KR20210073742A - Integrated Multi-Trophic Aquaculture for seaweeds and sea squirt - Google Patents

Abstract

By providing a method for complex culture using an ecological integrated aquaculture device that complexly nurtures seaweed and Halocynthia roretzi, it is possible to induce water quality improvement and seaweed production through seaweed culture of an upper part by complex culture based on water quality improvement of animals and plants. As Halocynthia roretzi culture at a lower part can reduce the occurrence of diseases and pollution overload that are likely to occur in animal culture through the effect of improved water quality culture, eco-friendly culture is possible. Therefore, pollution reduction, safety, and stable production and supply of safe aquatic products in aquaculture are secured to bring effects of maximizing added value of aquaculture and creating a new growth engine through future industrialization of a fishery industry.

Description

{Integrated Multi-Trophic Aquaculture for seaweeds and sea squirt}

The present invention relates to integrated multi-trophic aquaculture (IMTA) and aquaculture method, and minimizes interference between aquaculture facilities by combining a seaweed aquaculture device using a sponge and a submerged squid aquaculture facility at upper and lower depths. And it relates to a complex aquaculture method for ecologically integrated aquaculture that can maximize production and eco-friendly aquaculture by enabling tension mooring.

Aquaculture refers to the artificial raising and propagation of aquatic animals and plants such as fish and laver. However, as most of the farms are located on the coast or on land, the cultured organisms are vulnerable to red tides and infectious diseases, which makes them difficult to maintain. In particular, in the case of terrestrial aquaculture, oxygen supply, water exchange, and water temperature control are implemented to maintain stable water quality. However, there is a lot of cost and investment in manpower. In particular, high-density aquaculture on land generates an excessive amount of pollutants compared to production, and it takes a lot of time and money to treat it.

Therefore, efforts are being made to move the aquaculture space to the sea surface for eco-friendly aquaculture, and in particular, aquaculture technology using the deep sea of the open sea is suggested as an alternative. Offshore aquaculture refers to aquaculture technology that raises organisms by installing aquaculture facilities in seas that are more than 35m deep.

It is easy to maintain clean water quality by cultivating living things in the deep sea. In particular, it is possible to secure stable seawater conditions for aquaculture using deep water layers, and effective stability against external forces is also possible, so It is expected to be a new technology that can change the paradigm.

In Korea, a method to improve aquaculture productivity by solving various problems in the existing coastal aquaculture using deep water is being studied, and a representative example of this is sea squirt farming. The production of sea squirts, which was produced by dense farming mainly in the southern coast, rapidly decreased due to the deterioration of coastal water quality and a decrease in the tolerance of aquaculture organisms. Large-water aquaculture was actively carried out to control stable water temperature and water quality and production time.

The sea area where stable water quality, deep water depth, and production period can be controlled is the East Coast, and the low mortality rate (almost 0%) and the stable depth of production by controlling the production period of the stable water depth by cultivating mussels for 2 years and 8 months at a depth of about 45m The result was close to 0%.

In addition, the mortality rate of submerged aquaculture farms, in which a line is lowered from the water surface near the coast, reached 50-70% by region, and the mortality rate of submerged aquaculture farms with structures installed on the bottom of the sea floor was 10-30%, whereas the mortality rate was 10-30%. If sea squirts were cultured in this deep offshore fishery, the mortality rate could be significantly reduced compared to that of offshore farming.

Halocynthia roretzi belongs to the phyla Chordata, Urochordata, and Ascidiacea, and is located in the evolutionary path of invertebrates and vertebrates from a phylogenetic point of view.

Lobster fish belongs to a favorite food and is an aquatic animal used as raw sashimi. In Gyeongsang-do, it was called sea squirt, but recently both lobster and sea squirt have come to be used as standard words. It is widely distributed around the world and about 2300 species are known, and it is an attached marine animal that attaches to coastal rocks, shells, and bottoms of ships, and is even found in mud or sand. Taxonomically, it belongs to the phylum Cherodidae, Cherodidae, Cervidae, and Tonidae, and it is a species similar to that of vertebrates as it temporarily possesses the characteristic of vertebrates during the larval stage.

The body consists of a sac and has the characteristic of filtering and ingesting microscopic plankton and nutrients from seawater. It can be divided into a species that leads an independent life and a species that lives in a group. Sexual reproduction is common in the independent living squirrels, but the majority of the brooding squirrels living in a colony are the asexual types.

In Korea, with Jeju Island as the southern limit, it is widely distributed along the eastern and southern coasts. As a high value-added aquaculture species, it is being cultivated mainly in the southern coast and in large quantities in the southern part of the East Sea, making it a major source of income for fishermen.

The unique taste of mussels is due to amino acids such as glycine, alanine, glutamic acid, and betaine, and the unique flavor is due to unsaturated alcohol, a volatile trace component, which is a component called Cynthiol. It can be an important health food.

The larvae attach to the larvae when the larvae are placed in the water or laid on the floor made of fishing line, waste net, fiber rope and palm yarn in a place where sea squirts are abundant during the spawning season. However, this method is not preferred by farmed fishermen because the harvesting performance depends on the sea conditions at the time of harvesting.

The current method of harvesting and harvesting used by farmed fishermen is that the planting is done by installing a planting frame vertically in a tank, made by weaving palm sand made by twisting a thin rope like a thin rope using coconut shells, in a tank. After 10 to 12 months of transplantation period, a 24 mm thick and 5 to 6 m long drooping string made by twisting cloth is wound at regular intervals according to the number of attached seeds and entered into the main breeding.

Conventional broiler farming is done by the continuous multiplication method. The sea squirt submerged aquaculture device floats the floaters on the water surface, lowers the rope connecting the floaters and the twisters below the surface to a depth where sea urchins can grow, then connects them to the twister, a rope connected horizontally in a checkerboard shape, and attaches the spores vertically below it. tie the rope At this time, as the fixed rope connected to the fixed body located on the seabed is connected to the twisted yarn, the sea urchin farming apparatus can be deployed up and down in the sea. However, it is necessary to develop an aquaculture system and method that can increase productivity more as the cultivation of squash must be carried out for two years after the installation of the equipment.

Korean Patent Publication No. 2003-0091131 discloses that fishermen who are cultivating lobster fish can also cultivate dolphins in existing culture farms and farms, so that they can ensure high profits using the cold season in summer. A method is disclosed. In Korea Patent Publication No. 10-2005-0025939, natural disasters (typhoons, attachment of sessile organisms, high temperatures, etc.) Disclosed is a method for cultivating sea squirrels using a breeder with a built-in buoyancy control part that can reduce productivity and improve productivity. Domestic Registration Patent No. 10-1286706 discloses a method for producing Suha-tyeon, which is produced through the Su-ha-tyeon manufacturing step, and after removing the toxicity by impregnating the Su-ha-tyeon manufactured through the Suha-tyeon manufacturing step in seawater, stacking them alternately horizontally and vertically in a seedling tank. Shrink larvae dispersing step of dispersing the sea squirt larvae in the seedling tank where the snail larvae are placed after passing through the drooping lagoon piling step, and connecting the snail larvae to which the snail larvae are attached to the streak through the above sea larvae dispersing step. Disclosed is a method for cultivating sea squirts comprising a scapula ligation step and a harvesting step of harvesting adult sea urchins that have undergone the drooping ligament connection step. Domestic Patent No. 10-1806085 discloses a plurality of mooring devices fixedly installed on the seabed; a mooring rope connected and installed on the top of the mooring device; a seaweed cultivation device connected to the distal end of the mooring rope and installed parallel to the sea level; a rich man who is fixedly connected to the seaweed cultivation device and installed at least one at regular intervals; a mussel cultivation device connected to the lower part of the seaweed cultivation device and in which mussels are seeded in a down-down manner; Disclosed is a submerged complex aquaculture apparatus for sea cucumbers, which is connected to the lower end of the mussel cultivation apparatus and is composed of a sea cucumber unit that is deposited on the seafloor tidal flat.

Existing complex aquaculture is composed based on upper and lower organic matter circulation centered on animal culture, but the present invention maximizes production and improves production by minimizing interference between aquaculture facilities and enabling tension mooring by using plant and animal upper and lower complex aquaculture technology using large water depth. The purpose of this study is to provide a complex aquaculture method using an ecological integrated aquaculture system capable of eco-friendly aquaculture.

In order to achieve the above object, a complex aquaculture method using an ecological integrated aquaculture apparatus according to an embodiment of the present invention includes: a culture preparation step (A) of setting a sea area in which the ecological integrated aquaculture apparatus is to be installed and installing the ecological integrated aquaculture apparatus; A step (B) of attaching the larvae to the seedling device in the seedling tank in which the hatched larvae are stocked, and then connecting the larvae to the breeding rope of the integrated ecological aquaculture system of step (A) above (B); After step (b), the installation of the algae cultivating rope starts when the water temperature drops below 22 ℃ and is carried out until February of the following year when the water temperature reaches the lowest (c); After the step (c), it may consist of a complex culturing step (d) of complexly cultivating mussels and seaweeds until the third year based on the step (b). Step (b) above may be carried out in April or June of the first year

The ecological integrated aquaculture apparatus of step (a) includes: a plurality of mooring apparatuses fixedly installed on the seabed of the set sea area; a mooring rope connected to one end of the mooring device and having the other end connected to a positive rope; Yangcheng Rope, which is installed horizontally in the sea with one end and both ends of the upper mooring rope connected; At least one seedling device is installed at a predetermined interval in a descending manner on the growling rope; a seaweed fixed rope connected to the mooring rope and the positive rope; a seaweed cultivation device horizontally connected to the seaweed fixing rope; A plurality of buoyancy devices may be connected to the seaweed fixing rope via a corner plate.

Existing complex aquaculture is composed based on upper and lower organic matter circulation centered on animal culture, but the present invention is a complex culture based on water quality improvement of animal and plant culture using upper and lower complex aquaculture technology using large water depth. Inducing water quality improvement and algae production through the algae production, and the lower part of the aquaculture can reduce the occurrence of diseases and pollution overload that are easy to occur in animal culture through the effect of improved water quality culture, thereby reducing pollution in the aquaculture fishery by enabling eco-friendly aquaculture It has the effect of creating a new growth engine through the stable production and supply of safe, safe and secure aquatic products, maximization of added value of aquaculture, and future industrialization of the fishery industry.

1 shows a schematic diagram of a complex aquaculture method using the ecological integrated aquaculture apparatus of the present invention.
Figure 2 shows a plan view of the ecological integrated aquaculture apparatus of the present invention.
Figure 3 shows a side view of the ecological integrated aquaculture apparatus of the present invention.
Figure 4 shows a front view of the ecological integrated aquaculture apparatus of the present invention.
5 shows a mooring device according to an embodiment of the present invention.
6 shows an apparatus for cultivating seaweeds of the present invention.
7 shows an enlarged view of the corner plate of the present invention.
8 shows the buoyancy device of the present invention.
9 shows an embodiment of the buoyancy device of the present invention.
10 shows the process of cultivating aquaculture organisms in the complex culture method of the present invention.

Hereinafter, it will be described in detail with reference to the drawings related to the complex aquaculture method using the integrated multi-trophic aquaculture (IMTA) apparatus of the present invention.

The term, ecologically integrated aquaculture referred to in the present invention, includes eco-friendly aquaculture technology that can prevent or reduce marine pollution caused by fish excreta and residual feed by using the food chain, and is a cultured fish species of the ecologically integrated culture according to the present invention. may consist of algae and lobster.

The seaweed variety is a large seaweed, and may target brown algae that can be cultured, and specifically, one or more kinds selected from seaweed, kelp, turmeric, wormwood, giant kelp, motherwort, rhubarb, Ecklonia, gompi, and the like.

The red herring according to the present invention may preferably be a herring that inhabits the east coast, and is very strong at low water temperature, but has weak characteristics at high temperature, and aquaculture is performed in a sea area where the water temperature from 5°C to 24°C is maintained. The spawning season is from mid-December to the end of January at 8°C to 12°C, and cultivation is carried out between April and June after seeding, and the type of facility is a submerged facility.

The natural habitat is characterized by adhering to and inhabiting places with a lot of solid matter such as bedrock or rocks on the seabed, dead sand or sunken wood and seaweed, and in addition to diatoms, large drifts, protozoa, and mollusk larvae floating in seawater, copepods or molluscs It has the same diet as shellfish and sponges.

1 shows a schematic diagram of a complex aquaculture method using the ecological integrated aquaculture apparatus of the present invention. The complex aquaculture method using the integrated ecological aquaculture apparatus of the present invention includes: a culture preparation step (A) of setting a sea area to install the ecological integrated aquaculture apparatus and installing the ecological integrated aquaculture apparatus of the present invention; A step (B) of attaching the larvae to the seedling device in the larvae stocked with the hatched larvae, and then connecting the larvae to the breeding rope of the integrated ecological aquaculture system of step (A) above (B); After step (b), the installation of a seaweed-positive rope is installed until February of the following year when the water temperature is the lowest when the water temperature drops below 22℃ (C); After the step (c), a complex cultivation step (d) of complexly cultivating mussels and seaweeds up to the third year based on the step (b) may be performed.

(A) Form preparation stage

The aquaculture preparation step (A) of the present invention includes the steps of setting the sea area in which the ecological integrated aquaculture apparatus of the present invention is to be installed and installing the ecological integrated aquaculture apparatus of the present invention. The sea area setting step is to search for an appropriate depth of water for the cultured organisms according to the present invention to inhabit, and the vertical distance between the water surface and the seabed may be 15 m or more. Preferably, the sea area is suitable for a place where the water temperature is maintained in the range of 5 to 24° C. throughout the year, the inflow of fresh water is small, the communication of algae is good, and there is no influence of wind and waves.

Figure 2 shows a plan view of the ecological integrated aquaculture apparatus of the present invention, Figure 3 shows a side view, Figure 4 shows a front view. The ecological integrated aquaculture apparatus of the present invention comprises: a plurality of mooring devices 10 fixedly installed on the seabed of the set sea area; a mooring rope 20 connected to one end of the mooring device and having the other end connected to a positive rope; The upper mooring rope is connected to one end and both ends to be installed horizontally in the sea, the sound rope 30; At least one seedling device 40 is installed at a predetermined interval in a descending manner on the growling rope; Seaweed fixed rope 50 connected to the mooring rope and the positive rope and mooring rope; a seaweed cultivating device 60 horizontally connected to the seaweed fixing rope; The seaweed fixing rope may be formed by connecting a plurality of buoyancy devices 70 through a corner plate.

In a configuration in which a plurality of buoyancy devices 70 are connected via a corner plate, a seaweed water depth rope 55 is connected between the upper part and the corner plate, and a deep algae rope 45 is connected between the lower part of the corner plate and the squid culture device. It is connected to support the aquaculture device.

The mooring device 10 of the present invention may be formed in a mooring anchor structure or mooring block structure generally installed in a submerged seedling facility, and may be installed in a plurality at the bottom of the sea floor. 5 shows a mooring device according to an embodiment of the present invention. The mooring device according to the embodiment of the present invention is a gravity anchor and is installed to support using a stock anchor to minimize left and right drag during gravity. The connection between the stock anchor and the gravity anchor may be made through a chain. The mooring device plays a role in fixing the sound rope, which will be described later, so that it can be deployed in the horizontal direction at a certain depth.

The mooring rope 20 of the present invention is fixed so that one end is connected to the mooring device and the other end is connected to the positive rope so that the positive rope can be deployed horizontally at a certain depth.

Both ends of the positive rope 30 of the present invention are connected to the other end of the mooring rope and fixed so as to be deployed at a predetermined depth. The depth of the water at which the crocodile positive rope is deployed may be 15 to 45 m based on the water surface, which is the actual water depth in which the roar squirrel inhabits. The sound harvesting device 40 of the present invention is installed in the form of a rope in which the rattlesnake seedlings are harvested, and a plurality of them are installed on the growling rope in a down-down manner.

A high-pressure element 31 is installed at the connection part of the mooring rope and the mooring rope, so that the tangle of the mooring system when the facility is shaken or the interference with the seaweed cultivation device installed at the top can be minimized.

6 shows an apparatus for cultivating seaweeds of the present invention. In the seaweed cultivation apparatus 60 of the present invention, main ropes 61 are connected in the horizontal and vertical directions to form a side line of a rectangular frame, and one or more main ropes are installed in the side line horizontally with either side of the side line. and one or more seaweed-positive ropes 62 are installed in a direction perpendicular to the main rope.

At both ends of the seaweed positive rope, a knot is formed in the form of an ice platter, and a plurality of rods may be installed in the main rope. The length of the seaweed-positive rope can be determined by the interval between the main ropes installed inside the side line, and the fixing of the seaweed-positive rope can form a plurality of seaweed-positive ropes by inserting a rod into an ice-plice knot. In addition, the seaweed positive rope and the main rope may be formed to be more easily detachable and fixed through a swivel structure.

The seaweed cultivating device is connected to the seaweed fixing rope 50 which is connected to the seaweed cultivating rope. The seaweed fixing rope can fix the seaweed cultivating device and adjust the depth of the seaweed cultivating device at the same time.

7 shows an enlarged view of the corner plate of the present invention. A connector is formed so that one or more corner plates 63 can be installed on the seaweed fixing rope of the present invention. The corner plate of the present invention has a structure in which a connection hole is formed in a metal plate of high weight and high strength, and serves as a connection point for the algae fixing rope, and is installed in connection with a buoyancy device at the upper part. The connection with the seaweed fixing rope and the buoyancy device may be fixed by selecting one or more of a thimble, an ice flake, a shackle, and the like.

According to the present invention, in order to minimize interference between the aquaculture facilities in a vertical complex culture of seaweed and scallop, tension mooring of the upper and lower facilities is possible by arranging the facilities so that vertical crossings do not occur and connecting the upper and lower facilities through a corner plate. The tension mooring can secure effective stability against external forces such as swell waves and ocean currents, and at the same time reduce the fluctuations of the facilities in normal times, thereby reducing the loss of aquaculture organisms, which is the main cause of the decrease in productivity of squash aquaculture. In addition, it is possible to improve the productivity of aquaculture by improving facility stability and seawater communication through the above tension.

8 shows a buoyancy device 70 of the present invention. The buoyancy device may consist of a buoyancy rope and a buoy. On the side of the buoyancy rope, one or more fixtures are spaced apart in the up and down directions at regular intervals, and the float is installed at the top, and the lower part is connected to the corner plate. A buoyancy rope 55 is connected between the upper buoyancy and the corner plate, and a buoyancy rope 45 is connected between the lower corner of the corner plate and the rumble culture device to support the rumble culture device. The fixture formed on the side of the buoyancy rope may be formed in a thimble shape or a splice shape as shown in FIG. 9 .

In general, in seaweed culture, seaweeds must be able to secure the surface area of the sea surface for photosynthesis and growth, and securing the surface area of the sea surface can pose a risk to the safety of facilities and cultured organisms by exposure to the indeterminate external force environment of the sea area. .

In addition, most of the seaweed culture is carried out in the South Sea or the West Coast. Due to the high turbidity, the seaweed needs to be close to the sea level to be cultured. Adjustable. Therefore, when the existing seaweed culture equipment is installed, there may be a problem in the growth of cultured seaweeds due to strong sunlight in high-transparency waters such as the East Coast.

Accordingly, the seaweed fixing rope of the present invention can change the connection position of the ice flake of the buoyancy rope 55. By controlling the installation depth of the seaweed cultivation device according to the fixed position, the solar transmittance according to the characteristics of the seawater can be grasped and seaweed. There is an effect that can be adjusted to the appropriate water depth for growth.

(B) Steps to install the seedling device

The step (b) of the present invention includes the steps of attaching the larvae to the seedling device in the seedling tank in which the hatched larvae are stocked, and then installing the larvae on the growing rope of the integrated ecological aquaculture system of step (a). may include The stage of the present invention is suitably carried out in April to June of the first year.

The seedling of the larvae may include a method of naturally harvesting by dropping a seedling machine to a place where there are many wild mothers during the spawning season, and a method of artificially harvesting in a water tank to obtain a healthy mature mother. The hatched tadpole-type larvae swim vigorously in the water, but lose their swimming ability as the tail part is gradually absorbed and attach to the solid at the bottom. At this time, a seedling device is put in to attach the larvae.

It is appropriate to prepare the seedling device several months before seeding and to use it after immersing it in seawater several times to completely elute the toxicity of the material. As seedling materials, palmsa, guraron, old net, grapevine, environ, saran, PE rope It may be one or more selected from the like. After that, when it is recognized that the larvae are fixed in the seedling device, the larvae are installed in the larvae that are installed in the step (A) above. The installation depth of the seedling device is 15 m or more, preferably 15 to 50 m.

(C) Seaweed cultivation rope installation stage

The installation step (c) of the seaweed cultivation device of the present invention is appropriate to start installing the seaweed cultivation rope at a time when the water temperature drops below 22℃ after the step (b) and to carry out until February of the following year when the lowest water temperature is reached. . Preferably, it can be carried out from October to March. This is to ensure that the excrement of the squirrel can be supplied as an organic material for cultivating seaweeds.

The seaweed breeding rope is a single seaweed seedling rope consisting of a seed cord grafted with seaweed seedlings and a mother cord attached to the seed cord to provide a substrate for young leaves to grow. and may be installed to deploy horizontally in the sea parallel to the sea level.

It is appropriate that the seaweed transplanted to the transverse line grows to a size of 5 to 10 mm fronds. The mother cord is a substrate that can be firmly epiphytic by growing young leaves attached to the transverse cord to form a twig-shaped attachment period, and can be formed of synthetic fiber materials commonly used in seaweed culture. The installation depth of the seaweed positive rope according to the present invention may be 1 to 10 m.

(D) Complex training stage

The complex cultivating step (d) of the present invention may include a step of complex cultivating mussels and seaweeds until the third year based on the implementation of the step (b). Figure 10 shows the step-by-step aquaculture organism input process showing the complex positive step of the present invention. This is because it usually takes two years from seeding to nurturing and harvesting from seedling, and for seaweed, it can be said that the temporal growth characteristics of culturing from October to February of the year are taken into consideration.

The aquaculture method using the ecological integrated aquaculture apparatus of the present invention can produce algae through photosynthesis and nutrient absorption from seawater by making the seedling breeding nets or breeding lines fall into the sea surface, so there is no feeding and eco-friendly effect.

When the present invention is carried out in the East Sea, the seawater of the East Sea contains organic matter that is insufficient for seaweed to grow. In addition, the apparatus of the present invention can prevent damage to the apparatus by providing durability to withstand the occurrence of long-period high waves caused by the east sea breeze of the east coast.

In addition, the complex aquaculture of seaweed and mussel can improve the environment of the farm because sufficient oxygen can be supplied due to the improvement of the water quality and carbon assimilation effect. This income generation is possible, which has the effect of economic feasibility and environmental improvement.

The present invention can perform aquaculture of seaweed and scallops in a complex manner, so spatially, it is possible to combine the upper and lower spatial aquaculture of the aquaculture facility by using the large depth of water and the water temperature characteristics of each layer, and in terms of time, the facility can be opened from May to June every year. It has industrial applicability as it promotes profit creation for related fishermen by maximizing spatial efficiency by harvesting seaweeds that are temporarily cultured while cultivating roarfish for about two years after installation.

10: mooring device
20: mooring rope
30: positive rope 31: high pressure rich
40: rumble seedling device 45: rumble stalk line
50: seaweed fixed rope 55: buoyancy rope
60: seaweed cultivation device
61: main rope 62: seaweed positive rope 63: corner plate
70: buoyancy device

Claims (5)

a plurality of mooring devices fixedly installed on the seabed of the set sea area;
a mooring rope connected to one end of the mooring device and having the other end connected to a positive rope;
a positive rope connected to one end and both ends of the mooring rope and installed horizontally in the sea;
At least one seedling device is installed at a predetermined interval spaced apart from each other in a descending manner on the growling rope;
a seaweed fixed rope connected to the mooring rope and the positive rope;
a seaweed cultivation device horizontally connected to the seaweed fixing rope;
A plurality of buoyancy devices are connected to the seaweed fixing rope through a corner plate as a medium, and the ecological integrated aquaculture apparatus
According to claim 1, wherein the buoyancy device is made of a buoyancy rope and a buoy, and one or more fixtures are spaced apart from each other in the upper and lower directions on the side of the buoyancy rope, and a float is installed at the uppermost end, and a corner plate is connected to the lower end. Ecological integrated aquaculture system
According to claim 1, wherein the seaweed cultivation apparatus is connected to the main rope in the horizontal and vertical directions to form a side line of a square frame, and one or more main ropes are installed in the side line horizontally with any one side of the side line, Ecological integrated aquaculture apparatus in which one or more algae cultivation ropes are installed in a direction perpendicular to the main rope
Step (A) of determining the sea area for ecologically integrated aquaculture and preparing for the installation of ecologically integrated aquaculture equipment;
After attaching the larvae to the seedling device in the seedling tank in which the hatched larvae are stocked, the larvae are connected to the larvae breeding rope of the integrated ecological aquaculture system in step (A) from April to June I);
After step (b), the installation of a seaweed-cultivating rope is started at a time when the water temperature falls below 22°C, and the rope installation is performed until February of the following year (c);
A complex aquaculture method using an ecological integrated aquaculture system, which consists of a complex cultivating step (d) of complexly cultivating mussels and algae until the third year based on the step (b) after passing through step (c).
[Claim 5] The method according to claim 4, wherein the installation water depth of the seaweed fixing rope is 1 to 10 m, and the installation depth of the seedling device is 15 to 50 m.

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