JP5800390B2 - Coral breeding device and coral breeding method - Google Patents

Coral breeding device and coral breeding method Download PDF

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JP5800390B2
JP5800390B2 JP2011279832A JP2011279832A JP5800390B2 JP 5800390 B2 JP5800390 B2 JP 5800390B2 JP 2011279832 A JP2011279832 A JP 2011279832A JP 2011279832 A JP2011279832 A JP 2011279832A JP 5800390 B2 JP5800390 B2 JP 5800390B2
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coral
flooring
base
landing
breeding
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JP2013128444A (en
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徳男 片倉
徳男 片倉
敦史 古田
敦史 古田
隆夫 住廣
隆夫 住廣
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Taisei Corp
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    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
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    • Y02A40/00Adaptation technologies in agriculture, forestry, livestock or agroalimentary production
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Description

本発明は、サンゴを増殖するための装置と、サンゴを増殖する方法に関するものである。   The present invention relates to a device for growing corals and a method for growing corals.

近年わが国ではサンゴの初期生活史に関する様々な研究が進んだ結果、サンゴの産卵、受精、着生の詳細が明らかになり、有性生殖により作られた稚サンゴによる移植が実用化されるようになった。
この手法は、既存群体(ドナー)を傷つけることなく、自然の一斉産卵を利用するため、多様な種が着生し、自然状態と同様の種構成による移植が可
能である。また、幼生を用いるため、単一の移植群体のもととなる群体(ドナー)から遺伝的に同じ個体を複数移植する場合と比べて、同一種内の遺伝的多様性も確保可能であるなど優れた点が多い移植法である
この方法には、実験室において稚サンゴを生産する方法と野外において採苗する方法等があるが、野外の場合は幼生着床のための着床具を設置するだけですみ、比較的安価に稚サンゴを生産することができる
屋外採苗のために最近開発された着床具aは図4に示すような、杯状に焼成した直径40 mm×高さ40mmくらいのセラミック製の製品である。
これを縦に重ねてケースに収め、サンゴ産卵期前に海底に設置し、幼生の着生を待つと、約1年後には肉眼ではっきりと稚サンゴが識別できるほどに成長する。
着床具aはそのまま移植種苗として使用するもので、移植時は海底にドリルで穴をあけ、着床具の下部に水中ボンドを付けて差し込む。
この着床具は軽量で大量生産が可能であり、一度に多くの着床具を設置し、幼生を着床させることができるため、大量の移植サンゴ種苗生産の可能性を持っているという特徴を備えている。
In recent years, as a result of various researches on the early life history of corals in Japan, the details of coral egg laying, fertilization, and engraftment have been clarified, and transplantation with juvenile coral produced by sexual reproduction has become practical. became.
This method uses natural spawning without damaging existing colonies (donors), so that various species can be established and transplantation with the same species structure as in the natural state is possible. In addition, since larvae are used, genetic diversity within the same species can be ensured compared to the case where multiple genetically identical individuals are transplanted from a colony (donor) that is the basis of a single transplanted colony. This method has many excellent points. This method includes the method of producing juvenile coral in the laboratory and the method of harvesting seedlings in the field. It is possible to produce juvenile coral at a relatively low cost. The recently developed flooring tool a for outdoor seedlings is 40 mm in diameter and 40 mm in height baked in a cup shape as shown in Fig. 4. It is a ceramic product of about 40mm.
When this is stacked vertically and placed in a case, placed on the seabed before the coral spawning season and waits for the larvae to settle, the juvenile coral grows to the extent that it can be clearly identified with the naked eye after about one year.
The landing tool a is used as a transplant seedling as it is. When transplanting, a hole is drilled in the seabed, and an underwater bond is attached to the lower part of the landing tool and inserted.
This flooring tool is lightweight and can be mass-produced, and since many flooring equipment can be installed at one time and larvae can be grounded, it has the potential to produce a large amount of transplanted coral seedlings It has.

特開2004−121195号公報JP 2004-121195 A

しかし前記したような特許文献1、あるいは図4記載のサンゴ増殖装置にあっては、次のような問題点がある。
<1> 素材がセラミックであるために高価である。
<2> セラミック製品の製造のために、専門の工場での生産が必要となる。
<3> 幼生が着床した着床具を増殖基盤に開けた穴に挿入して水中接着剤で接着する方法であるため、長期的な耐久性が不明である。
<4> サンゴの成長にともない、流れや波の影響を受けてセラミック製の基盤が割れてサンゴが脱落した例がある。
<5> 移植先の増殖基盤に設置するために、あらかじめ水中で穴をあける作業が必要となる。
<6> さらに移植先の増殖基盤に設置する際に、削孔した穴の中に接着剤などを使用しなければならない。
<7> 移植先の増殖基盤にあらかじめ穴をあけておくと、周囲に堆積した砂や異物、生物が穴に侵入している可能性があるので、それを除去する作業も必要となる。
However, the coral breeding apparatus described in Patent Document 1 or FIG. 4 has the following problems.
<1> Since the material is ceramic, it is expensive.
<2> For production of ceramic products, production at specialized factories is required.
<3> The long-term durability is unknown because it is a method in which a flooring tool on which a larva has landed is inserted into a hole formed in the growth base and bonded with an underwater adhesive.
<4> As coral grows, there is an example in which the coral has fallen off due to the ceramic base cracking under the influence of flow and waves.
<5> In order to install on the breeding base of the transplant destination, it is necessary to make a hole in water in advance.
<6> Furthermore, when installing on the growth base of the transplant destination, an adhesive or the like must be used in the drilled hole.
<7> If a hole is made in advance in the breeding base of the transplant destination, sand, foreign matter, and organisms that have accumulated in the surrounding area may have entered the hole. Therefore, it is necessary to remove the hole.

上記のような課題を解決するために、本発明のサンゴの増殖装置はサンゴ着床装置と、サンゴ増殖基盤とで構成し、サンゴ着床装置は、サンゴ着床基盤と着床媒体としての着床具と、抑え板により構成し、着床基盤は、基盤と支柱とより構成し、基盤は、複数本の支柱を設立させた盤体であり、着床具は、平面視で大きい面積の着床盤と、着床盤と一体であって、かつ平面視でその着床盤より小さい面積の支持部と、着床盤と支持部を貫通する貫通孔とより構成し、貫通孔の内径は、基盤に設立した支柱の外径よりも大きく形成し、抑え板は、基板に立設した支柱の間隔と同一の間隔で穴を開口してある短冊状の板であって、支柱群に設置する着床具を上から抑えて抜け出しを防止でき、かつ着床具を支柱から引き出しできるように取り付けてあり、一方、サンゴ増殖基盤は、固定盤と、固定盤に立設した支柱である増殖柱とで形成したことを特徴としたことを特徴としたものである。
また本発明のサンゴの増殖方法は、前記のサンゴ着床装置と、サンゴ増殖基盤とを使用し、サンゴ増殖基盤は、固定盤の上に増殖柱としての支柱を設立してあり、海底の所定の位置にサンゴ着床装置を設置し、サンゴ着床装置の基盤の支柱に着床具の貫通孔を通して複数の着床具を設置し、抑え板を、支柱群に設置した着床具を上から抑えて抜け出しを防止でき、かつ着床具を支柱から引き出しできるように取り付け、着床具にサンゴ幼生が着床したらその着床具を支柱から取り外し、他の海底に設置したサンゴ増殖基盤の増殖柱に、サンゴ着床装置の支柱から取り外した着床具をその貫通孔を通して設置して、サンゴの増殖を行うことを特徴としたものである。
In order to solve the above-described problems, the coral breeding device of the present invention is composed of a coral landing device and a coral breeding base, and the coral landing device is used as a coral landing base and a landing medium. and the floor tool, and more constructed clamping plates, implantation foundation, more configuration as base and support column, foundation, a board member which has established a plurality of struts, Chakuyukagu is larger area in a plan view And a support part that is integral with the flooring board and is smaller in area than the flooring board in plan view, and a through-hole that penetrates the flooring board and the support part. The inner diameter is formed larger than the outer diameter of the support column established on the base, and the holding plate is a strip-shaped plate having holes opened at the same interval as the interval of the support column erected on the substrate. Attaching so that the landing gear installed on the floor can be prevented from slipping out from above and can be pulled out of the column. There, whereas, coral growth foundation, a fixed platen, in which is characterized in that characterized in that formed in the growth column is a pillar erected on the stationary platen.
Further, the coral breeding method of the present invention uses the coral landing apparatus and the coral breeding base, and the coral breeding base has a column as a breeding column on a fixed plate, and has a predetermined seabed. The coral landing device is installed at the position of the coral landing device , multiple flooring devices are installed through the through holes of the flooring device on the base of the coral flooring device, and the restraining plate is placed on the flooring device. Attach the landing gear so that it can be pulled out from the support, and when the coral larvae have landed on the landing device, remove the landing device from the support and install the coral breeding base installed on the other seabed. It is characterized in that the coral is proliferated by installing a flooring tool removed from the column of the coral flooring device through the through-hole on the growth column.

本発明のサンゴ増殖装置と増殖方法は以上説明したようになるから次のような効果を得ることができる。
<1> 着床具をコンクリート製にしたから、セラミックのような特殊な製造装置を必要とせず、現場近くの空き地などの任意の場所での製造が可能であり、経済的である。
<2> 多くのコンクリート製の海岸構造物がその耐久性を実証しているとおり、着床具をコンクリート製とすれば破損する可能性が低く、信頼性の高いサンゴの増殖を行うことができる。
<3> あらかじめ増殖柱を設立したサンゴ増殖基盤に、サンゴ幼生が着床した着床具を挿入する構造であるから、増殖柱が破損しない限りサンゴの脱落が発生することがない。
<4> 増殖柱は、陸上において事前に固定板に溶接、ねじ込み、その他の方法で固定してあり、それを海底に沈めて使用するものである。そのために、従来のように岩盤に削孔する、内部に侵入した砂などの異物を排除する、接着剤を注入する、といった一連の作業が不要で経済的であり、かつ信頼性も高い。
Since the coral breeding apparatus and breeding method of the present invention are as described above, the following effects can be obtained.
<1> Since the flooring device is made of concrete, a special manufacturing apparatus such as ceramic is not required, and it is possible to manufacture in an arbitrary place such as a vacant land near the site, which is economical.
<2> As many coastal structures made of concrete have proven their durability, if the landing gear is made of concrete, the possibility of breakage is low and coral can be propagated with high reliability. .
<3> Since the structure is such that a coral breeding base in which a breeding column has been established in advance is inserted with a flooring tool on which coral larvae have been landed, the coral will not fall off unless the breeding column is damaged.
<4> The breeding column is fixed on the fixed plate on the land by welding, screwing, or other methods in advance, and it is used by submerging it on the seabed. Therefore, a series of operations such as drilling holes in the rock, removing foreign substances such as sand that has entered inside, and injecting an adhesive as in the past are unnecessary, economical, and highly reliable.

本発明のサンゴ増殖方法の説明図。Explanatory drawing of the coral multiplication method of this invention. 増殖方法で使用するサンゴ着床具の実施例の説明図。Explanatory drawing of the Example of the coral landing tool used with the proliferation method. 着床具を支柱に設置した状態の説明図。Explanatory drawing of the state which installed the flooring tool in the support | pillar. 従来のサンゴ着床具の実施例の説明図。Explanatory drawing of the Example of the conventional coral landing tool.

以下図面を参照にしながら本発明のサンゴ増殖装置とその方法の好適な実施の形態を詳細に説明する。   Hereinafter, preferred embodiments of a coral breeding apparatus and method of the present invention will be described in detail with reference to the drawings.

<1>全体の構成
本発明のサンゴの増殖方法は、着床工程で使用するサンゴ着床装置1と、増殖工程で使用するサンゴ増殖基盤2によって構成する。
そしてサンゴ着床装置1は、サンゴ着床基盤11と着床具12とによって構成する。
<1> Overall Configuration The coral breeding method of the present invention comprises a coral landing apparatus 1 used in the landing process and a coral breeding base 2 used in the breeding process.
The coral landing device 1 includes a coral landing base 11 and a flooring tool 12.

<2>サンゴ着床基盤
サンゴ着床基盤11は、基盤111と支柱112とより構成する。
基盤111は、複数本の支柱112を設立させた盤体であり、例えば複数本の脚を設けたテーブル状の架台を使用する。
支柱112は鋼製、合成樹脂製などの棒状体であるが、複数個の着床具12を貫通して積み上げた状態で設置することができるように、一定の長さを備えている。
<2> Coral Landing Base The coral flooring base 11 includes a base 111 and a support column 112.
The base 111 is a board body in which a plurality of support pillars 112 are established, and for example, a table-like gantry provided with a plurality of legs is used.
The support column 112 is a rod-shaped body made of steel, synthetic resin, or the like, and has a certain length so that the plurality of landing gears 12 can be installed in a stacked state.

<3>着床具(図2)
着床具12は、コンクリート製の直径数cm、厚さ数cmのブロックであり、例えば直径の異なる円盤をふたつ重ねた形状として形成する。
その場合に着床具12は、平面視で大きい面積の着床盤122と、着床盤122と一体であって、かつ平面視でその着床盤122より小さい面積の支持部123とで構成する。
さらに着床盤122と支持部123にはその中央を貫通する貫通孔121を開口ける。
この貫通孔121の内径は、基盤に設立した支柱112の外径よりも大きく形成する。
この着床具12はコンクリート製であるから、特別の工場で製造する必要はなく、型枠さえ運搬すれば、海底に設置する現場付近の空き地で簡単に製造することができる。
着床具12の着床盤122の平面部124に溝を放射状に刻むなどの凹凸を形成すれば、着床効果を向上させることができる。
さらに支持部123の側面に、貫通孔121と平行の縦方向に溝を刻むなどの凹凸を形成すれば同様の効果を得ることができる。
<3> landing gear (Figure 2)
The flooring tool 12 is a block made of concrete having a diameter of several centimeters and a thickness of several centimeters, and is formed, for example, as a shape in which two disks having different diameters are stacked.
In this case, the flooring tool 12 includes a flooring board 122 having a large area in a plan view and a support portion 123 that is integral with the flooring board 122 and has a smaller area than the flooring board 122 in a plan view. To do.
Furthermore, a through-hole 121 penetrating through the center of the landing board 122 and the support part 123 is opened.
The inner diameter of the through hole 121 is formed larger than the outer diameter of the support column 112 established on the base.
Since the flooring tool 12 is made of concrete, it is not necessary to manufacture it in a special factory, and it can be easily manufactured in a vacant area near the site to be installed on the seabed as long as the formwork is transported.
If unevenness such as grooving grooves is formed on the flat surface portion 124 of the flooring plate 122 of the flooring tool 12, the flooring effect can be improved.
Furthermore, the same effect can be obtained by forming irregularities such as a groove in the longitudinal direction parallel to the through-hole 121 on the side surface of the support portion 123.

<4>サンゴ増殖基盤
サンゴ増殖基盤2は、増殖工程で使用する装置であり、固定盤21の上に増殖柱22としての支柱を溶接して設立して形成する。
ここで「固定盤21」とは板体だけを意味するのではなく、ブロック体も含む意味である。
この増殖柱22の設立作業は、陸上で完全な管理のもとに行うことができるから、固定盤21と増殖柱22の両者は強固に一体化しており、海底に設置した場合にも転石の衝突などで破損しにくい。
増殖柱22は、サンゴ着床装置1の支柱112と同様に、着床具12の貫通孔121の内径よりも小さい外径の、鋼棒その他の棒状体である。
増殖柱22には1個の着床具12を、その貫通孔121を貫通させて設置するから、短い棒状体で構成することができる。
<4> Coral Breeding Base The coral breeding base 2 is a device used in the breeding process, and is formed by establishing a pillar as a breeding column 22 on the fixed platen 21 by welding.
Here, the “fixed platen 21” means not only a plate body but also a block body.
Since the establishment work of the growth column 22 can be performed on the land under the complete management, both the fixed platen 21 and the growth column 22 are firmly integrated, and even when installed on the seabed, there is a boulder. It is not easily damaged by a collision.
The growth column 22 is a steel rod or other rod-like body having an outer diameter smaller than the inner diameter of the through-hole 121 of the flooring tool 12, similar to the column 112 of the coral landing apparatus 1.
Since one flooring tool 12 is installed in the growth column 22 through the through-hole 121, it can be composed of a short rod-like body.

<5>サンゴ増殖方法
次に上記の装置などを利用したサンゴの増殖方法について説明する。
<5> Coral breeding method Next, a coral breeding method using the above-described apparatus will be described.

<6>準備工程
陸上において、サンゴ着床装置1の支柱112に、着床具12の貫通孔121を貫通させて設置する。
支柱112は一定の長さを備えているから、1本の支柱112に多数個の着床具12を積み重ねた状態で設置することができる。
各着床具12を、支持部123を下に、着床盤122を上にした状態で取り付けた場合に、着床盤122の下面にサンゴの幼生が着床する。
あるいは支持部123と着床盤122の上下を逆に取り付けることも可能であり、その場合には着床盤122の上面にサンゴの幼生が着床する。
さらに支持部123の側面にも着床する。
すべての支柱112に複数個の着床具12を設置したら、一列の支柱112群の上に、1枚の抑え板113を取り付け、針金などを使ってその両端を基盤111に拘束する。
この抑え板113は、短冊状の鋼板であり、支柱112の間隔と同一の間隔で穴を開口してある。
したがって1枚の抑え板113によって、一列の支柱112群に設置した着床具12を、上から抑えて波浪、潮流などによる抜け出しを防止することができる。
<6> Preparation Step On land, the through hole 121 of the flooring device 12 is installed in the support column 112 of the coral flooring device 1.
Since the support | pillar 112 is provided with fixed length, it can install in the state which piled up the many flooring tools 12 on the one support | pillar 112. FIG.
When each landing gear 12 is attached with the support 123 down and the landing board 122 up, coral larvae land on the lower surface of the landing board 122.
Or it is also possible to attach the support part 123 and the flooring board 122 upside down, and in that case, the coral larvae land on the upper surface of the flooring board 122.
Furthermore, it also lands on the side surface of the support part 123.
When a plurality of landing gears 12 are installed on all the columns 112, a single holding plate 113 is attached on the group of columns 112 and both ends thereof are constrained to the base 111 using a wire or the like.
The holding plate 113 is a strip-shaped steel plate, and holes are opened at the same intervals as the intervals between the columns 112.
Therefore, it is possible to prevent the landing tool 12 installed in the row of support columns 112 from being pushed up from the top by one sheet of the restraining plate 113 and to prevent the landing tool 12 from coming off due to waves, tidal currents, or the like.

<7>着床工程
こうして多数の支柱112に、多数個の着床具12を取り付け、その上から抑え板113で抑えたサンゴ着床装置1を、所定の海底に設置する。
すると時期の経過にしたがって着床具12の着床盤122の平面部や場合によっては側面にサンゴ幼生が着床する。
こうして着底した幼生を半年から1年にかけて飼育する。
着床具12の支持部123の高さを、10mm以内に構成しておくと、ウニ類、魚類などの食害から保護することができ、順調な飼育を行うことができる。
<7> Landing Step In this way, a large number of flooring devices 12 are attached to a large number of support columns 112, and the coral flooring device 1 restrained by the restraining plate 113 from above is installed on a predetermined seabed.
Then, coral larvae land on the flat surface of the flooring board 122 of the flooring tool 12 or in some cases on the side as time passes.
The larvae settled in this way are raised from half a year to one year.
If the height of the support part 123 of the flooring tool 12 is configured to be within 10 mm, it can be protected from food damage such as sea urchins and fish, and can be raised smoothly.

<8>増殖工程
半年から1年後に、着床具12を支柱112から引き出し、サンゴ幼生の着床状態を観察する。
そしてサンゴ幼生が着床した着床具12だけを選別する。
選別した着床具12を、増殖のしやすい海域に運搬して移植する。
その海域の海底には、前記したサンゴ増殖基盤2を設置してある。
その増殖柱22に、サンゴ幼生の着床した着床具12の貫通孔121を貫通させて設置する。
この増殖工程では、各着床具12からそれぞれサンゴが増殖するので、1本の増殖柱22には1個の着床具12を設置することになる。
なお、場合によっては1個体が複数の着床具12にまたがって増殖する場合も想定される。
<8> Proliferation process After half a year to one year, the flooring tool 12 is pulled out from the support 112, and the coral larvae landing state is observed.
Then, only the flooring device 12 on which the coral larvae have landed is selected.
The selected flooring device 12 is transported and transplanted to the easily proliferating sea area.
The coral breeding base 2 described above is installed on the seabed of the sea area.
The through pillar 121 of the flooring tool 12 on which the coral larvae are landed is installed in the growth column 22 so as to penetrate therethrough.
In this multiplication process, corals are propagated from the respective flooring devices 12, so that one flooring device 12 is installed on one growth column 22.
In some cases, it is assumed that one individual proliferates across a plurality of landing gears 12.

1:サンゴ着床装置
11:サンゴ着床基盤
12:着床具
2:サンゴ増殖基盤
21:固定盤
22:増殖柱
1: Coral landing device 11: Coral landing base 12: Flooring tool 2: Coral breeding base 21: Fixed platen 22: Breeding column

Claims (2)

サンゴ着床装置と、サンゴ増殖基盤とで構成し、
サンゴ着床装置は、
サンゴ着床基盤と着床媒体としての着床具と、抑え板により構成し、
着床基盤は、基盤と支柱とより構成し、
基盤は、複数本の支柱を設立させた盤体であり、
着床具は、平面視で大きい面積の着床盤と、
着床盤と一体であって、かつ平面視でその着床盤より小さい面積の支持部と、
着床盤と支持部を貫通する貫通孔とより構成し、
貫通孔の内径は、基盤に設立した支柱の外径よりも大きく形成し、
抑え板は、基板に立設した支柱の間隔と同一の間隔で穴を開口してある短冊状の板であって、支柱群に設置する着床具を上から抑えて抜け出しを防止でき、かつ着床具を支柱から引き出しできるように取り付けてあり、
一方、サンゴ増殖基盤は、
固定盤と、
固定盤に立設した支柱である増殖柱とで形成したことを特徴とした、
サンゴの増殖装置。
Consists of coral implantation device and coral breeding base,
Coral landing equipment
A landing tool as coral implantation base and landing medium, more structure in the pressing plate,
The landing base consists of a base and a support,
The base is a board with multiple pillars,
The flooring tool is a flooring board having a large area in plan view,
A support part that is integral with the flooring board and has a smaller area than the flooring board in plan view;
It consists of a flooring board and a through hole that penetrates the support part,
The inner diameter of the through hole is formed larger than the outer diameter of the support column established on the base,
The restraining plate is a strip-shaped plate with holes opened at the same interval as that of the struts erected on the substrate, and can be prevented from slipping out by restraining the landing gear installed on the strut group from above, and It is attached so that the landing gear can be pulled out from the column,
On the other hand, the coral breeding base is
A fixed plate,
It is characterized by being formed with a growth column that is a support column erected on the fixed platen ,
Coral breeding device.
請求項1記載のサンゴ着床装置と、サンゴ増殖基盤とを使用し、
サンゴ増殖基盤は、固定盤の上に増殖柱としての支柱を設立してあり、
海底の所定の位置にサンゴ着床装置を設置し、
サンゴ着床装置の基盤の支柱に着床具の貫通孔を通して複数の着床具を設置し、
抑え板を、支柱群に設置した着床具を上から抑えて抜け出しを防止でき、かつ着床具を支柱から引き出しできるように取り付け、
着床具にサンゴ幼生が着床したらその着床具を支柱から取り外し、
他の海底に設置したサンゴ増殖基盤の増殖柱に、
サンゴ着床装置の支柱から取り外した着床具をその貫通孔を通して設置して、サンゴの増殖を行うことを特徴とした、
サンゴの増殖方法。
Using the coral landing apparatus according to claim 1 and a coral breeding base,
The coral breeding base has established a pillar as a breeding pillar on the fixed plate,
Install a coral landing device at a predetermined position on the seabed,
A plurality of flooring devices are installed through the through holes of the flooring device on the base of the coral flooring device ,
Attach the restraining plate so that the landing gear installed on the prop group can be suppressed from above and prevented from coming out, and the landing gear can be pulled out from the prop,
Once the coral larva has landed on the flooring device, remove the flooring device from the support,
To the growth pillar of the coral breeding base installed on the other seabed,
It was characterized by installing the flooring tool removed from the column of the coral flooring device through its through-hole and multiplying the coral.
Coral propagation method.
JP2011279832A 2011-12-21 2011-12-21 Coral breeding device and coral breeding method Active JP5800390B2 (en)

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