A jellyfish full life stage circulating water culture system and culture method thereof

Abstract

The present invention relates to a jellyfish full life stage circulating water culture system and a culture method thereof, wherein the jellyfish full life stage circulating water culture system comprises a detachable culture tank, a bottom tank, a filtering system, a water pump, an upper water pipe and a lower water pipe, etc. The upper water pipe is used to supply water to the culture tank, and the lower water pipe is used to guide the water in the culture tank into the filtering system in the bottom tank, so as to realize the circulation of the culture water between the culture tank and the filtering system. The culture tank provides jellyfish with movement and predation power and achieves an oxygenation effect through pores and / or porous water spray pipes, and uses porous inclined plates to block jellyfish so that they are retained in the culture tank to avoid mechanical damage caused by salvaging jellyfish. The jellyfish full life stage circulating water culture system and a culture method thereof provided by the present invention not only solve the culture problems of each stage of the jellyfish life history, but also can greatly save manpower and time in the jellyfish culture process, improve the culture efficiency, and have good application prospects.

Description

Technical Field

[0001] The invention relates to jellyfish breeding technology, in particular to a jellyfish full life stage circulating water breeding system and a breeding method thereof. Background Art

[0002] Most jellyfish have alternation of generations, i.e., the polyp generation and the medusae generation. The polyp generation reproduces asexually by budding and forming foot cells. Under certain conditions, the polyp can be transformed into a schizosome, which continues to develop and eventually releases a disc-shaped body. The disc-shaped body gradually grows into a medusae body by feeding on plankton, etc. After the disc-shaped body is released, the schizosome can be restored to a polyp.

[0003] Different generations of jellyfish have completely different living habits and biological characteristics: the polyps are tiny (2 to 10 mm) and live a benthic life, and need environmental stimulation to enter the disc stage; the discs are usually smaller than 1 cm, and some jellyfish species have a newly born disc less than 2 mm, and when stimulated by the outside world, the disc curls up to only about 1 mm in diameter; the activity of different discs varies greatly, some newly born discs have weak mobility and will accumulate at the bottom of the water, causing hypoxia or difficulty in prey, and some have a certain phototaxis and gather on one side of the tank, affecting the shape of the disc, all of the above discs require a certain amount of water flow to drive their movement and feeding; the process by which different types of discs develop into jellyfish bodies varies greatly, usually taking 10-30 days; both discs and jellyfish bodies live a planktonic life.

[0004] When breeding polyps, they need to be attached to the wall of the tank or a hanging plastic plate or other attachment bases. Traditional technology generally breeds polyps in still water, feeds small zooplankton, and changes water according to the state of the polyps. Appropriate oxygenation and low-frequency water changes can provide a long-term and stable growth environment for polyps. The feeding frequency of the discoid body is higher than that of the polyps, and a higher frequency of water changes is required to maintain water quality, and a stable water flow is required to provide power for the movement and predation of the discoid body. The traditional breeding method is to salvage the discoid body from the tank in time after the polyps are transversely split, change water and clean it, and then place it in the discoid body breeding tank. Because the discoid body is tiny and the number is large, changing water is time-consuming and labor-intensive, and the water change process will cause different degrees of individual loss when exposed to the air. When the discoid body develops into the jellyfish stage, the movement ability changes, and a more stable water flow is needed to provide the jellyfish with the power to swim, so that the jellyfish can swim slowly in the tank and is not harmed by excessive water flow and maintains a good viewing state. During this stage, jellyfish grow rapidly, have high nutritional requirements, require more feed, and require higher water treatment. During the breeding process, water quality will also affect the jellyfish's food intake. Deterioration of water quality will lead to a decrease in jellyfish food intake or even no food intake. The decomposition of residual bait in the water body will further deteriorate the water quality. In summary, the jellyfish breeding process has high requirements for water quality, and the utilization rate of feed is greatly affected by water quality, so a higher frequency of water changes is required. Traditional breeding technology has the disadvantages of a long water change process, salvage loss of jellyfish umbrella tentacles, and affecting the ornamental value of swimming posture.

[0005] Some jellyfish breeding schemes are disclosed in the prior art, but all of them are designed for the breeding characteristics of a certain life stage of jellyfish. For example, the invention patent application CN107926782A discloses a laboratory hydra breeding device and breeding method, which includes a frame, a storage basket is arranged on the top of the frame, a water tank is arranged in the middle of the frame, a circulation filter is arranged in the water tank, an air pump is arranged in the storage basket, an air pump air pipe is arranged at the air pump outlet, an air outlet head is installed at the end of the air pump air pipe, and the air outlet head is placed in the water tank, and an ozone machine is also arranged in the storage basket, the ozone machine is arranged adjacent to the air pump, and the oxygen outlet of the ozone machine is connected to the outlet of the circulation filter through the ozone machine air pipe. This breeding device and breeding method can only be applied to hydra, and are not suitable for disc-shaped bodies and jellyfish. Invention patent CN105794702B discloses a jellyfish disc-shaped body culture device and its use method, the structure of which includes a culture bottle and an electric bottle roller, the culture bottle includes a cylindrical bottle body with openings at both ends, and a side cover that can be detachably connected to the two ends of the bottle body, and there is a hole in the middle of the side cover, and the bottle body is evenly provided with hemispherical depressions. During the specific experiment, the disc-shaped body can float with the low-speed and effective water flow inside the culture bottle. The cylindrical bottle body has no dead angle and inflation tube, which effectively avoids individual damage. At the same time, the water body does not generate bubbles, which can effectively prevent bubbles from entering the gastric cavity of the disc-shaped body and floating up, reducing the mortality rate. The survival rate of jellyfish disc-shaped bodies is effectively improved, and the accuracy of indoor research experiments is guaranteed. The culture device is not suitable for the cultivation of polyps and jellyfish. Invention patent application CN107455317A discloses an automatic water changing system for jellyfish breeding and its application, including a cylinder with an upper opening and a lower opening, the lower opening covering a screen; an electric pumping device located inside the cylinder, including a pumping port and a drain port, the pumping port being close to the lower opening of the cylinder; an electric rotating device having a rotating shaft; a connecting piece, one end of the connecting piece being connected to the cylinder and the other end being connected to the rotating shaft; the electric rotating device being located above the electric pumping device, driving the cylinder to perform circular motion through the rotating shaft and the connecting piece; and a fixing device for fixing the electric rotating device. The device is not suitable for the cultivation of polyps and disc-shaped bodies.

[0006] Therefore, the above-mentioned prior art is a breeding system designed for a certain stage of the jellyfish life history. Since the different life stages of jellyfish have different life characteristics, the water flow and oxygenation in the polyp and disc stage can be provided by pneumatic and water spray pipes, and the jellyfish body is prone to umbrella perforation and umbrella body deformity after contacting the bubbles generated by the pneumatic, so a bubble-free water flow design should be adopted. In particular, there are still many technical problems in the breeding of the disc stage. For example, the invention patent CN105794702B discloses a jellyfish disc culture device and a method of use thereof, which includes a culture bottle and an electric bottle roller. In the specific experimental process, the disc is cultured in a plurality of cylindrical culture bottles, and the disc is assembled on the electric bottle roller to provide water flow power. The device needs to be disassembled separately and the culture bottle is opened for water change and feeding, which is time-consuming and labor-intensive. For example, the utility model patent CN207574308U discloses a jellyfish disc-shaped body breeding tank, which provides water flow through pneumatics. Although it is convenient to feed, it does not have a water purification system. The disc-shaped body needs to be fished out and water needs to be changed during the breeding process, which will cause different degrees of damage to the disc-shaped body. When feeding bait with a cylinder that provides water flow in a rolling manner, it is not only necessary to disassemble the cylinder body for operation, but there is still the problem of changing water, which damages the disc-shaped body and consumes manpower. For example, the utility model patent CN207531672U discloses a jellyfish disc-shaped body cultivation device. In order to reduce the mechanical damage to the disc-shaped body caused by the water change operation, two layers of gauze are added in the breeding tank to separate the disc-shaped body breeding space and the receiving chamber for changing water. Fresh breeding water is added to the breeding tank, and then the excess sewage is introduced into the sewage receiving bottle through the receiving chamber through the height difference. The gauze is very easy to hang on the residual bait and breed bacteria and algae. When the gauze is disassembled, screws and other objects are very easy to rust in the seawater to destroy the ornamental value of the cylinder, and changing water consumes manpower. Utility model patent CN207531700U discloses a disc-shaped jellyfish aquaculture water circulation system, which adds water storage tanks on the left and right sides of the aquaculture tank. Screen plates are provided on both sides of the disc-shaped aquaculture tank to communicate with the water storage tank, so that water flows through but the disc-shaped body remains in the aquaculture tank to reduce the damage caused by the water flow of the water circulation system to the disc-shaped body. The aquaculture system has a complex structure and low space utilization rate. It only provides water flow through pneumatics and has a single application scenario. Invention patent application CN107455317A discloses an automatic water changing system for jellyfish aquaculture and its application. In order to solve the problem of changing water for jellyfish disc-shaped bodies and larvae, an electric rotating device is used, but the design of the entire device is complex. It is necessary to place the entire electronic rotating device above the aquaculture tank and provide the space required for its movement trajectory. Not only is the space utilization rate low, but the attachment of residual bait and the difficulty in replacing the sieve silk also bring problems to the actual aquaculture operation. Summary of the invention

[0007] The purpose of the present invention is to overcome the existing blank of jellyfish full-stage aquaculture technology and provide a jellyfish full-life stage circulating water aquaculture system, which can realize the artificial cultivation of jellyfish polyps, disc-shaped bodies and jellyfish bodies in all life stages.

[0008] The present invention also provides a method for circulating water culture of jellyfish in all life stages. According to the biological characteristics of different life history stages of jellyfish, namely the polyp stage, the disc stage and the medusa stage, the above system can meet the growth requirements of jellyfish at each stage. At the same time, a filtration system is adopted to utilize circulating water for culture, thereby reducing the frequency of updating the culture water. When updating the culture water, there is no need to remove the polyp, the disc and the jellyfish, and the water is changed by overflow of a porous inclined plate, thereby minimizing the damage to the cultured organisms.

[0009] The specific plan is as follows:

[0010] A jellyfish full life stage circulating water culture system, the jellyfish full life stage circulating water culture system comprising a detachable culture tank, a bottom tank, a filtering system, a water pump, an upper water pipe and a lower water pipe;

[0011] The detachable breeding tank comprises a first flat plate and a second flat plate which are parallel to each other, and an arc plate arranged between the first flat plate and the second flat plate, wherein two arc sides of the arc plate are respectively connected to the first flat plate and the second flat plate to form a breeding space with an arc bottom; the first flat plate and the second flat plate are respectively provided with a card slot on their opposite inner walls, a porous inclined plate is inserted into the card slot so that both sides are fixed, and the bottom of the porous inclined plate abuts against the inner wall of the arc plate; the arc plate is provided with an air hole, a hollow cylinder is passed through the air hole, and the hollow cylinder protrudes toward one end of the outer side of the detachable breeding tank;

[0012] The bottom cylinder comprises a water inlet area, a middle area and a water outlet area which are connected in sequence, the water outlet area is provided with the water pump, the water inlet end of the upper water pipe is connected to the water pump, the water outlet end of the upper water pipe is connected to a water inlet hose, the water inlet hose is connected to a multi-hole water spray pipe, and the multi-hole water spray pipe is fixed between the first flat plate and the second flat plate of the detachable breeding cylinder; the water inlet end of the lower water pipe is connected to the arc plate through a flexible joint, the water outlet end of the lower water pipe is connected to the water inlet area of ​​the bottom cylinder, and the breeding water is input into the bottom cylinder for filtering and impurity removal;

[0013] The filtration system includes a filtration material and a protein separator. The filtration material is placed in the water inlet area of ​​the sump, and the protein separator is placed in the middle area of ​​the sump. The aquaculture water output by the downpipe enters the protein separator after being filtered by the filtration material, and the water after protein is separated is input into the water outlet area of ​​the sump.

[0014] Furthermore, a water flow regulating valve is provided at the water outlet of the water supply pipe, and the amount of water entering the detachable breeding tank is adjusted by the water flow regulating valve; or the water inlet is closed to separate the detachable breeding tank from the jellyfish full life stage circulating water breeding system and use it alone as a quarantine temporary breeding tank or isolation tank.

[0015] Furthermore, a filter is inserted into the lower side of the porous inclined plate through the slot, and the pore size of the filter is smaller than that of the porous inclined plate. The filter cooperates with the porous inclined plate to block jellyfish at different life stages when changing water, thereby facilitating the renewal of the water in the detachable breeding tank.

[0016] Furthermore, the multi-porous water spray pipe includes a hollow tube body, a longitudinal row of water spray holes is opened on the hollow tube body, one end of the hollow tube body is closed by a rubber plug, and the other end of the hollow tube body is fixedly connected to an "L"-shaped guide joint, the rubber plug and the guide joint are respectively tightly attached to the inner walls of the first flat plate and the second flat plate, so that the multi-porous water spray pipe between the rubber plug and the guide joint is fixed in the detachable breeding tank, and the direction of the water spray hole is changed by rotating the multi-porous water spray pipe, and the rubber plug and the guide joint are moved to adjust the direction and position of the water flow sprayed from the multi-porous water spray pipe.

[0017] Furthermore, one end of the hollow cylinder in the air hole is closed, or the protruding end of the hollow cylinder toward the outside of the detachable breeding tank is connected to a rubber tube, and the ventilation device is connected through the rubber tube. Preferably, the air hole is located on the center line of the arc plate, and the height difference between the air hole and the center of the bottom arc of the breeding space is ≤±3cm.

[0018] Furthermore, the tops of the first plate and the second plate relative to each other are provided with notches, and the notches are used to hang carriers for the attachment and growth of polyps;

[0019] Optionally, the filter material comprises filter bags, filter cotton and ceramic rings stacked in sequence;

[0020] Optionally, the detachable breeding tank includes a plurality of small tanks, preferably small tanks of different sizes, and the small tanks are connected in parallel;

[0021] Optionally, the jellyfish full life stage circulating water aquaculture system further comprises a refrigeration system, the refrigeration system comprises a refrigerator, and the refrigerator cools the aquaculture water.

[0022] The present invention also protects a method for culturing jellyfish in full life stages through circulating water. The jellyfish full life stage circulating water culturing system is used to culture jellyfish in full life stages, including the polyp stage, the disc stage and the medusa stage. Circulating water is used during the culturing process, and stable water power is provided through the porous water spray pipe and / or the air holes by using a ventilation device. When the water body is renewed, the jellyfish does not need to be taken out, and the original culturing water in the detachable culturing tank is discharged to the bottom tank through the overflow of the porous inclined plate, and then fresh culturing water is added to the bottom tank and / or the detachable culturing tank, and the jellyfish are always retained in the detachable culturing tank.

[0023] Furthermore, when culturing polyps, the protruding end of the hollow cylinder in the air hole toward the outside of the detachable breeding tank is connected to a rubber tube, and the rubber tube is connected to a ventilation device, and air is blown into the ventilation device; the polyps adhere to the inner wall of the detachable breeding tank, or grow on the porous inclined plate. Preferably, the tops of the first and second flat plates relative to each other are provided with notches, and the notches are used to hang carriers that facilitate the attachment and growth of the polyps, so as to further increase the attachment area.

[0024] Furthermore, when cultivating the disc-shaped body, the protruding end of the hollow cylinder in the air hole toward the outside of the detachable breeding tank is connected to a rubber tube, and the ventilation device is connected through the rubber tube. The ventilation device blows air into the air to provide water power for the disc-shaped body; optionally, the water spray hole of the multi-porous water spray pipe is moved laterally to the opposite side of the multi-porous inclined plate, and the water flow rate of the multi-porous water spray pipe is controlled by adjusting the water flow size in the upper water pipe to achieve low-frequency water exchange.

[0025] Furthermore, when breeding jellyfish, one end of the hollow cylinder in the pore is closed to shut off ventilation; the porous water spray pipe is close to the porous inclined plate, and the direction of the water spray hole is adjusted so that the water flow is sprayed out parallel to the porous inclined plate. The sprayed water flow encounters the curved plate to form an arc-shaped water flow, thereby providing the jellyfish with movement and predation power.

[0026] Beneficial effects:

[0027] The jellyfish full life stage circulating water culture system provided by the present invention adopts a filtering system to purify water, and cooperates with a water circulation system to realize circulating water culture of jellyfish, which greatly maintains the water quality required for culture and greatly reduces the water change frequency of the entire culture system, thereby being environmentally friendly and water-saving.

[0028] Furthermore, the multifunctional detachable jellyfish full life stage circulating water culture system of the present invention is convenient for feeding, and there is no need to open the cover or disassemble the culture device. The air holes are connected to the ventilation device, and / or the porous water spray pipe equipped with a water pump can provide stable water power and oxygenation for the jellyfish; preferably, a water flow control valve is installed on the water pipe to flexibly adjust the water flow of the water inlet, which can be adapted to the culture of polyps, disc-shaped bodies and jellyfish bodies.

[0029] Furthermore, in the jellyfish full life stage circulating water culture system of the present invention, a porous inclined plate is arranged in the culture tank, and the insertion, fixing and extraction of the porous inclined plate can be facilitated by using a card slot; preferably, the porous inclined plate can be optionally matched with a filter screen to flexibly adjust the filter size to achieve a barrier effect on jellyfish at different stages, so that the jellyfish can be retained in the tank body when changing water, reducing the mechanical damage caused by the movement of water during the growth of jellyfish. Notches can be arranged on the upper edges of the first plate and the second plate to facilitate the hanging of the carrier for the attachment and growth of the polyp.

[0030] Finally, in the jellyfish full life stage circulating water culture system described in the present invention, the detachable culture tank can be used alone or in combination, and is easy to disassemble. When used alone, the culture tank is separated from the entire system, and can be optionally connected to a ventilation device through an air hole to perform the function of a quarantine temporary culture tank or an isolation tank. When used in combination, cylinders of various specifications can be used in any combination, and preferably cylinders of different sizes are connected in parallel to facilitate the cultivation of jellyfish of different sizes; by adopting the parallel connection method, each cylinder can independently use pneumatic or porous water spray pipes to provide water power for jellyfish activities.

[0031] In summary, the jellyfish full life stage circulating water culture system and culture method provided by the present invention not only solve the culture problems of each stage of the jellyfish life history and increase the survival rate of each culture stage, but also can greatly save manpower and time in the jellyfish culture process, and also increase the space utilization rate. The cylinder design retains the maximum degree of ornamental value while having excellent functions. It is not only suitable for laboratory culture observation, but also suitable for commercial production, and has a good application prospect. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] In order to more clearly illustrate the technical solution of the present invention, the accompanying drawings will be briefly introduced below. Obviously, the accompanying drawings in the following description only relate to some embodiments of the present invention, but are not intended to limit the present invention.

[0033] Figure 1 This is a schematic diagram of the structure of a circulating aquaculture system for all life stages of jellyfish provided in Example 1 of the present invention;

[0034] Figure 2 This is a schematic diagram of the three-dimensional structure of a breeding tank provided by Embodiment 1 of the present invention;

[0035] Figure 3 This is a schematic diagram of the connection structure between the breeding tank and the water supply pipe provided in one embodiment 1 of the present invention;

[0036] Figure 4 It is a schematic diagram of the connection structure between the breeding tank and the sewer pipe provided in one embodiment 1 of the present invention. DETAILED DESCRIPTION

[0037] The preferred embodiments of the present invention will be described in more detail below. Although the preferred embodiments of the present invention are described below, it should be understood that the present invention can be implemented in various forms and should not be limited by the embodiments set forth herein. In the embodiment, if no specific technology or conditions are indicated, the technology or conditions described in the document in this area or the product specification are carried out. If the manufacturer is not indicated for reagents used or instruments, they are all conventional products that can be obtained commercially.

[0038] Example 1

[0039] refer to Figure 1 A jellyfish full life stage circulating water culture system includes a culture tank 1, an upper water pipe 2, a lower water pipe 3, a filter material 4, a protein separator 5, a water pump 6 and a bottom tank 7, wherein the upper water pipe 2 is used to supply water to the culture tank 1, and the water in the bottom tank is input into the culture tank 1 under the action of the water pump 6, and the lower water pipe 3 is used to lead the water in the culture tank 1 into the bottom tank 7.

[0040] The bottom tank 7 includes an inlet area, a middle area and a water outlet area which are connected in sequence. The three areas are separated by a glass partition and connected by pipelines. The filter material 4, the protein separator 5 and the water pump 6 are all arranged in the bottom tank 7, wherein the filter material 4 is arranged in the inlet area, the protein separator 5 is arranged in the middle area, and the water pump 6 is arranged in the water outlet area. When in use, the lower water pipe 3 guides the aquaculture water into the inlet area of ​​the bottom tank 7, immerses the filter material 4 in the inlet area, and the water after impurities are removed by the filter material 4 is input into the middle area, immerses the protein separator 5 in the middle area, and the water after impurities are removed by the protein separator 5 is input into the water outlet area, and is input into the upper water pipe 2 under the action of the water pump 6 at the bottom of the water outlet area, so as to realize the circulation of the aquaculture water between the aquaculture tank 1 and the bottom tank 7.

[0041] Preferably, a refrigerator can also be connected to the water circulation system. An optional connection method is to connect the refrigerator to a water pipe, and the water is sent to the breeding tank after being cooled.

[0042] The specific structure of the breeding tank can be seen in Figure 2 , including a first flat plate 11 and a second flat plate 12 which are parallel to each other, and an arc-shaped plate 13 arranged between the first flat plate and the second flat plate, wherein two arc sides of the arc-shaped plate 13 are respectively connected to the first flat plate 11 and the second flat plate 12 to form a breeding space with an arc-shaped bottom.

[0043] Preferably, the first flat plate 11, the second flat plate 12 and the arc-shaped plate 13 are glass plates or transparent plastic plates. The first flat plate 11 and the second flat plate 12 are provided with a first card slot 14 and a second card slot 15 on the inner walls opposite to each other, and a porous inclined plate 16 is inserted into the first card slot 14 and the second card slot 15 so that both sides are fixed, and the bottom of the porous inclined plate 16 abuts against the inner wall of the arc-shaped plate 13.

[0044] The upper part of the arc plate 13 is connected to the downpipe 3 through a flexible joint 17 on one side near the porous inclined plate 16, and the water is discharged through the downpipe 3. The lower part of the arc plate 13 is provided with air holes 31 (see Figure 3 ), a hollow cylinder 32 is passed through the air hole 31, and one end of the hollow cylinder 32 protrudes toward the outside of the detachable breeding tank, and the rubber tube 18 is passed through the protruding end to connect the ventilation device 19.

[0045] In order to facilitate the water flow in the water pipe 2 to enter the breeding tank 1, and at the same time ensure that the water inflow disturbs the water flow in the tank to provide water power for the jellyfish, a water inlet hose 7 is used in combination with a multi-hole water spray pipe 8. Figure 3 A water flow regulating valve 20 is provided on the water pipe 2, and the water pipe 2 is connected to a water inlet hose 7, which is preferably a silicone tube, and the water inlet hose 7 is connected to a porous water spray pipe 8, so that the water in the water pipe 2 is introduced into the breeding tank.

[0046] The multi-porous water spray pipe 8 includes a hollow tube body, on which a row of straight water spray holes are longitudinally opened. One end of the hollow tube body is closed by a rubber plug 81, and the other end of the hollow tube body is fixedly connected to an "L"-shaped guide joint 82. The rubber plug 81 and the guide joint 82 are respectively close to the inner walls of the first flat plate 11 and the second flat plate 12, so that the multi-porous water spray pipe 8 between the rubber plug 81 and the guide joint 82 is fixed in the breeding tank 1. The position of the multi-porous water spray pipe 8 is adjusted by moving the rubber plug 81 and the guide joint 82. The angle direction of the sprayed water flow can be adjusted by rotating the multi-porous water spray pipe 8.

[0047] Specifically, the porous water spray pipe 8 is moved to the opposite side of the porous inclined plate 16. At this time, the ventilation device can be connected through the air hole 31 to blow air, thereby providing water power for the disc-shaped body. The porous water spray pipe 8 plays a role of water intake, providing a relatively stable living environment for the disc-shaped body to continuously renew the breeding water; the porous water spray pipe 8 can also be moved close to one side of the porous inclined plate 16, and the porous water spray pipe 8 is rotated so that the water spraying direction is parallel to the inclined plate. The water flow sprayed downward by the porous water spray pipe 8 encounters the curved plate 13 to form an arc-shaped water flow, which provides movement and predation power for the jellyfish. At this time, the air hole 31 is closed to prevent bubbles from damaging the jellyfish body.

[0048] The end of the curved plate 13 of the breeding tank close to the porous inclined plate 16 is connected to the downpipe 3 through a flexible joint 17, preferably a PVC flexible joint, as shown in FIG. Figure 4 One end of the flexible joint 17 is flatly connected to the through hole 30 on the arc plate 13, and the other end of the flexible joint 17 is provided with an internal thread for matching with the external thread on the down pipe 3 to achieve threaded connection.

[0049] An air hole 31 is further provided at the lower part of the arc plate 13 , and a hollow cylinder 32 is passed through the air hole 31 . The protruding end of the hollow cylinder 32 toward the outside of the breeding tank is connected to the rubber tube 18 , and the ventilation device 19 is connected through the rubber tube 18 .

[0050] Example 2

[0051] This embodiment is improved on the basis of embodiment 1. A filter net is laid on the upper surface of the porous inclined plate, preferably a PVC net. The pore size of the filter net is 1-0.5mm, and the pore size of the porous inclined plate is 2-5mm. The filter net cooperates with the porous inclined plate to achieve isolation of jellyfish in different life stages when changing water.

[0052] In order to facilitate the cultivation of the disc-shaped body, the bubbles input through the air holes along the cylinder wall enter the air along the porous inclined plate, providing the disc-shaped body with curved water power. At this time, it is preferred to place the porous water spray pipe on the opposite side of the porous inclined plate, adjust the water flow control valve to control the water output of the porous water spray pipe, and perform low-frequency water changes.

[0053] When necessary, the aquaculture water is updated, for example, 10% of the aquaculture water in the water inlet pool is replaced once a week, and the overflow formed by the overlapping of the porous inclined plate and the filter screen allows the water to slowly overflow, but the disc-shaped body is still retained in the tank. According to the needs of different types of disc-shaped bodies, the position of the porous spray pipe or the angle of the spray hole can be moved to control the direction of the water flow, and the water flow size or the amount of water replacement can be adjusted through the water flow regulating valve.

[0054] Example 3

[0055] This embodiment is improved on the basis of embodiment 1. The cylinder body includes three small cylinders. The cylinder body structure of the small cylinders is the same as that of embodiment 1. The small cylinders are independent of each other. The water inlet parts of the small cylinders are connected to the upper water pipe in parallel through three water inlet hoses. The arc plates of the small cylinders are each flexibly connected to the lower water pipe to drain the water.

[0056] The sizes of the small tanks can be the same or different. For example, the tank for jellyfish can be larger, while the tanks for polyps and disc-shaped bodies can be slightly smaller.

[0057] Example 4

[0058] A method for circulating water culture of jellyfish in all life stages is described, and the system in Example 3 is used for culture. Jellyfish in all life stages include the polyp stage, the disc stage and the medusa stage. The polyp, the disc and the medusa can all be cultured using the system in this embodiment. The water circulation system provides good water quality for the jellyfish for a long time. The pores and the multi-hole water spray pipes can provide adjustable water power according to different culture requirements and achieve the purpose of oxygenation.

[0059] The small tank can be disassembled or assembled for extended use. The disassembly of the small tank greatly improves the flexibility of breeding. The combination of small tanks improves space utilization. The equipment is multifunctional and flexible. It is not only suitable for laboratory experimental observation, but also for commercial production of jellyfish breeding. The breeding tank is made of transparent material, such as the first flat plate, the second flat plate and the curved plate are acrylic plates or glass plates, which are easy to observe.

[0060] During the breeding process, circulating water is used, and jellyfish of different life stages are respectively raised in different tanks. When the water body is renewed, the jellyfish are not taken out, and the breeding water is discharged through the overflow of the porous inclined plate. The water power supply method for jellyfish of different life stages may be different.

[0061] Specifically, the small cylinder for breeding polyps is introduced with air through the pores on the arc-shaped plate, and the polyps can grow in the cylinder. The water circulation system and the filtration system may not be connected, that is, the breeding cylinder can be removed from the system for breeding separately. Preferably, the tops of the first flat plate and the second flat plate relative to each other are provided with a notch, and the notch is used to hang a carrier for the attachment and growth of the polyps, so as to further increase the attachment area. For example, a plastic corrugated plate or a ceramic ring can be hung at the notch, and the polyps can be attached to the plastic corrugated plate or the ceramic ring to grow in the breeding water. When the water body needs to be renewed, the breeding cylinder can be connected to the water circulation system and the filtration system, and the water regulating valve can be controlled to allow a low-speed water flow to be introduced for water replacement.

[0062] A small tank for breeding dish-shaped bodies, air is let into the air holes on the side wall, and bubbles input along the side wall of the tank body enter the air along the porous inclined plate, stirring the breeding water to provide curved water power for the dish-shaped body; specifically, a rubber tube is connected to the protruding end of the hollow cylinder in the air hole toward the outside of the detachable breeding tank, and the rubber tube is connected to a ventilation device, and the ventilation device blows air into it, thereby providing water power for the dish-shaped body.

[0063] At this time, the multi-porous water spray pipe can be preferably placed on the opposite side of the multi-porous inclined plate, and the water flow regulating valve can be adjusted to control the water output of the multi-porous water spray pipe, so as to perform low-frequency water changes. According to the needs of different types of disc-shaped bodies, the position of the multi-porous water spray pipe can be moved or the multi-porous water spray pipe can be rotated to change the angle of the water spray hole, so as to control the direction of the water flow, and the water flow regulating valve can be adjusted to control the water output of the multi-porous water spray pipe, so as to adjust the water change amount.

[0064] A small tank for breeding jellyfish, one end of the hollow cylinder in the air hole on the breeding tank is closed to close the ventilation; the multi-porous water spray pipe is close to the multi-porous inclined plate, and the direction of the water spray hole is adjusted so that the water flow is sprayed parallel to the inclined plate to provide filtered breeding water; the multi-porous water spray pipe is located on the opposite side of the multi-porous inclined plate, and only the water flow sprayed downward by the multi-porous water spray pipe encounters the curved plate to form a curved water flow, which provides movement and predation power for the jellyfish.

[0065] The preferred embodiments of the present invention are described in detail above. However, the present invention is not limited to the specific details in the above embodiments. Within the technical concept of the present invention, a variety of simple modifications can be made to the technical solution of the present invention, and these simple modifications all belong to the protection scope of the present invention.

[0066] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, the present invention will not further describe various possible combinations.

[0067] In addition, various embodiments of the present invention may be arbitrarily combined, and as long as they do not violate the concept of the present invention, they should also be regarded as the contents disclosed by the present invention.

Claims

1. A circulating water culture system for all life stages of jellyfish, characterized by: The jellyfish full life stage circulating water culture system comprises a detachable culture tank, a bottom tank, a filtering system, a water pump, an upper water pipe and a lower water pipe; The detachable breeding tank comprises a first flat plate and a second flat plate which are parallel to each other, and an arc plate arranged between the first flat plate and the second flat plate, wherein two arc sides of the arc plate are respectively connected to the first flat plate and the second flat plate to form a breeding space with an arc-shaped bottom; the first flat plate and the second flat plate are respectively provided with a card slot on their opposite inner walls, a porous inclined plate is inserted into the card slot so that both sides are fixed, and the bottom of the porous inclined plate abuts against the inner wall of the arc plate; the arc plate is provided with an air hole, a hollow cylinder is passed through the air hole, and the hollow cylinder protrudes toward one end of the outer side of the detachable breeding tank; one end of the hollow cylinder in the air hole is closed, or a rubber tube is connected to the protruding end of the hollow cylinder toward the outer side of the detachable breeding tank, and a ventilation device is connected through the rubber tube; when breeding jellyfish, one end of the hollow cylinder in the air hole is closed to close the ventilation; when breeding polyps, air is blown into the ventilation device, and the polyps adhere to the inner wall of the detachable breeding tank, or grow on the porous inclined plate; The bottom tank comprises a water inlet area, a middle area and a water outlet area which are connected in sequence, the water outlet area is provided with the water pump, the water inlet end of the upper water pipe is connected to the water pump, the water outlet end of the upper water pipe is connected to a water inlet hose, the water inlet hose is connected to a multi-hole water spray pipe, the multi-hole water spray pipe is fixed between the first flat plate and the second flat plate of the detachable breeding tank; the multi-hole water spray pipe comprises a hollow tube body, a row of water spray holes are longitudinally arranged on the hollow tube body, one end of the hollow tube body is closed by a rubber plug, the other end of the hollow tube body is fixedly connected to an "L"-shaped guide joint, the rubber plug and the guide joint are respectively pressed against the inner walls of the first flat plate and the second flat plate, so that the multi-hole water spray pipe between the rubber plug and the guide joint is fixed in the detachable breeding tank, the direction of the water spray hole is changed by rotating the multi-hole water spray pipe, and the rubber plug and the guide joint are moved to adjust the direction and position of the water flow sprayed from the multi-hole water spray pipe; The water inlet end of the downpipe is connected to the arc plate through a flexible joint, and the water outlet end of the downpipe is connected to the water inlet area of ​​the bottom tank, so that the aquaculture water is input into the bottom tank for filtering and removing impurities; The filtration system includes a filtration material and a protein separator. The filtration material is placed in the water inlet area of ​​the sump, and the protein separator is placed in the middle area of ​​the sump. The aquaculture water output by the downpipe enters the protein separator after being filtered by the filtration material, and the water after protein is separated is input into the water outlet area of ​​the sump.

2. The jellyfish full life stage circulating aquaculture system according to claim 1, characterized in that: The water outlet end of the water supply pipe is provided with a water flow regulating valve, through which the amount of water entering the detachable breeding tank is adjusted; or the water inlet is closed to separate the detachable breeding tank from the jellyfish full life stage circulating water breeding system and use it alone as a quarantine temporary breeding tank or isolation tank.

3. The jellyfish full life stage circulating water culture system according to claim 1, characterized in that: The filter net is inserted into the lower side of the porous inclined plate through the slot, and the aperture of the filter net is smaller than that of the porous inclined plate. The filter net cooperates with the porous inclined plate to block jellyfish at different life stages when changing water, which is convenient for updating the water in the detachable breeding tank.

4. The jellyfish full life stage circulating water culture system according to claim 1, characterized in that: The air hole is located on the center line of the arc plate, and the absolute value of the height difference between the air hole and the center of the bottom arc of the breeding space is ≤3 cm.

5. The jellyfish full life stage circulating aquaculture system according to any one of claims 1 to 4, characterized in that: The tops of the first flat plate and the second flat plate relative to each other are provided with notches, and the notches are used to hang carriers for the attachment and growth of polyps.

6. The jellyfish full life stage circulating water culture system according to claim 5, characterized in that: The filter material comprises filter bags, filter cotton and ceramic rings which are stacked in sequence.

7. The jellyfish full life stage circulating water culture system according to claim 5, characterized in that: The detachable breeding tank comprises a plurality of small tanks.

8. The jellyfish full life stage circulating water culture system according to claim 5, characterized in that: The jellyfish full life stage circulating water culture system also includes a refrigeration system, and the refrigeration system includes a refrigerator, and the refrigerator cools the culture water.

9. The jellyfish full life stage circulating aquaculture system according to claim 7, characterized in that: The small cylinders are small cylinders of different sizes, and the small cylinders are connected in parallel.

10. A method for circulating aquaculture of jellyfish in all life stages, characterized by: A jellyfish full life stage circulating water aquaculture system as described in any one of claims 1 to 9 is used to culture jellyfish in all life stages, including the polyp stage, the disc stage and the medusae stage. Circulating water is used during the aquaculture process to provide stable water dynamics through the porous water spray pipe and / or the air holes using a ventilation device. When the water body is renewed, the jellyfish does not need to be removed, and the original aquaculture water in the detachable aquaculture tank is discharged to the bottom tank through the overflow of the porous inclined plate, and then fresh aquaculture water is added to the bottom tank and / or the detachable aquaculture tank, and the jellyfish are always retained in the detachable aquaculture tank.

11. The method for circulating aquaculture of jellyfish in all life stages according to claim 10, characterized in that: When culturing polyps, the protruding end of the hollow cylinder in the air hole toward the outside of the detachable breeding tank is connected to a rubber tube, and the rubber tube is connected to a ventilation device, and air is blown into the ventilation device; the polyps adhere to the inner wall of the detachable breeding tank, or grow on the porous inclined plate.

12. The method for circulating aquaculture of jellyfish in all life stages according to claim 11, characterized in that: The tops of the first flat plate and the second flat plate relative to each other are provided with notches, and the notches are used to hang carriers for the attachment and growth of polyps, so as to further increase the attachment area.

13. The method for circulating aquaculture of jellyfish in all life stages according to claim 10, characterized in that: When the disc-shaped body is cultivated, the protruding end of the hollow cylinder in the air hole toward the outside of the detachable cultivation tank is connected to a rubber tube, and the rubber tube is connected to a ventilation device, and air is blown into the ventilation device to provide water power for the disc-shaped body.

14. The method for circulating aquaculture of jellyfish in all life stages according to claim 13, characterized in that: The water spray hole of the multi-hole water spray pipe is moved to the opposite side of the multi-hole inclined plate, and the water flow rate of the multi-hole water spray pipe is controlled by adjusting the water flow in the upper water pipe to achieve low-frequency water exchange.

15. The method for circulating aquaculture of jellyfish in all life stages according to claim 10, characterized in that: When breeding jellyfish, one end of the hollow cylinder in the pore is closed to close the ventilation; the multi-hole water spray pipe is close to the multi-hole inclined plate, and the direction of the water spray hole is adjusted so that the water flow is sprayed out parallel to the multi-hole inclined plate. The sprayed water flow encounters the arc plate to form an arc-shaped water flow, thereby providing the jellyfish with movement and predation power.

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