Host fish temporary rearing and juvenile shellfish collection device

Abstract

The utility model provides a kind of foster seedling, host fish temporary culture and juvenile shellfish collection device, it is related to the technical field of freshwater shellfish breeding equipment, including: breeding main body, mother mussel breeding component, host fish temporary culture component and off-sprout juvenile shellfish collection component;Mother mussel breeding component and host fish temporary culture component are all set in breeding main body, mother mussel breeding component is communicated with host fish temporary culture component, mother mussel breeding component is used to breed mother mussel, and hook intermediates larvae in the gill cavity of mother mussel can enter host fish temporary culture component;Off-sprout juvenile shellfish collection component is set below breeding main body, and is communicated with the outlet of breeding main body, and off-sprout juvenile shellfish collection component is used to collect juvenile shellfish that falls off from host fish, alleviate the technical problem that traditional foster seedling off-sprout process exists in prior art, equipment occupies large area, unit area yield is low and foster seedling off-sprout work efficiency is low.

Description

Technical Field

[0001] This utility model relates to the technical field of freshwater shellfish aquaculture equipment, and in particular to a device for temporarily holding host fish and collecting juvenile shellfish. Background Technology

[0002] Freshwater benthic mollusks, as important aquatic economic species, have attracted much attention in the aquaculture industry due to their unique reproductive biology. These mollusks possess a unique dual-host life cycle: such as... Figure 2 As shown, the fertilized egg first completes embryonic development within the gill cavity of the mother clam, forming a glochidia larva with parasitic characteristics. The larva then parasitizes the fish and further develops into a juvenile clam or juvenile mussel; this process is called "metamorphosis." Subsequent cultivation then produces juvenile mussels, medullary mussels, etc. The detached juvenile clam is generally around 200 micrometers in size, invisible to the naked eye. In traditional aquaculture practices, a pig-farming process based on temporary rearing of host fish is commonly used. The specific operation involves: temporarily rearing yellow catfish (called host fish) that have completed larval parasitism; before the glochidia larvae mature and detach, they are transferred to a nursery pond for temporary rearing, allowing the juvenile mussels to detach directly to the bottom of the pond, followed by flowing water cultivation.

[0003] However, this traditional method has several inherent drawbacks: it requires a large area of ​​water for the temporary rearing of host fish and the cultivation of juvenile mussels, which takes up a lot of space, has low yield per unit area, and is prone to seeding and seedling loss, resulting in low work efficiency and seriously affecting subsequent juvenile mussel cultivation and production. Utility Model Content

[0004] The purpose of this invention is to provide a device for parasitizing, temporarily holding host fish, and collecting juvenile shellfish, so as to alleviate the technical problems of large equipment area, low yield per unit area, and low efficiency of parasitizing and removing juvenile shellfish in the traditional parasitizing and removing process.

[0005] The device for temporarily holding host fish and collecting juvenile shellfish provided by this utility model includes: a culture main body, a mother mussel culture component, a host fish temporary holding component, and a juvenile shellfish collection component;

[0006] Both the female mussel culture component and the host fish temporary holding component are located within the culture body. The female mussel culture component is connected to the host fish temporary holding component. The female mussel culture component is used to culture female mussels, and the glochidia larvae in the gill cavity of the female mussel can enter the host fish temporary holding component.

[0007] The juvenile clam collection component is located below the aquaculture body and is connected to the outlet of the aquaculture body. The juvenile clam collection component is used to collect juvenile clam that have detached from the host fish.

[0008] Furthermore, the aquaculture body is configured as a barrel-shaped structure, the host fish temporary holding component is located in the middle of the aquaculture body, and the mother mussel aquaculture component is connected to the top of the host fish temporary holding component.

[0009] Furthermore, the diameter of the bottom of the aquaculture body gradually decreases from the direction away from the host fish temporary holding component;

[0010] The bottom outlet of the aquaculture unit is connected to the juvenile clam collection component.

[0011] Furthermore, the juvenile clam collection component includes a transport pipe and a juvenile clam collection piece;

[0012] The inlet of the transport pipeline is connected to the bottom outlet of the aquaculture unit;

[0013] The outlet of the transport pipe is connected to the juvenile clam collection device, or the outlet of the transport pipe is used to connect to the juvenile clam cultivation system.

[0014] Furthermore, the transport pipeline is configured as a silk screen pipe.

[0015] Furthermore, the juvenile clam collection component also includes a conical funnel;

[0016] The inlet of the conical funnel is connected to the outlet of the transport pipeline;

[0017] The outlet of the conical funnel is connected to the juvenile clam collector.

[0018] Furthermore, the juvenile clam collection component also includes a water storage tank;

[0019] The transport pipe and the conical funnel are installed inside the water storage tank, and the conical funnel passes through the bottom of the water storage tank and communicates with the juvenile clam collection device.

[0020] Furthermore, the upper part of the water storage tank is provided with an overflow outlet.

[0021] Furthermore, a first control valve is provided between the transport pipeline and the aquaculture entity.

[0022] Furthermore, the aquaculture unit is equipped with a heating rod and an oxygen head. The heating rod is used to heat the liquid inside the aquaculture unit, and the oxygen head is used to oxygenate the liquid inside the aquaculture unit.

[0023] In an optional implementation,

[0024] The device for parasitizing, temporarily raising host fish, and collecting juvenile clams provided by this utility model temporarily raises fertile female clams in a female clam culture component. After the glochidia larvae in the gill cavity of the female clam mature naturally, they enter the host fish temporarily raising component and parasitize the host fish in the component. They develop on the gills of the host fish until they mature and detach, and finally enter the juvenile clams collection component. This utility model integrates the above-mentioned parasitizing, temporarily raising host fish, and collecting juvenile clams into one device. On the one hand, it achieves a highly compact design, greatly reducing the floor space and increasing the output per unit area. On the other hand, it greatly saves labor costs and improves the efficiency of parasitizing and juvenile clams collection. It achieves convenience and high efficiency, and alleviates the technical problems of large equipment area, low output per unit area, and low efficiency in the traditional parasitizing and juvenile clams collection process. Attached Figure Description

[0025] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0026] Figure 1 A schematic diagram of the structure of the device for temporarily holding host fish and collecting juvenile shellfish provided in an embodiment of this utility model;

[0027] Figure 2 This is a schematic diagram of the aquaculture process for freshwater benthic shellfish.

[0028] Icons: 100 - Main aquaculture unit; 110 - Water inlet; 200 - Female mussel aquaculture component; 300 - Host fish temporary holding component; 400 - Collection component for juvenile mussels; 410 - Transport pipe; 420 - Conical funnel; 430 - Water storage tank; 431 - Overflow outlet; 500 - First control valve; 600 - Heating rod; 700 - Oxygen head; 800 - Second control valve. Detailed Implementation

[0029] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0030] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0031] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0032] The specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustration and explanation only and are not intended to limit the scope of this utility model.

[0033] like Figure 1 As shown, this embodiment provides a device for raising larvae, temporarily holding host fish, and collecting juvenile clams, including: a culture body 100, a female clam culture component 200, a host fish temporary holding component 300, and a juvenile clams collection component 400; the female clam culture component 200 and the host fish temporary holding component 300 are both disposed within the culture body 100, the female clam culture component 200 is connected to the host fish temporary holding component 300, the female clam culture component 200 is used to raise female clams, and the glochidia larvae in the gill cavity of the female clam can enter the host fish temporary holding component 300; the juvenile clams collection component 400 is disposed below the culture body 100 and is connected to the outlet of the culture body 100, the juvenile clams collection component 400 is used to collect juvenile clams that have detached from the host fish.

[0034] The device for parasitizing, temporarily holding host fish, and collecting juvenile clams provided in this embodiment temporarily holds fertile female clams in the female clam culture component 200. After the glochidia larvae in the female clam's gill cavity naturally mature, they enter the host fish culture component 300 and parasitize the host fish there. They develop on the gills of the host fish until they mature and detach, finally entering the juvenile clams collection component 400. Specifically, in this embodiment, after the glochidia larvae in the female clam's gill cavity naturally mature, they are released into the water to parasitize the fish. The development of the glochidia larvae into juvenile clams and their detachment from the fish are all completed in one device. This utility model integrates the above-mentioned parasitizing, temporarily holding host fish, and collecting juvenile clams into one device. On the one hand, it achieves a highly compact design, greatly reducing the floor space and increasing the output per unit area. On the other hand, it greatly saves labor costs and improves the efficiency of parasitizing and collecting juvenile clams. It achieves convenience and efficiency, alleviating the technical problems of large equipment area, low output per unit area, and low efficiency in the traditional parasitizing and collecting process.

[0035] Regarding the shape and structure of the aquaculture entity 100, in detail:

[0036] The aquaculture body 100 is set as a round, square, or hexagonal barrel-shaped structure. The diameter of the bottom of the aquaculture body 100 gradually narrows from the direction away from the host fish temporary holding component 300. The bottom of the aquaculture body 100 is conical or sloping. The water outlet is designed at the bottom. The bottom outlet of the aquaculture body 100 is connected to the juvenile shellfish collection component 400.

[0037] Specifically, the conical or sloping bottom design can guide the juvenile oysters and water flow towards the outlet, which helps the juvenile oysters to be discharged quickly and reduces residue.

[0038] In an optional embodiment, the top of the culture body 100 is provided with a water inlet 110 for supplying water and nutrient solution necessary for the cultured mother mussels and host fish into the culture body 100.

[0039] In an optional embodiment, both the female mussel culture component 200 and the host fish temporary holding component 300 are disposed within the culture body 100, with the host fish temporary holding component 300 disposed in the middle of the culture body 100, and the female mussel culture component 200 connected above the host fish temporary holding component 300.

[0040] Specifically, the female mussel culture component 200 can be a round or square plastic basket with a 3×3cm aperture. It is used to hold fertile female mussels, or to temporarily house superior freshwater mussel parent stock, allowing the female mussels to fertilize naturally. After the glochidia larvae mature, they are automatically released into the host fish culture component 300 and automatically parasitize the yellow catfish. After the parasitism is complete, the parent mussels can be removed. The host fish culture component 300 can be a net cage. A net cage for raising host fish (usually yellow catfish) is set up around the fertile female mussels. The female mussel culture component 200 containing the fertile female mussels is placed in the upper middle position of the net cage so that when the female mussels release the glochidia larvae, they are quickly sucked into the gill cavity by the host fish, resulting in rapid parasitism.

[0041] In an optional implementation, the aquaculture body 100 may be provided with a number of female clam aquaculture components 200.

[0042] In an optional implementation, the plastic basket can be configured with host fish at a ratio of 1 kg to 1 fertile female clam.

[0043] Regarding the shape and structure of the 400 component for collecting juvenile mollusks, in detail:

[0044] The juvenile oyster collection component 400 includes a transport pipe 410 and a juvenile oyster collection piece. The inlet of the transport pipe 410 is connected to the bottom outlet of the aquaculture body 100; the outlet of the transport pipe 410 is connected to the juvenile oyster collection piece, or the outlet of the transport pipe 410 is used to connect to the juvenile oyster cultivation system.

[0045] Specifically, the transport pipe 410 is set as a silk screen pipe, which is made of 120 mesh silk screen. The preferred size is 100 mm in diameter and 1000 mm in length. The detached juvenile mussels and water flow out through the bottom outlet of the culture body 100 and pass through the silk screen pipe. The concentrated and collected juvenile mussels enter the juvenile mussel collection device or can be directly connected to the seedling tank or seedling bucket of the juvenile mussel cultivation system through the silk screen pipe.

[0046] In an optional embodiment, the juvenile mussel collection container can be a beaker. After the concentrated juvenile mussels are poured into the beaker, they are used for counting, which solves the problem that it is impossible to estimate the parasitic effect and the number of juvenile mussels in the existing traditional parasitism and juvenile removal processes. Among the optional counting methods, for example, a small amount of water mixture containing glochidia larvae can be extracted with a pipette for counting under a microscope, thereby estimating the total number of "glochidia larvae" in the container. Since the counting methods are well known to those skilled in the art, they will not be described in detail here.

[0047] In an optional embodiment, the outlet of the aquaculture body 100 is provided with a first control valve 500, which is located between the transport pipe 410 and the outlet of the aquaculture body 100 to facilitate the control of the outflow of juvenile mussels.

[0048] In an optional implementation, the outlet of the aquaculture entity 100 is equipped with a fish-blocking net to prevent host fish from flowing out.

[0049] In an optional embodiment, the juvenile clam collecting component 400 further includes a conical funnel 420, the inlet of which is connected to the outlet of the transport pipe 410; the outlet of the conical funnel 420 is connected to the juvenile clam collecting component.

[0050] Specifically, a conical funnel 420 made of stainless steel is fitted onto the outlet end of the transport pipe 410. The funnel is preferably 80 mm in diameter and 100 mm in length, and is equipped with a valve so that the concentrated juvenile mussels can be poured into a beaker for counting.

[0051] In an optional embodiment, the juvenile clam collection component 400 further includes a water storage tank 430, a transport pipe 410 and a conical funnel 420 disposed inside the water storage tank 430, and the conical funnel 420 passes through the bottom of the water storage tank 430 and communicates with the juvenile clam collection component.

[0052] In an optional embodiment, an overflow port 431 is provided on the upper part of the water storage tank 430.

[0053] Specifically, the silk screen and conical funnel 420 are immersed in the water storage tank 430, and the water flows out through the overflow port 431 at the top of the water storage tank 430. The outlet of the conical funnel 420 is connected to a beaker or the seedling tank or seedling bucket of the juvenile shell rearing system. During the collection process, water enters the water storage tank 430 through the mesh of the silk screen. The conical funnel 420 is equipped with a second control valve 800. During collection, the second control valve 800 is in the closed state. After a certain density of glochidia larvae is collected in the silk screen, the second control valve 800 is opened to allow the glochidia larvae to enter the beaker for inspection or enter the seedling system.

[0054] Preferably, the juvenile mussels that fall into the seedling tank or seedling bucket of the juvenile mussel cultivation system can be automatically distributed along the water flow to various seedling devices in subsequent processes.

[0055] The sieve mesh tube and the conical funnel 420 are immersed in the water storage tank 430 so that the sieve mesh tube can be shaken to prevent the sieve mesh from clogging and to facilitate the concentration of juvenile mussels into the conical funnel 420.

[0056] In an optional embodiment, the aquaculture body 100 is provided with a heating rod 600 and an oxygen head 700. The heating rod 600 is used to heat the liquid inside the aquaculture body 100, and the oxygen head is used to oxygenate the liquid inside the aquaculture body 100.

[0057] Preferably, the heating rod 600 and the oxygen head 700 can be located at the bottom of the mesh cage.

[0058] The device provided in this embodiment for parasitizing, temporarily holding host fish, and collecting juvenile mussels simulates the ecological habits of freshwater mollusks that require parasitic metamorphosis, achieving automatic parasitism and detachment. This embodiment completes the process of releasing the glochidia larvae of the female mussel onto the gills of the host fish, developing until maturity and detachment, all within a single device. It can also automatically collect juvenile mussels or directly transport them to the seedling system, significantly reducing labor costs and offering convenience and efficiency. This embodiment achieves temperature control and oxygenation within a high-density, intensive, and controllable range, and further realizes intelligent automation.

[0059] This device can be used to raise host fish or other valuable fish, shrimp and other aquatic products outside of the freshwater mussel breeding season.

[0060] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A device for temporarily holding host fish fry and collecting juvenile shellfish, characterized in that, include: The aquaculture main body (100), the female mussel aquaculture components (200), the host fish temporary holding components (300), and the juvenile mussel collection components (400); The female clam culture component (200) and the host fish temporary rearing component (300) are both located within the culture body (100). The female clam culture component (200) is connected to the host fish temporary rearing component (300). The female clam culture component (200) is used to culture female clams, and the glochidia larvae in the gill cavity of the female clam can enter the host fish temporary rearing component (300). The juvenile clam collection component (400) is located below the aquaculture body (100) and is connected to the outlet of the aquaculture body (100). The juvenile clam collection component (400) is used to collect juvenile clam that have detached from the host fish.

2. The device for temporarily holding host fish and collecting juvenile shellfish according to claim 1, characterized in that, The aquaculture body (100) is configured as a barrel-shaped structure, the host fish temporary holding component (300) is located in the middle of the aquaculture body (100), and the mother mussel aquaculture component (200) is connected to the top of the host fish temporary holding component (300).

3. The device for temporarily holding host fish fry and collecting juvenile shellfish according to claim 2, characterized in that, The diameter of the bottom of the aquaculture body (100) gradually decreases from the direction away from the host fish temporary holding component (300); The bottom outlet of the aquaculture body (100) is connected to the juvenile clam collection component (400).

4. The device for temporarily holding host fish fry and collecting juvenile shellfish according to claim 1, characterized in that, The juvenile clam collection component (400) includes a transport pipe (410) and a juvenile clam collection piece; The inlet of the transport pipeline (410) is connected to the bottom outlet of the aquaculture body (100); The outlet of the transport pipe (410) is connected to the juvenile clam collection device, or the outlet of the transport pipe (410) is used to connect to the juvenile clam cultivation system.

5. The device for temporarily holding host fish fry and collecting juvenile shellfish according to claim 4, characterized in that, The transport pipeline (410) is configured as a silk screen pipe.

6. The device for temporarily holding host fish fry and collecting juvenile shellfish according to claim 5, characterized in that, The juvenile clam collection component (400) further includes a conical funnel (420); The inlet of the conical funnel (420) is connected to the outlet of the transport pipe (410); The outlet of the conical funnel (420) is connected to the juvenile clam collector.

7. The device for temporarily holding host fish fry and collecting juvenile shellfish according to claim 6, characterized in that, The juvenile clam collection component (400) also includes a water storage tank (430); The transport pipe (410) and the conical funnel (420) are disposed inside the water storage tank (430), and the conical funnel (420) passes through the bottom of the water storage tank (430) and communicates with the juvenile clam collection device.

8. The device for temporarily holding host fish fry and collecting juvenile shellfish according to claim 7, characterized in that, The water storage tank (430) is provided with an overflow outlet (431) at the top.

9. The device for temporarily holding host fish fry and collecting juvenile shellfish according to claim 4, characterized in that, A first control valve (500) is provided between the transport pipeline (410) and the aquaculture entity (100).

10. The device for temporarily holding host fish fry and collecting juvenile shellfish according to claim 1, characterized in that, The aquaculture body (100) is equipped with a heating rod (600) and an oxygen head (700). The heating rod (600) is used to heat the liquid inside the aquaculture body (100), and the oxygen head (700) is used to oxygenate the liquid inside the aquaculture body (100).

Images