A simulated spawning site for producing super male fry of pseudo-female horsemouth fish

Abstract

The invention discloses a simulated spawning field suitable for producing super male mackerel fry from pseudo female mackerel, and specifically relates to the field of artificial breeding of all male mackerel, including a fish pond and an spawning and egg-collecting device; the spawning and egg-collecting device includes a simulated ecological flowing water sand bottom spawning field and an opening and closing mechanism for controlling the falling of quartz sand after spawning; the opening and closing mechanism includes a slide rail rod and a sealing slide plate, the slide rail rod is fixedly arranged at the lower end of the spawning pool, and the sealing slide plate is slidably connected to the slide rail rod. The simulated spawning field can simulate the requirements of mackerel spawning behavior under natural conditions on sand bottom and flowing water, avoid artificial squeezing of eggs to damage pseudo female mackerel broodstock, and improve the survival rate of pseudo female broodstock after spawning.

Description

Technical Field

[0001] The present application relates to the field of artificial breeding of all-male horse mackerel, and in particular to a simulated spawning farm for producing super-male seedlings of pseudo-female horse mackerel. Background Art

[0002] The black carp is a small, ferocious, omnivorous, carnivorous fish that is unique to East Asian streams. It is also known as peach blossom fish, pit crawler, wide mouth, etc. It belongs to the Cypriniformes, Cyprinidae, black carp subfamily (Opsariichthyinae), and black carp genus (Opsariichthys). Male black carp has bright colors and its adult size is much larger than that of females. Under the same breeding conditions, the body weight of commercial male black carp is more than 40% higher than that of female black carp. The rapidly developing market demand has prompted breeders and researchers to conduct research on the reproductive biology and all-male seed cultivation of black carp.

[0003] The breeding season of the mackerel is from the end of April to the end of July every year, and the breeding water temperature is 18℃-26℃. The traditional artificial breeding method uses hormone induction and artificial insemination. When the water temperature is stable above 20℃, select male and female broodstock with good gonadal development, and the male-female ratio is 5-8:1. The female fish is injected with a mixed hormone intraperitoneal injection of 600IU HCG+10ug LRH-A2 per kilogram. For specifications below 50g, 0.1mL per tail, and for specifications above 50g, 0.2mL per tail. When the effect time arrives, dry insemination is used, and an equal amount of clean water is added and poured into the hatching bucket while stirring. During the breeding operation, the abdomen of the female mackerel needs to be squeezed to discharge the eggs. In production, due to the incomplete synchronization of the hormone effect time, some broodstock need to be squeezed two or three times. However, due to the physical damage caused to the parent fish by conventional egg squeezing operation, the parent fish suffer from internal bleeding after spawning, with a mortality rate of over 50% within one week after spawning, and some even die directly during the operation.

[0004] In the process of breeding all-male fry of black carp, hormone induction and molecular marker sex identification are used to obtain pseudo-female fish (genotype XY), and super-male fish (genotype YY) are bred with normal male fish (genotype XY) to produce fry. Because the breeding and screening technology of pseudo-female fish is high, each pseudo-female black carp that can be used to breed and produce super-male fry is very precious. If traditional oxytocin injection and artificial egg squeezing are used to produce super-male fry, most pseudo-female fish will die. Therefore, how to promote pseudo-female black carp to spawn by simulating natural conditions, thereby reducing damage to pseudo-female broodstock, is a technical problem that technicians need to solve urgently. Summary of the invention

[0005] The invention provides a simulated spawning field for producing super male fry of pseudo female horsemouth fish, wherein the simulated spawning field can simulate the requirements of horsemouth fish for sand bottom and flowing water under natural conditions for spawning, avoid the damage of pseudo female horsemouth fish broodstock to artificial egg squeezing, and improve the survival rate of pseudo female broodstock after giving birth.

[0006] The objective of the present invention is achieved through the following technical solutions:

[0007] A simulated spawning site for producing super male fry of pseudo-female horsemouth fish comprises a fish pond and an spawning and egg collecting device; the spawning and egg collecting device comprises a spawning pond and an opening and closing mechanism for controlling the falling of quartz sand after spawning; the opening and closing mechanism comprises a slide rail rod and a sealing slide plate, the slide rail rod is fixedly arranged at the lower end of the spawning pond, and the sealing slide plate is slidably connected to the slide rail rod.

[0008] The design of the spawning and egg-collecting device simulates the requirements of the spawning behavior of the black carp under natural conditions for sandy bottom and flowing water, which can promote the spawning and fertilization of the black carp. After spawning, the quartz sand laid on the spawning pool can be removed by opening the sealing slide, so that clean fish eggs can be directly obtained.

[0009] Preferably, the number of the sealing slide plates is two, the two sealing slide plates are alternately provided with plug-in grooves, and the two sealing slide plates are plugged and fixed.

[0010] Among them, by designing staggered sealing slide plates, it is easier to control the falling of quartz sand.

[0011] Preferably, the spawning and egg-collecting device also includes a swing mechanism for accelerating the separation of quartz sand and eggs; the swing mechanism includes a rotating motor, a rotating rod, a connecting rod, a slide rail rod and a transmission connecting rod; the output end of the rotating motor is rotatably connected to the rotating rod, one end of the connecting rod is fixed to the rotating rod, and the other end is slidably connected to the slide rail rod, the end of the transmission connecting rod is fixed to the slide rail rod, and the slide rail rod is fixed to the side end of the transmission connecting rod.

[0012] Among them, the setting of the swing mechanism can accelerate the screening of quartz sand laid on the spawning pond, so as to collect clean fish eggs.

[0013] Preferably, a sand collecting pool for collecting quartz sand is provided below the spawning pool, and the spawning and egg collecting device also includes a vibration mechanism for preventing quartz sand from settling in the sand collecting pool; the vibration mechanism includes a transmission wheel, a transmission plate, a transmission rod and a cam vibration block; a transmission tooth portion is provided below the transmission connecting rod, and a transmission tooth meshing with the transmission tooth portion is provided at the side end of the transmission wheel; a transmission convex portion is provided on the side of the transmission wheel, and a rotating groove adapted for the transmission wheel to be embedded and rotated and a sliding groove adapted for the transmission convex portion to slide are provided on the transmission plate; one end of the transmission rod is fixed to the transmission plate, and the other end is fixed to the cam vibration block, and the cam vibration block is located at the lower end of the sand collecting pool.

[0014] The vibrating mechanism can prevent the quartz sand that falls on the sand collecting pool from settling. By periodically vibrating, the quartz sand can be shaken and flow along the running water to the side of the sand collecting pool, which is more conducive to recovery.

[0015] Preferably, the upper end of the slide rail rod is fixedly connected to a support rod, and a wave maker is provided on the support rod.

[0016] Preferably, a fixing rod is provided at one end of the support rod facing away from the slide rail rod, and a fixing buckle for fixing the wave maker is provided on the fixing rod.

[0017] Among them, the wave maker is fixed on the fixing buckle by buckling, which is more convenient for disassembly, maintenance or cleaning.

[0018] Preferably, a sliding protrusion is provided at one end of the connecting rod close to the slide rail rod, and correspondingly, a sliding groove is provided on the slide rail rod.

[0019] Preferably, the lower end of the sealing slide plate is fixedly connected to a scraper via a connecting rod.

[0020] Among them, the scraper is set to loosen the quartz sand accumulated in the sand collecting pool, making it easier to be washed to the side by running water and recovered.

[0021] Preferably, a fixed shelving rod is provided inside the fish pond, and the sand collecting pool is arranged above the fixed shelving rod.

[0022] Preferably, a sand collecting trough is provided at one end of the sand collecting pool away from the wave maker.

[0023] Compared with the prior art, the advantages or beneficial effects of the technical solution of the present application include:

[0024] 1. The equipment can be used to produce super-male seedlings from pseudo-female mackerel, simulating the spawning of mackerel in a natural environment (sand bottom stream), thereby avoiding damage to the broodstock by artificial squeezing of eggs and causing the death of pseudo-female broodstock.

[0025] 2. At the same time, this equipment can be used to carry out artificial breeding of pseudo-female horsemouth fish to produce all-male seedlings. It only needs to select breeding fish with well-developed gonads, without the need to inject hormones, and there is no need to check and test eggs many times, squeeze eggs one by one many times, and perform dry insemination operations, which can reduce the workload of staff and improve work efficiency.

[0026] 3. After the female false horsemouth fish has finished spawning, the staff can collect the eggs directly in the spawning pond without having to salvage the eggs in the breeding pond, which makes the operation more convenient.

[0027] 4. The opening and closing of the sealing slide plate is controlled by the opening and closing mechanism, so that during spawning, the quartz sand can fall through the sieve holes on the spawning pool, so that the fish eggs can be collected in the spawning pool, and the fish eggs and the quartz sand are easy to separate. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 A three-dimensional diagram of the simulated spawning site (indoor simulated pool) for producing super male fry for pseudomarginata;

[0029] Figure 2 It is a schematic diagram of the structure of the egg-laying and egg-collecting device (front);

[0030] Figure 3 for Figure 2 A magnified view of part A in FIG.

[0031] Figure 4 This is a schematic diagram of the structure of the egg-laying and egg-collecting device (back);

[0032] Figure 5 This is a schematic diagram of the structure of the spawning pond;

[0033] Figure 6 This is a schematic diagram of the structure of the spawning pond (with a scraper installed at the bottom);

[0034] Figure 7 A three-dimensional structural diagram of the simulated spawning ground for producing supermale fry for the pseudo-female horsemouth fish (top view).

[0035] In the figure: 2, rotating rod, 3, connecting rod, 4, slide rail rod, 7, supporting rod, 8, fixed rod, 9, wave maker, 10, fixing buckle, 11, first slide rail rod, 12, sealing slide plate, 13, ecological flowing water sand bottom spawning ground, 14, sand collecting trough, 15, sand collecting pool, 16, transmission connecting rod, 17, transmission rod, 18, cam vibration block, 19, transmission convex part, 20, transmission wheel, 22 transmission plate, 23, connecting rod, 24, scraper, 25, fixed shelf rod. DETAILED DESCRIPTION

[0036] The following will describe the implementation methods of the present application in detail with reference to the accompanying drawings and embodiments, so that the implementation process of how the present application applies technical means to solve technical problems and achieve corresponding technical effects can be fully understood and implemented accordingly. The embodiments of the present application and the various features in the embodiments can be combined with each other without conflict, and the technical solutions formed are all within the protection scope of the present application.

[0037] It should be clear that the embodiments described below are only part of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by technicians in the relevant field without making creative work are within the scope of protection of the present application. Example 1

[0038] This embodiment describes in detail the scheme of simulating a spawning site:

[0039] like Figure 1-Figure 7 As shown, the present embodiment provides a simulated spawning ground for producing super male seedlings of pseudo-female horsemouth fish, comprising a fish pond 1 and a spawning and egg-collecting device; the spawning and egg-collecting device comprises a simulated ecological flowing water sand bottom spawning ground 13 and an opening and closing mechanism for controlling the falling of quartz sand after spawning; the opening and closing mechanism comprises a first slide rail rod 11 and a sealing slide plate 12, the first slide rail rod 11 is fixedly arranged at the lower end of the simulated ecological flowing water sand bottom spawning ground 13, and the sealing slide plate 12 is slidably connected to the first slide rail rod 11; the number of the sealing slide plates 12 is two, and the two sealing slide plates 12 are staggeredly provided with plug-in grooves, and the two sealing slide plates 12 are plugged and fixed.

[0040] The connection relationship and working principle between the internal structures of the spawning and egg collecting device are as follows:

[0041] The staff can lay quartz sand on the simulated ecological flowing water sand bottom spawning ground 13 to simulate the stream ecological environment, which can promote the natural spawning of the carp. Before spawning, the sealing slides 12 on both sides are closed to prevent the quartz sand from falling from the sieve holes on the simulated ecological flowing water sand bottom spawning ground 13 and the plug-in slots on the sealing slides 12. After the spawning is completed, the sealing slides 12 on both sides are opened, and the quartz sand passes through the sieve holes, leaving clean fish eggs in the spawning pool.

[0042] like Figure 2-Figure 4 As shown, the spawning and egg-collecting device also includes a swing mechanism for accelerating the separation of quartz sand and eggs; the swing mechanism includes a rotating motor, a rotating rod 2, a connecting rod 3, a slide rail rod 4 and a transmission connecting rod 16; the output end of the rotating motor is rotationally connected to the rotating rod 2, one end of the connecting rod 3 is fixed to the rotating rod 2, and the other end is slidingly connected to the slide rail rod 4, the end of the transmission connecting rod 16 is fixed to the slide rail rod 4, and the first slide rail rod 11 is fixed to the side end of the transmission connecting rod 16. A sand collecting pool 15 for collecting quartz sand is provided below the ecological flowing water sand bottom spawning ground 13, and the spawning and egg collecting device also includes a vibration mechanism for preventing quartz sand from settling in the sand collecting pool 15; the vibration mechanism includes a transmission wheel 20, a transmission sheet 22, a transmission rod 17 and a cam vibration block 18; a transmission tooth portion is provided below the transmission connecting rod 16, and a transmission tooth meshed with the transmission tooth portion is provided at the side end of the transmission wheel 20; a transmission convex portion 19 is provided on the side of the transmission wheel 20, and a rotating groove adapted for the transmission wheel 20 to be embedded and rotated and a sliding groove adapted for the transmission convex portion 19 to slide are provided on the transmission sheet 22; one end of the transmission rod 17 is fixed to the transmission sheet 22, and the other end is fixed to the cam vibration block 18, and the cam vibration block 18 is located at the lower end of the sand collecting pool 15. A sliding convex portion 6 is provided at one end of the connecting rod 3 close to the slide rail rod 4, and correspondingly, a sliding groove is provided on the slide rail rod 4.

[0043] The connection relationship and working principle between the internal structures of the swing mechanism are as follows:

[0044] When the rotating motor drives the rotating rod 2 to rotate, the sliding protrusion 6 connected to the side end of the connecting rod 3 can be driven to move up and down on the sliding groove, and at the same time, the slide rail rod 4 can be driven to move left and right. Since the transmission connecting rod 16 and the slide rail rod 4 are fixed, the ecological flowing water sand bottom spawning field 13 fixed thereto can be driven to move left and right through the transmission connecting rod 16 (the first slide rail rod 11 and the side end of the transmission connecting rod 16 are fixed). Since the ecological flowing water sand bottom spawning field 13 frequently and periodically moves left and right, the quartz sand can be accelerated to fall from the through hole of the ecological flowing water sand bottom spawning field 13. Therefore, after the accelerated screening by the swing mechanism, the staff can obtain pure fish eggs.

[0045] The connection relationship and working principle between the internal structures of the vibration mechanism are as follows:

[0046] When the quartz sand falls from the through hole of the ecological flowing water sand bottom spawning ground 13, it will fall into the sand collecting pool 15 and be collected, so as to be reused. When the transmission connecting rod 16 drives the transmission wheel 20 meshed with it to rotate, if the transmission wheel 20 is in the rotating groove on the transmission plate 22, it will rotate with it until the transmission protrusion 19 enters the chute adjacent to the rotating groove. The transmission wheel 20 rotates again, and the transmission protrusion 19 can enter the next rotating groove after exiting the chute.

[0047] When the transmission wheel 20 is rotationally connected to the rotating groove, the transmission rod 17 will not be driven to rotate. When the transmission protrusion 19 enters the slide groove, the transmission plate 22 will be driven to rotate slightly, thereby driving the transmission rod 17 to rotate, thereby causing the cam vibration block 18 to rotate, pushing up the sand collecting pool 15, causing it to vibrate briefly and periodically.

[0048] like Figure 6 As shown, the lower end of the sealing slide plate 12 is fixedly connected to a scraper 24 through a connecting rod 23. The function of the scraper 24 is to scrape or loosen the quartz sand to prevent the quartz sand from settling at the bottom of the sand collecting pool 15, making it difficult to recover. When some equipment is used, the scraper 24 connected below the connecting rod 23 can be designed to be one-way flipping, that is, the scraper 24 can scrape the quartz sand to one place to facilitate the staff to recover or centrally process it.

[0049] like Figure 7 As shown, a fixed shelf rod 25 is provided inside the fish pond 1 , and the sand collecting pool 15 is arranged above the fixed shelf rod 25 .

[0050] like Figure 2As shown, the end of the sand collecting pool 15 away from the wave maker 9 is provided with a sand collecting trough 14. At the same time, above the sand collecting trough 14, the end of the ecological flowing water sand bottom spawning ground 13 is provided with an egg collecting trough, and the staff collects fish eggs through the egg collecting trough, which is more convenient and quick. Example 2

[0051] This embodiment supplements the application parameters of the egg-laying and egg-collecting device:

[0052] 1. The bottom of the ecological flowing water sand bottom spawning ground 13 and the sand collecting pool 15 is an inclined plane, and its inclination angle is 15°-20°. The advantage of the oblique setting is that it can facilitate the fish eggs / quartz sand to be brought to one end by the flowing water, so that it is more conducive to the collection of technicians.

[0053] 2. The aperture of the through hole at the bottom of the ecological flowing water sand bottom spawning ground 13 is 1.2 mm, and the particle size of the quartz sand is 0.6-0.8 mm. The thickness of the quartz sand is 1-2 mm.

[0054] The reason for the above design is that the diameter of the roe of the croaker is 1.4-1.6 mm. The aperture of the through hole at the bottom of the ecological flowing sand bottom spawning ground 13 is designed to be 1.2 mm, which is conducive to the falling of quartz sand, while the roe remains in the ecological flowing sand bottom spawning ground 13, thereby achieving the separation of the two.

[0055] 3. The length of the sand collecting pool 15 is 40 cm greater than the simulated ecological flowing water sand bottom spawning ground 13, and the sand collecting pool 15 is centrally arranged. Example 3

[0056] In outdoor breeding ponds, the spawning and egg collection device can also be installed to collect fish eggs. The specific setting parameters are:

[0057] Taking a fish pond with a width of 20m and a length of 30m as an example, it is only necessary to set up a spawning and egg-collecting device at each end of the fish pond corresponding to the width. The installation position should be at the end of the water flow. After the wave maker is started, the school of mackerel will be attracted to spawn, so the output end of the wave maker should be located at the simulated ecological flowing water sand bottom spawning ground 13.

Claims

1. A simulated spawning farm for producing super male fry of pseudo-female horsemouth fish, characterized in that: It comprises a fish pond (1) and an spawning and egg-collecting device; The spawning and egg-collecting device comprises an ecological flowing water sand bottom spawning ground (13) and an opening and closing mechanism for controlling the falling of quartz sand after spawning; the opening and closing mechanism comprises a first slide rail rod (11) and a sealing slide plate (12); the first slide rail rod (11) is fixedly arranged at the lower end of the ecological flowing water sand bottom spawning ground (13); the sealing slide plate (12) is slidably connected to the first slide rail rod (11); The spawning and egg-collecting device also includes a swing mechanism for accelerating the separation of quartz sand and eggs; The swing mechanism comprises a rotating motor, a rotating rod (2), a connecting rod (3), a slide rail rod (4) and a transmission connecting rod (16); The output end of the rotating motor is rotationally connected to the rotating rod (2), one end of the connecting rod (3) is fixed to the rotating rod (2), and the other end is slidingly connected to the slide rail rod (4), the end of the transmission connecting rod (16) is fixed to the slide rail rod (4), and the first slide rail rod (11) is fixed to the side end of the transmission connecting rod (16); A sand collecting pool (15) for collecting quartz sand is provided below the ecological flowing water sand bottom spawning ground (13), and the spawning and egg collecting device also includes a vibration mechanism for preventing quartz sand from settling in the sand collecting pool (15); The vibration mechanism comprises a transmission wheel (20), a transmission sheet (22), a transmission rod (17) and a cam vibration block (18); A transmission tooth portion is provided below the transmission connecting rod (16), and a transmission tooth meshing with the transmission tooth portion is provided at a side end of the transmission wheel (20); A transmission convex portion (19) is provided on the side of the transmission wheel (20), and a rotation groove adapted for the transmission wheel (20) to be embedded and rotated and a sliding groove adapted for the transmission convex portion (19) to slide are provided on the transmission sheet (22); One end of the transmission rod (17) is fixed to the transmission plate (22), and the other end is fixed to the cam vibration block (18), and the cam vibration block (18) is located at the lower end of the sand collecting pool (15).

2. The simulated spawning farm for producing super male fry of pseudo-female horsemouth fish according to claim 1, characterized in that: The number of the sealing slide plates (12) is two, and the two sealing slide plates (12) are alternately provided with plug-in grooves, and the two sealing slide plates (12) are plugged and fixed.

3. The simulated spawning farm for producing super male fry of pseudo-female horsemouth fish according to claim 1, characterized in that: The upper end of the slide rail rod (4) is fixedly connected to a support rod (7), and a wave maker (9) is provided on the support rod (7).

4. The simulated spawning farm for producing super male fry of pseudo-female horsemouth fish according to claim 3, characterized in that: A fixing rod (8) is provided at one end of the support rod (7) facing away from the slide rail rod (4), and a fixing buckle (10) for fixing the wave maker (9) is provided on the fixing rod (8).

5. The simulated spawning farm for producing super male fry of pseudo-female horsemouth fish according to claim 1, characterized in that: A sliding protrusion (6) is provided at one end of the connecting rod (3) close to the slide rail rod (4), and correspondingly, a sliding groove is provided on the slide rail rod (4).

6. The simulated spawning farm for producing super male fry of pseudo-female horsemouth fish according to claim 1, characterized in that: The lower end of the sealing slide plate (12) is fixedly connected to a scraper blade (24) via a connecting rod (23).

7. The simulated spawning farm for producing super male fry of pseudo-female horsemouth fish according to claim 1, characterized in that: A fixed shelf rod (25) is provided inside the fish pond (1), and the sand collecting pool (15) is arranged above the fixed shelf rod (25).

8. The simulated spawning farm for producing super male fry of pseudo-female horsemouth fish according to claim 4, characterized in that: A sand collecting trough (14) is provided at one end of the sand collecting pool (15) away from the wave maker (9).

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