CN111387154A - Air blowing type abalone planktonic larva collection method - Google Patents
Air blowing type abalone planktonic larva collection method Download PDFInfo
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- CN111387154A CN111387154A CN202010256960.XA CN202010256960A CN111387154A CN 111387154 A CN111387154 A CN 111387154A CN 202010256960 A CN202010256960 A CN 202010256960A CN 111387154 A CN111387154 A CN 111387154A
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- 238000007664 blowing Methods 0.000 title claims abstract description 65
- 238000000034 method Methods 0.000 title claims abstract description 35
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 42
- 238000009826 distribution Methods 0.000 claims description 12
- 238000007667 floating Methods 0.000 claims description 6
- 238000003825 pressing Methods 0.000 claims description 3
- 230000006378 damage Effects 0.000 abstract description 7
- 201000010099 disease Diseases 0.000 abstract description 5
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 abstract description 5
- 239000002352 surface water Substances 0.000 abstract description 4
- 239000010410 layer Substances 0.000 description 9
- 238000009395 breeding Methods 0.000 description 4
- 230000001488 breeding effect Effects 0.000 description 4
- 239000012535 impurity Substances 0.000 description 4
- 241000237891 Haliotidae Species 0.000 description 2
- 229910001294 Reinforcing steel Inorganic materials 0.000 description 2
- 241000973497 Siphonognathus argyrophanes Species 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 235000014102 seafood Nutrition 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- 230000004083 survival effect Effects 0.000 description 2
- 241001489141 Haliotis iris Species 0.000 description 1
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 239000011449 brick Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 235000013305 food Nutrition 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 230000001418 larval effect Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000000050 nutritive effect Effects 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
- 239000002344 surface layer Substances 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
- A01K80/00—Harvesting oysters, mussels, sponges or the like
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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
- A01K61/51—Culture of aquatic animals of shellfish of gastropods, e.g. abalones or turban snails
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- 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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Abstract
The invention discloses an air blowing type abalone planktonic larva collector and a method for collecting abalone planktonic larvae, wherein the collector comprises a bracket, and an air blowing device and a collecting device which are respectively arranged on the bracket; the bracket comprises a first bottom rod, a second bottom rod and a third bottom rod; the blowing frame comprises an air inlet pipe frame and a plurality of air outlet pipe frames; the collecting device is a rectangular frame wrapped by a bolting-silk net, and one side of the collecting device is provided with an opening end. The method comprises the following steps: placing the air blowing type abalone planktonic larva collector in an abalone planktonic larva pool; the open end of the collecting device is opposite to the air outlet pipe of the blowing device, and the upper half part of the collecting device is exposed out of the water surface. Air is introduced into an air inlet pipe of the air blowing device, so that the air is blown to the surface of the water layer through the air blowing device, the surface water flows into the net cage by means of surface air flow, and the abalone planktonic larvae enter the net cage. The method has low damage rate to the abalone planktonic larvae, reduces the occurrence of diseases, has simple operation and saves manpower.
Description
Technical Field
The invention relates to the technical field of abalone culture, in particular to an air blowing type abalone planktonic larva collection method.
Background
Abalone is a rare seafood, has high nutritive value and medicinal value, and is known as "eight delicacies of seafood". In the 80 and 90 s of the 20 th century, products mainly exported to Japan, hong Kong and the like, and the continental market is very small due to low yield and high price. In the early century, with the improvement of the living standard of people, the abalone gradually enters common people and becomes a delicious food on the dining table of common people. Therefore, the demand of abalone is increasing, however, the abalone for collection and supplement cannot meet the demand at all, and therefore, the abalone breeding industry is developing rapidly. Through the development of 20-30 years, the artificial breeding and cultivating technology of the abalones is improved to a certain extent, but the collection of the abalone planktonic larvae (the trochophore stage-the initial stage of the face plate larvae) always adopts the traditional trawl or siphon method, the method is easy to cause larva damage and diseases, and the manual labor intensity is high. Therefore, a collection method which is low in damage rate of abalone planktonic larvae, low in labor intensity and simple and convenient to operate is urgently needed in abalone fry breeding production, so that the survival rate and the fry adhering amount of the abalone planktonic larvae are improved.
Disclosure of Invention
Aiming at the prior art, the invention aims to provide a method for collecting air blowing type abalone planktonic larvae. The invention provides a method which is simple to operate, can reduce the damage rate of abalone planktonic larvae, reduces the occurrence of diseases and improves the quality of the abalone planktonic larvae.
In order to achieve the purpose, the invention adopts the following technical scheme:
the invention provides an air blowing type abalone planktonic larva collector, which comprises a bracket, and an air blowing device and a collecting device which are respectively arranged on the bracket; the bracket comprises a first bottom rod, a second bottom rod and a third bottom rod, wherein the tail end of the first bottom rod is connected with the tail end of the second bottom rod and the tail end of the third bottom rod;
the top end of the first bottom rod is provided with an air blowing frame, the air blowing frame comprises an air inlet pipe frame and a plurality of air outlet pipe frames, and the tail ends of the air inlet pipe frames are connected with the tail ends of the air outlet pipe frames; the air blowing device comprises an air inlet pipe and an air outlet pipe, the air inlet pipe is connected with the two gas distribution pipes, the air outlet pipe is communicated with the gas distribution pipes, and the tail end of the air outlet pipe is provided with an air outlet; the air inlet pipe is fixed on the air inlet pipe frames, and the air outlet pipes are respectively fixed on the air outlet pipe frames;
a first collecting frame is arranged at the top end of the second bottom rod, and a second collecting frame is arranged at the top end of the third bottom rod; the first collecting rack comprises a first supporting frame and two first parallel rods; the second collecting frame comprises a second supporting frame and two second parallel rods; the first supporting frame and the second supporting frame are both vertical to the plane where the second bottom rod and the third bottom rod are located; the main body of the collecting device is a rectangular frame, one side of the rectangular frame is provided with an opening end, and the rest side is wrapped with a bolting silk net; the collecting device is fixed on the first collecting rack and the second collecting rack; the width of the blowing device is smaller than that of the opening end of the collecting device.
Preferably, the first bottom rod, the second bottom rod, the third bottom rod, the first support frame, the second support frame, the air inlet pipe frame and the air outlet pipe frame are telescopic rods with adjustable lengths. The length of adjusting first sill bar, second sill bar and third sill bar can realize the regulation of the distance between collection device and the gas blowing device. The height of the collecting device can be adjusted by adjusting the lengths of the first support frame and the second support frame. The distance between the inlet pipe support and the outlet pipe support can be adjusted by adjusting the length of the inlet pipe support and the outlet pipe support, so that the angle between the outlet pipe and the water surface can be changed.
Preferably, the air inlet pipe frame and the air outlet pipe frame are both provided with a clip capable of clamping. The clip can fix the air inlet pipe and the air outlet pipe.
Preferably, sliding grooves are formed in the contact ends of the first parallel rod and the first supporting frame and the contact ends of the second parallel rod and the second supporting frame. The first support frame and the second support frame are T-shaped. The first parallel bars move in the slide grooves of the first support frame, and the distance between the first parallel bars can be adjusted, and the distance is determined according to the width of the collecting device. The first parallel rods can firmly fix the collecting device by screwing bolts or moving fixing blocks to fix the distance between the first parallel rods.
Preferably, the diameter of the air outlet is smaller than that of the air outlet pipe. Thus being beneficial to the air current to flow and being capable of more effectively blowing the abalone planktonic larvae.
In a second aspect of the invention there is provided the use of an air-blown abalone-planktonic larvae collector in the collection of abalone-planktonic larvae.
In a third aspect of the invention there is provided a method of collecting floating larvae of paua abalone, the method comprising the steps of:
(1) placing the air blowing type abalone planktonic larva collector in an abalone planktonic larva pool, and pressing sterilized heavy objects on the second bottom rod and the third bottom rod to fix the collector in water; adjusting the height of the blowing frame to horizontally fix the gas distribution pipe of the blowing device at a height of 2cm away from the water surface, and enabling the gas outlet to be lower than 2cm away from the water surface; placing the collecting device on a first collecting rack and a second collecting rack, and adjusting the lengths of the air blowing rack and the collecting rack to enable the open end of the collecting device to face an air outlet pipe of the air blowing device and enable the upper half part of the collecting device to be exposed out of the water surface;
(2) air is introduced into an air inlet pipe of the air blowing device, so that the air is blown to the surface of the water layer through the air blowing device, the floating larvae move into the net cage by means of surface air flow, and after 15-20 min, the collecting device is taken down, and the abalone floating larvae in the collecting device are taken out.
Preferably, the angle formed by the air outlet pipe of the air blowing device and the horizontal plane is 1-2 degrees. Since the gas distribution pipe is horizontally fixed at a height of 2cm from the water surface, if the angle formed by the gas outlet pipe and the horizontal plane is too large, the gas outlet of the gas outlet pipe may be inserted into the water. This angle divides the airflow into two directions: forwards and downwards, the air outlet pipe can ensure that the air flow blown out by the air outlet pipe can blow the surface water as much as possible and can not blow impurities on the bottom layer of the water surface or unhealthy abalone larvae onto the water surface from the water.
Preferably, the air in the outlet duct blows the water in the abalone larva breeding pond to flow to a direction to rivers drive the removal of abalone larva, and the velocity of flow of outlet duct single tube mouth of pipe air is 24 ~ 36L/min.
Preferably, the distance between the air outlet and the opening end of the collecting device is 0.8-1.2 m. The angle that outlet duct and horizontal plane formed and the velocity of flow of outlet duct single tube mouth of pipe air have decided collection device's collection scope, have decided promptly that the air current can blow in into collection device with what within a certain distance the abalone larva and can not blow up impurity under the surface of water.
The invention has the beneficial effects that:
1. the damage rate of the abalone planktonic larvae is reduced, the mechanical damage to the larvae caused by trawling with a bolting-silk net and siphoning when the planktonic larvae are collected conventionally is overcome, and the quality and the survival rate of the seedlings are improved.
2. The pollution rate of collected larvae is reduced, the collected larvae are cleaner, the frequent stirring of the water body where the floating larvae are located by a conventional collection method is overcome, and the probability that the debris on the lower layer of the water body and the inferior larvae are collected is reduced. Meanwhile, the method can ensure that only the surface water is pushed to flow by blowing, thereby improving the collection rate of the high-quality healthy larvae on the upper layer.
3. The incidence of diseases is reduced, the defect that residual corpses and scraps at the bottom of the pool are easy to collect by a conventional planktonic larva collection method is overcome, and the influence of pollutants on healthy larvae is reduced.
4. The operation is simple, and the labor is saved.
Drawings
FIG. 1: a structure diagram of an air blowing type abalone planktonic larva collector;
FIG. 2: the structure of the bracket;
FIG. 3: the structure of the blowing device;
FIG. 4: a configuration of the collecting device;
wherein: 1. the blowing device comprises a blowing device, 2, a collecting device, 3, a bracket, 11, an air inlet pipe, 12, an air distribution pipe, 13, an air outlet pipe, 21, an opening end, 311, a first bottom rod, 312, a second bottom rod, 313, a third bottom rod, 32, a blowing frame, 33, a first collecting frame, 34, a second collecting frame, 35, an air inlet pipe frame, 36, an air outlet pipe frame, 37, a clamp, 331, a first supporting frame, 332, a first parallel rod, 341, a second supporting frame and 342, a second parallel rod.
Detailed Description
It should be noted that the following detailed description is exemplary and is intended to provide further explanation of the disclosure. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.
As introduced in the background section, abalone is a relatively delicate and delicate marine product that is difficult to breed. The traditional trawl or siphon method is adopted for abalone planktonic larva collection, and the problems of larva injury, high deformity rate, easy disease occurrence and the like are easily caused by the traditional trawl or siphon method, and the labor intensity of workers is high. Based on the method, the invention provides a blowing-type abalone planktonic larvae collection method, which needs to use a blowing-type abalone planktonic larvae collector to complete the collection of the abalone planktonic larvae. The method is suitable for collecting abalone in the trochophore and initial washbasin larval stages.
As shown in fig. 1-4, the collector comprises a bracket 3, and an air blowing device 1 and a collecting device 2 which are respectively arranged on the bracket 3; the bracket 3 comprises a first bottom rod 311, a second bottom rod 312 and a third bottom rod 313, and the ends of the first bottom rod 311, the second bottom rod 312 and the third bottom rod 313 are connected together;
the top end of the first bottom rod 311 is provided with an air blowing frame 32, the air blowing frame 32 comprises an air inlet pipe frame 35 and a plurality of air outlet pipe frames 36, and the tail ends of the air inlet pipe frame 35 and the tail ends of the air outlet pipe frames 36 are connected together; the air blowing device 1 comprises an air inlet pipe 11 and an air outlet pipe 13, the air inlet pipe 11 is connected with two air distribution pipes 12, the air outlet pipe 13 is communicated with the air distribution pipes 12, and the tail end of the air outlet pipe 13 is provided with an air outlet; the air inlet pipe 11 is fixed on the air inlet pipe support 35, and the air outlet pipes 13 are respectively fixed on a plurality of air outlet pipe supports 36;
a first collecting rack 33 is arranged at the top end of the second bottom rod 312, and a second collecting rack 34 is arranged at the top end of the third bottom rod 313; the first collecting frame 33 includes a first supporting frame 331 and two first parallel bars 332; the second collecting rack 34 includes a second supporting rack 341 and two second parallel rods 342; the first supporting frame 331 and the second supporting frame 341 are both perpendicular to the plane of the second bottom bar 312 and the third bottom bar 313; the main body of the collecting device 2 is a rectangular frame, one side of the rectangular frame is provided with an opening end 21, and the rest side is wrapped with a bolting silk net; the collecting device 2 is fixed on a first collecting rack 33 and a second collecting rack 34; the width of the blowing device 1 is smaller than the width of the opening end 21 of the collecting device 2. Wherein, the width of the air blowing device 1 is the distance between the air outlet pipes 13 connected with the tail ends of the two air branch pipes 12.
The abalone planktonic larvae in the planktonic larvae pool can flow into the net cage along the directions of air flow and water flow by adopting the device, and after 15-20 minutes, the collecting device is taken out of the water, and the larvae in the collecting device are taken out. By repeating the collection several times, about 85% of the healthy abalone planktonic larvae were collected. The air-blowing device air-distributing pipe is horizontally fixed at a height of 2cm from the water surface, and the air-outlet pipe is slightly obliquely arranged by adjusting the angle formed by the air-outlet pipe and the water surface, so that the blown air flow is divided into two directions of being parallel to the water surface forwards and being vertical to the water surface downwards. Because the angle is very small, the air current can only blow the water on the surface layer of the water surface and can not blow impurities under the water. The planktonic larvae screened by the method disclosed by the invention are relatively high in quality, the frequent stirring of a water body in which the planktonic larvae are located by a conventional collection method is overcome, the probability that the debris and the inferior larvae on the lower layer of the water body are collected is reduced, and only the flow of surface water is pushed by blowing air, so that only the high-quality healthy larvae on the upper layer of the water body are collected; the seedling adhering rate in the following production process is improved by more than 10 percent compared with the seedling adhering rate of the traditional operation, and the method can be popularized in a large range.
In order to make the technical solutions of the present application more clearly understood by those skilled in the art, the technical solutions of the present application will be described in detail below with reference to specific embodiments.
The test materials used in the examples of the present invention are all conventional in the art and commercially available.
Examples
(1) The blowing device comprises: the air inlet pipe, the air distribution pipe and the air outlet pipe are all made of PPR; diameter of the air inlet pipe: 2.5cm, diameter of the gas-distributing pipe: 2.5cm, length: 49 cm; diameter of the air outlet pipe: 1.5cm, length: 40 cm.
(2) A collecting device: the length, width and height are respectively 100cm, 100cm and 60cm, the length of the opening surface is 100cm and the width is 60cm, the other 5 surfaces are all wrapped by a 260-mesh bolting silk net, the frame is composed of reinforcing steel bars, and the diameter of the reinforcing steel bars is 1.2 cm.
(3) The blowing device is pressed on the blowing frame, the blowing device is fixed by a clamp, and the collecting device is pressed on the first collecting frame and the second collecting frame. The length of the first bottom rod, the second bottom rod and the third bottom rod is adjusted to enable the distance between the air outlet and the opening end of the collecting device to be 1 m. The lengths of the inlet pipe frame and the outlet pipe frame are adjusted to enable the included angle formed by the outlet pipe and the water surface to be 2 degrees. Adjusting the distance between the first parallel rods and the distance between the second parallel rods according to the width of the collecting device, clamping the collecting device between the first parallel rods and the second parallel rods, and screwing the bolts to fix the positions of the first parallel rods and the second parallel rods.
(4) Placing the air blowing type abalone planktonic larva collector in an abalone planktonic larva pool in a trochar larva stage or a washbasin larva initial stage, and pressing the abalone planktonic larva collector on the second bottom rod and the third bottom rod by using sterilized square bricks to enable the collector to be fixed in water; the height of the first bottom rod is adjusted, so that the gas distribution pipe of the blowing device is horizontally fixed at a height of 2cm from the water surface. The included angle between the air outlet pipe and the water surface is 2 degrees; and placing the collecting device on the first collecting rack and the second collecting rack, and adjusting the lengths of the air blowing rack and the collecting rack to enable the opening of the collecting device to face the air outlet pipe of the air blowing device, wherein the upper half part of the collecting device is exposed out of the water surface. The distance between the air outlet and the opening end of the collecting device is 1 m. When the surface of water is calm, after the bottom impurity all sinks, let in the air to gas blowing device's intake pipe, make the air blow to the water layer surface through gas blowing device, make top layer water and abalone planktonic larva flow in the box with a net with the help of the top layer air current, after 15min, take off collection device, take out the planktonic larva in the collection device. The collection was repeated five times, and about 85% of the healthy abalone planktonic larvae were collected.
The method of the invention and the traditional collection method are used for collecting abalone planktonic larvae in culture ponds with the length, width and height of 4m 1.2m respectively, 5 groups of 100 planktonic larvae in each group are randomly selected from the collected abalone larvae respectively, the planktonic larvae are subjected to microscopic examination, the number of healthy larvae is counted, and the average specific gravity of the healthy larvae is calculated. The collected abalone planktonic larvae were then subsequently cultured and the spat attachment rate (average) was counted, the results are shown in table 1.
TABLE 1
As can be seen from table 1, the healthy abalone larvae collected by the method of the present invention accounted for nearly 96% of the total amount collected, which was much higher than that collected by trawl or siphon methods. In the subsequent cultivation, the seedling adhering rate of the abalone fries collected by the method is about 90 percent and is higher than that of the traditional method. Therefore, the method for collecting the abalones in the trochophore stage and the initial washbasin larva stage has good application prospect.
The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.
Claims (10)
1. An air blowing type abalone planktonic larva collector is characterized by comprising a support, and an air blowing device and a collecting device which are respectively arranged on the support; the bracket comprises a first bottom rod, a second bottom rod and a third bottom rod, wherein the tail end of the first bottom rod is connected with the tail end of the second bottom rod and the tail end of the third bottom rod;
the top end of the first bottom rod is provided with an air blowing frame, the air blowing frame comprises an air inlet pipe frame and a plurality of air outlet pipe frames, and the tail ends of the air inlet pipe frames are connected with the tail ends of the air outlet pipe frames; the air blowing device comprises an air inlet pipe and an air outlet pipe, the air inlet pipe is connected with the two gas distribution pipes, the air outlet pipe is communicated with the gas distribution pipes, and the tail end of the air outlet pipe is provided with an air outlet; the air inlet pipe is fixed on the air inlet pipe frames, and the air outlet pipes are respectively fixed on the air outlet pipe frames;
a first collecting frame is arranged at the top end of the second bottom rod, and a second collecting frame is arranged at the top end of the third bottom rod; the first collecting rack comprises a first supporting frame and two first parallel rods; the second collecting frame comprises a second supporting frame and two second parallel rods; the first supporting frame and the second supporting frame are both vertical to the plane where the second bottom rod and the third bottom rod are located; the main body of the collecting device is a rectangular frame, one side of the rectangular frame is provided with an opening end, and the rest side is wrapped with a bolting silk net; the collecting device is fixed on the first collecting rack and the second collecting rack; the width of the blowing device is smaller than that of the opening end of the collecting device.
2. The collector of claim 1 wherein the first bottom bar, the second bottom bar, the third bottom bar, the first support frame, the second support frame, the inlet manifold frame and the outlet manifold frame are telescopic bars with adjustable lengths.
3. The collector of claim 1 wherein the inlet manifold carrier and the outlet manifold carrier are each provided with a clip that can be clipped.
4. The collector of claim 1 wherein the contact end of the first parallel bar and the first support frame and the contact end of the second parallel bar and the second support frame are provided with sliding grooves.
5. The collector of claim 1 wherein the outlet opening has a diameter less than the diameter of the outlet tube.
6. Use of a collector according to any one of claims 1 to 5 in the collection of planktonic larvae of abalone.
7. A method for collecting air-blowing abalone planktonic larvae, which is characterized by comprising the following steps:
(1) placing the air-blown abalone planktonic larvae collector of any one of claims 1-5 in a pond of abalone planktonic larvae, pressing sterile weights on the second bottom bar and the third bottom bar, and fixing the collector in water; adjusting the height of the blowing frame to horizontally fix the gas distribution pipe of the blowing device at a height of 2cm away from the water surface, and enabling the gas outlet to be lower than 2cm away from the water surface; placing the collecting device on a first collecting rack and a second collecting rack, and adjusting the lengths of the air blowing rack and the collecting rack to enable the open end of the collecting device to face an air outlet pipe of the air blowing device and enable the upper half part of the collecting device to be exposed out of the water surface;
(2) air is introduced into an air inlet pipe of the air blowing device, so that the air is blown to the surface of the water layer through the air blowing device, the floating larvae move into the net cage by means of surface air flow, and after 15-20 min, the collecting device is taken down, and the abalone floating larvae in the collecting device are taken out.
8. The collecting method according to claim 7, wherein the angle formed by the air outlet pipe of the air blowing device and the horizontal plane is 1-2 °.
9. The collecting method according to claim 7, wherein the flow rate of the air in the single pipe of the air outlet pipe is 24-36L/min.
10. The collecting method according to claim 7, wherein the distance between the air outlet and the open end of the collecting device is 0.8-1.2 m.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202010256960.XA CN111387154A (en) | 2020-04-03 | 2020-04-03 | Air blowing type abalone planktonic larva collection method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010256960.XA CN111387154A (en) | 2020-04-03 | 2020-04-03 | Air blowing type abalone planktonic larva collection method |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101057564A (en) * | 2007-04-18 | 2007-10-24 | 广东海洋大学 | Seeding collecting method for bivalves pelagic larvae and using seeding collecting device |
| CN101112192A (en) * | 2007-08-31 | 2008-01-30 | 浙江省海洋水产养殖研究所 | Device for catching plankton |
| CN201690900U (en) * | 2010-02-05 | 2011-01-05 | 侯旭光 | Seedling incubating and cultivating device |
| CN205390011U (en) * | 2016-03-01 | 2016-07-27 | 通威股份有限公司 | Clear away fish pond of foam fast |
-
2020
- 2020-04-03 CN CN202010256960.XA patent/CN111387154A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101057564A (en) * | 2007-04-18 | 2007-10-24 | 广东海洋大学 | Seeding collecting method for bivalves pelagic larvae and using seeding collecting device |
| CN101112192A (en) * | 2007-08-31 | 2008-01-30 | 浙江省海洋水产养殖研究所 | Device for catching plankton |
| CN201690900U (en) * | 2010-02-05 | 2011-01-05 | 侯旭光 | Seedling incubating and cultivating device |
| CN205390011U (en) * | 2016-03-01 | 2016-07-27 | 通威股份有限公司 | Clear away fish pond of foam fast |
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Application publication date: 20200710 |