JP2021097613A - Method for manufacturing seeding body and method for producing algae - Google Patents

Abstract

To provide a method for manufacturing a seeding body in which a seeding body can be easily manufactured.SOLUTION: A method for manufacturing a seeding body in which a seeding body, which is formed by culturing spores of Algae being attached to a spore-attaching body, is manufactured. Algae is Eckloniopsis radicosa, and the method comprises a spore attaching process in which a spore feeder which feeds spores of Eckloniopsis radicosa into water is arranged in water, and spores fed into the water are attached to the spore-attaching body. The spore feeder is equipped with a stem and a holdfast part which are left after removing a leaf part from Eckloniopsis radicosa, and arranged in the sea for a predetermined period, and the temperature of the sea in the period when the stem and the holdfast part have been arranged in the sea rises by 5°C or more from temperature immediately after the stem and the holdfast part were arranged in the sea.SELECTED DRAWING: None

Description

The present invention relates to a method for producing a seed body formed by adhering and culturing algae spores to a spore adhering body, and a method for producing algae using the seed body produced by the method.

Generally, when algae are cultivated in seawater or fresh water, seeds produced by culturing algae spores attached to spore adhering bodies are used. Examples of the spore adhering body include a plate-shaped member made of concrete, synthetic resin, ceramics, etc., or a thread-shaped member (including generally called rope-shaped and string-shaped members) made of synthetic resin, etc. Is used. Algae are cultivated by installing such species in the sea.

For example, when culturing kelp, wakame seaweed, etc., spores are attached to filamentous spore adhering bodies and cultured in a water tank on land for a certain period of time to produce seed threads (seed bodies). Then, by fixing such seed yarn to a plate material and installing it in the sea, kelp and wakame seaweed are cultivated (see Patent Document 1).

When producing a species as described above, a spore feeder that supplies spores to be attached to the spore adhering body into water is required. Here, many algae have a leaf part, a stem part, and a false root part, and dissipate spores from the leaf part. For this reason, algae having leaves that can dissipate spores are used as spore donors.
Then, in the method of producing a seed body, an algae (spore feeder) having leaves in a state where spores can be released is placed in a water tank to dissipate the spores in water, and a spore adhering substance (for example, filamentous substance) is dissolved in the water. (Member) is placed, and spores are attached to the spore adhering body.

Japanese Unexamined Patent Publication No. 2010-35420

Here, since the leaves of algae are usually recovered as commercial products, it is difficult to obtain a spore supplier from the cultivated algae. Therefore, when producing a seed, it is necessary to newly collect algae that grow naturally in water and use them as a spore feeder.
However, the work of collecting algae in water requires specialization in the growing state of algae, and there is a time limit, which requires a great deal of labor. Therefore, it is not easy to newly collect algae serving as a spore feeder to prepare a seed.

Therefore, it is an object of the present invention to provide a method for producing a seed body, which can easily produce a seed body, and a method for producing algae using the seed body produced by the production method.

The method for producing a seed according to the present invention is a method for producing a seed formed by adhering and culturing algae spores to a spore adhering body, and the alga is Antokume. A spore feeder that supplies spores of Antokume into water is placed in water, and the spore feeder is provided with a spore attachment step that attaches the spores supplied in the water to the spore adhering body. The spores and spores remaining after being removed are provided with spores and spores that have been placed in the sea for a predetermined period of time, and the temperature in the sea during the period in which the spores and spores are placed in the sea is the said. The temperature rises by 5 ° C or more from the temperature immediately after the spores and spores are placed in the sea.

According to such a configuration, a spore feeder for supplying spores of Antokume into water is arranged in water, and the spore attachment step of attaching the spores supplied in the water to the spore adhering body is provided. In addition, the spore feeder includes stems and roots that remain after the leaves are removed from Antokume and are placed in the sea for a predetermined period of time.
Here, Antokume can dissipate a relatively large amount of spores not only from the leaf part but also from the stem part and the false root part. Therefore, the temperature in the sea during the period when the stem and the false root are placed in the sea rises within the above range from the temperature immediately after the stem and the false root are placed in the sea, so that the stem and the false root rise. Can be grown in a state where spores can be dissipated. As a result, the stem and false roots can be used as at least a part of the spore feeder, so that it is not necessary to newly collect the antokume to be used as the spore feeder from the water, and the seed can be easily prepared. be able to.

The spore donor is a stem and a false root that remains after the leaf is removed from Antokume, and is a stem and a false root that have been placed in the sea for a period of 6 months to 8 months after the leaf is removed. The temperature in the sea during the period when the stem and the false root are placed in the sea is 15 ° C. or higher and 17 ° C or lower immediately after the stem and the false root are placed in the sea. It will be 22 ° C or more and 29 ° C or less in the period of 4 months or more and 6 months or less after the stem and false roots are placed, and 19 in the period of 7 months or more and 8 months or less after the stems and false roots are placed in the sea. It is preferably ° C. or higher and 26 ° C. or lower.

According to such a configuration, the spore feeder is the stem and the false root remaining after the leaf is removed from the antoque, and the stem and the temporary root are placed in the sea for the above period after the leaf is removed. It has a root. The temperature in the sea during the period when the stem and the false root are placed in the sea is in the above range.
As a result, the stem and the false root are more reliably grown in a state where the spores can be dissipated, so that the spores can be effectively supplied from the spore feeder (stem and false root).

The spore feeder may include an algae adhering substance to which the antokume adheres, and a stem part and a false root part remaining by removing the leaf part from the algae adhering body attached to the algae adhering body.

According to such a configuration, the spore feeder includes an algae adhering substance to which the antokume adheres, and a stem part and a false root part remaining by removing the leaf part from the algae adhering body attached to the algae adhering body. As a result, in the spore attachment step, the spore feeder becomes difficult to move in water, so that the spore attachment step can be performed satisfactorily.

The spore adhering body is preferably formed in the form of filaments.

According to such a configuration, the spore adhering body is formed in a filamentous shape, so that the spores are easily attached to the spore adhering body in the spore adhering step. In addition, since the spore adhering body can be arranged in an arbitrary shape when performing the spore adhering step, a filamentous seed can be more easily produced.

The algae adhering material preferably includes a spore adhering body that forms a part of the seed body and a fixing member to which the seed body is fixed.

According to such a configuration, the algae adhering material includes a spore adhering body constituting the seed body and a fixing member for fixing the seed body.
This facilitates the growth of algae at the portion of the species fixed to the fixing member. Therefore, a portion used as a spore feeder can be efficiently obtained.

An algae growing step for growing anthokume attached to the algae adhering substance, a recovery step for collecting the algae growing antokume together with the algae adhering substance, and removing leaves from the antokume attached to the collected algae adhering substance. It is preferable to further include a spore feeder preparation step of arranging the remaining stem portion and false root portion in the sea to prepare a spore feeder.

According to such a configuration, an algae growing step for growing anthokume attached to the algae adhering material, a recovery step for collecting the antokume grown in the algae growing step together with the algae adhering body, and adhering to the collected algae adhering body. The algae feeder preparation step of arranging the remaining stems and false roots by removing the leaves from the algae to prepare a spore feeder is further provided.
This makes it possible to prepare a spore feeder while collecting the leaves as a commercial product from the antokume attached to the algae adhering material.

In the method for producing algae according to the present invention, the algae produced by the above-mentioned method for producing algae are placed in water, and the spore adhering matter is used as at least a part of the algae adhering substance to which the algae adherent adheres. It includes a growing step, a collecting step of collecting the antokume grown in the algae growing step together with the algae adhering substance, and a collecting step of collecting a leaf part from the antokume adhering to the collected algae adhering substance.

According to such a configuration, the seeds prepared by any of the above-mentioned methods for producing seeds are placed in water, and the spore adhering matter is used as at least a part of the algae adhering matter to which the anthokume adheres to grow the algae. It includes a step, a recovery step of collecting the antoque grown in the algae growing step together with the algae adhering substance, and a collecting step of collecting the leaf part from the algae adhering to the collected algae adhering substance. As a result, it is possible to use the portion other than the leaf portion as a spore feeder while collecting the leaf portion as a commercial product or the like.

In the algae growing step, a plurality of algae adhering substances are placed in water at intervals in the vertical direction, and in the recovery step, anthokume attached to the algae adhering substance at least in the shallowest water depth is collected together with the algae adhering substance and recovered. It is preferable to move the algae adhering material at a position deeper than the algae adhering material to a position shallower than the water depth.

According to such a configuration, in the algae growing step, a plurality of algae adhering bodies are arranged at intervals in the vertical direction. In the recovery step, at least the antokume attached to the algae deposits at the shallowest water depth is recovered together with the algae deposits, and the algae deposits deeper than the recovered algae deposits are placed at a shallow water depth. Moving.
As a result, it is possible to collect the antokume that has grown in the shallow water, and to move the algae adhering matter in the deep water to the shallow position to promote the growth of the antokume. Therefore, it is possible to more efficiently obtain a leaf portion collected as a commercial product and a portion other than the leaf portion used as a spore feeder.

As described above, according to the present invention, it is provided a method for producing a seed body that can easily produce a seed body, and a method for producing algae using the seed body produced by the production method. Can be done.

The schematic diagram which showed the seed body in the method of producing the seed body which concerns on one Embodiment of this invention. The schematic diagram which shows the state which algae adhered to the algae adherent by the method of producing the seed body which concerns on the same embodiment. (A) is a schematic view showing a state in which the seed is fixed to the fixing member used in the method for producing the seed according to the same embodiment, and (b) is the I-I cross section of (a) and is fixed. The figure which showed only the cross section of a member. The schematic diagram which showed the algae growing process in the method of producing a species which concerns on the same embodiment. The schematic diagram which showed the spore feeder in the method of producing the seed body which concerns on the same embodiment. The schematic diagram which showed the spore attachment process in the method of producing a seed body which concerns on the same embodiment.

Hereinafter, embodiments of the present invention will be described with reference to FIGS. 1 to 6.

As shown in FIG. 1, the method for producing a seed according to the present embodiment is to prepare a seed 10 formed by culturing algae spores attached to the spore adhering body 10a. That is, the seed body 10 includes a spore adhering body 10a and a germinated body 10b obtained by culturing spores adhering to the spore adhering body 10a. In the present embodiment, the spore adhering body 10a is formed in a filamentous shape (including a rope-shaped or string-shaped member). Therefore, in the present embodiment, the seed body 10 is also referred to as a seed yarn 100.

The method for producing a species according to the present embodiment includes an algae growing step for growing algae. As shown in FIG. 2, the algae growing step grows algae X in a state of being attached to the algae adhering body 20. The algae X includes a leaf portion X1, a stem portion X2, and a false root portion X3. In addition, the algae X is capable of releasing spores from at least one of the stem portion X2 and the false root portion X3. Such algae X is Antokume.

The algae adhering body 20 includes a spore adhering body 10a forming a part of the seed body 10 (seed thread 100) and a fixing member 21 to which the seed body 10 (seed thread 100) is fixed. In the present embodiment, as shown in FIGS. 3A and 3B, the fixing member 21 is provided on one surface of the plate-shaped main body 21a formed in a plate shape and the plate-shaped main body 21a. A plurality of projecting portions 21b to be formed and a penetrating portion 21c penetrating the plate-shaped main body portion 21a are provided. Then, the seed thread 100 is fixed to the fixing member 21 by hanging the seed thread 100 around the plurality of protruding portions 21b. At this time, it is preferable to hang the seed yarn 100 around the fixing member 21 so that the distance between the hung seed yarns 100 is relatively large at 1 cm or more. The size of the plate-shaped fixing member is not particularly limited, and examples thereof include those having a size of 60 mm × 200 mm in a plan view.

Further, in the algae growing step, as shown in FIG. 4, a plurality of (for example, two or more) algae adhering bodies 20 are arranged in water at intervals in the vertical direction (for example, at intervals of 15 cm to 40 cm). Specifically, the algae adhering bodies 20 are connected to each other through the rope material Y through the penetrating portion 21c of the fixing member 21 forming a part of each algae adhering body 20. Further, a weight Z is attached to the lower end of the rope member Y. Further, the upper end portion of the rope member Y is connected to a member (not shown) near the water surface such as a raft. As a result, since the plurality of algae adhering bodies 20 are arranged in the water at intervals in the vertical direction, the algae X can be grown at different positions (water depth) in the vertical direction in the water. The algae growing step is preferably carried out near the surface of the sunny water. Further, in the algae growing step, the period for arranging the seed body 10 (seed yarn 100) in water is not particularly limited, and is preferably about 60 days to 150 days, for example.

In addition, the method for producing a species according to the present embodiment includes a recovery step of recovering the alga X grown in the algae growing step together with the algae adhering body 20. In the recovery step, the algae X adhering to the algae adhering body 20 at the shallowest water depth is recovered together with the algae adhering body 20. Further, in the recovery step, the algae adhering body 20 at a position deeper than the recovered algae adhering body 20 is moved to a position shallower in water depth. The time for performing the recovery step is not particularly limited, and it is preferable to appropriately select it according to the growing condition of algae. For example, when the algae are Antokume, it is preferably from March to May. The size of the algae when the recovery step is performed is not particularly limited, and for example, the total length is preferably 15 cm or more. The total length of the algae is the longest length from the contact position with the algae adhering body 20 in the temporary root portion X3.

Further, in the method for producing a seed body according to the present embodiment, the stem portion X2 and the false root portion X3 remaining by removing the leaf portion X1 from the algae X recovered in the recovery step are arranged in the sea for a predetermined period, and FIG. The spore feeder preparation step for producing the spore feeder 30 shown is provided. The temperature in the sea during the period in which the stem portion X2 and the false root portion X3 are placed in the sea rises by 5 ° C. or more from the temperature immediately after the stem portion X2 and the false root portion X3 are placed in the sea.
The period for arranging the stem portion X2 and the false root portion X3 in the sea is a period of 6 months or more and 8 months or less after the leaf portion X1 is removed from the algae X. Further, the temperature in the sea during the period when the stem portion X2 and the temporary root portion X3 are placed in the sea is 15 ° C. or higher and 17 ° C. or lower immediately after the stem portion X2 and the temporary root portion X3 are placed in the sea. During the period of 4 months or more and 6 months or less after the stem X2 and the temporary root X3 were placed in the sea, the temperature became 22 ° C or more and 29 ° C or less, and 7 months or more and 8 months or more after the stem X2 and the temporary root X3 were placed in the sea. It will be 19 ° C or higher and 26 ° C or lower in a period of not more than a month. That is, the spore feeder 30 includes a stem portion X2 and a false root portion X3 remaining by removing the leaf portion X1 from the algae X, and the stem portion X2 and the false root portion X3 are placed in the sea in the above temperature environment for the above period. It is arranged.
The temperature in the sea is an arithmetic mean value (average daily water temperature) based on each water temperature obtained by measuring the water temperature at a depth of 7 m every hour from 0:00 on the measurement day for 24 hours.

The spore feeder 30 includes an algae adhering body 20 to which the algae X is attached, and a stem part X2 and a false root part X3 remaining by removing the leaf part X1 from the algae part X adhering to the algae adhering body 20. The spore feeder 30 may be used in the spore attachment step described later immediately after preparation, or may be used in the spore attachment step described later after being stored in a predetermined environment. The method for preserving the spore feeder 30 is not particularly limited, and examples thereof include a method for preserving the spore feeder 30 in water (specifically, in the sea or in a water tank in which seawater is circulated). Be done. In particular, in order to easily confirm the ascus plaque described later, it is preferable to store the spore feeder 30 in a water tank in which water such as seawater is circulated. As described above, when the spore feeder 30 is stored in water, it is preferable to use the spore feeder 30 after drying it in the shade for a predetermined time (for example, about 1 hour) when performing the spore attachment step described later. , Can be used without drying in the shade.

Further, as shown in FIG. 6, the method for producing a seed according to the present embodiment includes a spore attachment step of supplying spores of algae X into water from a spore feeder 30 and attaching the spores to the spore adhering body 10a. .. In the spore attachment step, it is preferable to use the spore feeder 30 whose presence of ascus plaques has been confirmed. Since the algae X is Antokume, the spore attachment step is preferably performed around November (a time when spores are easily released from the stem portion X2 and the false root portion X3 of Antokume). Further, in the spore attachment step, a step of arranging the spore feeder 30 in the water of the water tank S to supply the spores into the water and a step of arranging the spore attacher 10a in the water to attach the spores to the spore attacher 10a. And. When arranging the spore adhering body 10a in water, it is preferable to confirm with a microscope or the like that the spores have been released into the water from the spore feeder 30. In the spore attachment step, the step of arranging the spore feeder 30 in water and the step of arranging the spore attacher 10a in water may be performed at the same time, one of which is performed first and the other of which is later. You may go. Further, the spore attachment step may be repeated a plurality of times by replacing the spore feeder 30. Then, by culturing the spores attached to the spore adhering body 10a, the seed body 10 (seed thread 100) is formed. The environment for culturing spores is not particularly limited, and examples thereof include the sea and a water tank in which seawater circulates. The period for culturing the spores is not particularly limited, and is preferably about 60 to 150 days because the algae X is Antokume.

The seed body 10 (seed yarn 100) produced by the method for producing a seed body according to the present embodiment can be used in the method for producing algae. In such a method for producing algae, the above-mentioned algae growing step is performed using the seed body 10 (seed yarn 100) produced by the above-mentioned method for producing the seed body, and then the above-mentioned recovery step is performed to carry out the above-mentioned recovery step. A collection step is performed in which the algae adhering body 20 to which is attached is collected, and the leaf part X1 is collected from the algae X adhering to the collected algae adhering body 20, leaving the stem part X2 and the false root part X3.

As described above, the method for producing a species and the method for producing algae according to the present invention can easily produce a species.

That is, a spore attachment step is provided in which a spore feeder 30 that supplies spores of algae X into water is placed in water, and the spores supplied in the water are attached to the spore adhering body 10a. And the algae X is Antokume. Further, the spore feeder 30 was a stem portion X2 and a false root portion X3 remaining after the leaf portion X1 was removed from the algae X, and was placed in the sea for the above period after the leaf portion X1 was removed from the algae X. It is provided with a stem portion X2 and a false root portion X3.
Here, the alga X, Antokume, can dissipate a relatively large amount of spores not only from the leaf part but also from the stem part and the false root part. Therefore, the temperature in the sea during the period in which the stem portion X2 and the false root portion X3 are placed in the sea rises within the above range from the temperature immediately after the stem portion X2 and the temporary root portion X3 are placed in the sea. The part X2 and the false root part X3 can be grown so that the spores can be dissipated. Therefore, the portion (stem portion X2 and false root portion X3) remaining when the leaf portion X1 is collected from the algae X can be used as at least a part of the spore feeder 30. As a result, it is not necessary to newly collect the algae X used as the spore feeder 30 from the water, so that the seeds can be easily produced.

The temperature in the sea during the period in which the stem portion X2 and the false root portion X3 are placed in the sea is within the above range. As a result, the stem portion X2 and the false root portion X3 are more reliably grown in a state in which the spores can be dissipated, so that the spores are effectively supplied from the spore feeder 30 (stem portion X2 and false root portion X3). be able to.

Further, the spore feeder 30 includes an algae adhering body 20 to which the algae X adheres, and a stem part X2 and a false root part X3 remaining by removing the leaf part X1 from the algae part X adhering to the algae adhering body 20. ..
This makes it difficult for the spore feeder 30 to move in water in the spore attachment step, so that the spore attachment step can be performed satisfactorily.

Further, since the spore adhering body 10a is formed in a filamentous shape, spores are easily attached to the spore adhering body 10a in the spore adhering step. Further, since the spore adhering body 10a can be arranged in an arbitrary shape when performing the spore adhering step, a filamentous seed can be more easily produced.

Further, the algae adhering body 20 includes a spore adhering body 10a constituting the seed body 10 and a fixing member 21 for fixing the seed body 10.
This facilitates the growth of algae X at the portion of the seed body 10 fixed to the fixing member 21. Therefore, a portion used as the spore feeder 30 can be efficiently obtained.

In addition, an algae growing step of growing the algae X attached to the algae adhering body 20 and a stem part X2 and a spore part X3 remaining by removing the leaf part X1 from the algae part X grown in the algae growing step are placed in the sea. It further comprises a spore feeder preparation step of arranging to prepare the spore feeder 30.
As a result, the spore feeder 30 can be produced while collecting the leaf portion X1 from the algae X attached to the algae adhering body 20 as a commercial product or the like.

Further, since the algae X is Antokume, the spore attachment step can be efficiently performed. Specifically, Antokume can dissipate a relatively large amount of spores not only from the leaf portion X1 but also from the stem portion X2 and the false root portion X3. Therefore, since the algae X is Antokume, spores can be efficiently supplied from the spore feeder 30 having the stem portion X2 and the false root portion X3. As a result, the spore attachment step can be efficiently performed.

Further, an algae growing step of arranging the seeds prepared by any of the above methods for producing seeds in water and growing algae X with the spore adhering body 10a as at least a part of the algae adhering body 20 and the algae growing. It includes a recovery step of collecting the algae X grown in the step together with the algae adhering body 20, and a collecting step of collecting the leaf portion X1 from the algae X adhering to the collected algae adhering body 20.
As a result, the leaf portion X1 can be collected as a commercial product or the like, and the portion other than the leaf portion X1 can be used as the spore feeder 30.

Further, in the algae growing step, a plurality of algae adhering bodies 20 are arranged at intervals in the vertical direction. Further, in the recovery step, the algae X adhering to the algae adhering body 20 at the shallowest water depth is recovered together with the algae adhering body 20, and the algae adhering body 20 at a position deeper than the recovered algae adhering body 20 is collected. Move to a shallow water position.
As a result, the algae X that has grown in the shallow water can be recovered, and the algae adhering body 20 in the deep water can be moved to the shallow water to promote the growth of the algae X. .. Therefore, the leaf portion X1 collected as a commercial product or the like and the portion other than the leaf portion X1 used as the spore feeder 30 can be obtained more efficiently.

The method for producing a species and the method for producing algae according to the present invention are not limited to the above-mentioned embodiments, and various changes can be made without departing from the gist of the present invention. Further, the configurations and methods of the plurality of embodiments described above may be arbitrarily adopted and combined (the configurations and methods of one embodiment may be applied to the configurations and methods of other embodiments). Of course, the configurations and methods according to the following various modification examples may be arbitrarily selected and adopted for the configurations and methods according to the above-described embodiment.

For example, in the above embodiment, the spore adhering body 10a is formed in a filamentous shape (including a rope shape and a string shape), but the present invention is not limited to this, and for example, a shape other than the filamentous shape (including a filamentous shape). For example, it may be formed in a plate shape (for example), or it may be formed by attaching a member formed in a thread shape to a member formed in another shape (for example, a plate shape). You may.

Further, in the above embodiment, the spore feeder 30 is configured to include the algae adhering body 20, the stem portion X2, and the false root portion X3, but the algae adhering body 20 may not be provided (specifically). May consist only of stem X2 and false root X3). In such a case, after removing the leaf part X1 from the algae X adhering to the algae adhering body 20, the leaf part X1 is placed in the sea for the above period, and then the stem part X2 and the false root part X3 are peeled off from the algae adhering body 20. Only the stem portion X2 and the false root portion X3 may be used as the spore feeder 30.

Further, in the above embodiment, the algae adhering body 20 is configured to include the spore adhering body 10a and the fixing member 21, but is not limited thereto. For example, when the seed body 10 is placed in water without being fixed to the fixing member 21 and the algae growing step is performed, the algae adhering body 20 may be composed only of the spore adhering body 10a. Alternatively, the spore adhering body 10a may be separated from the fixing member 21 to form the algae adhering body 20 at least on one side.

Further, in the above embodiment, the spore feeder 30 is configured to include the spore adhering body 10a and the fixing member 21, but is not limited thereto. For example, when only the spore adhering body 10a is used as the algae adhering body 20, the spore feeder 30 may be configured not to include the fixing member 21. Alternatively, when the spore adhering body 10a is separated from the fixing member 21 and only the fixing member 21 is used as the algae adhering body 20, the spore feeder 30 may be configured not to include the spore adhering body 10a. ..

Further, when the algae growing step in the above embodiment is first performed, the algae that grow naturally in water are collected, and the spores released from the algae are attached to the spore adhering body 10a to form a seed body, and the seeds are formed. The algae growing step may be carried out using the body.

10 ... seed, 10a ... spore adhering body, 10b ... germinating body, 20 ... algae adhering body, 21 ... fixing member, 21a ... plate-like body part, 21b ... protruding part, 21c ... penetrating part, 30 ... spore feeder, 100 ... seed thread, S ... water tank, X ... algae, X1 ... leaf part, X2 ... stem part, X3 ... temporary root part, Y ... rope material, Z ... weight

Claims (8)

It is a method for producing a seed body, which is formed by adhering algae spores to a spore adhering body and culturing the seed body.
The algae are Antokume,
It is equipped with a spore attachment step in which a spore feeder that supplies spores of Antokume into water is placed in water, and the spores supplied in the water are attached to the spore adhering body.
The spore donor is a stem and a false root that remains after the leaves are removed from the antoque, and includes a stem and a false root that have been placed in the sea for a predetermined period of time.
A method for producing a seed body in which the temperature in the sea during the period in which the stem and the false root are placed in the sea rises by 5 ° C. or more from the temperature immediately after the stem and the false root are placed in the sea. The spore feeders are the stems and false roots that remain after the leaves are removed from the antokume, and the stems and temporary roots that are placed in the sea for a period of 6 months to 8 months after the leaves are removed from the antokume. It has a root and
The temperature in the sea during the period when the stem and the false root are placed in the sea is 15 ° C. or higher and 17 ° C or lower immediately after the stem and the false root are placed in the sea, and the stem and the temporary root are placed in the sea. The temperature will be 22 ° C or higher and 29 ° C or lower during the period of 4 months or more and 6 months or less after the root is placed, and 19 ° C or higher and 26 ° C during the period of 7 months or more and 8 months or less after the stem and false roots are placed in the sea. The method for producing a seed according to claim 1, which is as follows. The seed body according to claim 1 or 2, wherein the spore feeder includes an algae adhering substance to which the anthracnose adheres, and a stem portion and a false root portion remaining by removing the leaf portion from the algae adhering body attached to the algae adhering body. How to make. The method for producing a seed according to any one of claims 1 to 3, wherein the spore adhering body is formed in a filamentous form. The method for producing a seed body according to claim 3 or 4, wherein the algae adhering body includes a spore adhering body forming a part of the seed body and a fixing member to which the seed body is fixed. By the algae growing step of growing the algae attached to the algae adhering material, the recovery step of collecting the algae grown in the algae growing step together with the algae adhering material, and removing the leaves from the antokume collected in the collecting step. The method for producing a species according to any one of claims 3 to 5, further comprising a spore feeder producing step of arranging the remaining stem portion and false root portion in the sea to prepare a spore feeder. The seeds prepared by the method for producing seeds according to any one of claims 1 to 6 are placed in water, and the spore adhering matter is grown as at least a part of the algae adhering matter to which the anthokume adheres. A method for producing algae, comprising: an algae growing step, a recovery step of collecting the algae grown in the algae growing step together with an algae adhering substance, and a collecting step of collecting a leaf part from the collected algae adhering substance. In the algae growing process, a plurality of algae adhering bodies are placed in water at intervals in the vertical direction.
In the recovery process, at least the algae adherents attached to the shallowest algae deposits are recovered together with the algae deposits, and the algae deposits deeper than the recovered algae deposits are moved to a shallower water depth. The method for producing algae according to claim 7.

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