CN110710481B - Method for selecting seeds of palaemon carinicauda with low oxygen resistance - Google Patents
Method for selecting seeds of palaemon carinicauda with low oxygen resistance Download PDFInfo
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- CN110710481B CN110710481B CN201911220621.XA CN201911220621A CN110710481B CN 110710481 B CN110710481 B CN 110710481B CN 201911220621 A CN201911220621 A CN 201911220621A CN 110710481 B CN110710481 B CN 110710481B
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- 241000851180 Palaemon carinicauda Species 0.000 title claims abstract description 33
- 229910052760 oxygen Inorganic materials 0.000 title claims abstract description 31
- 239000001301 oxygen Substances 0.000 title claims abstract description 31
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 title claims abstract description 28
- 238000000034 method Methods 0.000 title claims abstract description 18
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 186
- 241000238557 Decapoda Species 0.000 claims abstract description 101
- 206010021143 Hypoxia Diseases 0.000 claims abstract description 21
- 230000007954 hypoxia Effects 0.000 claims abstract description 21
- 238000009395 breeding Methods 0.000 claims abstract description 14
- 230000001488 breeding effect Effects 0.000 claims abstract description 12
- 238000000354 decomposition reaction Methods 0.000 claims abstract description 4
- 230000033001 locomotion Effects 0.000 claims description 5
- 241000195493 Cryptophyta Species 0.000 claims description 4
- 208000014674 injury Diseases 0.000 claims description 3
- 238000005086 pumping Methods 0.000 claims description 3
- 239000000523 sample Substances 0.000 claims description 3
- 230000008733 trauma Effects 0.000 claims description 3
- 238000012216 screening Methods 0.000 description 9
- 230000000694 effects Effects 0.000 description 8
- 238000010187 selection method Methods 0.000 description 7
- 230000001174 ascending effect Effects 0.000 description 4
- 238000001125 extrusion Methods 0.000 description 2
- 238000006213 oxygenation reaction Methods 0.000 description 2
- 239000003643 water by type Substances 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009342 intercropping Methods 0.000 description 1
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01K—ANIMAL HUSBANDRY; AVICULTURE; APICULTURE; PISCICULTURE; FISHING; REARING OR BREEDING ANIMALS, NOT OTHERWISE PROVIDED FOR; NEW BREEDS OF ANIMALS
- A01K61/00—Culture of aquatic animals
- A01K61/50—Culture of aquatic animals of shellfish
- A01K61/59—Culture of aquatic animals of shellfish of crustaceans, e.g. lobsters or shrimps
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01K—ANIMAL HUSBANDRY; AVICULTURE; APICULTURE; PISCICULTURE; FISHING; REARING OR BREEDING ANIMALS, NOT OTHERWISE PROVIDED FOR; NEW BREEDS OF ANIMALS
- A01K63/00—Receptacles for live fish, e.g. aquaria; Terraria
- A01K63/003—Aquaria; Terraria
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01K—ANIMAL HUSBANDRY; AVICULTURE; APICULTURE; PISCICULTURE; FISHING; REARING OR BREEDING ANIMALS, NOT OTHERWISE PROVIDED FOR; NEW BREEDS OF ANIMALS
- A01K63/00—Receptacles for live fish, e.g. aquaria; Terraria
- A01K63/04—Arrangements for treating water specially adapted to receptacles for live fish
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01K—ANIMAL HUSBANDRY; AVICULTURE; APICULTURE; PISCICULTURE; FISHING; REARING OR BREEDING ANIMALS, NOT OTHERWISE PROVIDED FOR; NEW BREEDS OF ANIMALS
- A01K63/00—Receptacles for live fish, e.g. aquaria; Terraria
- A01K63/04—Arrangements for treating water specially adapted to receptacles for live fish
- A01K63/047—Liquid pumps for aquaria
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A40/00—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production
- Y02A40/80—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production in fisheries management
- Y02A40/81—Aquaculture, e.g. of fish
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- Life Sciences & Earth Sciences (AREA)
- Environmental Sciences (AREA)
- Marine Sciences & Fisheries (AREA)
- Animal Husbandry (AREA)
- Biodiversity & Conservation Biology (AREA)
- Zoology (AREA)
- Farming Of Fish And Shellfish (AREA)
Abstract
The invention relates to a method for selecting low-oxygen-resistance seeds of exopalaemon carinicauda, which comprises the following steps: selecting live adult shrimps; constructing a water body with dissolved oxygen of not less than 4ppm, wherein the water body is isolated from the atmosphere, and the adult shrimps are placed in the water body; when the dissolved oxygen amount is reduced and the shrimp dead bodies appear in the water body, the dead bodies are selected from the water body, so that the water quality is prevented from being polluted by the decomposition of the dead bodies; when the number of the living bodies of the grown shrimps is reduced to 10% of the initial input amount, the remaining living bodies of the grown shrimps in the water body are collected. The method can screen the adult shrimps with better hypoxia resistance, and is convenient for subsequent breeding.
Description
Technical Field
The invention relates to the technical field of palaemon carinicauda breeding, in particular to a method for low-oxygen-resistance breeding of palaemon carinicauda.
Background
The existing exopalaemon carinicauda has poor hypoxia resistance, and in large-scale culture operation involving multiple steps of breeding, seed selection and the like, exopalaemon carinicauda often dies in a large area due to hypoxia, so that the large-scale culture of the exopalaemon carinicauda is limited.
Disclosure of Invention
The invention aims to solve the technical problems and provides a method for selecting the low-oxygen-resistance variety of the exopalaemon carinicauda, which is realized by the following technical scheme:
a method for selecting seeds of palaemon carinicauda with hypoxia resistance comprises the following steps:
1) selecting live adult shrimps;
2) constructing a water body with dissolved oxygen not less than 4ppm, wherein the water body is isolated from the atmosphere, and the adult shrimps are placed in the water body;
3) when the dissolved oxygen amount is reduced and the shrimp dead bodies appear in the water body, the dead bodies are selected from the water body, so that the water quality is prevented from being polluted by the decomposition of the dead bodies;
4) and when the number of the living bodies of the grown shrimps is reduced to 8-12% of the initial input amount, collecting the remaining living bodies of the grown shrimps in the water body.
The living adult shrimps continuously consume oxygen in the closed water body, so that the dissolved oxygen of the water body is gradually reduced, and the living adult shrimps finally obtained in the step 4) have higher whole hypoxia resistance compared with the existing adult shrimps, namely, the method can screen the existing adult shrimps with better hypoxia resistance, and is convenient for subsequent breeding.
The method for selecting the seeds of the exopalaemon carinicauda with the hypoxia resistance is further designed to further comprise the following step 5): breeding and breeding the living adult shrimps obtained in the step 4) to form second-generation living adult shrimps, repeating the steps 1) -4) for three times, collecting the remaining second-generation living adult shrimps, and carrying out interspecific screening.
And after repeated interpersonal screening, the obtained palaemon carinicauda can be stably inherited in the hypoxia-resistant characteristic.
The hypoxia-resistant breeding method for the exopalaemon carinicauda is further designed in that adult shrimps with robust shrimp bodies, no defect of appendages, no trauma, active movement and the weight of 2-2.5 g of a single shrimp body are selected as the adult shrimps in the step 1); the water body needs to be free of harmful organisms and algae in the water. To ensure that the death factor for adult shrimp is hypoxia only, thereby ensuring the directionality of the screening.
The method for selecting the seeds of the exopalaemon carinicauda with the hypoxia resistance is further designed in that a device for selecting the seeds of the exopalaemon carinicauda with the hypoxia resistance is adopted in the steps 2) to 4), and the device comprises: the water tank is used for containing a water body, and an empty chamber positioned above the water body is stored in the water tank; the dead shrimp collecting part is arranged in the water tank and is used for collecting adult shrimp dead bodies appearing in the water body; the lifting part is connected with the dead shrimp collecting part and used for driving the dead shrimp collecting part to move between the water body and the empty chamber so as to take the dead shrimps in the water body away from the water body; the dead shrimp storage box is arranged in the empty chamber and used for receiving dead shrimp collection parts and dead bodies of the grown shrimps collected from the water body.
The low-oxygen-resistance seed selection method for the exopalaemon carinicauda is further designed in that a dissolved oxygen measuring probe is arranged in the water tank. The device is used for detecting the dissolved oxygen in the water tank and preventing the dissolved oxygen in the water body from not meeting the operation requirement; particularly, the problem that the dissolved oxygen degree is reduced abnormally or not reduced due to the fact that external atmosphere continuously supplies oxygen to the water body because the water tank is not tightly sealed can be avoided.
The low-oxygen-resistance seed selection method for the exopalaemon carinicauda is further designed in that the dead shrimp collecting part is provided with a connecting block, a collecting hopper with an upward opening is arranged at the upper part of the connecting block, one side wall of the collecting hopper is a movable side wall, the bottom of the movable side wall is hinged with the connecting block, a torsional spring is arranged at the hinged part, and the torsion of the torsional spring enables the movable side wall to be abutted against the edge of the adjacent side wall of the collecting hopper; the inner side of the upper wall of the water tank is provided with a limiting ejector rod opposite to the movable side wall, and when the dead shrimp collecting part moves upwards to the upper part of the water body and continues to move upwards, the movable side wall is abutted against the limiting ejector rod and overturned downwards, so that dead shrimps in the collecting hopper slide out of the collecting hopper from the inner wall of the movable side wall.
The collecting hopper inevitably shakes during ascending, and the living shrimps can be separated from the collecting hopper on the ascending way of the collecting hopper, so that only dead shrimps are left in the collecting hopper.
The low-oxygen-resistance seed selection method for the exopalaemon carinicauda is further designed in that the middle of the connecting block protrudes upwards to form a protruding part, two fixed side wall plates are symmetrically arranged on two longitudinal side walls of the protruding part, two movable side walls are symmetrically arranged on two transverse sides of the fixed side wall plates, and therefore two collecting hoppers which are symmetrically arranged are formed on the upper portion of the connecting block.
The low-oxygen-resistance seed selection method for the exopalaemon carinicauda is further designed in that the lifting part comprises a lead screw, a guide rod and a motor, the lead screw is rotatably and vertically arranged in the middle of the water tank, and the upper end of the lead screw extends out of the upper side wall of the water tank and is connected with the motor; the guide rod is vertically arranged on one side of the screw rod; the middle part of the connecting block is provided with a screw hole and a guide hole and is connected with the screw rod and the guide rod through the screw hole and the guide hole.
When the screw rod rotates, the connecting block and the collecting hopper can be driven to complete the upward or downward reciprocating motion.
The low-oxygen-resistance seed selection method for the exopalaemon carinicauda is further designed to further comprise a water body internal circulation driving mechanism, wherein the water body internal circulation driving mechanism is provided with a water inlet end for pumping water from a water body and a water outlet end for draining water into the water body, so that a circulating flow is formed in the water body; the movable side wall or the fixed side wall plate of the collecting hopper is provided with a through hole, and the circulating flow flows through the through hole, so that the dead shrimps in the water body are brought into the collecting hopper.
The low-oxygen-resistance seed selection method for the exopalaemon carinicauda is further characterized in that the water body internal circulation driving mechanism comprises a water pump, the center of the bottom wall of the water tank is downwards sunken to form a collecting tank, when the connecting block is sunk into the collecting tank, the movable side wall is attached to the inner side of the collecting tank, a through hole is formed in the movable side wall, and the collecting tank is connected with the water inlet end of the water pump through a pipeline; the water outlet end of the water pump is connected with the upper part of the water body.
Of course, in order to avoid living shrimp to stop in the collecting vat to lead to the connecting block to descend to reset and be the extrusion living shrimp, near the collecting vat waters can form local highlight environment or set up the vibration source outside the collecting vat through setting up the light source, makes the living body become the shrimp and keep away from the collecting vat under the effect of highlight or noise.
The low-oxygen-resistance seed selection method for the exopalaemon carinicauda is further designed in that the water pump comprises a piston cylinder, a piston plate, a telescopic bag, a connecting rod piece, a water pump motor and two one-way valves; the piston cylinder is arranged outside the water tank, and the piston plate is arranged in the piston cylinder in a reciprocating sliding manner; the telescopic bag is arranged in the piston cylinder, one end of the telescopic bag is fixedly connected with one end of the piston cylinder, and the other end of the telescopic bag is fixedly connected with the piston plate; the piston plate is connected with the water pump motor through the connecting rod piece to form a crank slider mechanism; the telescopic bag is fixedly connected to one end of the piston cylinder and is respectively connected with the collecting tank and the upper part of the water body through a water inlet pipe and a water outlet pipe; the two one-way valves are respectively connected in the water inlet pipe and the water outlet pipe.
The water pump structure ensures that the circulating flow of the water body can not contact with the atmosphere outside the water tank at all, and ensures that the water body in the water tank can not have any oxygenation effect in the operation process.
Drawings
Fig. 1 is a schematic structural view of a low-oxygen-resistant seed selection device for exopalaemon carinicauda adopted by the invention.
FIG. 2 is a schematic view showing the structure of a dead shrimp collecting section and a collecting tank.
Fig. 3 is a schematic view showing a state where the movable side wall is turned downward when the dead shrimp collecting section ascends above the water body.
Fig. 4 is a schematic diagram of a water pump structure.
Detailed Description
The invention is further illustrated by the following figures and examples in conjunction with the description:
a method for selecting seeds of palaemon carinicauda with hypoxia resistance comprises the following steps:
1) selecting 200 live adult shrimps; selecting adult shrimps with strong shrimp bodies, nondestructive appendages, no trauma and active movement, wherein the weight of a single shrimp body is 2-2.5 g as the adult shrimps; the water body needs to be free of harmful organisms and algae in the water. Ensuring that the death factor of the adult shrimps is only hypoxia, thereby ensuring the directionality of screening;
2) constructing a water body with dissolved oxygen of 4ppm, isolating the water body from the atmosphere, and placing the adult shrimps in the water body; the water body needs to be free of harmful organisms and algae in the water. To ensure that the death factor for adult shrimp is hypoxia only, thereby ensuring the directionality of the screening.
3) When the dissolved oxygen amount is reduced and the shrimp dead bodies appear in the water body, the dead bodies must be selected from the water body immediately, so that the water quality is prevented from being polluted by the decomposition of the dead bodies;
4) and when the number of the living bodies of the grown shrimps is reduced to 10% of the initial input amount, collecting the remaining living bodies of the grown shrimps in the water body.
The living adult shrimps continuously consume oxygen in the closed water body, so that the dissolved oxygen of the water body is gradually reduced, and the living adult shrimps finally obtained in the step 4) have higher whole hypoxia resistance compared with the existing adult shrimps, namely, the method can screen the existing adult shrimps with better hypoxia resistance, and is convenient for subsequent breeding.
Since the screening is performed only once, in order to enhance the screening effect, the present embodiment further includes step 5): breeding and breeding the living adult shrimps obtained in the step 4) to form living adult shrimps, and repeating the steps 1) to 4), collecting the remaining living adult shrimps, and finishing the intercropping screening.
Through multiple interspecific screening, the obtained exopalaemon carinicauda has the characteristic of hypoxia tolerance and can be stably inherited.
Further explaining the embodiment, the step 2) to the step 4) adopt a device for selecting the low-oxygen resistant variety of the palaemon carinicauda, as shown in figure 1, and the device comprises: a water tank 1, containing a water body with dissolved oxygen of 4ppm, and an empty chamber positioned above the water body is stored in the water tank; the dead shrimp collecting part 2 is arranged in the water tank and is used for collecting adult shrimp dead bodies appearing in the water body; the lifting part 3 is connected with the dead shrimp collecting part and used for driving the dead shrimp collecting part to move between the water body and the empty chamber and taking the dead shrimps in the water body away from the water body; the dead shrimp storage box 4 is arranged in the empty chamber and used for receiving the dead shrimp collecting part and the adult shrimp dead bodies collected from the water body.
Specifically, a dissolved oxygen measuring probe 5 is arranged in the water tank and used for detecting the dissolved oxygen in the water tank and preventing the dissolved oxygen in the water body from not meeting the operation requirement; particularly, the problem that the dissolved oxygen degree is reduced abnormally or not reduced due to the fact that external atmosphere continuously supplies oxygen to the water body because the water tank is not tightly sealed can be avoided.
As shown in fig. 2, the dead shrimp collecting part 2 has a connecting block 21, a collecting bucket with an upward opening is arranged at the upper part of the connecting block, one side wall of the collecting bucket is a movable side wall 22, the bottom of the movable side wall is hinged with the connecting block, a torsion spring 23 is arranged at the hinged part, and the torsion force of the torsion spring makes the movable side wall abut against the edge of the adjacent side wall of the collecting bucket; the inboard spacing ejector pin 7 that is provided with relative with the activity lateral wall of water tank upper wall, as shown in fig. 3, when the shrimp collection portion that dies went upward to the water top and continued to go upward, the activity lateral wall supported and overturned downwards with spacing ejector pin for the shrimp that dies that are arranged in the collection fill is collected the fill from the inner wall roll-off of activity lateral wall.
The collecting hopper inevitably shakes during ascending, and the living shrimps can be separated from the collecting hopper on the ascending way of the collecting hopper, so that only dead shrimps are left in the collecting hopper.
The middle part of the connecting block 21 protrudes upwards to form a protruding part, two fixed side wall plates 24 are symmetrically arranged on the two longitudinal side walls of the protruding part, two movable side walls are symmetrically arranged on the two transverse sides of the fixed side wall plates, and two collecting hoppers are symmetrically arranged on the upper part of the connecting block.
The lifting part 3 comprises a screw rod 31, a guide rod 32 and a motor 33, the screw rod is vertically arranged in the middle of the water tank in a rotatable manner, and the upper end of the screw rod extends out of the upper side wall of the water tank and is connected with the motor; the guide rod is vertically arranged on one side of the screw rod; the middle part of the connecting block is provided with a screw hole and a guide hole and is connected with the screw rod and the guide rod through the screw hole and the guide hole.
When the screw rod rotates, the connecting block and the collecting hopper can be driven to complete the upward or downward reciprocating motion.
The embodiment also comprises a water body internal circulation driving mechanism, wherein the water body internal circulation driving mechanism is provided with a water inlet end for pumping water from the water body and a water outlet end for draining water into the water body, so that a circulating flow is formed in the water body; the movable side wall or the fixed side wall plate of the collecting hopper is provided with a through hole, and circulating flow flows through the through hole, so that dead shrimps in the water body are brought into the collecting hopper.
The water body internal circulation driving mechanism comprises a water pump 6, the center of the bottom wall of the water tank is downwards sunken to form a collecting tank 11, when the connecting block sinks into the collecting tank, the movable side wall is attached to the inner side of the collecting tank, the movable side wall is provided with a through hole, and the collecting tank is connected with the water inlet end of the water pump through a pipeline; the water outlet end of the water pump is connected with the upper part of the water body.
Of course, in order to avoid living shrimp to stop in the collecting vat to lead to the connecting block to descend to reset and be the extrusion living shrimp, near the collecting vat waters can form local highlight environment or set up the vibration source outside the collecting vat through setting up the light source, makes the living body become the shrimp and keep away from the collecting vat under the effect of highlight or noise.
The water pump 6 shown in fig. 4 includes a piston cylinder 61, a piston plate 62, a bellows 63, a link member 64, a water pump motor 65, and two check valves 66; the piston cylinder is arranged outside the water tank, and the piston plate is arranged in the piston cylinder in a reciprocating sliding manner; the telescopic bag is arranged in the piston cylinder, one end of the telescopic bag is fixedly connected with one end of the piston cylinder, and the other end of the telescopic bag is fixedly connected with the piston plate; the piston plate is connected with a water pump motor through a connecting rod piece to form a crank-slider mechanism; one end of the telescopic bag fixedly connected with the piston cylinder is respectively connected with the collecting tank and the upper part of the water body through a water inlet pipe 67 and a water outlet pipe 68; the two one-way valves are respectively connected in the water inlet pipe and the water outlet pipe.
The water pump structure ensures that the circulating flow of the water body can not contact with the atmosphere outside the water tank at all, and ensures that the water body in the water tank can not have any oxygenation effect in the operation process.
Claims (5)
1. A method for selecting low-oxygen-resistance seeds of palaemon carinicauda is characterized by comprising the following steps:
1) selecting live adult shrimps;
2) constructing a water body with dissolved oxygen not less than 4ppm, wherein the water body is isolated from the atmosphere, and the adult shrimps are placed in the water body;
3) when the dissolved oxygen amount is reduced and the shrimp dead bodies appear in the water body, the dead bodies are selected from the water body, so that the water quality is prevented from being polluted by the decomposition of the dead bodies;
4) when the number of the living shrimps is reduced to 8% -12% of the initial input amount, collecting the remaining living shrimps in the water body;
step 2) -step 4) adopt a device of nai hypoxia seed selection of palaemon carinicauda, the device includes: the water tank is used for containing a water body, and an empty chamber positioned above the water body is stored in the water tank; the dead shrimp collecting part is arranged in the water tank and is used for collecting adult shrimp dead bodies appearing in the water body; the lifting part is connected with the dead shrimp collecting part and used for driving the dead shrimp collecting part to move between the water body and the empty chamber so as to take the dead shrimps in the water body away from the water body; the dead shrimp storage box is arranged in the empty chamber and used for receiving the adult shrimp dead bodies collected by the dead shrimp collecting part from the water body; the shrimp collecting part is provided with a connecting block, a collecting hopper with an upward opening is arranged at the upper part of the connecting block, one side wall of the collecting hopper is a movable side wall, the bottom of the movable side wall is hinged with the connecting block, a torsional spring is arranged at the hinged part, and the torque force of the torsional spring enables the movable side wall to be abutted against the edge of the adjacent side wall of the collecting hopper; the inner side of the upper wall of the water tank is provided with a limiting ejector rod opposite to the movable side wall, and when the dead shrimp collecting part moves upwards to the upper part of the water body and continues to move upwards, the movable side wall is abutted against the limiting ejector rod and overturned downwards, so that the dead shrimps in the collecting hopper slide out of the collecting hopper from the inner wall of the movable side wall; the lifting part comprises a screw rod, a guide rod and a motor, the screw rod is vertically arranged in the middle of the water tank in a rotatable mode, and the upper end of the screw rod extends out of the upper side wall of the water tank and is connected with the motor; the guide rod is vertically arranged on one side of the screw rod; the middle part of the connecting block is provided with a screw hole and a guide hole and is connected with the screw rod and the guide rod through the screw hole and the guide hole; the device for low-oxygen-resistant seed selection of the exopalaemon carinicauda further comprises a water body internal circulation driving mechanism, wherein the water body internal circulation driving mechanism is provided with a water inlet end for pumping water from a water body and a water outlet end for draining water into the water body, so that a circulating flow is formed in the water body; the movable side wall or the fixed side wall plate of the collecting hopper is provided with a through hole, and the circulating flow flows through the through hole, so that the dead shrimps in the water body are brought into the collecting hopper; the water body internal circulation driving mechanism comprises a water pump, the center of the bottom wall of the water tank is downwards sunken to form a collecting tank, when the connecting block sinks into the collecting tank, the movable side wall is attached to the inner side of the collecting tank, the movable side wall is provided with a through hole, and the collecting tank is connected with the water inlet end of the water pump through a pipeline; the water outlet end of the water pump is connected with the upper part of the water body; the water pump comprises a piston cylinder, a piston plate, a telescopic bag, a connecting rod piece, a water pump motor and two one-way valves; the piston cylinder is arranged outside the water tank, and the piston plate is arranged in the piston cylinder in a reciprocating sliding manner; the telescopic bag is arranged in the piston cylinder, one end of the telescopic bag is fixedly connected with one end of the piston cylinder, and the other end of the telescopic bag is fixedly connected with the piston plate; the piston plate is connected with the water pump motor through the connecting rod piece to form a crank slider mechanism; the telescopic bag is fixedly connected to one end of the piston cylinder and is respectively connected with the collecting tank and the upper part of the water body through a water inlet pipe and a water outlet pipe; the two one-way valves are respectively connected in the water inlet pipe and the water outlet pipe.
2. The method for hypoxia-resistant seed selection for palaemon carinicauda according to claim 1, further comprising the step 5): breeding and breeding the living adult shrimps obtained in the step 4) to form second-generation living adult shrimps, and collecting the second-generation living adult shrimps.
3. The method for selecting the palaemon carinicauda seeds with hypoxia resistance according to claim 1, wherein the adult shrimps with robust shrimp bodies, nondeficient appendages, no trauma, lively movement and the weight of a single shrimp body of 2-2.5 g are selected as the adult shrimps in the step 1); the water body needs to be free of harmful organisms and algae in the water.
4. The method for low oxygen resistance seed selection of palaemon carinicauda as claimed in claim 1, wherein a dissolved oxygen measuring probe is disposed in the water tank.
5. The low oxygen resistance breeding method for exopalaemon carinicauda as claimed in claim 1, wherein the middle part of the connecting block is protruded upwards to form a protrusion, and the two longitudinal side walls of the protrusion are symmetrically provided with two fixed side wall plates, and the two movable side walls are symmetrically arranged at the two transverse sides of the fixed side wall plates, so that two collecting hoppers are symmetrically arranged at the upper part of the connecting block.
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| CN111493002A (en) * | 2020-03-19 | 2020-08-07 | 菏泽学院 | Device for measuring activity and metabolic rate of pelteobagrus vachelli under low oxygen |
| CN114467816B (en) * | 2021-12-03 | 2022-11-08 | 江苏省海洋水产研究所 | Device and method for improving survival rate of parent shrimps of sea fishing penaeus japonicus |
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