Tinariichthys bidens egg laying and collecting equipment

Abstract

The invention discloses opsariichthys bidens spawning and egg collecting equipment, and particularly belongs to the technical field of opsariichthys bidens spawning and breeding, the opsariichthys bidens spawning and egg collecting equipment comprises a hollow tank body with one end open, an egg collecting plate, a wave maker, a fish blocking plate, an aeration pipe and an oxygen pump; the egg collecting plate is detachably arranged in the tank body; the fish blocking plate is arranged in the tank body in a sliding manner; one end of the aeration pipe is communicated with the tank body, the other end of the aeration pipe is communicated with the oxygen pump, and the connecting site of the aeration pipe and the tank body corresponds to the position of the side of the egg collecting plate; the wave maker is fixedly arranged on the inner side wall of the tank body and arranged at the end away from the egg collecting plate. The opsariichthys bidens egg laying and collecting equipment has the advantages that the natural egg laying environment of opsariichthys bidens can be simulated, and the following survival rate of opsariichthys bidens is reduced due to the fact that opsariichthys bidens is damaged by manual egg collection.

Description

Technical Field

[0001] This invention belongs to the field of spawning and aquaculture technology for chub, specifically relating to a spawning and egg collection device for chub. Background Technology

[0002] The bidens (Opsariichthys bidens) is a small fish that lives in mountain streams. Also known as the flower-forked fish, peach blossom fish, pit-crawler, and wide-mouthed fish, it belongs to the order Cyprinoidei, family Xenocyprididae, subfamily Opsariichthyinae, and genus Opsariichthys. It is a small, omnivorous, predatory fish endemic to East Asian streams. Due to overfishing, river pollution, and dam construction, the natural population of bidens has declined sharply. Because of its tender and delicious flesh and high nutritional value, it has become increasingly popular with consumers in recent years, becoming one of the representative stream fish species for mountain tourism. Male bidens are also highly valued for their vibrant colors and ornamental appeal. Rapidly growing market demand has prompted aquaculture farmers and researchers to conduct research on the reproductive biology and artificial breeding of bidens.

[0003] Traditional artificial breeding methods for chub involve hormone-induced spawning and artificial insemination. The breeding season for chub is from late April to late July each year, with a breeding water temperature of 18℃-26℃. When the water temperature is consistently above 20℃, select broodstock older than one year old. Females should have a swollen, soft, and elastic abdomen. Males should have vibrant colors and obvious breeding tubercles; a small amount of sperm should flow out when the abdomen is gently pressed. The female-to-male ratio is 5-8:1. Hormone-induced spawning is administered via a single intraperitoneal injection of 600 IU HCG + 10 μg LRH-A2 per kilogram of females. For fish under 50g, the dosage is 0.1 mL per fish; for fish over 50g, the dosage is 0.2 mL per fish. After hormone injection, the broodstock are placed in a cement tank and subjected to flowing water stimulation. Regular checks are performed based on the water temperature. Artificial insemination begins when more than half of the females can successfully expel eggs. After dry insemination, an equal volume of clean water is added and poured into the hatching tank while stirring. A conical hatching tank is used, with an egg release rate of 800,000 eggs per m3 of water. Dissolved oxygen levels must be above 5 mg / L, and the water flow rate should be such that the fish eggs do not sink to the bottom or accumulate.

[0004] However, traditional methods for spawning in chub all involve artificial intervention, such as squeezing the chub's abdomen to expel the eggs or injecting hormones to induce spawning. These practices not only increase the workload for farmers but also drastically reduce the survival rate of the chub after artificial intervention, with some even dying during the process. Summary of the Invention

[0005] The purpose of this invention is to provide a spawning and egg collection device for chub, which can simulate the natural spawning environment of chub and avoid the harm caused to chub by artificial egg collection, thus reducing its subsequent survival rate.

[0006] To achieve the above objectives, the present invention provides the following technical solution:

[0007] A spawning and collection device for chub includes a hollow tank with one open end, an egg collection plate, a wavemaker, a fish barrier, an aeration pipe, and an oxygen pump. The egg collection plate is detachably installed inside the tank. The fish barrier is slidably installed inside the tank. One end of the aeration pipe is connected to the tank, and the other end is connected to the oxygen pump. The connection point between the aeration pipe and the tank corresponds to the position of the side of the egg collection plate. The wavemaker is fixedly installed on the inner wall of the tank, and the wavemaker is located at the end away from the egg collection plate.

[0008] Preferably, the number of fish barriers is three, and each of the two ends of the fish barriers is provided with clamps for fixing to the side wall of the cylinder.

[0009] Preferably, the egg collection plate is dish-shaped, and a fixed support groove is provided on the side of the egg collection plate. Correspondingly, a fixed protrusion adapted to the fixed support groove is provided on the side end of the cylinder body.

[0010] Preferably, the egg collecting plate is provided with sieve holes, the sieve holes having a diameter of 1 mm.

[0011] As a preferred material, the egg collection plate is made of stainless steel.

[0012] Preferably, the egg collection board is covered with fine sand with a particle size of 0.3 to 0.5 mm and a laying height of 8 to 10 cm.

[0013] Preferably, a first support ring and a second support ring are rotatably provided on both sides of the cylinder body, and the distance between the second support ring and the bottom of the cylinder body is greater than the distance between the second support ring and the bottom of the cylinder body.

[0014] Preferably, the spawning and egg collection device for chub also includes a cover plate to prevent the chub from jumping out. The cover plate includes a first sliding plate and a second sliding plate. The cylinder opening end is provided with an extension portion. The first sliding plate and the second sliding plate can slide on the extension portion. The first sliding plate is provided with a groove adapted to the embedding of the second sliding plate.

[0015] Preferably, the extension portion is provided with a sliding groove, and the lower ends of the first sliding plate and the second sliding plate are both provided with sliding protrusions that are adapted to the sliding groove.

[0016] Preferably, the spawning and egg collection equipment for chub also includes a main connecting pipe and an air inlet pipe. There are multiple aeration pipes, and the ends of the multiple aeration pipes facing away from the tank are all connected to the main connecting pipe. One end of the air inlet pipe is connected to an oxygen pump, and the other end is connected to the main connecting pipe.

[0017] Preferably, the side end of the cylinder is connected to a drain pipe, and the drain pipe is equipped with an on / off valve.

[0018] The beneficial effects of this invention are as follows:

[0019] By using this equipment to raise chub, the spawning of chub can be simulated in the natural environment (stream), thus avoiding the low survival rate of chub caused by artificial intervention to induce spawning.

[0020] Meanwhile, the natural spawning of the chub reduces the workload of staff, as it eliminates the need for staff to inject hormones to induce spawning or to squeeze the chub's abdomen to collect eggs, thus greatly improving egg collection efficiency. Attached Figure Description

[0021] Figure 1 A schematic diagram of a spawning and egg collection device for chub;

[0022] Figure 2 A schematic diagram of a spawning and egg collection device for chub (without a cover);

[0023] Figure 3 This is a schematic diagram (partial cross-section) of a spawning and egg collection device for chub.

[0024] In the diagram: 1. Cylinder body, 10. Fixed protrusion, 11. Extension, 12. Sliding groove, 13. Fish barrier, 14. Sewage pipe, 15. Main connecting pipe, 16. Air inlet pipe, 17. Aeration pipe, 18. Second support fixing ring, 19. Egg collection plate, 20. Wave generator, 22. First sliding plate, 23. Second sliding plate. Detailed Implementation

[0025] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0026] like Figures 1-3As shown, a spawning and collection device for chub includes a hollow tank 1 with one open end, an egg collection plate 19, a wave generator 20, a fish barrier 13, an aeration pipe 17, and an oxygen pump. The egg collection plate 19 is detachably installed inside the tank 1. The fish barrier 13 is slidably installed inside the tank 1. One end of the aeration pipe 17 is connected to the tank 1, and the other end is connected to the oxygen pump. The connection point between the aeration pipe 17 and the tank 1 corresponds to the position of the side of the egg collection plate 19. The wave generator 20 is fixedly installed on the inner wall of the tank 1, and the wave generator 20 is located at the end away from the egg collection plate 19.

[0027] In this embodiment, the chub can be cultured in tank 1. When the chub are about to spawn, the fish barrier 13 can be used to concentrate them above the egg collection plate 19. After the chub have finished spawning, the fish barrier 13 can be pushed to move the chub away from the egg collection plate 19. The staff can then lift the egg collection plate 19 and shake it to cause the fine sand on top to fall off, thus exposing the chub eggs.

[0028] To prevent the chub from concentrating in a small area during spawning, which could lead to oxygen deprivation and death, oxygen is supplied to both sides of the egg collection plate 19 via an aeration pipe 17 connected to an oxygen pump. This ensures that the chub and their eggs receive sufficient oxygen, preventing them from dying from oxygen deficiency.

[0029] Meanwhile, a wave generator 20 is installed on the inner side of the tank 1. The wave generator 20 can create a wave-like water flow in the tank 1, simulating the living environment of the chub in a natural stream, which is conducive to the spawning of the chub.

[0030] like Figure 2 As shown, there are three fish-blocking plates 13, and each end of the fish-blocking plate 13 is equipped with clamps for fixing it to the side wall of the tank 1. The fish-blocking plates 13 can slide inside the tank 1, and the operator can operate the moving fish-blocking plates 13 to drive the chub fish to move left and right.

[0031] like Figure 3 As shown, the egg collection plate 19 is dish-shaped, and a fixed placement groove is provided on the side of the egg collection plate 19. Correspondingly, a fixed protrusion 10 adapted to the fixed placement groove is provided on the side end of the tank body 1. The dish-shaped egg collection plate 19 can be used to collect fish eggs and prevent fish eggs from falling into the tank body 1.

[0032] In this embodiment, the egg collection plate 19 is provided with sieve holes, and the sieve hole diameter is 1mm.

[0033] In this embodiment, the egg collection plate 19 is made of stainless steel.

[0034] In this embodiment, the egg collection plate 19 is covered with fine sand with a particle size of 0.3 to 0.5 mm and a laying height of 8 to 10 cm.

[0035] When the chub have finished spawning, the staff shakes the egg collection plate 19, and the fine sand can flow down through the sieve holes in the egg collection plate 19, leaving only the fish eggs on the egg collection plate 19 (the diameter of the fish eggs is greater than 1.2 to 1.5 mm, which is larger than the diameter of the sieve holes, so they will not fall through the sieve holes).

[0036] like Figure 3 As shown, a first mounting ring 18 and a second mounting ring are respectively rotatably provided on both sides of the cylinder body 1. The distance between the second mounting ring 18 and the bottom of the cylinder body 1 is greater than the distance between the second mounting ring and the bottom of the cylinder body 1.

[0037] When the chub have finished spawning, workers can place the two ends of the egg collection plate 19 on the second and first support rings 18 respectively, creating a height difference so that the eggs concentrate at the lower end of the egg collection plate 19. Workers can then collect the eggs using a net or a suction pump.

[0038] like Figure 2 As shown, the spawning and egg collection device for chub also includes a cover plate to prevent chub from jumping out. The cover plate includes a first sliding plate 22 and a second sliding plate 23. The opening end of the cylinder 1 is provided with an extension 11. The first sliding plate 22 and the second sliding plate 23 can slide on the extension 11. The first sliding plate 22 is provided with a groove adapted to the second sliding plate 23.

[0039] The cover plate prevents the chub from jumping out when spawning or moving. The first sliding plate 22 and the second sliding plate 23 can be extended or shortened as needed. In practice, the chub are raised between two fish barriers 13, and the cover plate only needs to cover the area between the two barriers 13 to prevent the chub from jumping out.

[0040] In this embodiment, the extension portion is provided with a sliding groove 12, and the lower ends of the first sliding plate 22 and the second sliding plate 23 are both provided with sliding protrusions that are adapted to the sliding groove 12.

[0041] In this embodiment, a spawning and egg collection device for chub also includes a main connecting pipe 15 and an air inlet pipe 16. There are multiple aeration pipes 17, and the ends of the multiple aeration pipes 17 facing away from the cylinder 1 are all connected to the main connecting pipe 15. One end of the air inlet pipe 16 is connected to an oxygen pump, and the other end is connected to the main connecting pipe 15.

[0042] In this embodiment, a drain pipe 14 is connected to the side end of the cylinder 1, and an opening and closing valve is provided on the drain pipe 14.

[0043] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A spawning and egg collection device for chub, characterized in that, It includes a hollow tank (1) with one end open, an egg collection plate (19), a wave generator (20), a fish barrier (13), an aeration pipe (17), and an oxygen pump; The egg collection plate (19) is detachably installed inside the cylinder (1); The fish barrier (13) is slidably disposed inside the cylinder (1); One end of the aeration pipe (17) is connected to the cylinder (1), and the other end is connected to the oxygen pump. The connection point between the aeration pipe (17) and the cylinder (1) corresponds to the position of the side of the egg collection plate (19). The wave generator (20) is fixedly installed on the inner side wall of the cylinder (1), and the wave generator (20) is located at the end away from the egg collection plate (19).

2. The spawning and egg collection device for chub according to claim 1, characterized in that, There are three fish-blocking plates (13), and each end of the fish-blocking plate (13) is provided with a clamp for fixing to the side wall of the cylinder (1).

3. The spawning and egg collection device for chub according to claim 1, characterized in that, The egg collection plate (19) is dish-shaped, and a fixed support groove is provided on the side of the egg collection plate (19). Correspondingly, the side end of the cylinder body (1) is provided with a fixed protrusion (10) that is adapted to the fixed support groove.

4. The spawning and egg collection device for chub according to claim 3, characterized in that, The egg collection plate (19) is provided with sieve holes, the diameter of which is 1 mm.

5. The spawning and egg collection device for chub according to claim 3, characterized in that, The material of the egg collection plate (19) is stainless steel.

6. The spawning and egg collection device for chub according to claim 1, characterized in that, Fine sand with a particle size of 0.3 to 0.5 mm and a laying height of 8 to 10 cm is laid on the egg collection plate (19).

7. The spawning and egg collection device for chub according to claim 1, characterized in that, The cylinder (1) is provided with a first support ring (18) and a second support ring at its two ends respectively. The distance between the second support ring (18) and the bottom of the cylinder (1) is greater than the distance between the second support ring and the bottom of the cylinder (1).

8. The spawning and egg collection device for chub according to claim 1, characterized in that, It also includes a cover plate to prevent the chub from jumping out. The cover plate includes a first sliding plate (22) and a second sliding plate (23). The cylinder body (1) has an extension (11) at the open end. The first sliding plate (22) and the second sliding plate (23) can slide on the extension (11). The first sliding plate (22) has a groove adapted to be embedded in the second sliding plate (23).

9. The spawning and egg collection device for chub according to claim 7, characterized in that, The extension portion is provided with a sliding groove (12), and the lower ends of the first sliding plate (22) and the second sliding plate (23) are provided with sliding protrusions that are adapted to the sliding groove (12).

10. The spawning and egg collection device for chub according to claim 7, characterized in that, It also includes a main connecting pipe (15) and an air inlet pipe (16). There are multiple aeration pipes (17). The ends of the multiple aeration pipes (17) facing away from the cylinder body (1) are all connected to the main connecting pipe (15). One end of the air inlet pipe (16) is connected to the oxygen pump, and the other end is connected to the main connecting pipe (15).

11. The spawning and egg collection device for chub according to claim 1, characterized in that, The side end of the cylinder (1) is connected to a drain pipe (14), and the drain pipe (14) is equipped with an opening and closing valve.

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