Test device for researching feeding habit of eel fry

Abstract

The utility model discloses a test device for researching feeding habits of eel fry and a using method thereof, the test device comprises a transparent test barrel, a plurality of shading materials with different light transmittances, a food storage device, a water pump, a temperature controller, a control display and a camera, the water pump is detachably fixed on the inner side surface of the test barrel; the temperature controller is arranged in the experiment barrel and is connected to the control display through a circuit, and the set temperature of the temperature controller is adjusted and controlled through the control display; the camera is arranged above the experiment barrel, the angle of the camera can be adjusted, the camera is connected to the control display, and the angle of the camera is controlled through the control display to achieve all-directional shooting and recording and visually present eel larva feeding habit information shot by the camera. The feeding habit of the eel fry can be comprehensively and coherently observed and shot.

Description

Technical Field

[0001] The utility model belongs to the field of fish feeding habits research, and relates to an experimental device for studying the feeding habits of eel larvae. Background Art

[0002] Artificial propagation of eels is a global problem, and no breakthrough has been achieved, which seriously restricts the development of eel farming. The difficulty lies in the study of the metamorphosis and nutritional requirements of eel larvae. In recent years, with the control of the capture of wild eel larvae, the demand for artificial eel fry in aquaculture has increased dramatically. By studying the feeding habits of eel larvae, we can understand important information such as the feeding behavior, bait selection, environmental requirements and circadian rhythm of eel larvae at different developmental stages, and provide guidance for the development of palatable bait for eel larvae, feeding technology research and development, feeding environment requirements, and large-scale larvae breeding. At present, although preliminary research has been conducted in indoor pools, there is a lack of special feeding habit research equipment. The observation of the feeding behavior of eel larvae mainly depends on the daily regular inspections of the experimenters, and there is a lack of comprehensive and systematic feeding habit observation and shooting information acquisition equipment, and the collection of feeding habit data is not comprehensive and coherent. Utility Model Content

[0003] Aiming at the shortcomings of current research devices on feeding habits of eel larvae in production and data collection, the utility model designs a test device for studying feeding habits of eel larvae, which can comprehensively and coherently observe and shoot the feeding habits of eel larvae.

[0004] The technical solution of the utility model is: an experimental device for studying the feeding habits of eel larvae, comprising a transparent experimental barrel and a plurality of light-shielding materials with different light transmittances, the top of the experimental barrel is open, and the light-shielding materials can be wrapped around the periphery of the experimental barrel to adjust the light inside the experimental barrel;

[0005] It comprises a food storage container, which is a detachable hollow spherical structure, the hollow interior of which is used to place food, and the spherical structure body is provided with a plurality of small holes for eel larvae to enter and exit to complete feeding, and the food storage container is detachably fixed on the inner side of the experimental barrel;

[0006] It comprises a water pump, which is detachably fixed on the inner side of the experimental barrel, the water inlet of the water pump is wrapped with a mesh cloth for preventing eel larvae from being sucked in with the water flow, the water outlet of the water pump is connected to a water divider, and the water divider is provided with a plurality of water outlet holes, so that the water flowing out of the water divider can flow down along the inner wall of the experimental barrel to form a water curtain;

[0007] It includes a temperature controller and a control display, wherein the temperature controller is arranged in the experimental barrel and connected to the control display through a line, and the set temperature of the temperature controller is adjusted by the control display;

[0008] The device comprises a camera, which is arranged above the experimental barrel and has an adjustable angle. The camera is connected to a control display, and the angle of the camera is controlled by the control display to realize all-round shooting and recording and intuitively present the feeding habit information of the eel larvae captured by the camera.

[0009] Furthermore, the experimental barrel is a transparent glass barrel.

[0010] Furthermore, the food storage container is detachably fixed to the inner side of the experimental barrel via a suction cup.

[0011] Furthermore, the food storage container is a hollow spherical structure formed by buckling two glass hemispherical structures.

[0012] Furthermore, it comprises a bracket and an extension rod, wherein the bracket is a tripod with adjustable height; one end of the extension rod is rotatably fixed to the top of the bracket, and the other end is rotatably fixed to the camera.

[0013] Furthermore, it includes a memory, the camera is connected to the memory, and the image information acquired by the camera is stored in the memory.

[0014] Furthermore, it comprises a workbench, on which a display and a memory are placed.

[0015] The beneficial effects of the utility model are:

[0016] 1. The main body of the test device is a glass barrel, which is easy to obtain and manufacture. In addition, the outer periphery of the transparent glass barrel can be covered with different shading materials according to the test needs to meet the needs of different light during the test;

[0017] 2. The food storage container is a glass transparent spherical structure, which is convenient for intuitive observation and shooting of the feeding behavior of eel larvae inside the sphere;

[0018] 3. Placing food in the glass ball of the food storage container can effectively prevent water pollution caused by the stirring of food by eel fry during feeding;

[0019] 4. The feeding behavior of eel larvae occurs inside the round sphere of the food storage device. Food residues can be easily removed together with the sphere to prevent food residues from spreading into the water body and polluting the water quality. It is also convenient for the collection and quantitative analysis of food residues in the later stage.

[0020] 5. The food storage device is attached to the inner wall of the drum by a suction cup, which makes it easy to move to any position on the inner wall of the drum to create the best shooting position; in addition, the desorption of the suction cup also makes it easy to remove the entire sphere, which facilitates later cleaning and collection of food residues;

[0021] 6. The water outlet of the water pump is designed as a circular structure. The small hole at the lower end of the pipe wall allows water to flow down along the inner wall of the barrel to form a water curtain, which is used to clean the inner wall of the barrel. At the same time, the water flow can also stimulate the movement of eel larvae living at the bottom of the water body, preventing eel larvae from staying at the bottom of the barrel for a long time and causing mouth deformities;

[0022] 7. The temperature controller is an intelligent digital temperature controller for the fish tank, which can set the temperature independently according to the experimental requirements and realize automatic control and adjustment of the temperature;

[0023] 8. The extension rod is set between the camera and the bracket, which can achieve 360-degree rotation and telescopic adjustment, creating a full range of shooting angles for the camera. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 Schematic diagram of the experimental device for studying the feeding habits of eel larvae.

[0025] In the figure: 1 is a test barrel, 2 is a food storage container, 3 is food, 4 is a suction cup, 5 is a water pump, 6 is a temperature controller, 7 is a camera, 8 is a bracket, 9 is an extension rod, 10 is a display, 11 is a storage device, 12 is a line, and 13 is a workbench. DETAILED DESCRIPTION

[0026] The utility model is further described below in conjunction with the accompanying drawings.

[0027] like Figure 1 The main components of the experimental device for studying the feeding habits of eel larvae shown in the figure are composed of an experimental barrel 1, a food storage container 2, food 3, a suction cup 4, a water pump 5, a temperature controller 6, a camera 7, a bracket 8, an extension rod 9, a display 10, a memory 11, a circuit 12, a workbench 13, etc.

[0028] The test barrel 1 is a glass transparent round barrel with a diameter of 50 cm and a height of 60 cm. It is the main area for studying the feeding habits of eel larvae. It is equipped with important components such as a food storage container 2, a water pump 5, and a temperature controller 6. The outer periphery can be covered with different shading materials according to the needs of the experiment to adjust the internal light intensity.

[0029] The food storage container 2 is composed of two glass hemispherical structures with a diameter of 10 cm, which are buckled together. The space between the two hemispheres can be opened to place food. There are small holes on the spheres for eel fry to enter and exit to complete feeding. The size of the small holes can be set according to the thickness of eel fry at different developmental stages.

[0030] The food 3 is a chyme-like feed placed inside the spherical body of the food storage container 2 for the eel larvae to ingest.

[0031] The suction cup 4 is a round cap-shaped suction cup with a diameter of 3 cm. The bottom end is adsorbed on the inner wall of the test barrel 1, and the top end is fixed on the bottom of the food storage container 2. The food storage container 2 can be adsorbed on any position of the inner wall of the barrel according to the test needs.

[0032] The water pump 5 is a small silent circulation filter pump, which is adsorbed on the inner wall of the test barrel 1 through a suction cup on the side. The water inlet is wrapped with a mesh to prevent the eel larvae from being sucked in with the water flow. The water outlet is connected to a water divider, and the water divider is provided with multiple water outlet holes, so that the water flowing out of the water divider can flow down along the inner wall of the test barrel to form a water curtain.

[0033] The temperature controller 6 is an intelligent digital temperature controller, which is used to adjust the temperature of the water in the test barrel 1, so as to realize the autonomous setting and automatic adjustment of the temperature during the test.

[0034] The camera 7 is used to monitor and photograph the feeding behavior and movement habits of the eel larvae in the test barrel 1, and is the main information collection device.

[0035] The bracket 8 is a tripod structure and can be adjusted by telescoping to support camera devices with different height requirements.

[0036] The extension rod 9 is connected between the camera 7 and the bracket 8, and both are rotatably connected, so that the position and angle of the camera can be adjusted in all directions.

[0037] The display 10 is used to intuitively display the feeding behavior of the eel larvae and other information recorded by the camera, and the shooting angle of the camera can be controlled through the screen to achieve all-round shooting and recording.

[0038] The memory 11 is used to store image information such as images and videos acquired by the camera system.

[0039] Line 12 is used to connect the camera 7, display 10, memory 11 and other shooting and storage systems.

[0040] The workbench 13 is used to place devices such as the display 10 and the memory 11, and allows the experimenter to observe, process and analyze the obtained image data through the display.

[0041] Directions:

[0042] 1. Different feed selection test: During the feeding test, different types of food are placed in the food storage container 2 to observe the feeding habits of eel larvae on different foods;

[0043] 2. Different temperature control test: During the feeding test, different temperatures are obtained by adjusting the thermostat 6 to observe the feeding habits of eel larvae under different temperature conditions;

[0044] 3. Different water flow stimulation test: During the feeding test, the water pump 5 is adjusted to achieve changes such as different flow rate stimulation, and the feeding habits of the eel larvae under different flow rate stimulation are observed.

[0045] 4. Comprehensive regulation experiment: During the feeding experiment, the feeding habits of eel larvae under the influence of different habitat factors are observed through the combined regulation of different factors such as food type, temperature changes and water flow strength.

[0046] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention. These improvements and modifications should also be regarded as the protection scope of the present invention.

Claims

1. An experimental device for studying the feeding habits of eel larvae, characterized in that: It comprises a transparent experimental barrel (1) and a plurality of light-shielding materials with different light transmittances, wherein the top of the experimental barrel (1) is open, and the light-shielding materials can be wrapped around the periphery of the experimental barrel (1) to adjust the light inside the experimental barrel (1); The food storage device comprises a food storage container (2), wherein the food storage container (2) is a detachable hollow spherical structure, the hollow interior of which is used to place food (3), a plurality of small holes for eel larvae to enter and exit to complete feeding are arranged on the spherical structure body, and the food storage container (2) is detachably fixed to the inner side of the experimental barrel (1); The experimental barrel (1) comprises a water pump (5), wherein the water pump (5) is detachably fixed to the inner side of the experimental barrel (1), the water inlet of the water pump (5) is wrapped with a mesh cloth for preventing eel larvae from being sucked in with the water flow, and the water outlet of the water pump (5) is connected to a water distributor, and the water distributor is provided with a plurality of water outlet holes, so that the water flowing out of the water distributor can flow down along the inner wall of the experimental barrel (1) to form a water curtain; It comprises a temperature controller (6) and a control display (10), wherein the temperature controller (6) is arranged in the experimental barrel (1) and connected to the control display (10), and the set temperature of the temperature controller is adjusted by the control display (10); The invention comprises a camera (7), wherein the camera (7) is arranged above the experimental barrel (1) and has an adjustable angle, and the camera (7) is connected to a control display (10). The angle of the camera is controlled by the control display (10) to realize all-round shooting and recording and intuitively present the feeding habit information of the eel larvae captured by the camera.

2. The experimental device for studying the feeding habits of eel larvae according to claim 1, characterized in that: The experimental barrel (1) is a glass transparent barrel.

3. The experimental device for studying the feeding habits of eel larvae according to claim 1, characterized in that: The food storage container (2) is detachably fixed to the inner side of the experimental barrel (1) via a suction cup (4).

4. The experimental device for studying the feeding habits of eel larvae according to claim 1, characterized in that: The food storage container (2) is a hollow spherical structure formed by buckling two glass hemispherical structures.

5. The experimental device for studying the feeding habits of eel larvae according to claim 1, characterized in that: It comprises a bracket (8) and an extension rod (9); the bracket (8) is a tripod with adjustable height; one end of the extension rod (9) is rotatably fixed to the top of the bracket (8), and the other end is rotatably fixed to the camera (7).

6. The experimental device for studying the feeding habits of eel larvae according to claim 1, characterized in that: It comprises a memory (11), the camera (7) is connected to the memory (11), and the image information acquired by the camera is stored in the memory.

7. The experimental device for studying the feeding habits of eel larvae according to claim 6, characterized in that: The invention comprises a workbench (13), on which a display (10) and a memory (11) are placed.

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