Novel ampullaria gigas trapping device

Abstract

The utility model discloses a novel ampullaria gigas trapping device which comprises a trapping door curtain and a trapping box, a plurality of trapping openings are formed in the four faces of the outer side of the trapping box, trapping opening frames are arranged on the outer sides of the trapping openings, and the trapping door curtain which can be overturned inwards is arranged on the trapping opening frames through hinge pin rods. In consideration of environmental protection, a trapping strategy is adopted, a box body is manufactured, baits favored by the ampullaria gigas are placed in the middle of the bottom of the box body, the ampullaria gigas is lured to enter, a one-way door structure is arranged, the adult ampullaria gigas can only enter but not exit, and the one-way door is in a door curtain mode and can be opened and closed, so that field snails can freely enter and exit from gaps of the door curtain, and the adult snails are captured and cannot breed. The young pomacea canaliculata grows and continues to be captured, so that the pomacea canaliculata is controlled and killed, trapping openings are formed in the four faces, the trapping efficiency is high, and the trapping openings are sealed through trapping door curtains.

Description

TECHNICAL FIELD

[0001] The utility model relates to apple snail trapping device related field, concretely is a kind of novel apple snail trapping device. BACKGROUND

[0002] As a kind of world invasion biology, apple snail is listed in the list of 100 malignant foreign invasive species in the world by World Conservation Union (IUCN) in 2000, and it is the only freshwater snail among them. In 2003, the original State Environmental Protection Administration listed apple snail as the first batch of invasive alien species in China, and it is one of the 16 most harmful alien species (Huang Danan et al., 2018). In 2022, it was included in the "List of Key Management Alien Invasive Species" issued by the Ministry of Agriculture and Rural Affairs. The harm of apple snail mainly reflects in three aspects of agricultural production, biodiversity and human health: harm to crops, cause yield reduction; destroy biodiversity, affect ecosystem function; spread diseases;

[0003] Existing control methods:

[0004] (1) Agricultural control: adopt shallow water irrigation, prevent apple snail from spreading with water flow caused by large water irrigation. Drain water in time and dry field to reduce the survival rate of young snails. In winter, repair ditch and clean silt to reduce the base number of apple snail after winter. In rice field where apple snail occurs seriously, water can be changed into dry land or water and dry land can be alternately used to kill snails.

[0005] (2) Physical control: install barrier net at the entrance of irrigation canal and the inlet and outlet of rice field to prevent apple snail from entering field with water. Insert wood or bamboo strips in field to attract apple snail to lay eggs, and remove and destroy egg mass regularly.

[0006] (3) Biological control: adopt rice and duck co-cultivation mode to use duck to prey apple snail. Put aquatic animals such as grass carp and carp in rice field to prey apple snail.

[0007] (4) Chemical control: use tetramic acid granules, niclosamide ethanolamine salt wettable powder or tea seed cake to control. Strictly use according to pesticide label instruction, and implement pesticide use safety interval. Prohibit using pesticide to control in fish and shrimp breeding field to prevent pesticide damage to aquatic animals.

[0008] The effect and efficiency of current means to control apple snail need to be improved: first, apple snail is a living body, and its climbing ability is good, so agricultural control cannot control apple snail at source; physical control has time limit for removing eggs, and apple snail can lay eggs on wall and climb branches, so barrier net cannot block apple snail; biological control finds that duck and fish do not like this snail according to some data; chemical control will cause new environmental pollution, and also miskill original species. UTILITY MODEL CONTENT

[0009] The utility model discloses a novel apple snail trapping device to solve the effect and efficiency of preventing and treating apple snail in the foregoing background art need to be promoted, agricultural prevention and treatment can not control apple snail from the source, physical prevention and treatment have time limit for egg removal, and apple snail egg laying can climb wall and branch, so the barrier net can not block apple snail, biological prevention and treatment find that duck and fish do not like this snail, chemical prevention and treatment can cause new environmental pollution and also can mislead original species.

[0010] To realize above-mentioned purpose, the utility model provides the following technical scheme: a novel apple snail trapping device, including trapping door curtain and trapping box, four sides of the outside of trapping box are equipped with a plurality of trapping ports, the outside of trapping port is equipped with trapping port frame, the trapping port frame is equipped with the trapping door curtain that can turn inwards through the hinge pin.

[0011] In further embodiments, also include float, the bottom of float is equipped with float fixed rod, and float fixed rod is rotationally connected with trapping door curtain.

[0012] In further embodiments, the trapping box is provided with a blocking rod for blocking the trapping door curtain.

[0013] In further embodiments, the top of the trapping box is provided with a ventilation hole, the bottom of the trapping box is provided with a weight layer, and the top corner of the trapping box is provided with a hanging rope ring.

[0014] Compared with the prior art, the utility model has the beneficial effects that:

[0015] 1, the utility model considers environmental protection, adopts trapping strategy, manufactures a box, and places the bait that apple snail likes in the middle of the bottom, induces apple snail to enter, sets up one-way door structure, lets adult apple snail only enter and can not exit, and the one-way door is the door curtain mode, can open and close, so that the field snail can enter and exit freely through the door curtain gap, and adult snail is captured and can not breed, and young snail grows up and continues to be captured, thereby controlling and eliminating apple snail.

[0016] 2, the utility model is equipped with trapping port on four sides, and the trapping efficiency is higher, and the trapping door curtain is sealed at the trapping port, and the float is provided with float fixed rod, and the trapping door curtain can be self-balanced controlled through the float, so that the trapping door curtain can be prevented from opening under the action of gravity, and the blocking effect is improved.

[0017] 3, through the decoy into the golden apple snail, set one-way door, only in can't out, at the same time leave a certain gap to ensure the local native snail and small fish and shrimp free in and out, to avoid the mis-killing, box cost is low, simple to manufacture, convenient to place, do not need to guard, can be placed for many days, for the golden apple snail quantity is different and places different quantity of trap; The depth of the trap can be adjusted, which can be placed in the water area far from the water bank through the frame rod, can be placed by floating ball suspension, through the lower cost, reduce the manpower, material and financial resources burden of golden apple snail management. BRIEF DESCRIPTION OF DRAWINGS

[0018] Fig. 1 It is a structural schematic view of the utility model;

[0019] Fig. 2 It is a structural schematic view of the utility model single trap door curtain installation.

[0020] In the drawing: 1, floating; 2, floating fixed rod; 3, trap door curtain; 4, hinge pin; 5, blocking rod; 6, trap mouth frame; 7, trap box. PREFERRED EMBODIMENT

[0021] The technical scheme in the embodiments of the utility model will be clearly and completely described in combination with the drawings in the embodiments of the utility model, apparently, the described embodiments are only a part of the embodiments of the utility model, not all the embodiments.

[0022] Please refer to Figs. 1-2 The utility model provides an embodiment: a novel golden apple snail trapping device, including trap door curtain 3 and trap box 7, the top of trap box 7 is equipped with air hole, the bottom of trap box 7 is equipped with weighting layer, the top corner of trap box 7 is equipped with hanging rope ring, the four sides of the outside of trap box 7 are equipped with a plurality of trap mouth, the outside of trap mouth is equipped with trap mouth frame 6, trap mouth frame 6 is equipped with the trap door curtain 3 that can be turned inwards through hinge pin 4, the inside of trap box 7 is provided with the blocking rod 5 of trap door curtain 3.

[0023] Also include floating 1, the bottom of floating 1 is equipped with floating fixed rod 2, floating fixed rod 2 is rotationally connected with trap door curtain 3.

[0024] Structure material and manufacture: the trap is designed into closed box structure, the box material can be acrylic, plastic and other materials not easy to be corroded, the hole can be made or find the perforated plate, to ensure that the box sinks into the water bottom and promotes the convenience, the box opening (round hole, square hole can be) guarantees good air permeability and water permeability, the box bottom adds a proper amount of cement block and the like counterweight, increases the stability. The box material can be hot-bent into shape, the joint uses ultrasonic welding or bonding method, the accessory does not bear large load, can use bonding method to manufacture.

[0025] The opening and closing mechanism of the trap is set in a curtain mode, and is opened and closed by a rotating shaft fixed to the box (the rotating shaft can be arranged inside, outside or in the middle of the curtain), and the top is arranged outside the box and higher than the door frame of the box. This structure prevents the curtain from opening from the inside to the outside, and the curtain is distributed like a suspended fence with a suspended height of about 20-50 mm and a gap of about 5-30 mm. The suspended height and gap can ensure that the original field snails can freely enter and exit, and the size of the apple snail is limited in height, so the curtain cannot be opened from the inside to the outside, thereby achieving targeted trapping of apple snails. Under normal circumstances, the curtain will be locked from the inside to the outside due to its own weight. However, when one side of the box is tilted, the door on the corresponding side will open inward due to its own weight. The gap at the bottom of the curtain can cause the internal apple snails to escape. To prevent this from happening, a float needs to be arranged outside the curtain below the rotating shaft. The float is installed on the curtain through a fixed rod and the rotating shaft, and can rotate freely to ensure that when the box is tilted, the float will pull the curtain back to the locked position through the buoyancy of the float. The float fixed rod needs to be rigid and correctly directed, and can also avoid entanglement.

[0026] Reeling and use: The depth can be adjusted by ropes (it is recommended to use nylon ropes with good corrosion resistance) fixed to the top corners of the box. According to the water body, a floating ball and a bamboo rod used for fish farming can be used to achieve suspension and placement distance. The area can be selected as an apple snail egg gathering area, or a riverbank, a dense water grass area, to improve the capture rate. The bait can use fish bait or rice. The trapping time can be long or short, and even if the bait deteriorates, it will still have an attractive force on the snails.

[0027] Working principle: When in use, the trapping food is added to the trap box 7, the trap box 7 is guided to the bottom of the water through the anti-corrosion rope, the trap door 3 is sealed to the trap opening, when the apple snail smells the food, it will push the trap door 3 from outside to inside, and the trap door 3 will be opened inward under the action of the hinge pin 4, so that the apple snail enters the trap box 7. Since the trap door 3 cannot be opened from the inside to the outside, the entering apple snail cannot escape from the trap box 7, thereby completing the trapping. The floating ball 1 can prevent the trap door 3 from opening under the action of gravity in the tilted state, and the floating ball 1 will tilt to the other side, and then the floating ball fixed rod 2 will pull the trap door 3 to adhere to the trap opening.

[0028] It is apparent for a person skilled in the art that the present application is not restricted to the details of the above exemplary embodiments, but that it can be implemented in other concrete forms without departing from the spirit or the essential characteristics of the present application. Therefore, the embodiments should be considered as exemplary only, and not limiting, the scope of the present application being defined by the appended claims rather than the above description, and all changes coming within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference signs in the claims should not be construed as limiting the claims concerned.

Claims

1. A novel snail and periwinkle trapping device comprising a trapping curtain (3) and a trapping box (7), characterized in that, The four sides of the trap box (7) are provided with a plurality of trapping openings, and the outer side of the trapping opening is provided with a trapping opening frame (6), and the trapping opening frame (6) is provided with an inwardly tiltable trapping door curtain (3) through a hinge pin (4).

2. The new type of apple snail trapping device according to claim 1, characterized in that, Further comprising a float (1), the bottom of the float (1) is provided with a float fixing rod (2), and the float fixing rod (2) is rotationally connected with the trapping door curtain (3).

3. The new type of apple snail trapping device according to claim 1, characterized in that, The trapping box (7) is provided with a blocking rod (5) for blocking the trapping door curtain (3).

4. The new type of apple snail trapping device according to claim 1, characterized in that, The top of the trapping box (7) is provided with a breathable hole, the bottom of the trapping box (7) is provided with a heavy layer, and the top corner of the trapping box (7) is provided with a hanging rope ring.

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