Crayfish behavior monitoring device and habit research method

Abstract

The invention relates to a crayfish behavior monitoring device and a habit research method, in the same device, a plurality of breeding environments are utilized to screen crayfishes in batches, and the device obtains the living habits and preferences of the crayfishes by changing artificial cave environment variables and observing the behaviors of the crayfishes. The device has the advantages that the whole device is simple in structure, variables can be adjusted according to actual requirements, meanwhile, a plurality of test caves can be formed in one set of device at the same time, enough test samples are provided, and therefore the reliability of test results is guaranteed.

Description

Technical Field

[0001] The invention relates to the technical field of crayfish behavior measurement, in particular to a crayfish behavior monitoring device and a habit research method. Background Art

[0002] During the rapid development of crayfish farming, there are problems such as the lag in basic research on biological characteristics, farming technology and breeding of improved varieties, which restricts the development of the industry.

[0003] Procambarus clarkii is aggressive by nature. It likes to live in burrows or hide during the day and forage for food at night. It especially likes to live in burrows during the breeding process. Creating a habitat suitable for Procambarus clarkii to live in burrows will help improve its survival rate and breeding efficiency.

[0004] In order to improve the efficiency of crayfish breeding and increase the yield and quality of shrimp fry, artificial caves can be set up to provide crayfish with an excellent habitat and breeding environment. However, there is currently no accurate grasp of the crayfish's habits of digging and entering holes, and the technical parameters of the crayfish's artificial holes, such as the orientation, material, and distance of the caves from the water surface, are still unclear. Summary of the invention

[0005] In response to the shortcomings in the above-mentioned existing production technologies, the applicant provides a rationally structured crayfish behavior monitoring device and habit research method, which is suitable for measuring the habits of crayfish digging and entering holes, thereby providing technical parameters for artificial breeding and ecological farming of crayfish, and promoting the high-quality development of the crayfish industry.

[0006] The technical solution adopted by the present invention is as follows:

[0007] A crayfish behavior monitoring device uses multiple breeding environments in the same device to perform batch screening of crayfish.

[0008] The device includes a stocking pool, a plurality of artificial caves leading from the stocking pool, and an observation pool connected to the other end of the artificial caves. The artificial caves are a breeding environment with adjustable variables.

[0009] Variables include the structure of the artificial caves and the filling materials around the artificial caves.

[0010] As a further improvement of the above technical solution:

[0011] A filling space is formed between the delivery pool and the observation pool. The filling space is divided into a number of filling areas. Each filling area is further divided into branch areas for filling various fillers.

[0012] The filling material in the filling area half-covers or fully covers the artificial cave.

[0013] A plurality of arrays of artificial caves are arranged in each filling area, and the artificial caves arranged in each filling area are caves of at least two structures.

[0014] A space is reserved between the top and bottom of the artificial cave and the top surface and mouth of the device.

[0015] The artificial cave adopts a pipe structure, and both ends of the artificial cave are coated with soil.

[0016] The pond is filled with water and aquatic plants are arranged on the water surface for shelter.

[0017] A method for studying the habits of crayfish using a crayfish behavior monitoring device comprises the following steps:

[0018] Pour water into the stocking pond until the water level reaches the artificial cave in the middle layer; place water plants on the water surface so that the height of the water plants reaches the entrance of the artificial cave on the top layer, and ensure that the crayfish can crawl into the artificial cave entrance normally.

[0019] Put the crayfish to be tested into the stocking pond and observe for 3-9 days.

[0020] The behavior of crayfish was recorded by external cameras, and the behavior and spatiotemporal distribution of crayfish were counted.

[0021] As a further improvement of the above technical solution:

[0022] In a single test, the artificial cave uses multi-material spliced ​​tubes or multiple pipes of different materials, and the filling material of the filling area is constant.

[0023] The camera keeps recording from the moment the crayfish are released until the end of the test.

[0024] The beneficial effects of the present invention are as follows:

[0025] The object of the present invention is to provide a crayfish behavior monitoring device with a simple structure, convenient adjustment of sample quantity and convenient adjustment of variables, which is convenient for setting up a variety of test environments, so as to obtain accurate crayfish habit parameters.

[0026] The advantage of the present invention is that it is also possible to select the environment most favored by crayfish from the optional environmental conditions according to the existing environmental conditions, and to build a targeted crayfish breeding environment; since the cost is not high, farms, laboratories, research institutes and other units can be equipped with it.

[0027] The invention fills water or soil in different filling areas to judge whether the crayfish likes to be close to water or soil in the hole; through long-term observation, the observed habits of the crayfish have strong credibility.

[0028] By placing aquatic plants in the release area, crayfish can reach the artificial caves on each layer, and the crayfish's preference for the upper, middle and lower artificial caves can be determined, providing parameters for the setting of the artificial cave locations.

[0029] By changing different artificial cave materials, we can determine the crayfish's preferences for artificial cave materials and lay the foundation for large-scale production of artificial caves.

[0030] By artificially adjusting external conditions such as water temperature and light intensity, we simulate the crayfish's preference for entering holes under different temperatures and light conditions, explore the biological characteristics of crayfish in different seasons, and provide a basis for crayfish farming and reproduction techniques in different seasons.

[0031] By smearing mud on the hole entrance, we can determine the crayfish's preference for the hole entrance when entering the hole, providing a basis for the subsequent setting of the artificial hole entrance.

[0032] When crayfish enter an unsuitable cave, we can observe their exit from the entrance and explore their living habits.

[0033] By releasing crayfish of different sizes and genders, we can observe their habits of entering the holes.

[0034] The real-time monitoring and recording system can reduce the observation intensity of the test personnel, and analysis and judgment can be carried out through video playback after the observation. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 It is a schematic diagram of the structure of the detection device of the present invention.

[0036] Figure 2 The figure is a flow chart of the testing method of the present invention.

[0037] Among them: 1. Release pool; 2. Artificial cave; 3. Inside of filling area; 4. Outside of filling area; 5. Observation pool; 6. Recording system. DETAILED DESCRIPTION

[0038] The specific implementation of the present invention will be described below in conjunction with the accompanying drawings.

[0039] like Figure 1 and Figure 2 As shown, the crayfish behavior monitoring device of this embodiment uses multiple breeding environments in the same device to perform batch screening of crayfish.

[0040] The device includes a stocking pool 1, a plurality of artificial caves 2 leading from the stocking pool 1, and an observation pool 5 connected to the other end of the artificial caves 2. The artificial caves 2 are a breeding environment with adjustable variables.

[0041] The variables include the structure of the artificial cave 2 and the filling material around the artificial cave 2.

[0042] A filling space is formed between the delivery pool 1 and the observation pool 5. The filling space is divided into a plurality of filling areas. Each filling area is further divided into branch areas for filling various filling materials.

[0043] The filling material in the filling area half-covers or fully covers the artificial cave 2 .

[0044] A plurality of arrays of artificial caves 2 are arranged in each filling area, and the artificial caves 2 arranged in each filling area are caves of at least two structures.

[0045] There is a reserved space between the top and bottom of the artificial cave 2 and the top surface and the mouth of the device.

[0046] The artificial cave 2 adopts a pipeline structure, and both ends of the artificial cave 2 are coated with soil.

[0047] The stocking pool 1 is filled with water, and aquatic plants for shielding are arranged on the water surface.

[0048] The method for studying crayfish habits using the crayfish behavior monitoring device of claim 1 of this embodiment comprises the following steps:

[0049] Pour water into the stocking pool 1 until the water level reaches the artificial cave 2 in the middle layer; place water plants on the water surface so that the height of the water plants reaches the entrance of the artificial cave 2 on the top layer, and ensure that the crayfish can crawl into the entrance of the artificial cave 2 normally.

[0050] Place the crayfish to be tested into the stocking pond 1 and observe for 3-9 days.

[0051] The behavior of crayfish was recorded by external cameras, and the behavior and spatiotemporal distribution of crayfish were counted.

[0052] In a single test, the artificial cave 2 uses multi-material spliced ​​pipes or multiple pipes of different materials, and the filling material of the filling area is constant.

[0053] The camera keeps recording from the moment the crayfish are released until the end of the test.

[0054] The specific structure and working principle of the present invention are as follows:

[0055] With the delivery pool 1 as the center, a plurality of artificial caves 2 are opened around the delivery pool 1. In one embodiment of the present invention, the delivery pool 1 is set to be rectangular, and a plurality of artificial caves 2 are opened in a rectangular array on each side wall of the rectangular delivery pool 1, for example, four, nine, or sixteen artificial caves 2 are opened on the same side wall.

[0056] The artificial cave 2 has a certain length, and an observation pool 5 is connected to one end of the artificial cave 2 away from the delivery pool 1. The middle section of the artificial cave 2 is filled with water or soil, and the part between the delivery pool 1 and the observation pool 5 is a filling area, and the artificial cave 2 is embedded in the filling area.

[0057] In the process of crayfish crawling from the stocking pond 1 into the artificial cave 2, the number of crayfish that finally crawl out of the artificial cave 2 will be affected by the different materials and structures of the artificial cave 2. For example, if the crayfish is more adapted to the environment of a certain cave and is unwilling to crawl out, then this type of cave is considered to be in line with the crayfish's preference; if the crayfish exits from the entrance of the artificial cave 2 or crawls out from the exit of the artificial cave 2, then this type of cave is considered not to be in line with the crayfish's preference.

[0058] Therefore, the material, structure and environment of the artificial cave 2 can screen out the preferred habits of crayfish.

[0059] There is a reserved height of 15-20cm between the artificial cave 2 and the bottom of the whole device, that is, the plane where the bottom of the drop pool 1 is located, and the distance between adjacent artificial caves 2 is 10cm. Since the cave itself and the filling area are the main variables of the environment of each artificial cave 2, the optional variables of the artificial cave 2 include: hole diameter, cave depth, cave material, hole environment, and filling area material. The material of the artificial cave 2 can be PVC, bamboo tube or cement prefabricated tube.

[0060] For ease of arrangement, the outer wall of the entire measuring device is circular, and baffles are extended outward from the four top corners of the delivery pool 1. The baffles are connected to the outer wall, and the four groups of artificial caves 2 are separated into filling area 1, filling area 2, filling area 3, and filling area 4. Each filling area is divided into an inner side and an outer side. The inner and outer sides of each filling area are also separated by a partition, and the inner and outer sides can be filled with water or soil as needed. When releasing water, the water level is the same as that of the delivery pool 1, and the horizontal width of the soil is 10-30cm when closed with soil.

[0061] Since the outer wall of the observation pool 5 is an arc and the inner wall is a plane of the filling area, each observation pool 5 is semicircular. The outer walls of the four observation pools 5 form a circle.

[0062] A recording system 6 is also provided on the side of the overall device. The recording system 6 uses a camera to take long-term photos of the crayfish's entry, exit and roosting behaviors, and transmits the collected information to an external computer for statistics. In order to comprehensively capture the dynamics of all crayfish, the recording system 6 uses a support rod limiter, and the camera is installed on the top of the support rod, and is located directly above the entire monitoring device, so that the entire circular detection device can be captured in the picture.

[0063] The above structure is put into practical use, and two specific embodiments are given below as examples:

[0064] Example 1

[0065] The delivery pool 1 is a square pool with a side length of 50cm and a depth of 50cm; the entrance of the artificial cave 2 is connected to the delivery pool 1, and is arranged in 3 layers from top to bottom, with 3 caves on each side and each layer; the diameter of the artificial cave 2 is 8cm, the depth is 80cm, the material is PVC, and the hole is smeared with mud; the lower layer of the artificial cave 2 is 15cm high from the bottom of the device, and the distance between the artificial caves 2 is 10cm. The filling area is divided into the inner side and the outer side. The filling area can be filled with water or soil as needed, and the artificial cave 2 is embedded in the filling area;

[0066] The filling area is divided into filling area 1, filling area 2, filling area 3, and filling area 4.

[0067] Filling area - both the inner and outer sides are filled with soil.

[0068] The inner side of the filling area 2 is filled with soil, and the outer side is filled with water.

[0069] Filling area 3 is filled with water on the inside and soil on the outside.

[0070] The inner side and the outer side of the filling area 4 are filled with water.

[0071] The observation pool 5 is connected to the exit of the artificial cave 2. The artificial cave 2 is sealed with soil in the observation pool 5. The horizontal width of the soil is 20 cm when sealed. The recording system 6 includes a camera, a memory and a support rod. The camera is located above the observation pool 5 and is used to monitor the entry or exit behavior of crayfish in the delivery pool 1 and the observation pool 5.

[0072] The method for measuring the behavior of aquatic animals using the above structure comprises the following steps:

[0073] S1: Fill the stocking pool 1 with water to a predetermined water level, place water plants such as water peanuts, so that the height of the water plants reaches the entrance of the top artificial cave 2 without blocking the entrance of each artificial cave 2, the water temperature is 25±1℃, and natural light source is used for lighting;

[0074] S2: 100 crayfish weighing 40-50 g were placed in stocking pond 1, including 50 male crayfish and 50 female crayfish, and observed for 7 days;

[0075] S3: Statistics of crayfish behavior and spatiotemporal distribution status.

[0076] The observation results showed that after the hole was smeared with mud, the crayfish were more likely to enter the artificial cave 2; the crayfish randomly entered each cave at the beginning, and then some of the crayfish in the caves withdrew to the release pool 1, and gradually remained stable after repeated entry and exit. After 3 days, 70% of the crayfish entered the artificial area filled with mud, and 90% of the crayfish entered the artificial cave 2 in the middle and lower layers. There was no obvious difference in the habit of male and female crayfish entering the cave.

[0077] Example 2

[0078] The delivery pool 1 is a square pool with a side length of 50 cm and a depth of 50 cm; the entrance of the artificial cave 2 is connected to the delivery pool 1, and is arranged in 3 layers from top to bottom, with 3 caves on each side and each layer; the diameter of the artificial cave 2 is 8 cm and the depth is 80 cm. Half of the artificial cave 2 is made of PVC and the other half is made of a through bamboo tube, and the hole is coated with mud; the lower layer of the artificial cave 2 is 15 cm above the bottom of the device, and the distance between the 2 artificial caves is 10 cm.

[0079] The filling areas are all filled with soil, wherein the artificial caves 2 in the filling area 1 and the filling area 2 are filled with PVC material, and the artificial caves 2 in the filling area 3 and the filling area 4 are filled with through bamboo tubes.

[0080] The observation pool 5 is connected to the exit of the artificial cave 2; the artificial cave 2 is sealed with soil in the observation pool 5, and the sealing thickness is 20 cm. The recording system 6 includes a camera, a memory and a support rod. The camera is located above the observation pool 5 and is used to monitor the entry or exit behavior of crayfish in the delivery pool 1 and the observation pool 5.

[0081] The method for measuring the behavior of aquatic animals using the above structure comprises the following steps:

[0082] S1: Fill the stocking pool 1 with water to a predetermined water level, place water plants such as water peanuts, so that the height of the water plants reaches the entrance of the uppermost artificial cave 2 without blocking the entrance of each artificial cave 2, the water temperature is 24±1℃, and natural light source is used for lighting;

[0083] S2: 100 crayfish weighing 40-50 g were placed in stocking pond 1, including 50 male crayfish and 50 female crayfish, and observed for 7 days;

[0084] S3: Statistics of crayfish behavior and spatiotemporal distribution status.

[0085] The observation results showed that 70% of the crayfish entered the bamboo artificial caves 2, and the other 30% of the crayfish entered the PVC artificial caves 2, indicating that the crayfish prefer the bamboo artificial caves 2.

[0086] The technical solutions of the various embodiments of the present invention can be combined, and the technical features in the embodiments can also be combined to form new technical solutions. The structures that are not mentioned in the embodiments but can realize the relevant functions in the embodiments are prior arts.

[0087] The above description is an explanation of the present invention, not a limitation of the present invention. The scope of the present invention is defined in the claims. Any form of modification may be made within the scope of protection of the present invention.

Claims

1. A crayfish behavior monitoring device, characterized in that: In the same device, multiple breeding environments are used to screen crayfish in batches. The device comprises a stocking pool (1), a plurality of artificial caves (2) leading out from the stocking pool (1), and an observation pool (5) connected to the other end of the artificial caves (2). The artificial caves (2) are a breeding environment with settable variables, and the variables include the structure of the artificial caves (2) and the filling materials around the artificial caves (2).

2. The crayfish behavior monitoring device according to claim 1, characterized in that: A filling space is formed between the delivery pool (1) and the observation pool (5), and the filling space is divided into a plurality of filling areas, and each filling area is further divided into branch areas for filling various filling materials.

3. The crayfish behavior monitoring device according to claim 2, characterized in that: The filling material in the filling area half-covers or fully covers the artificial cave (2).

4. The crayfish behavior monitoring device according to claim 3, characterized in that: A plurality of arrays of artificial caves (2) are arranged in each filling area, and the artificial caves (2) arranged in each filling area are caves of at least two structures.

5. The crayfish behavior monitoring device according to claim 4, characterized in that: A space is reserved between the top and bottom of the artificial cave (2) and the top surface and the mouth of the device.

6. The crayfish behavior monitoring device according to claim 1, characterized in that: The artificial cave (2) adopts a pipeline structure, and both ends of the artificial cave (2) are coated with soil.

7. The crayfish behavior monitoring device according to claim 1, characterized in that: The stocking pool (1) is filled with water, and aquatic plants are arranged on the water surface for shielding.

8. A method for studying the habits of crayfish using the crayfish behavior monitoring device of claim 1, characterized in that: The steps include: Water is poured into the stocking pond (1) until the water level reaches the artificial cave (2) in the middle layer; aquatic plants are placed on the water surface so that the height of the aquatic plants reaches the entrance of the artificial cave (2) at the top layer, and ensures that the crayfish can crawl into the entrance of the artificial cave (2) normally. The crayfish to be tested are placed in the stocking pond (1) and observed for 3-9 days. The behavior of crayfish was recorded by external cameras, and the behavior and spatiotemporal distribution of crayfish were counted.

9. The method for studying habits according to claim 8, characterized in that: In a single test, the artificial cave (2) uses a multi-material spliced ​​tube or a plurality of pipes with different materials, and the filling material of the filling area is constant.

10. The method for studying habits according to claim 8, characterized in that: The camera keeps recording from the moment the crayfish are released until the end of the test.

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