A method and device for acclimating larvae of the thrips

Abstract

The present invention provides a method and device for acclimating fry of the thrips to mouth opening. The present invention adopts a siphon titration feeding method. To address the problem that fry of the thrips have difficulty in opening their mouths, the siphon principle is utilized to titrate brine shrimp into a seedling cultivation tank, and the fry are acclimated to the feeding process. The method enables the seedlings to fully ingest bait organisms, improves the feeding rate, and can effectively improve the survival rate of the seedlings and the utilization rate of bait.

Description

Technical Field

[0001] The invention relates to a method and a device for acclimating larvae of Platypharyngeus circumvallate to open their mouths. Background Art

[0002] Platypharyngeal tooth fish ( Platypharodon extremus ) belongs to the genus Platypharyngeus of the subfamily Schizothorinae. It is a unique monotypic genus and species of fish, mainly distributed in rivers and lakes on the Qinghai-Tibet Plateau. It can adapt to extreme environments such as high altitude and low oxygen, and has the characteristics of slow growth rate and late age of sexual maturity.

[0003] During the process of artificial breeding and domestication for many years, after exploration, the present invention has developed a method and device suitable for the opening of fry of the polar platypharyngeal tooth fish, namely, the siphon titration feeding method. To address the problem that fry of the polar platypharyngeal tooth fish have difficulty opening their mouths, the siphon principle is used to titrate Artemia into the seedling cultivation tank, and the fry are domesticated to adapt to the feeding process. This method can enable the fry to fully absorb bait organisms, improve the feeding rate, and effectively improve the survival rate of the fry and the utilization rate of bait. Summary of the Invention

[0004] In order to solve the above technical problems, the present invention provides a method and device for acclimating larvae of the thrush to open their mouths, so as to solve the problems in the prior art. The technical solution adopted by the present invention is:

[0005] A device for acclimating larval fish of the thrush, comprising a bait tank, an aeration device, a burette, and a seedling cultivation tank;

[0006] The aeration device is provided in the bait tank;

[0007] The bait tank is connected to the seedling cultivation tank through the burette, and the seedling cultivation tank is located below the bait tank. The burette inputs the bait into the seedling cultivation tank through siphon action.

[0008] The burette is provided with a dripping funnel and a flow valve.

[0009] Furthermore, the aeration device includes a motor, a main shaft, a sleeve, an impeller, a bearing and a spiral blade;

[0010] The sleeve is a hollow structure, the outer side surface of the bottom of the sleeve is fixedly connected to the impeller, the top of the sleeve is rotatably connected to the top of the main shaft through the bearing, the main shaft is inserted into the sleeve, the top of the main shaft is fixedly connected to the output end of the motor, the motor is installed on the bait tank through a bracket, and the spiral blade is fixedly connected to the main shaft.

[0011] A method for acclimating larvae of the thrips larvae to their mouth opening comprises the following steps:

[0012] Step 1: prepare bait;

[0013] Step 2: Add an aeration device to the bait tank to allow air to enter the tank so that the bait is evenly dispersed in the water.

[0014] Step 3: Place one end of the burette into the bait tank and the other end into the seedling cultivation tank, open the flow valve to adjust, so that the Artemia is siphoned from the bait tank to the seedling cultivation tank through the burette;

[0015] Step 4: Before releasing the newly hatched fry, disinfect the seedling cultivation tank with quicklime;

[0016] Step 5: Transfer the fry to the seedling cultivation tank, open the water supply and drainage system, control the water flow rate, and start feeding;

[0017] Step 6: Open the flow valve at a fixed time every day to control the titration rate. The fry will actively eat the bait dripped into the seedling cultivation tank.

[0018] Step 7: Feed once in the morning and once in the afternoon every day;

[0019] Step 8: Feed the fish continuously for 3 months using the methods of steps 6 and 7, until the fish start to eat the feed.

[0020] Step 9: Clean the burette regularly to remove impurities.

[0021] Furthermore, step 1 includes: using povidone iodine or ozone for short-term aeration disinfection, mixing the cultivated Artemia with water in a ratio of 1:300, and pouring the mixture into the bait tank 1.

[0022] Furthermore, in step 7, the total amount of Artemia is controlled at 200 g per day.

[0023] The present invention has the following beneficial effects:

[0024] The raw materials of the present invention are cheap and easily available, and the cost is low; the process is simple, the reaction conditions are mild, and the energy consumption is low; the post-processing process is easy and environmentally friendly; the yield of the product is high and the quality is good. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0026] Figure 2 It is a structural diagram of the aeration device;

[0027] Figure 3 is a schematic cross-sectional view of an aeration device;

[0028] In the figure: bait tank 1, aeration device 2, drip bucket 3, burette 4, flow valve 5, seedling cultivation tank 6, DETAILED DESCRIPTION

[0029] The following is a combination of the embodiments of the present invention Figure 1-Figure 3 , the technical solutions in the embodiments of the present invention are described clearly and completely. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Unless otherwise specified, the technical means used in the embodiments are conventional means well known to those skilled in the art.

[0030] A method for acclimating larvae of the thrips larvae to their mouth opening comprises the following steps:

[0031] Step 1: Prepare the bait. Use povidone iodine 1-2 mg / L or ozone short-time aeration disinfection. Mix the cultivated Artemia with water at a ratio of 1:300, pour it into the bait tank 1, and feed the fry at an initial density of ≤50,000 / m³.

[0032] Step 2: Install the pipeline, add an aeration device 2 to the bait tank 1, and let air into the bait tank so that the Artemia bait can be evenly dispersed in the water to ensure the effect of siphon feeding.

[0033] Step 3: Place one end of the burette 4 into the bait tank and the other end into the seedling cultivation tank 6, open the flow valve 5 for adjustment, so that the Artemia can be siphoned from the bait tank 1 into the seedling cultivation tank 6 by the burette 4.

[0034] Step 4: Before releasing the newly hatched fry, disinfect the seedling cultivation tank with quicklime6.

[0035] Step 5: Transfer 30,000 fry to a seedling rearing tank 6 with a diameter of 3 meters, open the water supply and drainage system, and control the water flow rate at 4 m / min. After 2 days, observe that there is no abnormality in the activity and start feeding.

[0036] Step 6: Open the flow valve 5 at a fixed time every day, control the titration rate at 100 drops / min, and the fry will actively eat the Artemia bait dripped into the seedling cultivation tank 6.

[0037] Step 7: Feed once in the morning and once in the afternoon every day. The total amount for the whole day should be controlled at 200 g of Artemia.

[0038] Step 8: Feed continuously for 3 months using the methods of steps 6 and 7 until the seedlings switch to bait and start to eat feed.

[0039] Step 9: Regularly clean the impurities in the burette 4 to ensure the smooth flow of the pipeline and the feeding effect.

[0040] A device for acclimating larval fish of the thrush, comprising a bait tank 1, an aeration device 2, a burette 4, and a seedling cultivation tank 6;

[0041] The aeration device 2 is provided in the bait tank 1;

[0042] The bait tank 1 is connected to the seedling cultivation tank 6 through the burette 4. The seedling cultivation tank 6 is located below the bait tank 1. The burette 4 inputs the bait into the seedling cultivation tank 6 through siphon action.

[0043] Furthermore, the burette 4 is provided with a dripping bucket 3 and a flow valve 5 .

[0044] Furthermore, the aeration device 2 includes a motor 201, a main shaft 202, a sleeve 203, an impeller 204, a bearing 205 and a spiral blade 206;

[0045] The sleeve 203 is a hollow structure, and the outer side surface of the bottom of the sleeve 203 is fixedly connected to the impeller 204. The top of the sleeve 203 is rotatably connected to the top of the main shaft 202 through the bearing 205. The main shaft 202 is inserted into the sleeve 203. The top of the main shaft 202 is fixedly connected to the output end of the motor 201. The motor 201 is installed on the bait tank 1 through a bracket, and the spiral blade 206 is fixedly connected to the main shaft 202.

[0046] Specifically, the motor 201 can be mounted on the bait tank 1 via a bracket to secure the motor 201. When the motor 201 is operating, it drives the main shaft 202 and the spiral blade 206 to rotate. When the spiral blade 206 rotates, it generates a downward thrust on the air in the sleeve 203, thereby forming a negative pressure hollow chamber in the sleeve 203. The negative pressure hollow chamber draws air from the top of the sleeve 203 and discharges it into the water body of the bait tank 1, thereby mixing the air with the water body to achieve the aeration function. At the same time, under the friction of the bearing 205, the main shaft 202 drives the sleeve 203 to rotate slowly, causing the main shaft 202 and the sleeve 203 to form a differential rotation, so that the sleeve 203 drives the impeller 204 to achieve the stirring function of the bait tank 1. Therefore, the aeration device 2 of the present invention can simultaneously achieve the two functions of aeration and stirring.

[0047] A specific embodiment is given below:

[0048] like Figure 1As shown, a bait tank 1 is placed beside a seedling cultivation tank 6, and the liquid level of the bait tank will be higher than the water level of the seedling cultivation tank, an aerator 2 is fed into the bait tank 1, and Artemia is guaranteed to be evenly dispersed in the bait tank 1, so as to provide a basis for siphon feeding, one end of a burette 4 is placed in the bait tank 1, and the other end is placed in the seedling cultivation tank 6, and a dripping hopper 3 is squeezed so that bait can enter the seedling cultivation tank 6 from the bait tank 1 through the burette 4, and then a flow valve 5 is adjusted so that the titration rate is controlled at 100 drops / min. Every day at the same time, the siphon feeding system is opened, and the larvae of the extremely marginal flat pharyngeal tooth fish are fed for 3 to 4 months until the bait is changed and the feed is started to be ingested, thus realizing the acclimation process of the larvae.

[0049] Comparison table of the effects of using the method of the present invention

[0050]

[0051] The embodiments described above are merely descriptions of preferred embodiments of the present invention and are not intended to limit the scope of the present invention. Without departing from the spirit of the present invention, various deformations, modifications, and substitutions made to the technical solutions of the present invention by ordinary technicians in this field should fall within the scope of protection determined by the claims of the present invention.

Claims

1. A device for acclimating larval fish to their mouth opening, characterized in that: It includes a bait tank (1), an aeration device (2), a burette (4) and a seedling cultivation tank (6); The aeration device (2) is provided in the bait tank (1); The bait tank (1) is connected to the seedling cultivation tank (6) via the burette (4); the seedling cultivation tank (6) is located below the bait tank (1); the burette (4) inputs the bait into the seedling cultivation tank (6) through a siphon effect; The burette (4) is provided with a dripping funnel (3) and a flow valve (5); The aeration device (2) comprises a motor (201), a main shaft (202), a sleeve (203), an impeller (204), a bearing (205), and a spiral blade (206); The sleeve (203) is a hollow structure. The outer side surface of the bottom of the sleeve (203) is fixedly connected to the impeller (204). The top of the sleeve (203) is rotatably connected to the top of the main shaft (202) through the bearing (205). The main shaft (202) is inserted into the sleeve (203). The top of the main shaft (202) is fixedly connected to the output end of the motor (201). The motor (201) is installed on the bait tank (1) through a bracket. The spiral blade (206) is fixedly connected to the main shaft (202).

2. A method for acclimating larval fish of the thrush, applied to the larval fish acclimation device of claim 1, characterized in that: The following steps are involved: Step 1: prepare bait; Step 2: Add an aeration device (2) to the bait tank (1) to allow air to enter the bait tank so that the bait is evenly dispersed in the water; Step 3: Place one end of the burette (4) into the bait tank and the other end into the seedling cultivation tank (6), open the flow valve (5) to adjust the flow so that the Artemia is siphoned from the bait tank (1) into the seedling cultivation tank (6) by the burette (4); Step 4: Disinfect the seedling rearing tank with quicklime before stocking the newly hatched fry (6); Step 5: Transfer the fry to the seedling cultivation tank (6), open the water inlet and outlet system, control the water flow rate, and start feeding; Step 6: Open the flow valve at a fixed time every day to control the titration rate, so that the fry will actively eat the bait dripped into the seedling cultivation tank (6); Step 7: Feed once in the morning and once in the afternoon every day; Step 8: Feed the fish continuously for 3 months using the methods of steps 6 and 7, until the fish start to eat the feed. Step 9: Clean the impurities in the burette (4) regularly.

3. A method for acclimating larvae of the larvae of the pharyngeal tooth fish according to claim 2, characterized in that: Step 1 comprises: using povidone iodine or ozone for short-term aeration disinfection, mixing the cultivated Artemia with water at a ratio of 1:300, and pouring the mixture into the bait tank (1).

4. A method for acclimating larvae of the larvae of the pharyngeal tooth fish according to claim 2, characterized in that: In step 7, the total amount of Artemia for the whole day is controlled at 200 g.

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