CN217160908U

CN217160908U - River course shoal fushou snail prevention and cure device

Info

Publication number: CN217160908U
Application number: CN202220839146.5U
Authority: CN
Inventors: 李风波; 朱新丁; 李明
Original assignee: Zhejiang Academy of Agricultural Sciences
Current assignee: Zhejiang Academy of Agricultural Sciences
Priority date: 2022-04-11
Filing date: 2022-04-11
Publication date: 2022-08-12
Anticipated expiration: 2032-04-11

Abstract

The utility model relates to the field of biological control of external invasive water, in particular to a river channel shoal pomacea canaliculata control device, which comprises a frame and a net arranged on the frame, wherein the net is arranged around the side surface and the bottom surface of the frame, so that the inside of the net forms a semi-closed space which is used for feeding natural enemy organisms; the mesh size of the net positioned on the bottom surface of the frame is 2.0-6.0 cm; the upper part of the net is provided with an escape-proof structure for preventing natural enemy organisms in the semi-closed space from escaping. The utility model has the advantages that: the control device is arranged on the river channel shoal where the ampullaria gigas are abused, natural enemy organisms such as Chinese soft-shelled turtles or Chinese mitten crabs are placed in the control device, living space is kept away for the animals, the natural enemy organisms eat the ampullaria gigas in all weather, the number of ampullaria gigas groups is reduced, spawning behaviors of the ampullaria gigas are inhibited, manual real-time participation is not needed, the ampullaria gigas can be used for a long time, the labor cost for preventing and controlling the ampullaria gigas is reduced, and the control efficiency of the ampullaria gigas on the river channel shoal is improved.

Description

River course shoal fushou snail prevention and cure device

Technical Field

The utility model belongs to the technical field of external invasion water biological control and specifically relates to a river course shoal fortune longevity snail prevention and cure device.

Background

The Pomacea canaliculata is native to Amazon river basin in south America, belongs to the fresh water snails of the family Viridae in the phylum mollusca, and has an appearance similar to that of river snails. In 1981, ampullaria gigas were introduced into china as an economic animal for food, and then a stream of breeding hot tide was formed. However, Pomacea canaliculata is abandoned due to the loss of the market caused by problems such as bad taste. At present, the ampullaria gigas invade public water areas such as river channels and the like, and are liked to gather in shallow riverways and flood to cause disasters, so that aquatic plants in the riverways are damaged, and the red egg masses produced by the ampullaria gigas influence the landscape of the riverways. Although chemical prevention measures have a good control effect on ampullaria gigas, chemical prevention has great harm to the aquatic ecological environment and is not suitable for riverways. The current prevention and control measures are to artificially and periodically remove the ampullaria gigas egg masses along the river bank through organization, but the ampullaria gigas and the egg masses distributed on the river shoal do not have good methods for removing the ampullaria gigas and the egg masses. If adopt the manual work to pick up the spiral shell and remove the ovum, need the operation of launching, it is very inconvenient, need a large amount of manpower and materials, the cost of labor is high, and efficiency is also low.

SUMMERY OF THE UTILITY MODEL

In order to solve the problem, the utility model aims at providing a river course shoal pomacea canaliculata spiral shell prevention and treatment device goes out semi-closed space through frame and net circle for in the pomacea canaliculata spiral shell can get into semi-closed space, the semi-closed space can not flee from to inside natural enemy biology, predates pomacea canaliculata spiral shell and egg mass through natural enemy biology, has reduced the cost of labor that pomacea canaliculata spiral shell prevented and control, has improved river course shoal pomacea canaliculata spiral shell prevention and control efficiency.

In order to realize the purpose of the utility model, the following technical scheme is adopted for implementation:

a river course shoal ampullaria gigas prevention and treatment device comprises a frame and a net arranged on the frame, wherein the net is arranged around the side surface and the bottom surface of the frame, so that a semi-closed space is defined by the inside of the net, and the semi-closed space is used for feeding natural enemy organisms; the mesh size of the net positioned on the bottom surface of the frame is 2.0-6.0 cm; the upper part of the net is provided with an escape-proof structure for preventing natural enemy organisms in the semi-closed space from escaping.

Preferably, the frame comprises vertical rods and cross rods, the cross rods are arranged at the upper end and the lower end of each vertical rod, and the joints of the vertical rods and the cross rods are detachably connected together through fixing buckles.

Preferably, the net comprises an escape-proof net on the side face of the periphery of the frame and an isolation net on the bottom face, the escape-proof net is used for preventing organisms inside the net from directly leaving the semi-closed space, the isolation net is used for enabling the ampullaria gigas to smoothly enter the semi-closed space, and the escape-proof net and the isolation net are detachably connected to the frame through buckles.

Preferably, the mesh size of the escape-proof net is 1.0-2.0 cm, and the escape-proof net is a plastic net.

Preferably, the mesh size of the separation net is 2.0-6.0cm, and the separation net is made of iron wire.

Preferably, the anti-escape structure is that a smooth anti-escape plate is arranged on the upper part of the net along the extending direction of the net, and the height of the anti-escape plate is 30-50 cm.

Preferably, the escape-proof structure is that a plate which extends towards the inside of the semi-closed space and slightly inclines downwards is arranged at the upper part of the frame, and the plate extends inwards for 30-50 cm.

Preferably, an ecological floating island is arranged in the semi-closed space, a connecting line is arranged on the ecological floating island, the far end of the connecting line is arranged on the frame, and the length of the connecting line is 110-150% of the distance between the edge of the ecological floating island and the frame.

Preferably, two connecting lines are arranged on each ecological floating island and are respectively arranged at two opposite positions of the ecological floating island.

Preferably, a plurality of planting grooves are arranged on the top surface of the ecological floating island, and plants are planted in the planting grooves.

To sum up, the utility model has the advantages that: the control device is arranged on the river channel shoal where the ampullaria gigas are abused, natural enemy organisms such as Chinese soft-shelled turtles or Chinese mitten crabs are placed in the control device, living space is kept away for the animals, the natural enemy organisms eat the ampullaria gigas in all weather, the number of ampullaria gigas groups is reduced, spawning behaviors of the ampullaria gigas are inhibited, manual real-time participation is not needed, the ampullaria gigas can be used for a long time, the labor cost for preventing and controlling the ampullaria gigas is reduced, and the control efficiency of the ampullaria gigas on the river channel shoal is improved.

Drawings

Fig. 1 is a schematic structural diagram of a river channel shoal ampullaria gigas prevention and treatment device.

Fig. 2 is a schematic structural diagram of the river channel shoal ampullaria prevention and treatment device after the net is removed.

Detailed Description

As shown in fig. 1, a river shoal ampullaria gigas prevention and treatment device comprises a frame 1 and a net arranged on the frame 1, wherein the net is arranged around the side surface and the bottom surface of the frame 1, so that the inside of the net encloses a semi-closed space. In order to allow the ampullaria gigas to enter the semi-enclosed space, while the natural enemy organisms to escape from the semi-enclosed space as will be described later, the mesh size of the net located on the bottom surface of the frame 1 is 2.0-6 cm. When in use, the device is placed in a river shoal, so that the bottom of the device can be immersed in water, and the ampullaria gigas in the river can enter a semi-closed space from meshes of the net on the bottom surface; in order to eliminate the ampullaria gigas, a certain number of natural enemy organisms of the ampullaria gigas such as Chinese soft-shelled turtles or Chinese mitten crabs and the like are put in the semi-closed space, and due to the existence of the net, the natural enemy organisms cannot escape from the semi-closed space, so that the natural enemy organisms can prey on the ampullaria gigas all the day, the number of the groups of the ampullaria gigas is reduced, the oviposition behavior of the ampullaria gigas is inhibited, manual real-time participation is not needed, the ampullaria gigas can be used for a long time, the labor cost for preventing and treating the ampullaria gigas is reduced, and the efficiency for preventing and treating the ampullaria gigas in a shallow river channel is improved.

As shown in fig. 2, the frame 1 comprises a vertical rod 11 and a cross rod 12, wherein the cross rod 12 is disposed near the upper end and the lower end of the vertical rod 11, and the joints of the vertical rod 11 and the cross rod 12 are detachably connected together by a fixing buckle (not shown in the figure). The frame 1 is generally rectangular in shape for ease of installation, but other common geometric appearances of the frame 1, such as circular, triangular, quadrilateral, pentagonal, hexagonal, etc., are not precluded. In order to increase the support strength of the uprights 11 and the crosspieces 12, stiffening rods (not shown in the figures) may be provided at suitable positions.

As shown in fig. 1, the net comprises an anti-escape net 2 on the side surface of the periphery of a frame 1 and an isolation net 3 on the bottom surface, the anti-escape net 2 is used for preventing organisms inside the net from directly leaving a semi-closed space, the isolation net 3 is used for enabling ampullaria gigas to smoothly enter the semi-closed space, and the anti-escape net 2 and the isolation net 3 are detachably connected to the frame 1 through buckles (not shown in the figure). The mesh size of the escape-proof net 2 is 1-2 cm, and the escape-proof net 2 is a plastic net, so that the plastic net is not easy to deform due to the fact that the periphery of the net is easily impacted by river water flow, and the cost is low. The mesh size of the isolation net 3 is 2.0-6.0cm, namely, the mesh size of the isolation net 3 is 4-6 cm for the trionyx sinensis and 2.5-3cm for the eriocheir sinensis, and the isolation net 3 is made of iron wire net, so that the bottom surface is favorably spread.

As shown in fig. 1 and 2, it is noted that both the trionyx sinensis and the eriocheir sinensis have strong climbing ability, so that an anti-escape structure is arranged at the upper part of the net to prevent the trionyx sinensis and the eriocheir sinensis from directly climbing out of the semi-closed space along the net at the side surface, the anti-escape structure can be formed by arranging a smooth anti-escape plate 4 at the upper part of the net along the direction in which the net extends, and the anti-escape plate 4 generally needs to have a length of 30-50 cm so as to achieve a good anti-escape effect. As a deformation of the anti-escape plate 4, the anti-escape structure can also be a plate which is arranged on the upper part of the frame 1, extends towards the inside of the semi-closed space and slightly inclines downwards, and the plate needs to extend inwards by 30-50 cm, so that certain anti-climbing performance can be achieved.

As shown in fig. 2, in order to provide a living space for natural enemy organisms to avoid and meet the habitation habit of the natural enemy organisms, an ecological floating island 5 is arranged in the semi-closed space, and the material of the ecological floating island 5 can be foam boards, wood boards, bamboo boards and other materials capable of floating on the water surface. The ecological floating island 5 is provided with a connecting line 51, the far end of the connecting line 51 is arranged on the frame 1, and the length of the connecting line 51 is greater than the distance between the edge of the ecological floating island 5 and the frame, generally speaking, the length of the connecting line 51 may be 110-150% of the distance between the edge of the ecological floating island 5 and the frame 1, so as to limit the movement of the ecological floating island 5 to a certain extent. More specifically, two connecting lines 51 are disposed on each ecological floating island 5 and are disposed at two opposite positions of the ecological floating island 5, respectively, so as to better control the position of the ecological floating island 5. When the ecological floating island is used, the ecological floating island 5 floats on the water surface and can float according to the height of the water surface, and meanwhile, due to the action of the connecting line 51, the ecological floating island 5 can move to a certain degree under the action of water flow but cannot move randomly. Meanwhile, plants can be arranged at the top of the ecological floating island 5, so that the living quality of the natural enemy organisms is improved, the normal life of the natural enemy organisms is guaranteed, and the amazonian snails are effectively eaten.

As shown in fig. 2, the ecological floating island 5 is plate-shaped, a plurality of planting grooves are arranged on the top surface of the ecological floating island 5, and plants, generally aquatic plants, are planted in the planting grooves. The connecting lines 51 are disposed on both left and right sides of the ecological floating island 5.

As shown in fig. 2, when the frame is polygonal, especially rectangular, the device can be used side by side, and a plurality of devices are arranged side by side, so that two adjacent devices can share one frame, and the whole prevention range can be increased, which is beneficial to improving the prevention efficiency of the river shoal.

Claims

1. The river channel shoal ampullaria gigas prevention and treatment device is characterized by comprising a frame (1) and a net arranged on the frame (1), wherein the net is arranged around the side surface and the bottom surface of the frame (1), so that the inside of the net forms a semi-closed space, and the semi-closed space is used for feeding natural enemy organisms; the mesh size of the net positioned on the bottom surface of the frame (1) is 2.0-6.0 cm; the upper part of the net is provided with an escape-proof structure for preventing natural enemy organisms in the semi-closed space from escaping.

2. The river channel shoal ampullaria gigas prevention and treatment device as claimed in claim 1, wherein the frame (1) comprises an upright (11) and a cross bar (12), the cross bar (12) is arranged near the upper end and the lower end of the upright (11), and the joints of the upright (11) and the cross bar (12) are detachably connected together through fixing buckles.

3. The river channel shoal ampullaria gigas prevention and treatment device is characterized in that the net comprises an escape-proof net (2) on the peripheral side surface of the frame (1) and a separation net (3) on the bottom surface, the escape-proof net (2) is used for preventing organisms inside the net from directly leaving the semi-closed space, the separation net (3) is used for enabling the ampullaria gigas to smoothly enter the semi-closed space, and the escape-proof net (2) and the separation net (3) are detachably connected to the frame (1) through buckles.

4. The river channel shoal ampullaria gigas prevention and treatment device as claimed in claim 3, wherein the mesh size of the escape-proof net (2) is 1.0-2.0 cm, and the escape-proof net (2) is a plastic net.

5. The river course shoal ampullaria gigas prevention and treatment device as claimed in claim 3, wherein the mesh size of the separation net (3) is 2.0-6.0cm, and the separation net (3) is made of a wire mesh.

6. The river course shoal ampullaria gigas prevention and treatment device as claimed in claim 1, wherein the escape prevention structure is that a smooth escape prevention plate (4) is provided at the upper part of the net in the direction in which the net extends, and the height of the escape prevention plate (4) is 30-50 cm.

7. The river course shoal ampullaria gigas prevention and treatment device as claimed in claim 1, wherein the escape prevention structure is that a plate which extends towards the inside of the semi-enclosed space and slightly inclines downwards is arranged at the upper part of the frame (1), and the plate extends inwards for a length of 30-50 cm.

8. The river channel shoal ampullaria gigas prevention and treatment device as claimed in claim 1, wherein an ecological floating island (5) is arranged in the semi-closed space, a connecting line (51) is arranged on the ecological floating island (5), the far end of the connecting line (51) is arranged on the frame (1), and the length of the connecting line (51) is 110-150% of the distance between the edge of the ecological floating island (5) and the frame (1).

9. The river channel shoal ampullaria gigas prevention and treatment device as claimed in claim 8, wherein two connecting lines (51) are arranged on each ecological floating island (5) and are respectively arranged at two opposite positions of the ecological floating island (5).

10. The river course shoal ampullaria gigas prevention and treatment device as claimed in claim 8, wherein a plurality of planting grooves are arranged on the top surface of the ecological floating island (5), and plants are planted in the planting grooves.