25 parts of sodium ascorbate, 50 parts of carrageenan and 25 parts of agar. The attractant can keep the particle shape in the water without dispersion, and has a strong attractant effect on the golden apple snail, allowing the golden apple snail to actively enter the mesh cage to feed the attractant. The attractant 5 will not pollute the environment and meet the requirements of ecological protection. The attractant 5 will not pollute the environment and meet the requirements of ecological protection.

[0042] One end of the folding cage body is closed by tying with a nylon net, and the other end is connected to the snail collecting cage 7. The design of the snail collecting cage 7 is the same as that of the folding cage body, both of which adopt a stainless steel frame and a funnel-shaped entrance, and a closed net bag is arranged inside. Placing an attractant 5 in the snail collecting cage 7 can enable the golden apple snails to smoothly gather in the snail collecting cage 7 after entering the net cage. The snail collecting cage 7 and the net cage body are connected by a fixed rod to ensure that the two are firmly connected and easy to disassemble. When collecting golden apple snails, only the snail collecting cage 7 needs to be removed and emptied, and there is no need to operate the folding cage body again, which greatly improves the operating efficiency. Check the folding cage body at regular intervals, remove the captured golden apple snails and replenish bait.

[0043] In order to facilitate the spawning of the golden apple snail, a nylon guide net 6 with a length of 100 cm and a height of 50 cm is installed on the side of the net cage. The guide net 6 is tightened by a plastic rod, and the lower end of the net contacts the side of the folding net cage, which can effectively guide the golden apple snail to crawl and complete spawning on the guide net 6. The setting of the guide net 6 increases the trapping effect on the golden apple snail egg mass, further reducing the population of the golden apple snail. The guide net 6 can be disassembled, which is convenient for cleaning and processing the collected egg masses.

[0044] The technical solution of the present invention is further described below through specific embodiments, but it is not intended to limit the present invention.

[0045] Working principle:

[0046] When the golden apple snail enters the trapping area, the attractant 5 attracts it to move inside the net cage. The golden apple snail enters the net cage through the funnel-shaped screw inlet 2 or the guide rod 3. By providing multiple screw inlets 2 and guide rods 3, the golden apple snails can enter the net cage in large quantities in a short time. Once the golden apple snail enters the net cage, due to the attractant effect of the attractant 5 in the snail collecting cage 7, the golden apple snail will eventually gather in the snail collecting cage 7. The golden apple snails in the snail collecting cage 7 are enclosed in a net bag and can be easily transferred to a designated area or processed. The snail collecting cage 7 can be quickly disassembled without moving the entire net cage.

[0047] The device for trapping golden apple snails in this embodiment does not use any chemical pesticides, but relies entirely on physical methods to capture golden apple snails, thereby avoiding pollution to the water environment and the surrounding ecosystem. Since the attractant 5 is natural and environmentally friendly, the device meets the requirements of ecological protection and sustainable agricultural development, and can effectively reduce the harm of golden apple snails.

[0048] Practical operation:

[0049] In practical applications, the size of the net cage, the number of snail inlets 2, and the amount of attractant 5 can be adjusted according to different water environments and the activity patterns of golden apple snails. For larger rice fields or waters, the number and size of the net cages can be increased to achieve a higher trapping efficiency. In areas where there are a large number of golden apple snails, the amount of attractant 5 can be appropriately increased to improve the trapping effect. By adjusting and optimizing the configuration of the trapping device, it is possible to ensure efficient capture of golden apple snails in different water environments and minimize the harm of golden apple snails to aquatic crops.

[0050] Example 2

[0051] Example 1 discloses a foldable net cage type Pomacea canaliculata snail and its egg mass trapping device, which uses nylon net cages with different apertures to conduct indoor trapping tests on Pomacea canaliculata snails.

[0052] Test materials: 1mm pore size nylon mesh, 3mm pore size nylon mesh, 10mm pore size nylon mesh, small tube apple snails (Pomacea canaliculata) (large snail: diameter ≥20mm, medium snail: diameter ≥10mm, young snail: diameter ≥3mm).

[0053] Experimental method: Place three kinds of nylon mesh cages and attractants with different pore sizes in a glass water tank with a length, width and height of 2m×1m×1m respectively. The water level is 10cm. Put 50 large snails, 50 medium snails and 50 young snails into the tank at the same time. In addition, a treatment without adding attractants is set as a control group. Each treatment is repeated 3 times.

[0054] The number of golden apple snails in the snail cage was recorded and the trapping rate was calculated. The results are shown in Table 1.

[0055] Table 1 The trapping rate of golden apple snails in nylon cages with different apertures in indoor experiments

[0056] Mesh aperture Test example Test case trapping rate (%) Control group The trapping rate of the control group (%) 1mm Test Example 1 46±5.48 Control group 1 35±5.71 3mm Test Example 2 68±8.37 Control group 2 44.58±8.72 10mm Test Example 3 28±10.04 Control group 3 17.83±13.58

[0057] Experiments show that the net-cage-type golden apple snail trapping device disclosed in Experimental Examples 1 to 3 can effectively trap golden apple snails. Compared with a single net cage, the effect of trapping golden apple snails is significantly improved after adding attractants.

[0058] Example 3

[0059] Example 1 discloses a foldable net cage type Pomacea canaliculata snail and its egg mass trapping device, which uses nylon net cages with different apertures to conduct field trapping experiments on Pomacea canaliculata snails.

[0060] Test materials: 1mm pore size nylon mesh, 3mm pore size nylon mesh, 10mm pore size nylon mesh.

[0061] Experimental method: A section of a rice field irrigation canal was selected and nylon cages with three different apertures and attractants were placed.

[0062] In addition, a treatment without adding attractants was set as a control group, and 3 replicates were set for each treatment.

[0063] The weight of the golden apple snails in the snail cage was recorded and the calculation results are shown in Table 2.

[0064] Table 2 The trapping rate of golden apple snails in nylon cages with different apertures in field trials

[0065]

[0066]

[0067] Experiments show that the net-cage-type golden apple snail trapping device disclosed in Experimental Examples 1 to 3 can effectively trap golden apple snails in field water environments. Compared with a single net cage, the amount of golden apple snails trapped is significantly increased after adding attractants.

Claims

1. A foldable net cage type golden apple snail trapping device, characterized in that: The invention comprises a foldable net cage body (1), a snail collecting cage (7) arranged on the foldable net cage body (1) and connected to the inside of the foldable net cage body (1), an attractant bag (4) arranged inside the foldable net cage body (1) along the length direction, an attractant (5) contained in the attractant bag (4), a plurality of screw inlets (2) provided on the foldable net cage body (1), and a guide component arranged on the outside of each of the screw inlets (2); the foldable net cage body (1) is closed at one end away from the snail collecting cage (7); each of the snail collecting cages (7) has a funnel-shaped entrance for collecting golden apple snails and a closed net bag, and the attractant (5) is placed in the closed net bag.

2. A foldable net cage type Pomacea canaliculata trapping device according to claim 1, characterized in that: Each of the guide assemblies comprises at least two guide rods (3), each of the guide rods (3) is mounted at the corresponding screw inlet (2), and the free end of each of the guide rods (3) extends to the bottom mud.

3. The foldable net cage type Pomacea canaliculata trapping device according to claim 1, characterized in that: The screw inlet (2) is in one-way communication with the corresponding screw collecting cage (7). The screw inlet (2) is a funnel-shaped structure, which is arranged to close inwards, and a hard trumpet-shaped inverted whisker is installed at its end.

4. The foldable net cage type Pomacea canaliculata snail trapping device according to claim 1, characterized in that: The attractant (5) comprises the following ingredients by mass: 250 parts of rice leaf powder, 350 parts of soybean flour, 250 parts of duckweed powder, 50 parts of snail shell powder, 25 parts of sodium ascorbate, 50 parts of carrageenan and 25 parts of agar.

5. The foldable net cage type Pomacea canaliculata snail trapping device according to claim 1, characterized in that: The folding mesh cage body (1) comprises a plurality of folding units arranged in series, and both sides of each folding unit are provided with screw inlets (2).

6. The foldable net cage type Pomacea canaliculata snail trapping device according to claim 5, characterized in that: The folding mesh cage body (1) comprises a plurality of stainless steel frames arranged at intervals and an outer mesh cover sleeved on the outside of all the stainless steel frames, each of the stainless steel frames is fixedly connected to the outer mesh cover, and a folding unit is formed between two of the stainless steel frames.

7. The foldable net cage type Pomacea canaliculata snail trapping device according to claim 1, characterized in that: The attractant bag (4) is hung at the center of the foldable net cage body (1) and is used to contain the attractant (5) to attract the golden apple snails to enter the net cage.

8. The foldable net cage type Pomacea canaliculata snail trapping device according to claim 6, characterized in that: The folding net cage body (1) comprises 8 rectangular stainless steel frames and a plurality of nylon mesh sheets. When the folding net cage body (1) is unfolded, the length, width and height are 120 cm, 20 cm and 15 cm respectively, and the mesh diameter of the nylon mesh is 3 mm; the attractant bag (4) is a long nylon mesh bag with a mesh diameter of 0.5 mm and a length of 1 m; the size of the end of the screw inlet (2) is 4 cm×4 cm, and is located at a height of 6-10 cm on the side of the folding net cage body (1).

9. The foldable net cage type Pomacea canaliculata snail trapping device according to claim 8, characterized in that: A guide net (6) is installed on the side of the folding net cage body (1). The guide net (6) is 100 cm long and 50 cm high. Both ends are tightened by plastic rods. The lower end of the net contacts the side of the folding net cage body (1) to guide the golden apple snails to climb and collect their egg masses.

10. A trapping method of a foldable net-cage type Pomacea canaliculata trapping device, characterized in that: A foldable net cage type Pomacea canaliculata snail trapping device according to any one of claims 1 to 9.

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