JPH0751031B2 - How to attach algae zoospores - Google Patents
How to attach algae zoosporesInfo
- Publication number
- JPH0751031B2 JPH0751031B2 JP62162300A JP16230087A JPH0751031B2 JP H0751031 B2 JPH0751031 B2 JP H0751031B2 JP 62162300 A JP62162300 A JP 62162300A JP 16230087 A JP16230087 A JP 16230087A JP H0751031 B2 JPH0751031 B2 JP H0751031B2
- Authority
- JP
- Japan
- Prior art keywords
- zoospores
- cathode
- algae
- brown algae
- reef
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Classifications
-
- Y—GENERAL 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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A40/00—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production
- Y02A40/80—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production in fisheries management
- Y02A40/81—Aquaculture, e.g. of fish
Landscapes
- Farming Of Fish And Shellfish (AREA)
- Artificial Fish Reefs (AREA)
- Cultivation Of Seaweed (AREA)
Description
【発明の詳細な説明】 〔産業上の利用分野〕 本発明は藻の遊走子の付着方法、より詳しくは、アラ
メ、カジメ、コンブ等のようにアワビ、ウニ等の餌料と
なる褐藻類の藻の遊走子の付着方法に関するものであ
る。The present invention relates to a method for attaching zoospores of algae, more specifically, algae of brown algae such as arame, kajime, kelp and the like that serve as a feed for abalone, sea urchin and the like. The present invention relates to a method for attaching zoospores.
一般にアワビ、ウニ等を養殖する場合、その餌料となる
アラメ、カジメ、コンブ等の褐藻類を給餌する必要があ
る。Generally, when abalone, sea urchin and the like are cultivated, it is necessary to feed brown algae such as arame, squid and kelp as a feed.
このため、このような褐藻類を自然海域から得ようとす
ると問題がある。即ち、近来自然海域においては磯やけ
等により藻礁となり得る海域が減少する傾向にあり、そ
のため、この褐藻類を得るために高額な費用を要するこ
ととなっている。Therefore, there is a problem in trying to obtain such brown algae from the natural sea area. In other words, in recent natural sea areas, there is a tendency for the sea areas that can become algae reefs to decrease due to rocks and cliffs, so that high costs are required to obtain these brown algae.
前記事情から本出願人は、この磯やけ状態の海域を人工
的に藻礁として造成し、この褐藻類の人手を容易にする
か、又はその藻礁自体にアワビ、ウニ等の稚貝を放流し
てこれを養殖する方法を先に提案した。Due to the above circumstances, the applicant artificially created the sea area in the rocky condition as an alga reef to facilitate the manpower of the brown algae, or to release juvenile shellfish such as abalone and sea urchin to the alga reef itself. I first proposed a method for farming this.
即ち、この養殖方法は、導電性よりなる陽極と陰極を海
中に設け、この陽極と陰極間に0.2mA/cm2程度の直流電
流を流すことによって陰極上に海水中に含有されるCa等
の鉱山物質（電着物）を付着させ、この電着物上に褐藻
類の遊走子を付着生成させて藻礁を形成するものであ
る。この方法は、海水中に含有されている鉱物イオンを
鋼構造物の表面上に電着させることによって褐藻類が自
然に付着している状態と同様な状態を形成させ、その電
着物の表面に藻礁を形成するものである。That is, this aquaculture method is to provide a conductive anode and cathode in the sea, such as Ca contained in seawater on the cathode by passing a direct current of about 0.2mA / cm 2 between this anode and cathode A mine substance (electrodeposit) is attached, and zoospores of brown algae are attached and generated on the electrodeposit to form an algal reef. This method forms a state similar to the state where brown algae naturally adhere by electrodepositing mineral ions contained in seawater on the surface of the steel structure, and the surface of the electrodeposit is formed. It forms a reef.
本発明者等の多くの実験によれば、前記のように電着物
の層を構造物の表面に形成した藻礁は、この電着物の層
のない藻礁に比較して遥かに褐藻類の付着が良好である
ことが確認されている。According to many experiments conducted by the present inventors, the algal reef formed with the layer of the electrodeposit on the surface of the structure as described above has a far higher level of brown algae than the algal reef without the layer of the electrodeposit. It has been confirmed that the adhesion is good.
しかし、この藻礁に褐藻類に繁茂させる手段は特にな
く、自然に繁茂するのに任せておくしかなかったのであ
る。従って、ある時は良好に繁茂し、また、ある時は少
ない繁茂しか得られない等、褐藻類の生産にかなりのバ
ラツキがあったのである。However, there is no particular way to grow brown algae on this reef, and we had no choice but to let it grow naturally. Therefore, there was considerable variability in the production of brown algae, such that it flourished satisfactorily at one time, and at one time only a small amount of vegetation was obtained.
一方、褐藻類は、海域にもよるが、例えば９月ないし12
月の間の胞子の放出時期にベン毛を持った遊走子を葉体
から多量に放出するが、従来の方法においては、この遊
走子が藻礁に自然に付着するのを待つしか方法がなかっ
たのである。On the other hand, brown algae, for example, from September to 12
At the time of spore release during the month, a large amount of Benzophyte-bearing zoospores are released from the leaf body, but the only conventional method is to wait for the zoospores to naturally attach to the alga reef. It was.
しかしながら、前記方法によれば電着物上への遊走子の
付着は、遊走子自体の浮遊によるものであり、その付着
密度は粗いものとなっており、海象条件に左右され易
く、効率的に褐藻類を生産することができなかった。However, according to the above method, the attachment of the zoospores on the electrodeposit is due to the suspension of the zoospores, and the density of the attachment is coarse, and the zoospores are easily affected by the sea condition, and the brown algae are efficiently used. Could not produce the kind.
本発明は本発明したような従来の問題点を解決するため
になされたものであって、その目的とするところは、褐
藻類の遊走子を構造物表面に積極的に付着させ、その付
着密度を密とし、限られた範囲内に多量の藻類を育成し
ようとする点にある。The present invention has been made to solve the conventional problems such as those of the present invention, and the purpose thereof is to positively attach zoospores of brown algae to the surface of a structure and to obtain the attachment density. It is a point to try to grow a large amount of algae within a limited range.
本発明は、前記したような目的を構成するために、褐藻
類の遊走子が浮遊している海域に導電性材料よりなる陽
極と陰極を配置し、該陽極と陰極間に直流の微弱電流を
流し、前記陰極表面上に前記遊走子を付着させたのち、
該遊走子を育成させるものである。In order to configure the above-mentioned object, the present invention arranges an anode and a cathode made of a conductive material in a sea area in which the zoospores of brown algae are suspended, and a weak DC current is applied between the anode and the cathode. After flowing, after attaching the zoospores on the cathode surface,
The zoospores are raised.
即ち、本発明は褐藻類の遊走子を藻礁ないしは藻礁とな
る材料に電気的に付着させ、これを育成するものであ
る。That is, the present invention is to electrically attach zoospores of brown algae to algal reef or a material to be algal reef and grow the same.
本発明は、各種の魚礁の実験、特に電着方法を利用した
魚礁の実験ないしは実績において、遊走子が遊泳してい
る遊泳区域内に電界を形成すると、この遊走子を陰極に
誘導することが可能であることを発見し、この知見に基
づいて得られたものである。遊走子は、陰極に向って移
動するので、遊走子の散らばりを少なくすることがが可
能であり、良好な藻礁を効率的に形成することが可能で
ある。INDUSTRIAL APPLICABILITY The present invention is capable of inducing the zoospores to a cathode when an electric field is formed in a swimming area in which the zoospores are swimming, in various fish reef experiments, particularly fish reef experiments or achievements using the electrodeposition method. It was discovered based on this finding that it was possible. Since the zoospores move toward the cathode, it is possible to reduce the dispersion of the zoospores, and it is possible to efficiently form a good reef.
本発明を実施するためには、陰極と陽極とが必要である
が、電気的に褐藻類の遊走子を付着させる具体的な手段
としては、藻礁となる構造物を陰極とするものが好まし
く、金鋼又は鉄筋等をコンクリートで覆ったブロックや
電着構造物等を使用することができる。In order to carry out the present invention, a cathode and an anode are required, but as a concrete means for electrically attaching the zoospores of brown algae, it is preferable to use a structure that becomes an algal reef as a cathode. It is possible to use a block or an electrodeposited structure in which gold steel or reinforcing bars are covered with concrete.
以下第１図及び第２図に基づき本発明による藻礁の造成
方法の実施例を説明する。An embodiment of the method for creating an algal reef according to the present invention will be described below with reference to FIGS. 1 and 2.
第１図において１は海中に設けられた導電性材料よりな
る陽極であり、２は海底３に敷設された陰極であって、
この陰極２は金鋼や鉄筋の如き内部部材４と該内部部材
４を覆うコンクリートの如き外部部材５とにより構成さ
れている。この外部部材５はコンクリートのほか電着物
やメッシュ状もしくは発泡されたプラスチック等の藻の
遊走子が好んで着床しうる材料で構成され少なくとも内
部部材４と表面の海水が非絶縁状態に形成されている。In FIG. 1, 1 is an anode made of a conductive material provided in the sea, 2 is a cathode laid on the seabed 3,
The cathode 2 is composed of an inner member 4 such as gold steel or a reinforcing bar and an outer member 5 such as concrete covering the inner member 4. The outer member 5 is made of a material that can be preferably implanted on the surface of the alga zoospores such as an electrodeposit and a mesh-like or foamed plastic in addition to concrete. At least the inner member 4 and the surface seawater are formed in a non-insulated state. ing.
そしてこの陽極１と陰極２とは夫々直流電源装置６との
間にケーブル7,8が設けられ微弱な直流電流が流れるよ
うになっている。Cables 7 and 8 are provided between the anode 1 and the cathode 2 and the DC power supply device 6 so that a weak DC current flows.
実際には褐藻類ａは９〜12月頃が胞子放出時期であり、
この時期にベン毛を持って自由に泳ぎ廻ることのできる
遊走子ｂを葉体から多量に放出するので、この時期にこ
の遊走子が浮遊する海域にあらかじめ工場で製造された
陽極１と陰極２とを配置し、この間に藻の遊走子を生き
たままで陰極に誘引する微弱な直流電流を流すのであ
る。Actually, brown algae a is a spore release time from September to December,
At this time, a large amount of zoospores b, which can freely swim around with Ben hair, is released from the leaf body. Therefore, at this time, the anode 1 and the cathode 2 which were manufactured at the factory in the sea area in which the zoospores float are manufactured in advance. And a small direct current that attracts the alga zoospores to the cathode while alive is applied.
この微弱な直流電流は、例えばコンブの遊走子の場合に
は0.05〜5.0mA/m2であり、また、ワカメやアラメの場合
には0.001〜10.0mA/m2である。従って、この微弱な直流
電流としては、0.001〜10.0mA/m2、好ましくは0.1〜1.0
mA/m2程度である。The weak DC current, for example in the case of kelp zoospores are 0.05~5.0mA / m 2, In the case of seaweed or Eisenia is 0.001~10.0mA / m 2. Therefore, the weak DC current is 0.001 to 10.0 mA / m 2 , preferably 0.1 to 1.0.
It is about mA / m 2 .
なお、陰極２を電着物で構成する場合は、あらかじめ、
褐藻類の胞子放出時期より数ケ月前に海底に内部部材４
となるべき金網か鉄筋を敷設し、その表面に電着物を付
着させておくのである。When the cathode 2 is composed of an electrodeposit,
Internal member 4 on the seabed several months before the release of spores from brown algae
The wire mesh or rebar to be used is laid, and the electrodeposit is attached to the surface.
第２図は他の実施例を示すものであって、直流電源装置
６は船舶９上に設けられ、そして陰極２は海底３に配置
された基礎10に脚体11により支持されている。FIG. 2 shows another embodiment, in which the DC power supply device 6 is provided on a ship 9, and the cathode 2 is supported by legs 11 on a foundation 10 arranged on the seabed 3.
次にこの陰極２表面への遊走子の付着状況について実験
結果を説明する。Next, the experimental results will be described with respect to the adhesion state of the zoospores to the surface of the cathode 2.
I.実験装置 水槽：水槽12は第３図に示すように長さ（ｌ）2.84
m、幅（ｗ）1.40m、深さ（ｄ）0.5mとし、等間隔を置い
て４個の供試体12−１〜/2−４を配置した。I. Experimental apparatus Water tank: The water tank 12 has a length (l) of 2.84 as shown in FIG.
m, width (w) 1.40 m, depth (d) 0.5 m, and four test pieces 12-1 to / 2-4 were arranged at equal intervals.
供試体：陰極となる供試体12−１〜12−４は何れも外
部部材を電着物とし、その大きさは何れも200×300mmと
した。Specimen: In each of Specimens 12-1 to 12-4, which are cathodes, an external member was an electrodeposit, and the size thereof was 200 × 300 mm.
電流密度:12−１……通電せず 12−２……0.25mA 12−３……0.50mA 12−４……1.00mA 遊走子液：福岡県宗像群大島地先海域から採取したア
ラメ50本を浸漬して遊走子液を作成した。Current density: 12-1 …… No current 12-2 …… 0.25mA 12-3 …… 0.50mA 12-4 …… 1.00mA Spinning fluid: 50 sea bream collected from Oshima area, Munakata Group, Fukuoka Prefecture Was dipped to prepare zoospore fluid.
時間：供試体を遊走子液に浸漬し、５分間通電した。Time: The test piece was immersed in the zoospore fluid and energized for 5 minutes.
II.実験結果 前記により得られた供試体を海水水槽に移しかえて100
日後に遊走子の付着状態及び葉長を調べた結果、次のと
おりであった。II. Experimental results The test specimen obtained above was transferred to a seawater tank and the
As a result of examining the attachment state and leaf length of the zoospores after a day, the results were as follows.
〔発明の効果〕 以上の説明から明らかなように、本発明による藻の遊走
子の付着方法によれば、陰極と陽極とを、遊走子が浮遊
する海域に浸漬配置し、遊走子が遊走する時期に、前記
両極間に遊走子を生きたままで陰極に誘引する直流の微
弱電流を流すので、遊走する遊走子を生きたままで積極
的に誘引し短時間に高密度に集合させることができる。 [Effects of the Invention] As is clear from the above description, according to the method for attaching algae zoospores of the present invention, the cathode and the anode are immersed in the sea area in which the zoospores float, and the zoospores migrate. At that time, a weak DC current is drawn between the two electrodes to attract the zoospores to the cathode while they are still alive. Therefore, the migrating zoospores can be actively attracted while still alive and can be densely assembled in a short time.
そして、前記陰極表面を遊走子が着床しうる外部部材で
覆っているので、誘引し集合してきた藻の遊走子を外部
部材表面に直ちにかつ容易に付着させることができ、そ
の結果、大量の藻類を育成する生産性の高い藻礁を容易
かつ安価に造成できるという効果がある。And since the cathode surface is covered with an external member on which the zoospores can land, it is possible to immediately and easily attach the attracted and collected alga zoospores to the external member surface, resulting in a large amount. There is an effect that a highly productive algal reef for growing algae can be easily and inexpensively created.
第１図乃至第３図は本発明による藻礁の造成方法の一実
施例を示すものであって、第１図は第１実施例の全体
図、第２図は第２実施例の全体図、第３図は実験装置の
説明図である。 ａ……海藻、ｂ……遊走子 １……陽極、２……陰極、３……海底、４……内部部
材、５……外部部材、６……直流電源装置、7,8……ケ
ーブル、９……船舶、10……基礎、11……脚体、12……
水槽。1 to 3 show an embodiment of a method for forming an algal reef according to the present invention. FIG. 1 is an overall view of the first embodiment, and FIG. 2 is an overall view of the second embodiment. , FIG. 3 is an explanatory view of the experimental apparatus. a: seaweed, b: zoospore 1 ... anode, 2 ... cathode, 3 ... seabed, 4 ... internal member, 5 ... external member, 6 ... DC power supply device, 7, 8 ... cable , 9 ... ship, 10 ... foundation, 11 ... leg, 12 ...
Aquarium.
Claims (1)
覆った陰極と陽極とを、遊走子が浮遊する海域に浸漬配
置し、遊走子が遊走する時期に、前記両極間に遊走子を
生きたままで陰極に誘引する直流の微弱電流を流し、前
記外部部材表面に遊走子を誘引付着させることを特徴と
する藻の遊走子の付着方法。1. A cathode and an anode, the surface of which is covered with an external member on which algae zoospores can be implanted, are immersed in a sea area in which the zoospores float, and at the time when the zoospores migrate, a space between the electrodes is provided. A method for attaching algae zoospores, characterized in that a weak DC current that attracts the zoospores to the cathode is applied to attract the zoospores to the surface of the external member.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62162300A JPH0751031B2 (en) | 1987-07-01 | 1987-07-01 | How to attach algae zoospores |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62162300A JPH0751031B2 (en) | 1987-07-01 | 1987-07-01 | How to attach algae zoospores |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6410935A JPS6410935A (en) | 1989-01-13 |
| JPH0751031B2 true JPH0751031B2 (en) | 1995-06-05 |
Family
ID=15751878
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62162300A Expired - Lifetime JPH0751031B2 (en) | 1987-07-01 | 1987-07-01 | How to attach algae zoospores |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0751031B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4912226B2 (en) * | 2007-06-13 | 2012-04-11 | 株式会社白寿生科学研究所 | Seafood breeding device and breeding method |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59140822A (en) * | 1983-02-02 | 1984-08-13 | 三井造船株式会社 | Formation of algae field |
-
1987
- 1987-07-01 JP JP62162300A patent/JPH0751031B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6410935A (en) | 1989-01-13 |
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