Ecological three-dimensional stocking structure for gastropods in rivers and lakes

Abstract

The utility model relates to the technical field of ecological stocking of aquatic animals, in particular to an ecological river and lake gastropod three-dimensional stocking structure and a stocking method. The stocking structure comprises a spiral fixing base and is composed of a spiral structure, a top cover, a base and a feeding channel, the feeding channel is formed in the axial center of the spiral structure, a plurality of holes are formed in the peripheral wall of the feeding channel and communicated with the spiral structure, and the two ends of the feeding channel are detachably connected with the top cover and the base respectively; the plurality of spiral fixing bases can be transversely or longitudinally spliced and combined; and the mesh enclosure is detachably mounted on the periphery of the spiral fixing base and wraps the spiral structure. The stocking structure is suitable for most ecological rivers and lakes, the detachable structure is convenient to use, and the activity space of the gastropods is increased. Through scientific structural design, stocking site selection and daily management, efficient and eco-friendly gastropod stocking is achieved, and sustainable development of species resource quantity recovery and ecological restoration is achieved.

Description

Technical Field

[0001] This utility model relates to the field of ecological aquatic animal rearing technology, specifically to a three-dimensional rearing structure for gastropods in ecological rivers and lakes. Background Technology

[0002] High-altitude lakes suffer from severe eutrophication due to low water exchange rates and the influx of non-point source pollutants from urban and agricultural sources into the lakes via surface runoff. The water and sediment are polluted to varying degrees. Gastropods, as an important component of benthic animals, play a vital role in energy flow, material cycling, and maintaining aquatic ecological balance. However, due to water pollution, aquatic ecosystem degradation, invasive species, and increased grazing pressure, the wild gastropod population in natural rivers and lakes has significantly decreased. Existing research indicates that gastropods play a significant role in purifying water quality and controlling algal density. Appropriate gastropod densities can also effectively remove ammonium, nitrate, and nitrite from the water, reduce pollutant concentrations, and improve water transparency. In eutrophic freshwater lakes, releasing gastropods and bivalves to improve eutrophication and control phytoplankton density is a common ecological manipulation measure to promote lake ecological restoration. However, direct release often proves ineffective due to poor baseline water conditions and grazing pressure.

[0003] Existing gastropod rearing structures are mostly flat-plate or wire mesh cage structures, and are primarily designed and manufactured for intensive gastropod farming. These structures have low utilization rates of the water body's three-dimensional space, limiting the farming efficiency and water purification capacity of gastropods. There are currently no specific devices suitable for gastropod stocking in ecological river and lake management processes. Therefore, it is necessary to design appropriate gastropod stocking devices tailored to the specific needs of ecological river and lake management. Summary of the Invention

[0004] To improve the stocking and propagation effect of gastropods and thus improve the ecological water environment of rivers and lakes, this utility model provides a three-dimensional stocking structure for gastropods in ecological rivers and lakes, comprising:

[0005] The spiral fixation substrate consists of a spiral structure, a top cover, a base, and a feeding channel. The spiral structure provides growth space for gastropods. The feeding channel is located at the axial center of the spiral structure. Several pores are opened on the peripheral wall of the feeding channel, which are connected to the spiral structure. The two ends of the feeding channel are detachably connected to the top cover and the base, respectively. Multiple spiral fixation substrates can be spliced ​​and combined horizontally or vertically.

[0006] The mesh cover is detachably installed around the spiral anchor base to enclose the spiral structure.

[0007] Furthermore, the spiral structure is a one-piece helical blade type, with the blade projection being square, and gastropods attaching to each layer of blades.

[0008] Furthermore, the surface of the spiral blades is textured to simulate a sandy or gravelly substrate.

[0009] Furthermore, the dimensions of the top cover and the base are consistent with the projected size of the blades in the spiral structure.

[0010] Furthermore, the lower end of the feeding channel is inserted to 1 / 2 of the base, and the upper end extends to 1 / 2 of the thickness of the top cover. The thickness of the top cover and the base are the same. The feeding channel, together with the top cover and the base, achieves longitudinal stacking between the spiral fixing bases. The two ends of the mesh cover are respectively snapped into the top cover and the base. After the spiral fixing bases are laterally aligned, adjacent top covers are snapped into each other, and the bases are also snapped into each other, thereby achieving lateral connection.

[0011] Furthermore, the helical anchoring group is made of one of the following materials: polyhydroxyalkanoate, polylactic acid, or chitosan.

[0012] Beneficial effects

[0013] The three-dimensional stocking structure designed in this invention is applicable to most ecological rivers and lakes. Its horizontally and vertically expandable structure increases the actual three-dimensional activity space for gastropods, enabling them to cope with hydrological fluctuations and improve water utilization through spatial adjustments. The roughened surface treatment of the stocking structure simulates the physical conditions of the substrate, creating attachment conditions for organisms such as algae, microorganisms, and humic debris, providing natural food resources for gastropods. This invention achieves efficient and eco-friendly gastropod stocking, realizing sustainable development through the parallel restoration of species resources and ecological restoration. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of a spiral fixation base in one embodiment;

[0015] Figure 2 This is a schematic diagram of a spiral-type fixing base (excluding the top cover and base) in another embodiment;

[0016] Figure 3 This is a schematic diagram of the outer mesh structure;

[0017] Figure 4 This is a schematic diagram of the connection point snap-fit ​​structure;

[0018] Figure 5 This is a schematic diagram of the base structure;

[0019] The labels in the diagram are as follows: 1-spiral fixing base, 2-mesh cover, 11-spiral structure, 12-top cover, 13-base, 14-feeding channel, 3-clamping structure, 31-slot, 32-clamping part. Detailed Implementation

[0020] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0021] Example

[0022] In one embodiment, an ecological river and lake gastropod three-dimensional rearing structure includes a spiral anchorage 1, which is a detachable structure, such as... Figure 1 As shown, it consists of a spiral structure 11, a top cover 12, a base 13, and a feeding channel 14. The spiral structure 11 provides growth space for gastropods. The spiral structure is a one-piece spiral blade type, with gastropods attaching to each layer of blades. The spacing between the blades is mainly determined according to the size of the adult gastropod, generally 2.5-3 times the height of its adult shell. The spiral blade type provides effective habitat space for gastropods and also promotes their movement, which is beneficial to their growth.

[0023] The spiral structure 11 has a feeding channel 14 at its axial center. The feeding channel 14 has several openings on its circumferential wall, which are connected to the spiral structure 11 to facilitate the feeding of food and medicine into the spaces between the leaves. The two ends of the feeding channel 14 are detachably connected to the top cover 12 and the base 13, respectively. The top cover 12 and the base 13 seal the two ends of the spiral structure 11, ensuring the safety of gastropods during rearing. The detachable design also facilitates assembly, cleaning, and feeding operations.

[0024] The stocking structure also includes an outer net cover 2, which is detachably installed around the spiral anchoring base 1, covering the spiral structure 11. Algae can adhere to the net cover 2, ensuring the basic nutrition of gastropods during stocking and also ensuring the safety of the gastropods. The net cover 2 and the spiral anchoring base 1 are connected in a detachable manner, facilitating the release of gastropods and the cleaning and maintenance of the net cover 2.

[0025] In one embodiment, such as Figure 2 As shown, the longitudinal projection of the blades in the spiral structure is a square. The dimensions of the top cover 12 and the base 13 are the same as the projected size of the blades in the spiral structure 11, which is also a square. This maximizes the use of space for gastropod growth.

[0026] The feeding channel 14 is detachably connected to the top cover 12 and the base 13 at both ends using methods such as plug-in or snap-fit. Specifically, the lower end of the feeding channel 14 is inserted to half the length of the base 13, and the upper end extends beyond half the thickness of the top cover 12. The top cover 12 and the base 13 have the same thickness. A through-hole is formed in the center of the top cover 12 and the base 13. The feeding channel 14 is a circular tube with open ends. During longitudinal assembly, the upper end of the feeding channel 14 of the lower spiral fixing base extends out of the top cover 12 and then is inserted into the base 13 of the upper spiral fixing base. In this way, the upper and lower adjacent feeding channels 14 are vertically aligned and connected, thereby achieving the longitudinal multi-level stacking of the spiral fixing bases 1 through the cooperation of the feeding channel 14 with the top cover 12 and the base 13. The cross-sectional shape of the feeding channel 14 can also be rectangular, rhomboid, trapezoidal, or other irregular polygonal shapes, and there are no restrictions here.

[0027] Net cover 2 as follows Figure 3 As shown, it is set as a rectangle, with a total of 4 pieces. The two ends of the mesh cover 2 are respectively snapped to the top cover 12 and the base 13, covering the four sides of the spiral structure 11.

[0028] Specifically, the mesh cover 2 has snap-fit ​​structures 3 at both ends, one end having a slot 31 and the other end having a protruding snap-fit ​​part 32. Corresponding snap-fit ​​structures are provided around the base 13 and the top cover 12. The protruding snap-fit ​​part 32 in the snap-fit ​​structure 3 is inserted into the slot 31, forming a... Figure 4 The secure connection shown secures both ends of the four mesh covers 2. The snap-fit ​​method can be other methods without restriction, or it is not limited to snap-fit. Common detachable methods such as threaded connections can also be used, which will not be elaborated here.

[0029] like Figure 5 As shown, on the four sides of the base 13, slots 31 are provided on one pair of adjacent sides, and snap-fit ​​parts 32 are provided on the other two sides. Corresponding structures are provided on the sides of the top cover 12 and the base 13; that is, snap-fit ​​parts 32 are provided on the sides of the slots 31 on the top cover 12 corresponding to the base 13, and slots 31 are provided on the sides of the snap-fit ​​parts 32 on the top cover 12 corresponding to the base 13. When performing horizontal splicing, the spiral fixing bases 1 are aligned horizontally. At this time, the mesh cover 2 is not assembled around each spiral fixing base 1. The slots 31 and snap-fit ​​parts 32 are exactly aligned between adjacent bases 13, and the snap-fit ​​structure is also formed between adjacent top covers 12, achieving horizontal snap-fit ​​between the spiral fixing bases 1. After all the spiral fixing bases 1 are connected, the mesh cover 2 is assembled on the outermost side, thus achieving horizontal connection between the spiral fixing bases 1.

[0030] As can be seen from the above embodiments, the stocking structure achieves a detachable modular assembly method, enabling horizontal splicing and vertical stacking of the stocking structure to form a larger stocking space and meet stocking requirements. Through the three-dimensional stocking structure in this example, the stocking density of gastropods per unit area is increased, improving the utilization rate of water space.

[0031] In addition, to more realistically simulate the living environment of gastropods, millimeter-level textured surfaces can be sprayed onto the spiral structure 11 to create a rough structure that simulates a sandy substrate, increasing the area of ​​biological attachment substrate and improving the attachment effect of surrounding algae and microorganisms.

[0032] Since the stocking equipment is used in water, it is necessary to choose environmentally friendly materials, such as polyhydroxyalkanoates (PHA), polylactic acid (PLA), or natural polymers such as chitosan. The surface can also be coated with an eco-friendly coating containing non-toxic substances to reduce long-term environmental pollution and ecological impact.

[0033] The above-mentioned stocking device is used as follows: For rivers and lakes to be treated, determine the stocking requirements, the species and quantity of gastropods, and select suitable water areas for stocking. Based on the determined stocking quantity, select the number of stocking structures and the assembly method. After assembly, place the device in the water to allow algae to attach and cultivate food organisms. When the water is nutrient-poor and the food organism attachment effect is poor, algae seeds or nutrient substrate can be added through the upper end of the feeding channel to accelerate algae attachment. Then, open the outer net cover and release the gastropods. Throughout the stocking process, monitor the food, disease, surrounding submerged plants, and gastropod density, and take corresponding measures to ensure the stocking effect.

[0034] The use of gastropods for river and lake ecological restoration effectively improves the three-dimensional purification capacity of water bodies. In addition, the metabolic waste produced by free-range animals is effectively absorbed and utilized by the surrounding submerged vegetation, reducing its spread into natural water bodies.

[0035] The specific embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present invention.

Claims

1. An ecological river and lake gastropod three-dimensional free-range structure, characterized in that, include: The spiral fixation substrate consists of a spiral structure, a top cover, a base, and a feeding channel. The spiral structure provides growth space for gastropods. The feeding channel is located at the axial center of the spiral structure. Several pores are opened on the peripheral wall of the feeding channel, which are connected to the spiral structure. The two ends of the feeding channel are detachably connected to the top cover and the base, respectively. Multiple spiral fixation substrates can be spliced ​​and combined horizontally or vertically. The mesh cover is detachably installed around the spiral anchor base to enclose the spiral structure.

2. The ecological river and lake gastropod three-dimensional stocking structure as described in claim 1, characterized in that, The spiral structure is a one-piece spiral blade, with the blade projection being square, and gastropods attaching to each layer of blades.

3. The ecological river and lake gastropod three-dimensional stocking structure as described in claim 1 or 2, characterized in that, The surface of the spiral blades has a textured surface to simulate a sandy or gravelly substrate.

4. The ecological river and lake gastropod three-dimensional stocking structure as described in claim 1, characterized in that, The dimensions of the top cover and base are consistent with the projected size of the blades in the spiral structure.

5. The ecological river and lake gastropod three-dimensional stocking structure as described in claim 1, characterized in that, The lower end of the feeding channel is inserted to 1 / 2 of the base, and the upper end extends to 1 / 2 of the thickness of the top cover. The thickness of the top cover and the base are the same. The feeding channel, together with the top cover and the bottom cover, achieves the longitudinal stacking of the spiral fixed base. The two ends of the mesh cover are respectively snapped into the top cover and the base. After the spiral fixed bases are laterally aligned, the adjacent top covers are snapped into each other, and the bases are also snapped into each other, thereby achieving lateral connection.

6. The ecological river and lake gastropod three-dimensional stocking structure as described in claim 1, characterized in that, The helical anchoring group is made of one of the following materials: polyhydroxyalkanoate, polylactic acid, or chitosan.

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