JPH09187189A - Egg laying reef for cuttlefish - Google Patents
Egg laying reef for cuttlefishInfo
- Publication number
- JPH09187189A JPH09187189A JP8001510A JP151096A JPH09187189A JP H09187189 A JPH09187189 A JP H09187189A JP 8001510 A JP8001510 A JP 8001510A JP 151096 A JP151096 A JP 151096A JP H09187189 A JPH09187189 A JP H09187189A
- Authority
- JP
- Japan
- Prior art keywords
- spawning
- reef
- substrate
- width
- squid
- 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.)
- Granted
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
- Artificial Fish Reefs (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、人工魚礁としての
イカ類の産卵礁に関するものである。TECHNICAL FIELD The present invention relates to a spawning reef of squid as an artificial fish reef.
【０００２】[0002]
【従来の技術】従来、イカ類の産卵の場を人工的に造成
し、産卵量を増やすことによって資源を増大するための
人工魚礁が知られている。2. Description of the Related Art Conventionally, artificial fish reefs have been known for artificially constructing a spawning ground for squids and increasing the amount of spawning to increase resources.
【０００３】イカ類は天然海域では岩棚の下面に産卵す
る。イカ類産卵用の人工魚礁はこの習性を模倣したもの
で、平板からなる産卵用の基質を１段から数段設置した
ものが、種々用いられてきた（例えば、実開昭５９−１
７２５６４号公報参照）。Squids spawn on the underside of rock ledges in natural waters. Artificial fish reefs for spawning squid imitate this behavior, and various types of flat spawning substrates with one to several stages have been used (eg, Kaikai Sho 59-1).
No. 72564).
【０００４】[0004]
【発明が解決しようとする課題】しかしながら、これま
でのイカ類産卵用の魚礁は、産卵用基質として単なる平
板を用いるものが一般的であり、イカ類の産卵習性を十
分把握して設計されたものではない。However, conventional fish reefs for spawning squid generally use a simple plate as a spawning substrate, and were designed with sufficient grasp of spawning habits of squids. Not a thing.
【０００５】また、平板の産卵用基質では長期間経過す
ると、付着物、特にカキ類やホヤ類で覆われてしまい、
イカ類が産卵することが不可能になる。In addition, the flat-bed egg-laying substrate is covered with adherents, especially oysters and ascidians after a long time,
It becomes impossible for squid to lay eggs.
【０００６】さらに、この種の人工魚礁は、設置状態に
おける安定性や、製作面、材料面での経済性を考慮し、
一体成形のコンクリートブロックを用いることが多い。
その場合、複雑な形状は得られ難く、把握した産卵習性
を設計に反映させることができる自由度が小さいといっ
た問題がある。[0006] Further, this type of artificial fish reef takes into consideration the stability in the installed state and the economical efficiency in terms of production and materials,
In many cases, an integrally molded concrete block is used.
In that case, there is a problem that it is difficult to obtain a complicated shape and the degree of freedom in which the grasped spawning habit is reflected in the design is small.
【０００７】本発明は、上述のような課題の解決を図っ
たものであり、カキ類やホヤ類の付着物をできるだけお
さえ、かつイカ類の産卵が良好に行われるイカ類の産卵
礁を提供することを目的としている。The present invention is intended to solve the above problems, and provides a squid spawning reef in which oysters and ascidians can be prevented from adhering as much as possible, and squids can be well spawned. The purpose is to do.
【０００８】[0008]
【課題を解決するための手段】本発明のイカ類の産卵礁
は、魚礁を構成する枠体の上部または中間部に、平面的
な広がりを有し、格子状、スリット状または穴状の空間
部を形成した産卵用基質を設けてなるものである。The squid spawning reef according to the present invention has a space of a lattice shape, a slit shape, or a hole shape, which has a planar spread in an upper portion or an intermediate portion of a frame constituting a fish reef. It is provided with a laying substrate for forming eggs.
【０００９】イカ類産卵用の付着面をカキ類、ホヤ類な
どが覆ってしまえば、イカ類の産卵が行われなくなるこ
とはよく知られている。このカキ類の付着にはある一定
の付着面積を必要とする。また、ホヤ類の幼生は負の走
行性を示し、暗部には付着するものの、明るいところに
は付着しない。一方、イカ類は特に面積には関わらず、
産卵する。It is well known that if oysters, squirts and the like cover the adhering surface for spawning squids, spawning of squids will not take place. Adhesion of these oysters requires a certain adhesion area. In addition, ascidian larvae show a negative runnability and adhere to dark areas but not to bright areas. On the other hand, squids, regardless of area,
Spawn.
【００１０】本発明者は、上記の知見を元に鋭意研究の
結果、カキ類、ホヤ類などが付着し難く、かつイカ類の
産卵が容易に行われる形状を発見し、本発明をなすに到
ったものである。As a result of earnest research based on the above findings, the present inventor discovered a shape in which oysters, squirts and the like are unlikely to adhere, and squids can be easily spawned. It has arrived.
【００１１】本発明の産卵用基質の遮蔽部の幅はホヤ類
の付着防止を第一義に考えた場合、横方向からの光の入
り込みを考慮すればよく、あまり大きくないある程度の
幅で十分である。また、大きすぎると中心部が暗くなり
その効果が薄れる。遮蔽部の形状は、板状でも円形ある
いは角形断面でもよい。また、空間部は光が十分入る幅
であればよい。あまり大きすぎればその効果が低くな
る。The width of the shielding portion of the egg-laying substrate of the present invention should be taken into consideration the light entering from the lateral direction when the prevention of the adhesion of ascidians is taken into consideration first. Is. On the other hand, if it is too large, the central part becomes dark and its effect is diminished. The shape of the shielding portion may be a plate shape, a circular shape, or a rectangular cross section. Further, the space portion may have a width enough to allow light. If it is too large, the effect will be low.
【００１２】次に、カキ類の付着防止を第一義に考えた
場合は、遮蔽部の幅は極力小さい方がよいが、あまり小
さすぎるとイカ類の産卵に適さなくなる。遮蔽部の形状
は円形断面が望ましいが、板状でも角形断面でもよい。
空間部はカキ類の大きさに比べて約半分以上あればよ
い。Next, when the prevention of oyster adhesion is considered first, the width of the shield should be as small as possible, but if it is too small, it will not be suitable for spawning squid. The shape of the shielding portion is preferably a circular cross section, but may be a plate shape or a rectangular cross section.
The space should be about half or more the size of oysters.
【００１３】すなわち、ホヤ類の付着防止を第一義に考
えた場合は、遮蔽部の幅は５ｃｍ〜５０ｃｍ程度で、空
間部の幅は５ｃｍ〜５０ｃｍ程度が望ましい（請求項２
に対応）。That is, when the prevention of ascidians is first considered, it is desirable that the width of the shielding portion is about 5 cm to 50 cm and the width of the space portion is about 5 cm to 50 cm.
Corresponding to).
【００１４】カキ類の付着防止を第一義に考えた場合
は、遮蔽部の幅は０．５ｃｍ〜５ｃｍ程度で空間部の幅
は５ｃｍ以上あればよい（請求項３に対応）。When the prevention of adhesion of oysters is considered first, the width of the shielding portion may be about 0.5 cm to 5 cm and the width of the space portion may be 5 cm or more (corresponding to claim 3).
【００１５】本発明で用いる産卵用基質の材質はガラス
繊維あるいは高弾性係数の繊維で補強した合成樹脂（Ｆ
ＲＰ）、あるいは鋼材、特に樹脂ライニングした鋼板類
等を用いることが望ましい。またコンクリートで構成す
ることも勿論可能である。The material of the spawning substrate used in the present invention is synthetic resin (F) reinforced with glass fibers or fibers having a high elastic modulus.
RP), or steel materials, particularly resin-lined steel plates and the like are preferably used. Of course, it is also possible to use concrete.
【００１６】枠体部分の材質は、安定性、経済性等の面
からコンクリート製のものが望ましいが、必ずしも限定
する必要はない。The material of the frame body is preferably made of concrete in terms of stability, economy, etc., but it is not necessarily limited.
【００１７】産卵用基質の枠体への取付けに関しては、
例えば枠体を構成する柱部材あるいは枠体上部に固定す
る。産卵用基質は、１つの枠体に対し数段に取り付ける
ことも可能であり、さらに、枠体を複数段積み重ねるこ
とも可能である。Regarding the attachment of the spawning substrate to the frame,
For example, it is fixed to a pillar member forming the frame or the upper part of the frame. The spawning substrate can be attached to one frame in several stages, and the frames can be stacked in a plurality of stages.
【００１８】産卵用基質を取り付ける角度は、水平がも
っとも望ましいが、４５度程度まで傾いてもよい。産卵
用基質の枠体への取付け方法としては、枠体の一部に埋
め込むことも可能であり、また、ボルト等の取付け具で
取り付けることも可能である。The angle at which the spawning substrate is attached is most preferably horizontal, but it may be inclined up to about 45 degrees. As a method of attaching the spawning substrate to the frame body, it is possible to embed it in a part of the frame body, or to attach it with a fixture such as a bolt.
【００１９】[0019]
【発明の実施の形態】以下本発明の実施形態について、
図面を用いて説明する。DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below.
This will be described with reference to the drawings.
【００２０】図１は本発明のイカ類の産卵礁の一実施形
態を示したものである。この例では、コンクリート製の
直方体の枠体１の上部に、平面的に広がる格子状の産卵
用基質２を水平に取り付けてある。FIG. 1 shows one embodiment of the squid spawning reef of the present invention. In this example, a lattice-shaped spawning substrate 2 that spreads in a plane is horizontally attached to an upper portion of a rectangular parallelepiped frame body 1 made of concrete.
【００２１】産卵用基質の格子を形成する部材の断面形
状は、図２に示すように円形でも、図３に示すように角
形でも、あるいは板状でもよい。The cross-sectional shape of the member forming the lattice of the egg-laying substrate may be circular as shown in FIG. 2, rectangular as shown in FIG. 3, or plate-shaped.
【００２２】図２の格子状の産卵用基質２ａを構成する
円形断面の部材の径は１ｃｍであり、格子間隔は５ｃｍ
である。また、産卵用基質２ａ全体の平面形は、一辺の
長さが１５０ｃｍの正方形となっており、コンクリート
製の枠体１の上部に埋め込まれている。The diameter of the member having a circular cross section which constitutes the lattice-shaped spawning substrate 2a of FIG. 2 is 1 cm, and the lattice spacing is 5 cm.
It is. The plane shape of the entire egg-laying substrate 2a is a square having a side length of 150 cm, and is embedded in the upper portion of the concrete frame 1.
【００２３】図３の格子状の産卵用基質２ｂを構成する
角形断面の部材の辺の長さは１ｃｍであり、格子間隔は
５ｃｍである。産卵用基質２ｂ全体の平面形は、一辺の
長さが１５０ｃｍの正方形であり、コンクリート製の枠
体１の上面に対し、産卵用基質２ｂの外縁部３をボルト
４で取り付けてある。コンクリート製枠体１の平面形に
おける一辺の長さも１５０ｃｍである。The sides of the members having a rectangular cross section constituting the lattice-shaped spawning substrate 2b of FIG. 3 have a side length of 1 cm and a lattice spacing of 5 cm. The overall shape of the egg-laying substrate 2b is a square having a side length of 150 cm, and the outer edge portion 3 of the egg-laying substrate 2b is attached to the upper surface of the concrete frame 1 with bolts 4. The length of one side of the concrete frame 1 in plan view is also 150 cm.
【００２４】図４は本発明の他の実施形態を示したもの
であり、産卵用基質２ｃとしてＦＲＰ製の平板にスリッ
ト５を形成したものを用いている。FIG. 4 shows another embodiment of the present invention, in which a flat plate made of FRP and having slits 5 is used as the egg-laying substrate 2c.
【００２５】産卵用基質２ｃのスリット５の幅は、スリ
ット部が５ｃｍで遮蔽部としての板部が１０ｃｍで連続
している。また、この例では、コンクリート製枠体１の
上面に２枚の産卵用基質２ｃをボルト４で取り付けてお
り、１枚の産卵用基質２ｃ全体の寸法は１５０ｃｍ×７
５ｃｍの長方形となっている。コンクリート枠体１の一
辺の長さは１５０ｃｍである。The width of the slit 5 of the spawning substrate 2c is 5 cm in the slit portion and 10 cm in the plate portion as the shielding portion, which are continuous. Further, in this example, two spawning substrates 2c are attached to the upper surface of the concrete frame 1 with bolts 4, and the size of one spawning substrate 2c is 150 cm × 7.
It is a 5 cm rectangle. The length of one side of the concrete frame 1 is 150 cm.
【００２６】図５は本発明のイカ類の産卵礁のさらに他
の実施形態を示したものであり、産卵用基質２ｄとして
ＦＲＰ製の平板に多数の穴６を形成したものを用いてい
る。FIG. 5 shows still another embodiment of the squid spawning reef of the present invention, which uses a flat plate made of FRP and having a large number of holes 6 as the spawning substrate 2d.
【００２７】産卵用基質２ｄの穴６の径は５ｃｍで、穴
６どうしの間隔は１０ｃｍで連続している。産卵用基質
２ｄ全体の一辺の長さは１５０ｃｍの正方形をしてお
り、コンクリート製の枠体１の上部と中間部に埋め込ま
れている。The diameter of the holes 6 of the egg-laying substrate 2d is 5 cm, and the distance between the holes 6 is 10 cm. The entire spawning substrate 2d has a square shape with a side length of 150 cm, and is embedded in the upper and middle portions of the concrete frame 1.
【００２８】[0028]
【発明の効果】本発明の基質をもったイカ類の産卵礁
は、カキ類、ホヤ類の付着がほとんどみられず、イカ類
の産卵のみがみられる。INDUSTRIAL APPLICABILITY In the squid spawning reef having the substrate of the present invention, oysters and ascidians are scarcely attached and only squid spawning is observed.
【００２９】本発明の基質をもったイカ類の産卵礁は、
基質部に空間があるため、上下方向の通水性がよく、産
卵されたイカ類の卵のふ化率が平板状の基質をもったイ
カ類の産卵礁に比べて明らかに高い。Squid spawning reefs with the substrate of the present invention are:
Since there is a space in the substrate part, the vertical water permeability is good, and the hatching rate of squid eggs laid is significantly higher than that of the squid spawning reef with a flat substrate.
【００３０】また、本発明のイカ類の産卵礁では、枠体
部分と産卵用基質部分を別個に製作することができ、産
卵用基質の形状を工夫することでイカ類の産卵習性を設
計に十分反映させることができる。Further, in the squid spawning reef of the present invention, the frame portion and the spawning substrate portion can be produced separately, and the laying habit of the squid can be designed by devising the shape of the spawning substrate. Can be fully reflected.
【図１】 本発明のイカ類の産卵礁の一実施形態を示す
斜視図である。FIG. 1 is a perspective view showing an embodiment of a squid spawning reef of the present invention.
【図２】 産卵用基質の格子を構成する部材の断面が円
形であり、かつ枠体に埋め込まれている場合の断面図で
ある。FIG. 2 is a cross-sectional view in the case where a member constituting a lattice of the egg-laying substrate has a circular cross section and is embedded in a frame.
【図３】 産卵用基質の格子を構成する部材の断面が角
形であり、かつ産卵用基質が枠体の上面に取り付けられ
ている場合の断面図である。FIG. 3 is a cross-sectional view in a case where a member forming a lattice of the egg-laying substrate has a rectangular cross section and the egg-laying substrate is attached to the upper surface of the frame.
【図４】 本発明のイカ類の産卵礁の他の実施形態を示
したもので、(a) は平面図、(b) は正面図である。FIG. 4 shows another embodiment of a squid spawning reef of the present invention, (a) is a plan view and (b) is a front view.
【図５】 本発明のイカ類の産卵礁のさらに他の実施形
態を示したもので、(a) は平面図、(b) は鉛直断面図で
ある。[Fig. 5] Fig. 5 shows still another embodiment of the squid spawning reef of the present invention, wherein (a) is a plan view and (b) is a vertical sectional view.
１…コンクリート枠体、２，２ａ，２ｂ，２ｃ，２ｄ…
イカ類産卵用基質、３…外縁部、４…ボルト、５…スリ
ット、６…穴1 ... Concrete frame, 2, 2a, 2b, 2c, 2d ...
Squid spawning substrate, 3 ... outer edge, 4 ... bolt, 5 ... slit, 6 ... hole
Claims (3)
に、平面的な広がりを有し、格子状、スリット状または
穴状の空間部を形成した産卵用基質を設けてなることを
特徴とするイカ類の産卵礁。1. A spawning substrate having a lattice-shaped, slit-shaped, or hole-shaped space portion having a planar spread is provided on an upper portion or an intermediate portion of a frame body forming a fish reef. Squid spawning reef.
り、隣り合う空間部間の遮蔽部の幅が５ｃｍ〜５０ｃｍ
である請求項１記載のイカ類の産卵礁。2. The width of the space portion is 5 cm to 50 cm, and the width of the shielding portion between adjacent space portions is 5 cm to 50 cm.
The squid spawning reef according to claim 1.
り合う空間部間の遮蔽部の幅が０．５ｃｍ〜５ｃｍであ
る請求項１記載のイカ類の産卵礁。3. The squid spawning reef according to claim 1, wherein the width of the space portion is 5 cm or more, and the width of the shielding portion between the adjacent space portions is 0.5 cm to 5 cm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP00151096A JP3662060B2 (en) | 1996-01-09 | 1996-01-09 | Squid spawning reef |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP00151096A JP3662060B2 (en) | 1996-01-09 | 1996-01-09 | Squid spawning reef |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH09187189A true JPH09187189A (en) | 1997-07-22 |
| JP3662060B2 JP3662060B2 (en) | 2005-06-22 |
Family
ID=11503489
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP00151096A Expired - Lifetime JP3662060B2 (en) | 1996-01-09 | 1996-01-09 | Squid spawning reef |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3662060B2 (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006254761A (en) * | 2005-03-16 | 2006-09-28 | Litoncosmo Co Ltd | Artificial fish bank and method for installing the same |
| CN100358418C (en) * | 2006-03-21 | 2008-01-02 | 中国海洋大学 | Inkfish spawning reef |
| CN102356763A (en) * | 2011-10-31 | 2012-02-22 | 中国水产科学研究院淡水渔业研究中心 | Carp nest |
| CN102599082A (en) * | 2011-11-07 | 2012-07-25 | 浙江省海洋水产研究所 | Square combined artificial fish reef |
| CN109362617A (en) * | 2018-11-15 | 2019-02-22 | 宁波大学 | A kind of cultural method improving tiger spot inkfish spawning quantity and quality |
| CN112243904A (en) * | 2020-09-10 | 2021-01-22 | 浙江省海洋水产研究所 | Combined cuttlefish egg attachment device |
| KR102555068B1 (en) * | 2023-02-23 | 2023-07-19 | 주식회사 수중생태기술연구소 | Spawning habitat creation device for sepia esculenta. |
-
1996
- 1996-01-09 JP JP00151096A patent/JP3662060B2/en not_active Expired - Lifetime
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006254761A (en) * | 2005-03-16 | 2006-09-28 | Litoncosmo Co Ltd | Artificial fish bank and method for installing the same |
| CN100358418C (en) * | 2006-03-21 | 2008-01-02 | 中国海洋大学 | Inkfish spawning reef |
| CN102356763A (en) * | 2011-10-31 | 2012-02-22 | 中国水产科学研究院淡水渔业研究中心 | Carp nest |
| CN102599082A (en) * | 2011-11-07 | 2012-07-25 | 浙江省海洋水产研究所 | Square combined artificial fish reef |
| CN109362617A (en) * | 2018-11-15 | 2019-02-22 | 宁波大学 | A kind of cultural method improving tiger spot inkfish spawning quantity and quality |
| CN112243904A (en) * | 2020-09-10 | 2021-01-22 | 浙江省海洋水产研究所 | Combined cuttlefish egg attachment device |
| CN112243904B (en) * | 2020-09-10 | 2022-02-18 | 浙江省海洋水产研究所 | Combined cuttlefish egg attachment device |
| KR102555068B1 (en) * | 2023-02-23 | 2023-07-19 | 주식회사 수중생태기술연구소 | Spawning habitat creation device for sepia esculenta. |
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| JP3662060B2 (en) | 2005-06-22 |
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