Net cage for breeding hucho bleekeri

Abstract

The utility model discloses a Hucho bleekeri Kimura breeding net cage, after artificial injection of oxytocic needles, matched male and female parent fishes can be placed in the net cage, and the net cage comprises a supporting frame, a first soft cushion, an isolation net, a cobblestone layer, an egg collecting net, an egg collecting valve, an overturning cover, a second soft cushion, a lock catch, a light inlet window and a dragging ring. A first soft cushion is arranged at the top end in the supporting frame; the whole net cage can simulate the substrate environment of a natural spawning site of hucho bleekeri and promote the hucho bleekeri to breed automatically under the action of spawning induction medicine, so that the breeding efficiency of the hucho bleekeri is guaranteed, the hucho bleekeri can be prevented from being damaged by manual extrusion and the like, and the purposes of reducing the postpartum death rate of parent fishes and recycling the parent fishes are achieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to fish culture technical field especially relates to a Hucho bleekeri breeding net cage in Sichuan and Shanxi. BACKGROUND

[0002] Hucho bleekeri belongs to salmoniform, salmonidae and oncorhynchus, is the rare and endangered cold water fish peculiar to China, is also the lowest latitude species among the five existing oncorhynchus in the world, has the extremely special ecology and scientific research value, historically, Hucho bleekeri has been widely distributed in the upstream of Minjiang River and Qingyi River, the upstream of Daduhe River, the tributary of Hanjiang River, Yushui River and Taibei River and the mountain stream in the south of Qinling, but due to overfishing and habitat destruction, its natural resource quantity has decreased linearly, as early as 1988, it was listed as national grade II protected wild animals, in 1998, it was listed in the red data book of endangered animals in China, in 2012, it was listed in the red list of endangered species of the International Union for Conservation of Nature (IUCN), and in 2021, it was listed as national grade I protected animals due to the brink of extinction, and artificial rescue is urgently needed.

[0003] In the artificial rescue work of endangered fish, the most direct and effective way is to use artificial breeding technology to cultivate a large number of offspring fry, and then to supplement the wild population quantity in the form of propagation and release; in order to ensure the sustainability of the propagation and release work, the first priority is to avoid the damage and death of parent fish during artificial breeding, and then to realize the sustainable use of the fertile parent fish.

[0004] In fact, the demand for solving the problem of parent fish preservation in Hucho bleekeri artificial rescue work is more urgent, and the main reasons are as follows: first, Hucho bleekeri belongs to large carnivorous fish, and its temperament is fierce, especially after injecting the spawning needle to the time before taking the sperm and egg, not only the males during estrus will fight more fiercely for the right to mate, but also the males and females will chase each other due to the instinct of courtship, and the parent fish will often be damaged by colliding with the pool wall and then infected and die; secondly, the traditional artificial spawning method is to catch the parent fish first, then anesthetize, then repeatedly squeeze the fish abdomen to force the parent fish to expel the sperm and egg, and then artificially inseminate; in the process of taking sperm and egg, the internal organs of the fish are often damaged due to repeated squeezing, so that blood sperm and blood egg are taken out, which not only causes serious damage to the parent fish, but also makes the fertilization rate of the sperm and egg decrease greatly due to blood pollution, so it is not worth the loss; finally, the number of existing fertile parent fish of Hucho bleekeri is very small, and its sexual maturity time is very late, at least 5-6 years are needed to cultivate under artificial breeding conditions to achieve initial sexual maturity, therefore, once the few existing fertile parent fish are lost, the supplement period will be very long, which will seriously delay the progress of Hucho bleekeri artificial rescue work, and even cause stagnation; therefore, it is necessary to design a Hucho bleekeri breeding net cage according to the above situation. Utility model content

[0005] The utility model discloses a kind of chuan shan chum salmon breeding net cages, to solve the problem of the death of parent fish in the artificial breeding process.

[0006] To solve the above technical problems, the utility model provides the following technical scheme: a kind of chuan shan chum salmon breeding net cages, including support frame, first soft pad, isolation net, pebble layer, egg collection net, egg collection valve, turnover cover, second soft pad, lock catch, light-transmitting window, connecting rope and tow ring, the inside top of the support frame is provided with first soft pad, the bottom of first soft pad is provided with isolation net, the top of isolation net is paved with pebble layer, the bottom of isolation net is provided with egg collection net, the top side of support frame is rotatably connected with turnover cover, top reinforcing rib is provided in turnover cover, window frame is fixed in top reinforcing rib, light-transmitting window is installed in window frame, the top of the outside of support frame is symmetrically provided with connecting rope, one end of connecting rope is fixed on tow ring.

[0007] As a further technical scheme of the utility model, the bottom of the egg collection net is provided with an egg collection valve.

[0008] As a further technical scheme of the utility model, the first soft pad is attached to the horizontal reinforcing ribs, which are evenly welded to the support frame.

[0009] As a further technical scheme of the utility model, vertical reinforcing ribs are welded to the horizontal reinforcing ribs, and the top ends of the vertical reinforcing ribs are welded to the support frame.

[0010] As a further technical scheme of the utility model, the other side of the top of the support frame is provided with a lock catch.

[0011] As a further technical scheme of the utility model, a second soft pad is provided on the inner wall of the turnover cover.

[0012] As a further technical scheme of the utility model, a lock catch is provided on the turnover cover.

[0013] The breeding net cage of the Sichuan-Shaanxi Oncorhynchus masou has the advantages that after artificial injection of the labor-inducing needle, the male and female parent fish placed in the net cage can be effectively prevented from being injured by colliding with the pool wall, the lock opening and the lock catch are matched to be locked to prevent the parent fish from jumping out of the net cage, the connecting ropes and the towing rings symmetrically distributed can fix the net cage from four directions to prevent the net cage from colliding due to random movement, the light-transmitting window on the turnover cover can provide light for the parent fish and also facilitate the management personnel to patrol and observe the behavior and state of the parent fish, the smooth goose stones laid on the isolation net form the goose stone layer, which can provide materials for the parent fish to excavate the ovary and also can prevent the parent fish from being scratched, the aperture of 1cm on the isolation net can make the fertilized eggs quickly sink into the egg collecting net, and then the management personnel can quickly remove the fertilized eggs for artificial incubation, the whole net cage can simulate the bottom environment of the natural spawning ground of the Sichuan-Shaanxi Oncorhynchus masou to promote the self-reproduction of the Sichuan-Shaanxi Oncorhynchus masou under the action of the labor-inducing drug, so that the reproduction efficiency is ensured and the parent fish is prevented from being damaged by artificial extrusion, thereby the postpartum mortality of the parent fish is reduced and the recycling of the parent fish is realized. BRIEF DESCRIPTION OF DRAWINGS

[0014] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, a brief introduction will be given to the drawings required to be used in the embodiments or prior art description. Obviously, the drawings in the following description are some embodiments of the present utility model, and other drawings can also be obtained by those skilled in the art without creative labor.

[0015] Figure 1 It is a whole structure schematic view of the present utility model;

[0016] Figure 2 It is a bottom view structure schematic view of the present utility model;

[0017] Figure 3 It is a whole structure explosion view of the present utility model;

[0018] Figure 4 It is a local structure three-dimensional view of the present utility model.

[0019] In the drawing: 1, support frame;2, first soft pad;3, isolation net;4, goose stone layer;5, egg collecting net;6, egg collecting valve;7, horizontal reinforcing rib;8, vertical reinforcing rib;9, lock opening;10, turnover cover;11, second soft pad;12, lock catch;13, top reinforcing rib;14, window frame;15, light-transmitting window;16, connecting rope;17, towing ring. DETAILED DESCRIPTION

[0020] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described in the following with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the person skilled in the art without creative labor belong to the protection scope of the utility model.

[0021] Please refer to the drawings Figure 1 - the drawings Figure 4 An embodiment provided by the utility model: a chuan shan oncorhynchus keta breeding net cage, including support frame 1, first soft pad 2, isolation net 3, pebble layer 4, egg collecting net 5, egg collecting valve 6, horizontal reinforcing rib 7, vertical reinforcing rib 8, lock mouth 9, turnover cover 10, second soft pad 11, lock catch 12, top reinforcing rib 13, window frame 14, light-transmitting window 15, connecting rope 16 and tow ring 17, the inside top of support frame 1 is provided with first soft pad 2, the bottom of first soft pad 2 is provided with isolation net 3, the top of isolation net 3 is paved with pebble layer 4, the bottom of isolation net 3 is provided with egg collecting net 5, one side of the top of support frame 1 is rotatably connected with turnover cover 10, top reinforcing rib 13 is arranged in turnover cover 10, window frame 14 is fixed between top reinforcing rib 13, light-transmitting window 15 is installed in window frame 14, the outside top of support frame 1 is symmetrically provided with connecting rope 16, one end of connecting rope 16 is fixed on tow ring 17;The bottom of egg collecting net 5 is provided with egg collecting valve 6;First soft pad 2 is attached on horizontal reinforcing rib 7, and horizontal reinforcing rib 7 is evenly welded on support frame 1;Vertical reinforcing rib 8 is welded on horizontal reinforcing rib 7, and the top end of vertical reinforcing rib 8 is welded on support frame 1;The other side of the top of support frame 1 is provided with lock mouth 9;Second soft pad 11 is arranged on the inner wall of turnover cover 10;Lock catch 12 is arranged on turnover cover 10, and lock catch 12 is clamped in lock mouth 9 to realize the closure of net cage after turnover cover 10 is covered;First soft pad 2 and second soft pad 11 are all soft material integrally made of plastic material, and the thickness is 3cm, which can prevent the injury of brood fish, light-transmitting window 15 with the side length of 5cm is installed in window frame 14, which is convenient for observing the inside, isolation net 3 is used for supporting the smooth pebble with the diameter of 2-8cm, the mesh size of isolation net 3 is 1cm, the top of isolation net 3 is paved with pebble layer 4, the bottom of isolation net 3 is four-prism-shaped egg collecting net 5, and the mesh size of egg collecting net 5 is less than 3mm to prevent the loss of fish eggs;

[0022] Specifically, the utility model discloses, the net box main support structure is formed by support frame 1 and the isolation net 3, the first soft pad 2 and the second soft pad 11 are laid respectively on the upper half of net box and the inner side of turnover cover 10, can effectively avoid the injury of spawning fish colliding with pool wall, lock 9 and lock catch 12 cooperation can be locked to prevent spawning fish from jumping out of the net box, the connection rope 16 and the tow ring 17 of symmetrical distribution can fix the net box from 4 directions, prevent the net box from moving at random and collide, the light window 15 on turnover cover 10 provides light for spawning fish simultaneously and also facilitates the management personnel to patrol, observe spawning fish behavior and state, the goose egg stone layer 4 is laid on the isolation net 3 and comprises the goose egg stone layer 4, provides material for spawning fish to excavate ovary simultaneously and also can avoid scratching spawning fish, cooperation 1cm aperture on the isolation net 3 can make the rapid sinking of the fertilized egg to the egg collecting net 5, and then facilitate the management personnel to remove the fertilized egg and carry out artificial incubation, the whole net box can simulate the bottom environment of the natural spawning ground of chuan-shan chum salmon, promote its self-reproduction under the action of the oxytocin, so as to ensure its reproduction efficiency, and also can avoid its suffering from artificial extrusion and other damages, so as to reduce the postpartum mortality of spawning fish, realize the recycling of spawning fish.

[0023] In the description of the utility model, it is necessary to explain that, unless there is definite stipulation and limitation, the terms "mount", "connect", "connect" should be understood broadly, for example, can be fixed connection, also can be detachable connection, or integrally connected, can be mechanical connection, also can be electrical connection, can be directly connected, also can be indirectly connected through the intermediate medium, can be the communication of two elements inside. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0024] The device embodiments described above are only schematic, wherein the units illustrated as separate components can or can not be physically separate, and the components illustrated as units can or can not be physical units, i.e., can be located in one place, or can be distributed on a plurality of network units. Some or all of the modules can be selected according to actual needs to achieve the purpose of the embodiment. Those skilled in the art can understand and implement without creative labor.

[0025] Finally, it should be noted that: the above examples are only used to illustrate the technical solutions of the utility model, but not to limit them, even though the utility model has been described in detail with reference to the foregoing examples, those skilled in the art should understand that: it can still modify the technical solutions recorded in the foregoing examples, or make equivalent replacement for some technical features, and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the utility model.

Claims

1. A breeding net cage for Oncorhynchus rhodurus, comprising a support frame (1), a first soft pad (2), a separation net (3), a pebble layer (4), an egg collecting net (5), an egg collecting valve (6), a turnover cover (10), a second soft pad (11), a lock buckle (12), a light-transmitting window (15), a connecting rope (16) and a towing ring (17), characterized in that: The inner top end of the support frame (1) is provided with a first soft pad (2), the bottom of the first soft pad (2) is provided with an isolation net (3), the top of the isolation net (3) is paved with a cobblestone layer (4), the bottom of the isolation net (3) is provided with an egg collecting net (5), one side of the top of the support frame (1) is rotationally connected with a turnover cover (10), the turnover cover (10) is provided with top reinforcing ribs (13), the top reinforcing ribs (13) are fixed with a window frame (14), the window frame (14) is installed with a light-transmitting window (15), the outer top of the support frame (1) is symmetrically provided with a connecting rope (16), one end of the connecting rope (16) is fixed on a towing ring (17).

2. The breeding cage for the Amur cisco of claim 1, wherein: The bottom of the egg collecting net (5) is provided with an egg collecting valve (6).

3. The breeding cage for the Amur cisco of claim 1, wherein: The first soft pad (2) is attached to the transverse reinforcing ribs (7), and the transverse reinforcing ribs (7) are uniformly welded on the support frame (1).

4. The breeding cage for the Amur cisco of claim 3, wherein: The transverse reinforcing ribs (7) are welded with vertical reinforcing ribs (8), and the top end of the vertical reinforcing ribs (8) is welded on the support frame (1).

5. The breeding cage for the Amur cisco of claim 1, wherein: The other side of the top of the support frame (1) is provided with a lock opening (9).

6. The breeding cage for the Amur cisco of claim 1, wherein: The inner wall of the turnover cover (10) is provided with a second soft pad (11).

7. The breeding cage for the Amur cisco of claim 6, wherein: The turnover cover (10) is provided with a lock buckle (12). The inner wall of the turnover cover (10) is provided with a second soft pad (11). The turnover cover (10) is provided with a lock buckle (12).

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