Device and method for capturing ampullaria gigas and ampullaria gigas eggs

Abstract

The invention provides a device and a method for capturing ampullaria gigas and ampullaria gigas eggs. The device comprises an anti-spur pad, a trapping flower box and a sleeve pile, the trapping flower box is mounted on the sleeve pile and is in contact with the revetment; the trapping flower box can float up and down along with the change of the external water level; the revetment is further provided with an anti-spiking pad and a trapping channel, the trapping channel is communicated with the trapping flower box, and the trapping channel is not internally provided with the anti-spiking pad. A one-way door is installed in the trapping flower box, and the ampullaria gigas can climb into the trapping flower box through the one-way door and the trapping channel. The pomacea canaliculata is trapped through a physical method, the pomacea canaliculata eggs can be collected, the structure is simple, the effect is good, the use method is convenient, and environmental hazards are avoided. According to the invention, through the arrangement of the anti-spur pad, the pomacea canaliculata is prevented from laying eggs on the river channel revetment, the harm to water conservancy facilities is reduced, and the negative influence of dense distribution of the pink snail eggs on the river channel landscape is reduced to a great extent.

Description

Technical Field

[0001] The present invention relates to the technical field of Pomacea canaliculata prevention and control, and in particular to a device and method for capturing Pomacea canaliculata and snail eggs. Background Art

[0002] The golden apple snail, also known as the golden apple snail, is a mollusk belonging to the family of the order of mesogastropod, the family of the order of hystrix, and the genus of hystrix. It is native to the Amazon River in South America. Due to its strong adaptability and rapid growth and reproduction, it quickly spreads after being abandoned, causing serious damage to agricultural production, the ecosystem, and people's health. In 2003, it was included in the first list of 16 alien species that invaded my country.

[0003] May to August every year is the peak breeding season for the golden apple snail. At night, the female snail climbs to the pool wall, wooden stakes or stems and leaves of aquatic plants 15 to 40 cm above the water surface to lay eggs. Each spawning lasts 20 to 80 minutes. After an interval of 3 to 5 days, the second spawning will take place. It can lay 20 to 40 eggs a year, with a total of 30,000 to 50,000 eggs.

[0004] The main prevention and control measures for golden apple snails are as follows:

[0005] 1. Physical prevention and control: blocking snails, manual cleaning, water level control, habitat destruction, etc. Disadvantages: high manpower consumption and low efficiency;

[0006] 2. Chemical control: 5% Meta, 6% Metaldehyde granules, 85% Snail Killer wettable powder, 50% Metaldehyde wettable powder, 60% Saponin Nicotine aqueous solution, etc. Disadvantages: Severe pollution, pollutants may remain in the soil, water and crops for a long time, potentially toxic to animals and humans; indiscriminately poison other aquatic animals;

[0007] 3. Biological control: releasing ducks to control snails and ecological breeding. Disadvantages: generally cannot eliminate adult snails with hard shells, but has a better control effect on young snails.

[0008] Therefore, there is currently a lack of a solution for removing the golden apple snails that is both environmentally friendly and manpower-saving. Summary of the invention

[0009] In view of the defects in the prior art, the object of the present invention is to provide a device and method for capturing golden apple snails and snail eggs.

[0010] According to the present invention, a device for capturing golden apple snails and snail eggs comprises a snail thorn-proof pad, a trapping flower box and a sleeve pile;

[0011] The trapping flower box is installed on the sleeve pile and contacts the revetment; the trapping flower box can float up and down with the change of external water level;

[0012] The revetment is also provided with a snail-proof pad, and a trapping channel is provided on the revetment, the trapping channel is connected with the trapping flower box, and no snail-proof pad is provided in the trapping channel;

[0013] A one-way door is installed in the trapping flower box, and the golden apple snail can pass through the trapping channel and climb into the trapping flower box through the one-way door.

[0014] Preferably, the number of the one-way doors is 2, the two one-way doors are symmetrically arranged, and the one-way door comprises a fixed surface, a rotating cross bar, a shell and a door body;

[0015] The fixing surface is provided with a screw hole, and the fixing surface is fixedly connected to the inside of the trapping flower box through the screw hole;

[0016] The shell is connected to the fixed surface, the rotating cross bar is installed in the shell, an opening structure is provided on the shell, the end of the door body passes through the opening structure and is connected to the rotating cross bar through a clamping spring.

[0017] Preferably, it further comprises an anti-escape structure, wherein the anti-escape structure comprises a mounting surface, a flexible portion and spikes;

[0018] The mounting surface is connected to the trapping flower box; the flexible portion is a structure that is thick at the bottom and pointed at the top, and the pointed portion of the flexible portion faces the same direction as the crawling direction of the golden apple snail entering the trapping flower box;

[0019] One side of the flexible portion is a smooth surface; the other side of the flexible portion is provided with spikes;

[0020] The free end of the spike faces the same direction as the crawling direction of the golden apple snail entering the trapping flower box.

[0021] Preferably, the sleeve pile includes a first steel pipe pile and a second steel pipe pile; the first steel pipe pile is sleeved on the second steel pipe pile and can move in the up and down directions, the second steel pipe pile is inserted into the bottom of the shore, and the first steel pipe pile is firmly connected to the trapping flower box.

[0022] Preferably, the anti-snail thorn pad is divided into a front and a back side, the back side is fixed on the revetment, and the front side has thorn-like structures evenly distributed.

[0023] Preferably, a 30 cm long baffle is fixed on the side wall of the trapping flower box, and a 5 cm thick wooden board is placed on the baffle;

[0024] Preferably, it also includes a net bag, and a hook is installed on the inner wall of the trapping flower box cavity, the net bag is hung on the hook, and fresh plant leaves are placed in the net bag.

[0025] Preferably, an outward-opening door is provided on the front of the trapping flower box.

[0026] Preferably, the anti-snail pads are distributed on the left and right sides of the trapping flower box, and a trapping channel is left only directly below the trapping flower box.

[0027] According to a method for capturing Pomacea canaliculata and its eggs provided by the present invention, the device for capturing Pomacea canaliculata and its eggs is used; and the method further comprises the following steps:

[0028] S1. One or two months before the golden apple snail enters its peak breeding period, lower the river water level to 10-15 cm below the normal water level, lay snail-proof mats along the river, restore the river water level to normal, and ensure that the bottom of the snail-proof mat is immersed below the normal water level of the river;

[0029] S2. Install trapping boxes based on the snail density surveyed the previous year;

[0030] S3. The trapping flower box is 20 cm away from the normal water level of the river. Fresh plant leaves are arranged in the trapping flower box in advance, and seasonal flowers are arranged on the trapping flower box to beautify the river landscape;

[0031] S4. Pomacea canaliculata needs to leave the water to lay eggs. It is difficult for it to use its ventral feet to crawl on the thorns due to the restriction of the snail thorn pad. It can only climb up through the reserved trapping channel and enter the trapping flower box.

[0032] S5. River maintenance workers regularly clean and crush the golden apple snails and snail eggs in the flower box cavity, replace the fresh plant leaves in the flower box cavity, check the fixation of the anti-snail pads, and whether the one-way doors of the flower boxes can be opened normally.

[0033] Compared with the prior art, the present invention has the following beneficial effects:

[0034] 1. The present invention uses a physical method to trap golden apple snails and can collect snail eggs. It has a simple structure, good effect, convenient use and no environmental harm.

[0035] 2. In addition to trapping golden apple snails, since golden apple snails also lay eggs in flower boxes, the present invention can also clean snail eggs, reducing labor costs and improving efficiency.

[0036] 3. The present invention prevents the golden apple snail from laying eggs on the river bank by setting the anti-snail thorn pad, reduces the harm to water conservancy facilities, and greatly reduces the negative impact of the dense distribution of pink snail eggs on the river landscape. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] Other features, objects and advantages of the present invention will become more apparent from the detailed description of non-limiting embodiments made with reference to the following drawings:

[0038] Figure 1 It is a structural schematic diagram of the present invention;

[0039] Figure 2This is the front view of the trapping flower box, where the arrow indicates the direction in which the one-way door opens;

[0040] Figure 3 It is a structural schematic diagram of a one-way door;

[0041] Figure 4 This is a schematic diagram of the structure of the present invention equipped with an anti-escape structure;

[0042] Figure 5 A schematic diagram of the structure to prevent escape;

[0043] Figure 6 It is a schematic diagram of the structure of the flexible part.

[0044] The figure shows:

[0045] DETAILED DESCRIPTION

[0046] The present invention is described in detail below in conjunction with specific embodiments. The following embodiments will help those skilled in the art to further understand the present invention, but are not intended to limit the present invention in any form. It should be noted that, for those of ordinary skill in the art, several changes and improvements can also be made without departing from the concept of the present invention. These all belong to the protection scope of the present invention.

[0047] The present invention provides a device for capturing golden apple snails and snail eggs, such as Figure 1-Figure 6 As shown, it includes a snail-proof pad 21, a trapping flower box 22 and a sleeve pile 23; the snail-proof pad 21, the trapping flower box 22 and the sleeve pile 23 are used in combination to ensure the best capture effect of the golden apple snail. In a preferred example, the trapping flower box is in the shape of a rectangular parallelepiped and has a height of 60 to 80 cm.

[0048] The trapping flower box 22 is installed on the sleeve pile 23 and is in contact with the revetment 24; the trapping flower box 22 can float up and down with the change of the external water level; specifically, the trapping flower box is fixed close to the upright revetment through the sleeve pile, the trapping flower box floats on the water surface, close to the water surface, and can float up and down with the change of the water level through the sleeve pile;

[0049] Anti-snail pads 21 are also installed on the revetment. Fine thorns are evenly distributed on the surface of the anti-snail pads 21, which can effectively prevent the golden apple snails from climbing up along the revetment to lay eggs. A trapping channel 5 is provided on the revetment, and the trapping channel 5 is connected to the trapping flower box 22. The anti-snail pads 21 are not provided in the trapping channel 5; the trapping channel 5 can be used for the golden apple snails to climb into the trapping flower box, that is, the trapping channel 5 is conducive to the golden apple snails climbing up, and the trapping channel 5 is directly connected to the trapping flower box. In a preferred example, the anti-snail pads 21 are distributed on the left and right sides of the trapping flower box, and the trapping channel 5 is only left directly below the trapping flower box 22. The width of the trapping channel 5 is 15 to 20 cm, which is convenient for the golden apple snails to climb up.

[0050] A one-way door 8 is installed in the trapping flower box. In a preferred example, the number of the one-way doors 8 is 2, and the two one-way doors 8 are symmetrically arranged. The one-way door 8 is installed on the trapping flower box 22 through a hinge 9. The golden apple snail can crawl into the trapping flower box 22 through the trapping channel 5 through the one-way door 8. The one-way door 8 can only be opened inwards. After the golden apple snail enters the flower box, the one-way door automatically closes, and the golden apple snail cannot escape after laying eggs, thereby achieving the purpose of capturing the golden apple snail and snail eggs. In a preferred example, a partition is installed in the middle of the trapping flower box, and the side wall of the partition is hinged to a stainless steel one-way door arranged horizontally. In this preferred example, the one-way door can only be opened to the inner cavity of the flower box, and the partition can prevent the one-way door from opening outwards. Once the golden apple snail enters the inner cavity of the trapping flower box, the one-way door automatically closes and cannot crawl out.

[0051] The sleeve pile 23 includes a first steel pipe pile 3 and a second steel pipe pile 4; the first steel pipe pile 3 is sleeved on the second steel pipe pile 4 and can move in the up and down directions, the second steel pipe pile 4 is inserted into the bottom of the bank, and the first steel pipe pile 3 is tightly connected to the trapping flower box 22. In a preferred example, the first steel pipe pile 3 is a DN50mm steel pipe pile, and the second steel pipe pile 4 is a DN32mm steel pipe pile.

[0052] The anti-snail thorn pad is made of polyvinyl chloride material, and is divided into a front and a back side. The back side 1 of the anti-snail thorn pad is a smooth surface that can be fixed on the revetment, and the bottom end is close to the mud surface; the front side 2 of the anti-snail thorn pad is evenly distributed with thorn-like structures; the principle that it is difficult for the golden apple snail to wriggle on the thorn tip with its ventral foot is used to prevent the golden apple snail from climbing along the revetment at will.

[0053] The device for capturing golden apple snails and their eggs also includes a net bag 7. A hook is arranged on the inner wall of the trapping flower box cavity. The net bag 7 is hung on the hook. Fresh plant leaves are placed in the net bag 7 to induce the golden apple snails to climb upwards. The net bag 7 can be replaced regularly by river maintenance workers.

[0054] A baffle plate 6 of about 30 cm long is fixed to the side wall of the trapping flower box 22, and a 5 cm thick wooden board is placed on the baffle plate 6; after the wooden board is opened, workers can clean the golden apple snails and snail eggs in the trapping flower box cavity; a flower pot can be placed on the wooden board to beautify the river landscape. An outward opening door is set on the front of the trapping flower box, which can be opened to clean the golden apple snails and snail eggs inside.

[0055] like Figure 3As shown, the one-way door 8 includes a fixed surface 11, a rotating cross bar 12, a shell 24 and a door body 14; the fixed surface 11 is provided with a screw hole 10, and the fixed surface 11 is fixedly connected to the inside of the trapping flower box 22 through the screw hole 10; the shell 24 is connected to the fixed surface 11, and the rotating cross bar 12 is installed in the shell 24, and an opening structure 13 is provided on the shell 24, and the end of the door body 14 passes through the opening structure 13 and is connected to the rotating cross bar 12 through a retaining spring. Specifically, the angle at which the one-way door can be opened is controlled by setting the width of the opening structure 13. In the natural state, the edge of the one-way door 14 is in a closed state close to 13. When the golden apple snail climbs into the trapping flower box and pushes the one-way door open, the rotating cross bar 12 rotates, and the one-way door opens inwards. After the golden apple snail enters the trapping flower box, the one-way door returns to the natural state and is closed. Due to the edge blocking and the control of the rotation angle of the rotating crossbar 12, the one-way door cannot be opened outwards, that is, the golden apple snail cannot climb out of the trapping flower box.

[0056] The device for capturing Pomacea canaliculata and its eggs also includes an escape prevention structure 15, such as Figure 4-Figure 6 As shown, the anti-escape structure 15 includes a mounting surface 16, a flexible portion 17 and spikes 19. The anti-escape structure 15 can be processed in one piece. The mounting surface 16 is adhered to the trapping flower box 22; the flexible portion 17 is a structure that is thick at the bottom and pointed at the top, and the pointed portion of the flexible portion 17 faces the same direction as the crawling direction of the golden apple snail entering the trapping flower box 22; one side of the flexible portion 17 is a smooth surface 18; the other side of the flexible portion 17 is provided with spikes 19; the free end of the spike 19 faces the same direction as the crawling direction of the golden apple snail entering the trapping flower box 22. The working principle of the anti-escape structure 15 is as follows: when the golden apple snail crawls into the flower box, the pointed portion naturally droops, the smooth surface 18 faces upward, and the smooth surface contacts the golden apple snail's ventral foot, which is more conducive to the golden apple snail crawling inward. When the golden apple snail crawls from inside the flower box to outside, the direction of the pointed part changes, and the spike 19 faces upward, which prevents the golden apple snail from climbing outward, thereby preventing the golden apple snail from escaping.

[0057] The present invention also provides a method for capturing Pomacea canaliculata and its eggs, which uses the device for capturing Pomacea canaliculata and its eggs; and further comprises the following steps:

[0058] S1. One or two months before the golden apple snail enters its peak reproductive period, the river water level is lowered to 10 to 15 cm below the normal water level, snail-proof mats are laid along the river, the normal water level of the river is restored, and the bottom of the snail-proof mats is ensured to be immersed below the normal water level of the river; specifically, the bottom of the snail-proof mats can be close to the mud surface of the riverbed to ensure that the golden apple snails cannot climb up along the revetment, thereby increasing the success rate of the device.

[0059] S2. Install trapping boxes based on the snail density surveyed in the previous year. Usually, one box can be installed every 200m. If the snail density is too high, it can be adjusted to one box every 150m.

[0060] S3. The trapping flower box is about 20 cm away from the normal water level of the river. Fresh plant leaves are arranged in the trapping flower box in advance, and seasonal flowers are arranged on the trapping flower box to beautify the river landscape.

[0061] S4. The golden apple snail needs to leave the water to lay eggs. It is difficult for it to crawl on the thorn tip with its ventral foot due to the restriction of the snail thorn-proof pad. It can only climb up through the reserved trapping channel 5 and enter the trapping flower box;

[0062] S5. River maintenance workers regularly clean and crush the golden apple snails and snail eggs in the flower box cavity, replace the fresh plant leaves in the flower box cavity, check the fixation of the anti-snail pads, and whether the one-way doors of the flower boxes can be opened normally.

[0063] The invention mainly traps the spawning golden apple snails by physical methods, and the method of use is simple, and the invention can be used as vertical greening to decorate and beautify the urban river. The invention is easy to install, and adopts physical methods to comprehensively prevent the golden apple snails from climbing and laying eggs and trap the adult snails and snail eggs, without pollution risks to the environment. In addition, the capture device has the effect of beautifying the hard revetment.

[0064] In the description of the present application, it should be understood that the terms "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0065] The above describes the specific embodiments of the present invention. It should be understood that the present invention is not limited to the above specific embodiments, and those skilled in the art can make various changes or modifications within the scope of the claims, which does not affect the essence of the present invention. In the absence of conflict, the embodiments of the present application and the features in the embodiments can be combined with each other arbitrarily.

Claims

1. A device for capturing golden apple snails and their eggs, characterized in that: It comprises a snail-proof pad (21), a trapping flower box (22) and a sleeve pile (23); The trapping flower box (22) is installed on the sleeve pile (23) and is in contact with the revetment (24); the trapping flower box (22) can float up and down with the change of the external water level; A snail-proof pad (21) is also installed on the revetment, a trapping channel (5) is arranged on the revetment, the trapping channel (5) is connected to the trapping flower box (22), and the snail-proof pad (21) is not arranged in the trapping channel (5); A one-way door (8) is installed in the trapping flower box, and the one-way door (8) enables the golden apple snail to pass through the trapping channel (5) and crawl into the interior of the trapping flower box (22).

2. The device for capturing golden apple snails and their eggs according to claim 1, characterized in that: The number of the one-way doors (8) is two, the two one-way doors (8) are symmetrically arranged, and the one-way door (8) comprises a fixed surface (11), a rotating cross bar (12), a shell (24) and a door body (14); The fixing surface (11) is provided with a screw hole (10), and the fixing surface (11) is fixedly connected to the inside of the trapping flower box (22) through the screw hole (10); The shell (24) is connected to the fixed surface (11), the rotating cross bar (12) is installed in the shell (24), an opening structure (13) is provided on the shell (24), and the end of the door body (14) passes through the opening structure (13) and is connected to the rotating cross bar (12) through a retaining spring.

3. The device for capturing golden apple snails and their eggs according to claim 1, characterized in that: It also includes an anti-escape structure (15), wherein the anti-escape structure (15) includes a mounting surface (16), a flexible portion (17) and a spike (19); The mounting surface (16) is connected to the trapping flower box (22); the flexible portion (17) is a structure with a thick bottom and a pointed top, and the pointed end of the flexible portion (17) faces the same direction as the crawling direction of the golden apple snail entering the trapping flower box (22); One side of the flexible portion (17) is a smooth surface (18); the other side of the flexible portion (17) is provided with spikes (19); The free end of the spike (19) faces the same direction as the crawling direction of the golden apple snail entering the trapping flower box (22).

4. The device for capturing golden apple snails and their eggs according to claim 1, characterized in that: The sleeve pile (23) comprises a first steel pipe pile (3) and a second steel pipe pile (4); the first steel pipe pile (3) is sleeved on the second steel pipe pile (4) and can move in the up and down directions, the second steel pipe pile (4) is inserted into the bottom of the bank, and the first steel pipe pile (3) is firmly connected to the trapping flower box (22).

5. The device for capturing golden apple snails and their eggs according to claim 1, characterized in that: The anti-snail thorn pad is divided into a front and a back side, the back side is fixed on the revetment, and the front side is evenly distributed with thorn-like structures.

6. The device for capturing golden apple snails and their eggs according to claim 1, characterized in that: A 30 cm long baffle (6) is fixed to the side wall of the trapping flower box (22), and a 5 cm thick wooden board is placed on the baffle (6).

7. The device for capturing golden apple snails and their eggs according to claim 1, characterized in that: It also comprises a net bag (7), a hook is arranged on the inner wall of the trapping flower box cavity, the net bag (7) is hung on the hook, and fresh plant leaves are placed in the net bag (7).

8. The device for capturing golden apple snails and their eggs according to claim 1, characterized in that: An outward-opening door is provided on the front of the trapping flower box.

9. The device for capturing golden apple snails and their eggs according to claim 1, characterized in that: The anti-snail thorn pads (21) are distributed on the left and right sides of the trapping flower box, and the trapping channel (5) is only left directly below the trapping flower box (22).

10. A method for capturing golden apple snails and their eggs, characterized in that: The device for capturing Pomacea canaliculata and its eggs according to any one of claims 1 to 9 further comprises the following steps: S1. One or two months before the golden apple snail enters its peak breeding period, lower the river water level to 10-15 cm below the normal water level, lay snail-proof mats along the river, restore the river water level to normal, and ensure that the bottom of the snail-proof mat is immersed below the normal water level of the river; S2. Install trapping boxes based on the snail density surveyed the previous year; S3. The trapping flower box is 20 cm away from the normal water level of the river. Fresh plant leaves are arranged in the trapping flower box in advance, and seasonal flowers are arranged on the trapping flower box to beautify the river landscape; S4. The golden apple snail needs to leave the water to lay eggs. It is restricted by the snail thorn-proof pad and it is difficult for it to use its ventral foot to crawl on the thorn tip. It can only climb up through the reserved trapping channel (5) and enter the trapping flower box. S5. River maintenance workers regularly clean and crush the golden apple snails and snail eggs in the flower box cavity, replace the fresh plant leaves in the flower box cavity, check the fixation of the anti-snail pads, and whether the one-way doors of the flower boxes can be opened normally.

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