CN221104490U - Dedicated living bait throwing system is cultivated to coilia ectenes offspring seed - Google Patents
Dedicated living bait throwing system is cultivated to coilia ectenes offspring seed Download PDFInfo
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- CN221104490U CN221104490U CN202322654697.1U CN202322654697U CN221104490U CN 221104490 U CN221104490 U CN 221104490U CN 202322654697 U CN202322654697 U CN 202322654697U CN 221104490 U CN221104490 U CN 221104490U
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- 241001460967 Coilia nasus Species 0.000 title claims abstract description 69
- 241000251468 Actinopterygii Species 0.000 claims abstract description 79
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 claims abstract description 26
- 238000006213 oxygenation reaction Methods 0.000 claims abstract description 25
- 239000004677 Nylon Substances 0.000 claims abstract description 24
- 229920001778 nylon Polymers 0.000 claims abstract description 24
- 238000002955 isolation Methods 0.000 claims abstract description 12
- 229910001220 stainless steel Inorganic materials 0.000 claims abstract description 11
- 239000010935 stainless steel Substances 0.000 claims abstract description 11
- 230000001105 regulatory effect Effects 0.000 claims description 7
- 239000006260 foam Substances 0.000 claims description 4
- 235000013601 eggs Nutrition 0.000 abstract description 30
- 238000000034 method Methods 0.000 abstract description 12
- 230000012447 hatching Effects 0.000 abstract description 11
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 17
- 239000000463 material Substances 0.000 description 6
- 238000009395 breeding Methods 0.000 description 5
- 230000001488 breeding effect Effects 0.000 description 5
- 239000013505 freshwater Substances 0.000 description 4
- 239000007921 spray Substances 0.000 description 4
- 230000009182 swimming Effects 0.000 description 3
- ODINCKMPIJJUCX-UHFFFAOYSA-N Calcium oxide Chemical compound [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 description 2
- 241000195649 Chlorella <Chlorellales> Species 0.000 description 2
- 241000195493 Cryptophyta Species 0.000 description 2
- 241000238631 Hexapoda Species 0.000 description 2
- 230000009471 action Effects 0.000 description 2
- 238000005273 aeration Methods 0.000 description 2
- 239000004568 cement Substances 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 238000012258 culturing Methods 0.000 description 2
- 238000011534 incubation Methods 0.000 description 2
- 239000012528 membrane Substances 0.000 description 2
- 239000002689 soil Substances 0.000 description 2
- 230000004083 survival effect Effects 0.000 description 2
- CPKVUHPKYQGHMW-UHFFFAOYSA-N 1-ethenylpyrrolidin-2-one;molecular iodine Chemical compound II.C=CN1CCCC1=O CPKVUHPKYQGHMW-UHFFFAOYSA-N 0.000 description 1
- 229920000153 Povidone-iodine Polymers 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 235000012255 calcium oxide Nutrition 0.000 description 1
- 239000000292 calcium oxide Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000011033 desalting Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000003203 everyday effect Effects 0.000 description 1
- 239000003337 fertilizer Substances 0.000 description 1
- 235000013305 food Nutrition 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 230000001418 larval effect Effects 0.000 description 1
- 235000016709 nutrition Nutrition 0.000 description 1
- 230000035764 nutrition Effects 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 229960001621 povidone-iodine Drugs 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 239000006041 probiotic Substances 0.000 description 1
- 235000018291 probiotics Nutrition 0.000 description 1
- 230000000644 propagated effect Effects 0.000 description 1
- 230000000384 rearing effect Effects 0.000 description 1
- 239000013535 sea water Substances 0.000 description 1
- 238000011218 seed culture Methods 0.000 description 1
- 230000000638 stimulation Effects 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
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Abstract
The utility model relates to the field of coilia ectenes offspring seed cultivation, in particular to a living bait throwing system special for coilia ectenes offspring seed cultivation. The upper frame main body of the system is a cylindrical stainless steel frame, the outer side of the upper frame main body is covered with a box body surrounded by a 40-mesh nylon bolting silk net, the upper part of the box body is a cover, the bottom of the box body is a fish isolation net, and a floater is tied at the top of the side surface of the box body; the middle annular disc-shaped acrylic supporting plate is positioned below the fish isolation net; the lower frame body is a cylindrical stainless steel frame, the outer side of the upper part of the lower frame body is covered with a fish outlet net surrounded by a 5-mesh nylon bolting silk net, the outer side and the bottom of the lower part of the lower frame body are covered with an egg collecting bag surrounded by a mesh nylon bolting silk net, and a disc-shaped micropore oxygenation pipe is arranged at the bottom of the egg collecting bag. The method can meet the supply requirement of living bait fish during the cultivation of coilia ectenes fries, reduce the loss caused by the parent fish feeding of the same kind of fish eggs or fries, improve the hatching efficiency and reduce the manual operation.
Description
Technical Field
The utility model relates to the field of coilia ectenes offspring seed cultivation, in particular to a living bait throwing system special for coilia ectenes offspring seed cultivation.
Background
The coilia ectenes are common fishes in China, resources are greatly reduced due to environmental changes and excessive fishing, natural distribution of the Yangtze river mouth and Liaohe river mouth of the original place is extinct, artificial cultivation of the coilia ectenes is carried out, and the coilia ectenes have important effects on protecting and repairing coilia ectenes resources and protecting biodiversity. After the opening of the coilia ectenes fries, the coilia ectenes fries need to be domesticated and fed with artificial compound feed or fed with water flower fries, wherein the survival rate of the coilia ectenes fries fed with water flower fries is higher. However, in northern areas, most fresh water spray fries have spawning time of 4-5 months, while coilia ectenes are cultivated and fed with spray fries for 7 months, so that the difficulty in obtaining the spray fries is high. The freshwater ponds and wild rivers have a plurality of small fishes, the individuals are smaller, and the fishes are usually fed as baits or the wild fishes are removed, so that the economic value is low. The propagation habit of the small-sized fish is generally multiple spawning, the spawning amount is small at one time, the spawning duration is long, the annual spawning amount is very considerable, the propagated fries can be fed as bait fishes after the opening of the fries of coilia ectenes, and the method has important significance for meeting the bait supply during the cultivation of the fries of coilia ectenes.
The traditional method for artificial breeding of bait fish and feeding of coilia ectenes fries has the following defects: (1) The bait fish has multiple types and the fertilized eggs have non-uniform incubation time; (2) The bait fish has less spawning quantity at one time, and the traditional method has low efficiency; (3) The traditional method adopts still water for hatching, the water exchange amount is small, the number of fertilized eggs hatched in a unit water is small, and the hatching rate is low; (4) The coilia ectenes fries need to continuously ingest bait fish water fries in a two-month cultivation period, and the traditional method is difficult to meet; (5) Parent fish of bait ingests the spawn which is not hatched, and loss is caused. (5) high labor cost.
Disclosure of utility model
The utility model aims to provide a living bait throwing system special for coilia ectenes offspring breeding, which solves the problems of non-uniform hatching time, low hatching rate, insufficient continuous bait fish supply time, high labor cost, high cost and the like of traditional method breeding bait fish in the current coilia ectenes artificial breeding link.
In order to achieve the above purpose, the present utility model adopts the following technical scheme:
The upper frame main body, the acrylic supporting plate and the lower frame main body of the system are coaxially and sequentially arranged and connected from top to bottom, the upper frame main body is a cylindrical stainless steel frame, the outer side of the upper frame main body is covered with a box body surrounded by a 40-mesh nylon bolting silk net, the upper part of the box body is a cover, the bottom of the box body is a fish isolation net, and the top of the side surface of the box body is tied with a floater; the middle annular disc-shaped acrylic supporting plate is positioned below the fish isolation net; the lower frame body is a cylindrical stainless steel frame, the outer side of the upper part of the lower frame body is covered with a fish outlet net surrounded by a 5-mesh nylon bolting silk net, the outer side and the bottom of the lower part of the lower frame body are covered with an egg collecting bag surrounded by a mesh nylon bolting silk net, and a disc-shaped micropore oxygenation pipe is arranged at the bottom of the egg collecting bag.
The special living bait throwing system for coilia ectenes offspring seed cultivation is characterized in that an upper port of an acrylic support plate is connected with the lower end of a box body, a lower port of the acrylic support plate is connected with the top end of a fish net, the diameter of the upper port of the acrylic support plate is the same as that of an upper frame main body, and the diameter of the lower port of the acrylic support plate is the same as that of a lower frame main body.
The body of the upper frame body is cylindrical with the diameter of 200cm and the height of 100 cm.
The coilia ectenes offspring seed cultivation special living bait throwing system is characterized in that the acrylic supporting plate is of an annular three-dimensional structure with the upper port diameter of 200cm, the lower port diameter of 100cm and the height of 20 cm.
The lower frame body is cylindrical with the diameter of 100cm and the height of 60 cm.
The cover of the living bait throwing system special for coilia ectenes offspring seed cultivation is a 40-mesh nylon bolting silk net, and the fish isolation net is a 5-mesh nylon bolting silk net.
The special living bait throwing system for coilia ectenes offspring seed cultivation has a fish net height of 10cm, the lower end of the fish net is connected with the upper end of an egg collecting bag, the egg collecting bag is a 40-mesh nylon bolting silk net, and the height is 50cm.
The device is characterized in that the device comprises a coilia ectenes offspring seed cultivation special living bait throwing system, a disc-shaped microporous oxygenation pipe is arranged at the bottom of an egg collecting bag, the microporous oxygenation pipe is a coiled oxygenation pipe, the diameter of the microporous oxygenation pipe is 80cm, the microporous oxygenation pipe is connected with an air flow regulating valve, and the air flow regulating valve is connected with a Roots blower at the side of a pond through an air duct.
The living bait throwing system special for coilia ectenes offspring seed cultivation adopts a foam floater with the diameter of 15 cm.
The living bait throwing system special for coilia ectenes offspring seed cultivation has the following advantages and beneficial effects:
1. when the method is used for throwing the living baits special for coilia ectenes fries cultivation, the baits for the coilia ectenes fries can be provided for 1-2 months, and the problem of the requirements for the baits in coilia ectenes fries cultivation is solved.
2. When the method is used for throwing the living baits special for coilia ectenes fingerling cultivation, the use of artificial compound feeds is reduced, and meanwhile, the wild fishes which should be removed originally are fully utilized as the baits, so that the cost is reduced.
3. When the method is used for throwing the living baits special for coilia ectenes fingerling cultivation, nylon bolting silk nets with different densities are adopted, so that the parent fish, fertilized eggs and initially hatched fries of the baits are effectively separated, the manual operation is reduced, and the working efficiency is improved.
4. The middle part of the utility model adopts the acrylic supporting plate with smooth inner wall, so that fertilized eggs can enter the egg collecting bag at the lower part to hatch in time, and the adhesion of viscous fertilized eggs on the surface of equipment can be avoided.
5. The lower part of the utility model is composed of a 5-mesh fish outlet net and a 40-mesh egg collecting bag, and two different densities of bolting silk nets are adopted, so that fertilized eggs can be hatched in the egg collecting bag, and fish fries hatched and broken membranes can swim out of the fish outlet net.
6. The utility model has extremely simple design and operation, and only needs to regularly put a certain amount of bait fish spawning parent fish and moderately adjust the air valve according to the hatching state of fertilized eggs.
In a word, the special living bait throwing system for culturing coilia ectenes fries is designed and customized according to the propagation characteristics of bait fishes, and is made by adopting a stainless steel frame and an acrylic plate as supporting materials and externally coating nylon bolting silk nets with different densities. According to the bait demand of coilia ectenes offspring breeding, a certain amount of bait fish spawning parent fish is thrown into the box body regularly, and spawning is performed under the stimulation of micro-flowing water caused by micro-pore oxygenation at the bottom. The fertilized eggs produced fall into an egg collecting bag at the lower part of the system under the action of gravity, and are suspended in water for hatching under the action of bubbles of a microporous oxygenation tube. After the bait fish fries hatch out, the bait fish fries can simply move horizontally and up and down along with the swimming capability enhancement of the bait fish fries, cruises to the outside of the system from the holes of the fish outlet net, and the coilia ectenes can timely capture the cruising bait fish fries so as to achieve the purpose of feeding.
Drawings
Fig. 1 is a side view of a living bait throwing system special for coilia ectenes fingerling cultivation.
Fig. 2 is a top view cross section of the upper part of the living bait throwing system special for coilia ectenes offspring seed cultivation according to the present utility model.
FIG. 3 is a top view of the lower part of the living bait throwing system special for coilia ectenes offspring seed cultivation according to the present utility model.
In the figure, 1, a floater, 2, a cover, 3, an upper frame main body, 4, a box body, 5, an acrylic supporting plate, 6, a fish net, 7, a lower frame main body, 8, an egg collecting bag, 9, a micropore oxygenation pipe, 10 and a fish isolation net.
Detailed Description
The utility model is further elucidated below by means of examples and figures.
As shown in fig. 1 to 3, the utility model provides a living bait throwing system special for coilia ectenes offspring seed cultivation, which mainly comprises: the float 1, the cover 2, the upper frame body 3, the box body 4, the acrylic supporting plate 5, the fish outlet net 6, the lower frame body 7, the egg collecting bag 8, the micropore oxygenation pipe 9, the fish isolation net 10 and the like have the following specific structures:
The upper frame main body 3 is a cylindrical stainless steel frame, a box body 4 surrounded by a 40-mesh nylon bolting silk net is covered on the outer side of the upper frame main body 3, a cover 2 is arranged on the upper part of the box body 4, a fish isolation net 10 is arranged at the bottom of the box body 4, and a floater 1 is tied on the top of the side surface of the box body 4; the middle annular disc-shaped acrylic supporting plate 5 is positioned below the fish isolation net 10; the lower frame body 7 is a cylindrical stainless steel frame, the outer side of the upper part of the lower frame body 7 is covered with a fish outlet net 6 surrounded by a 5-mesh nylon bolting silk net, the outer side and the bottom of the lower part of the lower frame body 7 are covered with an egg collecting bag 8 surrounded by a 40-mesh nylon bolting silk net, and a disc-shaped micropore oxygenation tube 9 is arranged at the bottom of the egg collecting bag 8.
The upper frame main body 3, the acrylic supporting plate 5 and the lower frame main body 7 are coaxially and sequentially arranged and connected from top to bottom, the upper port of the acrylic supporting plate 5 is connected with the lower end of the box body 4, the lower port of the acrylic supporting plate 5 is connected with the top end of the fish net 6, the diameter of the upper port of the acrylic supporting plate 5 is the same as that of the upper frame main body 3, and the diameter of the lower port of the acrylic supporting plate 5 is the same as that of the lower frame main body 7.
The upper frame body 3 is made of stainless steel material and is cylindrical with a diameter of 200cm and a height of 100 cm.
The acrylic supporting plate 5 is made of smooth plastic and is of an annular three-dimensional structure with the diameter of an upper port of 200cm, the diameter of a lower port of 100cm and the height of 20 cm.
The lower frame body 7 is made of stainless steel material and is cylindrical with a diameter of 100cm and a height of 60 cm.
The cover 2 and the box body 4 are made of 40-mesh nylon bolting silk nets, and can be opened or completely closed; the fish isolation net 10 is made of 5-mesh nylon bolting silk net.
The material of the fish outlet net 6 is 5-mesh nylon bolting silk net, the height is 10cm, the lower end of the fish outlet net 6 is connected with the upper end of the egg collecting bag 8, the material of the egg collecting bag 8 is 40-mesh nylon bolting silk net, and the height is 50cm.
The bottom of the egg collecting bag 8 is provided with a disc-shaped microporous oxygenation tube 9, the microporous oxygenation tube 9 is a coiled oxygenation tube, the diameter of the microporous oxygenation tube is 80cm, the microporous oxygenation tube 9 is connected with an air flow regulating valve, the air flow regulating valve is connected with a Roots blower at the side of the pond through an air duct to form an air charging device, the micro-flow of water is controlled through the air flow regulating valve, the size of the microporous oxygenation tube 9 is generally 20mm in outer diameter x 10mm in inner diameter x 2m in length, and the diameter of micro-bubbles which can be generated is 20-30 mu m.
The material of the floater 1 is foam, and a foam floater with the diameter of 15cm is adopted.
In this embodiment, the procedure of the coilia ectenes fry rearing is as follows:
(1) Hatching coilia ectenes fertilized eggs
The fertilized eggs of the coilia ectenes are put into a cement pond for hatching, the water depth of the cement pond is 1.2 meters, the putting density is 600 grains/cubic meter, and the aeration hatching is kept. The incubation time was 26h at a water temperature of 22 ℃.
(2) Larval fish period management
After membrane rupture, the coilia ectenes fries are transparent throughout the body, the body length is about 5mm, and the coilia ectenes fries only have short swimming up and down capability and cannot horizontally move. After 72 hours, the coilia ectenes fries have the ability of swimming horizontally, and the body length is 6-7 mm. Keep aeration and oxygenation, and spray probiotics to adjust water quality every day in the whole pool.
(3) Open-top bait supply
Culturing seawater chlorella in a bait workshop, desalting or purchasing commodity freshwater chlorella for feeding, so that the density of algae in a coilia ectenes fry culture pond reaches 20000 algae/ml, and feeding for 5 days. Then the feeding SS wheel insects are converted, the density of the wheel insects in the coilia ectenes cultivation pool is kept to be more than 10 ml, and timely supplement is needed when the bait quantity is found to be insufficient. Feeding the coilia ectenes fries for 20 days until the coilia ectenes fries reach about 10 mm.
(4) Outdoor soil pond preparation
A 2000m 2 freshwater soil pond was prepared, which was 2m deep. The pond water is drained, and the quicklime is cleaned by a dry method, and the dosage is 75-125 kg/667m 2. The next day, the water depth was increased to 0.6m and water was injected through 60 mesh wing. The inorganic fertilizer is sprayed in the whole pool, and the dosage is 2kg/667m 2. And 7d, after water is injected to 2m, the living body bait throwing system shown in the figures 1-3 can be placed. The interval between the single living body bait throwing systems is more than 5m, the Roots blower is arranged at the side of the pond and is connected with the microporous oxygenation tube at the bottom of the living body bait throwing system through a hose.
(5) Bait fish parent fish throwing
Parent fish of bait fish captured from open river and culture pond is bathed with povidone iodine solution with concentration of 1mg/L for 5min. The parent fish of the bait fish after medicated bath is washed by clear water, and after the parent fish is put into the upper box body 4 of the living bait putting system, the air charging device is started to charge air for 24 hours.
(6) Coilia ectenes fry throwing in
After parent fish of the bait fish is put into the living bait putting system 10d, whether the fish fries of the bait fish swim around the system is observed. When the bait fish swims, the coilia ectenes fries can be put into the pond. At the moment, the specification of the coilia ectenes fries is more than 6cm, and the coilia ectenes fries have the capability of actively predating bait fishes.
(7) Large-size seed culture and domestication
As coilia ectenes grow, excess bait fish not captured by coilia ectenes will grow continuously and eventually will be caught by coilia ectenes fries. After two months of cultivation, the coilia ectenes fries generally reach more than 15cm, and then enter the domestication and food conversion stage.
The result shows that the utility model provides a brand new living bait throwing system special for coilia ectenes seedling raising, which can meet the supply requirement of living bait fish during coilia ectenes seedling raising, improve the fish fry raising efficiency, reduce the nutrition requirement of initially hatched fries, reduce the loss caused by feeding parent fish of the bait fish with similar fish eggs or fries, improve the survival rate and the hatching efficiency, reduce the manual operation and improve the emergence rate per unit volume.
Claims (9)
1. A special living bait throwing system for cultivating coilia ectenes fries is characterized in that an upper frame main body, an acrylic supporting plate and a lower frame main body of the system are coaxially and sequentially arranged and connected from top to bottom, the upper frame main body is a cylindrical stainless steel frame, a box body surrounded by a 40-mesh nylon bolting silk net is covered on the outer side of the upper frame main body, the upper part of the box body is a cover, the bottom of the box body is a fish isolation net, and a floater is tied on the top of the side surface of the box body; the middle annular disc-shaped acrylic supporting plate is positioned below the fish isolation net; the lower frame body is a cylindrical stainless steel frame, the outer side of the upper part of the lower frame body is covered with a fish outlet net surrounded by a 5-mesh nylon bolting silk net, the outer side and the bottom of the lower part of the lower frame body are covered with an egg collecting bag surrounded by a mesh nylon bolting silk net, and a disc-shaped micropore oxygenation pipe is arranged at the bottom of the egg collecting bag.
2. The living bait throwing system special for coilia ectenes offspring seed cultivation according to claim 1, wherein the upper port of the acrylic support plate is connected with the lower end of the box body, the lower port of the acrylic support plate is connected with the top end of the fish net, the diameter of the upper port of the acrylic support plate is the same as the diameter of the upper frame body, and the diameter of the lower port of the acrylic support plate is the same as the diameter of the lower frame body.
3. The living bait throwing system for coilia ectenes fingerling cultivation according to claim 1, wherein the upper frame body is cylindrical with a diameter of 200cm and a height of 100 cm.
4. The living bait throwing system special for coilia ectenes offspring seed cultivation according to claim 1, wherein the acrylic pallet is of a ring-shaped three-dimensional structure with an upper port diameter of 200cm, a lower port diameter of 100cm and a height of 20 cm.
5. The living bait throwing system special for coilia ectenes fingerling cultivation according to claim 1, wherein the lower frame body is in a cylindrical shape with a diameter of 100cm and a height of 60 cm.
6. The living bait throwing system special for coilia ectenes fingerling cultivation according to claim 1, wherein the cover is a 40 mesh nylon bolting silk net and the fish separating net is a5 mesh nylon bolting silk net.
7. The living bait throwing system special for coilia ectenes offspring seed cultivation according to claim 1, wherein the height of the fish net is 10cm, the lower end of the fish net is connected with the upper end of the egg collecting bag, the egg collecting bag is 40 mesh nylon bolting silk net, and the height is 50cm.
8. The living bait throwing system special for coilia ectenes offspring seed cultivation according to claim 1, wherein the disc-shaped microporous oxygenation pipe is arranged at the bottom of the egg collecting bag, the microporous oxygenation pipe is a coiled oxygenation pipe with the diameter of 80cm, the microporous oxygenation pipe is connected with an air flow regulating valve, and the air flow regulating valve is connected with a Roots blower at the side of the pond through an air duct.
9. The living bait throwing system special for coilia ectenes fingerling cultivation according to claim 1, wherein the float adopts a foam float with a diameter of 15 cm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322654697.1U CN221104490U (en) | 2023-09-28 | 2023-09-28 | Dedicated living bait throwing system is cultivated to coilia ectenes offspring seed |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322654697.1U CN221104490U (en) | 2023-09-28 | 2023-09-28 | Dedicated living bait throwing system is cultivated to coilia ectenes offspring seed |
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| Publication Number | Publication Date |
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| CN221104490U true CN221104490U (en) | 2024-06-11 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322654697.1U Active CN221104490U (en) | 2023-09-28 | 2023-09-28 | Dedicated living bait throwing system is cultivated to coilia ectenes offspring seed |
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| Country | Link |
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| CN (1) | CN221104490U (en) |
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2023
- 2023-09-28 CN CN202322654697.1U patent/CN221104490U/en active Active
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