CN215123355U

CN215123355U - A simple and convenient device for research of fish density stress

Info

Publication number: CN215123355U
Application number: CN202120248660.7U
Authority: CN
Inventors: 程起群; 段晓晨
Original assignee: East China Sea Fishery Research Institute Chinese Academy of Fishery Sciences
Current assignee: East China Sea Fishery Research Institute Chinese Academy of Fishery Sciences
Priority date: 2021-01-28
Filing date: 2021-01-28
Publication date: 2021-12-14
Anticipated expiration: 2031-01-28

Abstract

The utility model relates to a simple and convenient device for research is threatened to fish density, including breeding the pond, breeding the pond and being cask form, should breed the vertical sewage pipe that is equipped with in pond bottom surface center, sewage pipe and breed and be provided with fixed net fence and activity net fence between the pond, activity net fence round the sewage pipe rotation, should move about net fence upper end one side be equipped with and breed the net fence switch that the pond upper end mouth links to each other. The utility model discloses can change the experimental apparatus of density at any time, the device overall structure is simple, and convenient to use can change the breed density that changes fish through control activity net fence, and the research is coerced to especially adapted fish acute density, is applicable to the research of coerced to fish chronic density simultaneously.

Description

A simple and convenient device for research of fish density stress

Technical Field

The utility model relates to a research equipment technical field is threatened to fish density, especially relates to a simple and convenient device that is used for research is threatened to fish density.

Background

With the ecological civilization construction and the transformation development of fishery in China, the aquaculture industry is undergoing the process of transformation from single yield increasing type to quality improving and efficiency increasing type. In the culture process, culture environment, culture mode and the like are main factors influencing the quality formation of fishes. At present, intensive culture based on feed feeding and high-density stocking is an important mode for fish production in China. High-density culture is an important way for improving the yield of aquaculture and reducing the culture cost, but with the increase of density, the competition of individuals in a population on resources and space is increased, a series of changes of the fishes in aspects of feeding, growth, energy metabolism, behaviors, physiology, immune function and the like can be caused, density stress is caused, the extra energy consumption of the fishes is increased, the possibility of fish diseases is increased, the survival capacity of the fishes can be reduced, and the adverse effect on the water area environment can be caused.

Density stress is a common stress factor in aquaculture and is an important consideration factor of an aquaculture Capacity (shipping Capacity) management system to be implemented in China. The effects of density stress on farmed animals are of increasing concern. Researches find that density stress has different degrees of influence on aspects such as endocrine, growth, metabolism and immunity of fishes, so that behavior change of organisms is caused, even a series of pathological changes occur, the fishes can die, and ecological benefit and economic benefit are directly influenced. Therefore, the research on the influence rule of the density on the fishes and the determination of the proper culture density have important theoretical and practical significance on the management, regulation and control as well as reasonable development and utilization of the fish population.

At present, in fish density stress experiments, bottom drainage and manual salvage are generally used for changing the density. The change of the water level can cause the limited activity range of the fish in the vertical space; the manual fishing not only consumes physical strength, but also can cause damage to the fish body in the process of capturing the fish, thereby influencing the experimental result. Particularly in acute density stress experiments, the two density changing modes are not ideal in effect, so that a new device for fish density stress experiments in the culture pond is urgent.

Disclosure of Invention

The utility model aims to solve the technical problem that a simple and convenient device for research is threatened to fish density is provided, can change the experimental apparatus of density at any time, and the device overall structure is simple, and convenient to use can change the breed density of fish through controlling movable net fence, and the research is threatened to especially adapted fish acute density, is applicable to the research of fish chronic density threatens simultaneously.

The utility model provides a technical scheme that its technical problem adopted is: the utility model provides a simple and convenient device for research is threatened to fish density, including breeding the pond, breeding the pond and be cask form, should breed the vertical blowdown pipe that is equipped with in bottom surface center of the pool, blowdown pipe and breed and be provided with fixed net fence and activity net fence between the pond, activity net fence rotate round the blowdown pipe, this activity net fence upper end one side is equipped with the net fence switch that links to each other with breeding the pond upper end mouth.

As a supplement to the technical scheme of the utility model, the culture pond on the port edge be equipped with the round scale.

As a supplement to the technical proposal of the utility model, the utility model also comprises an oxygenator, one end of the pipeline of the oxygenator is provided with a gas stone, and the gas stone is put into the bottom of the culture pond.

As right technical scheme a supplement, breed pond top be provided with an inlet tube, install the inlet tube switch of adjusting rivers size on this inlet tube.

As right technical scheme a supplement, breed the vertical outlet pipe that is equipped with in the pond outside, the highly unanimous with the blow off pipe of the height of this outlet pipe, the lower extreme of outlet pipe and blow off pipe be linked together.

As a supplement to the technical proposal of the utility model, the height of the sewage draining pipe is consistent with the height of the culture pond.

As a supplement to the technical solution of the present invention, the movable net fence is foldable.

Has the advantages that: the utility model relates to a simple and convenient device for research is threatened to fish density has following several advantages:

1. density stress (including acute stress and chronic stress) can be caused by changing the culture space by adjusting the position of the movable net fence, the operation is simple and rapid, the fish body cannot be damaged, and the method is very suitable for the research of acute density stress experiments;

2. the edge of the upper port of the culture pond is provided with a circle of scales, which is mainly used for accurately controlling the adjusting position of the movable net fence and improving the accuracy of the test;

3. the height of the water outlet pipe is consistent with that of the sewage discharge pipe so as to facilitate the discharge of residual baits and water drainage, and the consistency of the height of the water outlet pipe and the sewage discharge pipe can also ensure that the water surface in the culture pond is kept unchanged;

4. the height of the drain pipe is consistent with the height of the culture pond or slightly lower than the culture pond, so that residual bait is discharged through the drain pipe;

5. the net fence switch is arranged so as to temporarily fix the movable net fence at a certain position when the cultivation density is adjusted.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

The figure is as follows: 1. the device comprises a culture pond, 2, a blow-off pipe, 3, a water outlet pipe, 4, air stones, 5, a movable net fence, 6, a net fence switch, 7, a fixed net fence, 8, a water inlet pipe, 9, a water inlet pipe switch, 10, an oxygenator, 11 and scales.

Detailed Description

The present invention will be further described with reference to the following specific examples. It should be understood that these examples are for illustrative purposes only and are not intended to limit the scope of the present invention. Furthermore, it should be understood that various changes and modifications of the present invention may be made by those skilled in the art after reading the teachings of the present invention, and these equivalents also fall within the scope of the appended claims.

The utility model discloses an embodiment relates to a simple and convenient device for research is threatened to fish density, as shown in fig. 1, including breeding pond 1, breeding pond 1 be cask form, should breed 1 bottom surface center in pond and vertically be equipped with a blow off pipe 2, blow off pipe 2 and breed 1 between be provided with fixed net fence 7 and activity net fence 5, activity net fence 5 rotate round blow off

pipe

2, 5 upper end one sides of this activity net fence are equipped with the net fence switch 6 that links to each other with 1 upper end mouth in pond, set up net fence switch 6 so that be used for temporarily fixing activity net fence 5 in a certain position when adjusting breeding density. The net fence switch 6 is detachably connected with the movable net fence 5.

Breed 1 port edge on the pond be equipped with round scale 11, when needs are adjusted and are bred density, loosen net fence switch 6, only need rotate movable net fence 5 and adjust to the assigned position according to the scale, then lock net fence switch 6 and carry out the rigidity, set up scale 11 mainly for accurate adjusting the position of accuse movable net fence 5, improve experimental accuracy.

The device also comprises an oxygenator 10, wherein one end of a pipeline of the oxygenator 10 is provided with a gas stone 4, and the gas stone 4 is placed at the bottom of the culture pond 1.

The breeding pond is characterized in that a water inlet pipe 8 is arranged above the breeding pond 1, and a water inlet pipe switch 9 for adjusting the water flow is arranged on the water inlet pipe 8.

Breed 1 outside vertical being equipped with a outlet pipe 3, the highly unanimous with the highly of blow off pipe 2 of this outlet pipe 3 to discharge incomplete bait and drainage, the lower extreme of outlet pipe 3 be linked together with the lower extreme of blow off pipe 2, outlet pipe 3 and the highly unanimous water level that can guarantee to breed in the pond 1 of 2 of blow off pipe maintain unchangeably.

The height of the sewage draining pipe 2 is consistent with that of the culture pond 1 or slightly lower than that of the culture pond 1, so that residual baits are drained through the sewage draining pipe 2.

The movable net fence 5 can be folded, the movable net fence 5 is folded from the middle, the symmetrical axis of the movable net fence 5 is fixed along the sewage discharge pipe 2, then one side of the movable net fence 5 abuts against the inner wall of the culture pond 1, but the movable net fence 5 can flexibly rotate.

The utility model provides a test device is threatened to fish density can change the breed space through the position of adjusting movable net fence 5 thereby and cause density to threaten (including acute threaten and chronic threaten), and easy operation is swift, and can not harm the fish body, the research of experiment is threatened to especially adapted acute density.

Claims

1. A simple and convenient device for research of fish density stress, includes breed pond (1), its characterized in that: breed pond (1) be cask form, should breed pond (1) bottom surface center is vertical to be equipped with a blow off pipe (2), blow off pipe (2) and breed and be provided with fixed net fence (7) and activity net fence (5) between pond (1), activity net fence (5) rotate round blow off pipe (2), this activity net fence (5) upper end one side is equipped with and breeds net fence switch (6) that pond (1) upper end links to each other.

2. The simple device for fish density stress research as claimed in claim 1, wherein: the edge of the upper port of the culture pond (1) is provided with a circle of scales (11).

3. The simple device for fish density stress research as claimed in claim 1, wherein: the device is characterized by further comprising an oxygenator (10), wherein one end of a pipeline of the oxygenator (10) is provided with a gas stone (4), and the gas stone (4) is placed at the bottom of the culture pond (1).

4. The simple device for fish density stress research as claimed in claim 1, wherein: a water inlet pipe (8) is arranged above the culture pond (1), and a water inlet pipe switch (9) for adjusting the water flow is arranged on the water inlet pipe (8).

5. The simple device for fish density stress research as claimed in claim 1, wherein: the breeding pond is characterized in that a water outlet pipe (3) is vertically arranged on the outer side of the breeding pond (1), the height of the water outlet pipe (3) is consistent with that of the sewage discharge pipe (2), and the lower end of the water outlet pipe (3) is communicated with the lower end of the sewage discharge pipe (2).

6. The simple device for fish density stress research as claimed in claim 1, wherein: the height of the sewage discharge pipe (2) is consistent with that of the culture pond (1).

7. The simple device for fish density stress research as claimed in claim 1, wherein: the movable net fence (5) can be folded.