阅读说明：本技术 一种海水贝类家系幼虫期的养殖方法 (Method for breeding seawater shellfish family in larval stage ) 是由 李家乐 陈义华 牛东红 董志国 李浩宇 丁红兵 于 2019-10-23 设计创作，主要内容包括：本发明公开了一种海水贝类家系幼虫期的养殖方法,包括如下步骤：设置一组外置箱体,并在每一个外置箱体中设置内置网箱；在外置箱体顶部设置用于加水的高位水箱,高位水箱底部通过出水管排水至内置网箱；将发育到担轮幼虫的缢蛏幼虫用300目筛绢收集后转移至内置网箱中；分别加注经过过滤消毒后的水至高位水箱,通过排水管排入内置网箱,在内置网箱中充氧养殖；每天分早、中、晚三次对高位水箱加注金藻、角毛藻混合液,通过排水管排入内置网箱；养殖过程中需要换水和清洁时,打开外置箱体底部的放水阀门进行换水和倒池清空处理,直至完成养殖,养殖过程中只需往高位水箱中加注混合藻液,降低了劳动强度,有效解决背景技术中的问题。(The invention discloses a method for breeding seawater shellfish family larva stage, which comprises the following steps: arranging a group of external box bodies, and arranging an internal net cage in each external box body; a high-level water tank for adding water is arranged at the top of the external box body, and the bottom of the high-level water tank is drained to the internal net cage through a water outlet pipe; collecting the sinonovacula constricta larvae which develop into trochophore larvae by using 300-mesh bolting silk and transferring the sinonovacula constricta larvae into a built-in net cage; respectively filling filtered and disinfected water into a high-level water tank, discharging the water into the built-in net cage through a drain pipe, and carrying out oxygen-filled culture in the built-in net cage; the high-level water tank is filled with the mixed liquid of the golden algae and the chaetoceros for three times in the morning, in the middle and at night every day and is discharged into the built-in net cage through the drain pipe; when water needs to be changed and cleaned in the breeding process, the drain valve at the bottom of the external box body is opened to change water and empty the pond, and the mixed algae liquid only needs to be filled into the high-level water tank in the breeding process until breeding is completed, so that the labor intensity is reduced, and the problem in the background art is effectively solved.)

1. A method for breeding seawater shellfish family larva stage is characterized by comprising the following steps:

s100, arranging a group of external box bodies, and arranging an internal net cage in each external box body;

s200, arranging a high-level water tank for adding water at the top of the external box body, and discharging water from the bottom of the high-level water tank to the internal net cage through a water outlet pipe;

s300, collecting the sinonovacula constricta larvae which develop into the trochophore larvae by using 300-mesh bolting silk, and transferring the sinonovacula constricta larvae into a built-in net cage;

s400, respectively filling filtered and disinfected water into a high-level water tank, discharging the water into an internal net cage through a drain pipe, and carrying out oxygen-filled culture in the internal net cage;

s500, filling a mixed solution of golden algae and chaetoceros into a high-level water tank three times in the morning, in the middle of and at night every day, and discharging the mixed solution into a built-in net cage through a drainage pipe;

and S600, when water is required to be changed and cleaned in the culture process, opening a water drain valve at the bottom of the external box body to change water and empty the pond until culture is finished.

2. The method for cultivating seawater shellfish family larva stage according to claim 1, wherein the volume of the high level tank is 1000L, the upper end of the high level tank is provided with a water inlet, the water outlet pipe is provided with a water outlet switch, and the height of the high level tank is 5m from the ground.

3. The method for cultivating seawater shellfish in the larval stage as claimed in claim 1, wherein in step S200, the volume of water added into the external tank is not more than 4/5 of the volume of the external tank, a water outlet is arranged at 4/5 height of the external tank, and the water outlet is connected with a water pump arranged in the high-level water tank through a return pipe.

4. The method for cultivating seawater shellfish in larval stage according to claim 1, wherein the internal net cage is made of 300 mesh bolting silk, and the periphery of the internal net cage is supported by a metal frame.

5. The method for cultivating seawater shellfish family in larval stage as claimed in claim 1, wherein the external box body is made of PVC material, each external net cage is provided with a jet pipe at the top end, the water outlet of the jet pipe is positioned above the internal net cage, the jet pipes are connected through a water supply pipe, the water supply pipe is in conduction connection with a water outlet pipe, and the water supply pipe is provided with a water supply switch for controlling the flow rate.

6. The method for cultivating seawater shellfish family in larval stage according to claim 4, wherein the height of the internal net cage is higher than that of the external box body, and the cross section specification of the internal net cage is smaller than that of the external box body.

7. The method for cultivating marine shellfish family larvae, as claimed in claim 1, wherein in S500, the volume ratio of the golden algae to the chaetoceros in the early stage of the facia larvae is 3:1, and the volume ratio of the golden algae to the chaetoceros in the later stage of the facia larvae is 1: 3.

8. The method of claim 1, wherein in step S400, each of the aeration pipes used for aeration cultivation is provided with a control valve for controlling the amount of aeration.

9. The method of claim 1, wherein in step S600, the frequency of water change is at least once a day, the frequency of pond replacement in the early stage of cultivation is once a day, and the frequency of pond replacement in the later stage of cultivation is once every two days.

Technical Field

The invention relates to the technical field of seawater shellfish larva breeding, in particular to a breeding method for a seawater shellfish family larva stage.

Background

The shellfish life history has a larva stage, the survival rate of the larva in the stage is very low, the requirement on water quality is very high, and the larva is very easy to damage and deform, so that the requirement on water changing operation of the larva is very high. The main idea of changing water is to filter out the larva by bolting silk and fill in new water. The traditional water changing method is to pour water onto bolting silk to complete collection of larvae, and comprises a plurality of siphon methods, but the methods are too time-consuming and labor-consuming and have large mechanical damage to larvae. Especially in the sinonovacula constricta seedling raising, family establishment and other scientific research experiments, a great deal of family water changing work consumes a great deal of time and labor.

Disclosure of Invention

In order to find a more effective implementation scheme, the invention provides a seawater shellfish family larva stage breeding method, which can change water for shellfish larvae of multiple breeding families simultaneously, greatly shortens the water changing time, reduces the labor intensity and effectively solves the problems in the background technology.

In order to realize the aim, the invention discloses a method for breeding seawater shellfish family larva stage, which comprises the following steps:

s100, arranging a group of external box bodies, and arranging an internal net cage in each external box body;

s200, arranging a high-level water tank for adding water at the top of the external box body, and discharging water from the bottom of the high-level water tank to the internal net cage through a water outlet pipe;

s300, collecting the sinonovacula constricta larvae which develop into the trochophore larvae by using 300-mesh bolting silk, and transferring the sinonovacula constricta larvae into a built-in net cage;

s400, respectively filling filtered and disinfected water into a high-level water tank, discharging the water into an internal net cage through a drain pipe, and carrying out oxygen-filled culture in the internal net cage;

s500, filling a mixed solution of golden algae and chaetoceros into a high-level water tank three times in the morning, in the middle of and at night every day, and discharging the mixed solution into a built-in net cage through a drainage pipe;

and S600, when water is required to be changed and cleaned in the culture process, opening a water drain valve at the bottom of the external box body to change water and empty the pond until culture is finished.

Preferably, the high-level water tank volume is 1000L, the upper end of the high-level water tank is provided with a water inlet, the water outlet pipe is provided with a water outlet switch, and the high-level water tank is 5m away from the ground.

Preferably, in the step S200, the volume of water added into the external tank does not exceed 4/5 of the volume of the external tank, a water outlet is arranged at the position 4/5 of the external tank, and the water outlet is connected with a water pump arranged inside the high level water tank through a return pipe.

Preferably, the internal net cage is made of 300 mesh bolting silk, and the periphery of the internal net cage is supported by a metal frame.

Preferably, the external box bodies are made of PVC materials, a jet pipe is arranged at the top end of each external net box, a water outlet of the jet pipe is located above the internal net box, the jet pipes are connected through a water supply pipe, the water supply pipe is in conduction connection with the water outlet pipe, and a water supply switch is arranged on the water supply pipe and used for controlling the flow rate.

Preferably, the height of the internal net cage is higher than that of the external box body, and the specification of the cross section of the internal net cage is smaller than that of the external box body.

Preferably, in S500, the volume ratio of the golden algae to the chaetoceros in the early stage of the washbasin larvae is 3:1, and the volume ratio of the golden algae to the chaetoceros in the later stage of the washbasin larvae is 1: 3.

Preferably, in step S400, each of the oxygenation pipes used for oxygenation cultivation is provided with a control valve for controlling the oxygenation amount.

Preferably, in step S600, the frequency of water changing is at least once a day, the frequency of pond changing in the early stage of cultivation is once a day, and the frequency of pond changing in the later stage of cultivation is once every two days.

Compared with the prior art, the method for breeding the seawater shellfish family larva stage has the following beneficial effects:

according to the invention, the shellfish larvae are directly cultured in the built-in net cage, water exchange and algae supply are completed through the gravity of the water body of the high-level water tank, and the damage and loss of larvae caused by the impact force of high water flow during drainage outlet filtration and siphon filtration are avoided; the bottom area of the built-in net cage is larger than that of a common filter net bag, so that the damage caused by high-density extrusion can be effectively reduced; the invention can control a plurality of breeding families simultaneously, thereby greatly reducing the labor amount and saving the time; in addition, the built-in net cages can be independently used, namely the built-in net cages are placed in a pool with a large area, different net cages are cultured in the same pool, and the growth and development difference of the shellfish larvae caused by the culture environment is avoided.

Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.

Drawings

The foregoing and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

FIG. 1 is a schematic structural view of a cultivation apparatus according to the present invention;

FIG. 2 is a schematic structural diagram of an external box according to the present invention;

FIG. 3 is a schematic view of the overall working process of the cultivation method of the present invention.

1-external box body; 2, arranging a net cage inside; 3-high level water tank; 4-water outlet pipe; 5-a jet pipe; 6-water supply pipe; 7-water supply switch; 8-a water drain valve; 9-a water outlet; 10-a return pipe; 11-water pump.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative only and should not be construed as limiting the invention.

Referring to fig. 1 to 3, the present invention discloses a method for cultivating seawater shellfish in larval stage, which comprises the following steps:

step S100, a group of external box bodies 1 are arranged, and an internal net cage 2 is arranged in each external box body 1;

the height of the internal net cage 2 is higher than that of the external box body 1, and the cross section specification of the internal net cage 2 is smaller than that of the external box body 1.

The built-in net cage 2 is made of 300-mesh bolting silk, and the periphery of the built-in net cage 2 is supported by a metal frame.

S200, arranging a high-level water tank 3 for adding water at the top of the external box body 1, and discharging water from the bottom of the high-level water tank 3 to the internal net cage 2 through a water outlet pipe 4;

the external box body 1 is made of PVC materials, a jet pipe 5 is arranged at the top end of each external net cage 1, a water outlet of the jet pipe is located above the internal net cage 2, the jet pipes 5 are connected through a water supply pipe 6, the water supply pipe 6 is in conduction connection with a water outlet pipe 4, and a water supply switch 7 is arranged on the water supply pipe 6 and used for controlling the flow speed.

In this embodiment, the external box 1 has a length, width and height of 790cm × 580cm × 570cm, respectively, and the internal net cage 2 has a length, width and height of 812cm × 600cm × 580cm, respectively.

In the step S200, the volume of the water added into the external box 1 is not more than 4/5 of the volume of the external box 1, a water outlet 9 is arranged at the position of 4/5 height of the external box 1, when water is injected specifically, the volume of the water added into the external box 1 is not more than 4/5 of the volume of the external box, water overflow and larva overflow are avoided, waste is reduced, and meanwhile the water outlet 9 arranged at the 4/5 height of the external box 1 can prevent water from being excessive.

Because the height of the built-in net cage 2 is higher than that of the external box body 1, the water outlet 9 arranged at the 4/5 height of the external box body 1 can effectively discharge water, when water is added into the built-in net cage 2 and the external box body 1 through the high-level water tank 3, the water level of the built-in net cage 2 can not reach the top end all the time due to the water outlet 9, the water and larvae in the built-in net cage 2 are effectively prevented from overflowing, and the breeding stability is ensured.

Furthermore, because the outlet 9 is connected with the water pump 11 arranged inside the high-level water tank 3 through the return pipe 10, the overflowing water can re-enter the high-level water tank 3 through the return pipe 10, and the continuous water supply of the built-in net cage 2 is realized by controlling the flow rate of the discharged water and the flow rate of the inlet water of the high-level water tank 3, so that the circular culture is realized.

The volume of the high-level water tank 3 is 1000L, a water inlet is formed in the upper end of the high-level water tank 3, a water outlet switch is arranged on the water outlet pipe, the external box bodies are 790cm multiplied by 580cm multiplied by 570cm in length, width and height respectively, and the internal net cages are 812cm multiplied by 600cm multiplied by 580cm in length, width and height respectively.

The height of the high-level water tank 3 is 5m from the ground.

S300, collecting the sinonovacula constricta larvae which develop into the trochophore larvae by using 300-mesh bolting silk, and transferring the sinonovacula constricta larvae into a built-in net cage;

and S400, respectively filling filtered and disinfected water into a high-level water tank 3, discharging the water into the built-in net cage through a water outlet pipe 4, and carrying out oxygen-filling culture in the built-in net cage.

In the step S400, each oxygen filling tube used for oxygen filling cultivation is provided with a control valve for controlling the oxygen filling amount.

S500, filling a mixed solution of golden algae and chaetoceros into a high-level water tank three times in the morning, in the middle of and at night every day, and discharging the mixed solution into a built-in net cage through a drainage pipe;

in the S500, the adding volume ratio of the golden algae to the chaetoceros in the early stage of the washbasin larvae is 3:1, and the adding volume ratio of the golden algae to the chaetoceros in the later stage of the washbasin larvae is 1: 3.

And S600, when water exchange and cleaning are needed in the culture process, opening a water drain valve 8 at the bottom of the external box body to exchange water and empty the pond until culture is completed.

In step S600, the frequency of water change is at least once a day, the frequency of pond pouring in the early stage of cultivation is once a day, and the frequency of pond pouring in the later stage of cultivation is once every two days.

This embodiment still includes the breeding device of sea water shellfish family larva phase, and it includes high flush tank 3 and a set of external box 1, each external box 1 is inside to be provided with built-in box with a net 2, 3 bottoms of high flush tank are connected with delivery pipe 6 through outlet pipe 4, be connected with a plurality of jet-propelled pipe 5 on the delivery pipe 6, jet-propelled pipe 5 sets up directly over built-in box with a net 2, be provided with water supply switch 7 on the delivery pipe 6, and each external box with a net bottom all is provided with drain valve 8.

When water is changed, the water drain valve at the bottom of the external box body is directly opened, so that the injected seawater naturally flows out to the required volume, and the waterproof valve is closed.

When the seawater is poured into the pool, the water drain valve at the bottom of the external tank body is directly opened, so that the seawater completely flows out, and the water drain valve is closed.

When water is added, the sterilized fresh seawater is directly added. When the water is poured into the pool, the valve is not closed, the water flow is used for washing the four walls of the net cage to complete the cleaning, and the water is added after the cleaning seawater is removed.

The invention can finish the drainage of a plurality of devices by one person at the same time, the water body is placed in the required volume and the valve is closed, the operation is extremely simple, and the labor amount is saved.

The built-in net cage is made of a mesh silk with a mesh size not exceeding 300 meshes, and the periphery of the built-in net cage is supported by a metal frame.

The external box body is made of PVC materials, and the water drain valve is installed at the bottom of the external box body.

According to the invention, the shellfish larvae are directly cultured in the built-in net cage, when water is changed, the water drain valve at the bottom of the external box body is directly opened to drain the water, and simultaneously, the water changing and the algae supplying are completed through the gravity of the water body of the high-level water tank, so that the damage and the loss of the impact force of high water flow to the larvae during the water outlet filtration and siphon filtration are avoided; the bottom area of the built-in net cage is larger than that of a common filter net bag, so that the damage caused by high-density extrusion can be effectively reduced; the invention can control a plurality of breeding families simultaneously, thereby greatly reducing the labor amount and saving the time; in addition, the built-in net cages can be independently used, namely the built-in net cages are placed in a pool with a large area, different net cages are cultured in the same pool, and the growth and development difference of the shellfish larvae caused by the culture environment is avoided.

The foregoing is only a partial embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.