JP2003199454A - Fish bank - Google Patents
Fish bankInfo
- Publication number
- JP2003199454A JP2003199454A JP2001400552A JP2001400552A JP2003199454A JP 2003199454 A JP2003199454 A JP 2003199454A JP 2001400552 A JP2001400552 A JP 2001400552A JP 2001400552 A JP2001400552 A JP 2001400552A JP 2003199454 A JP2003199454 A JP 2003199454A
- Authority
- JP
- Japan
- Prior art keywords
- fish
- fence
- fish reef
- attached
- main body
- 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.)
- Pending
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、魚類の蝟集、繁殖
に用いられる魚礁に関する発明である。TECHNICAL FIELD The present invention relates to a fish reef used for collecting and breeding fish.
【０００２】[0002]
【従来の技術】従来の魚礁は、海水流の乱れ、収斂を生
じさせることにより、プランクトンやアミ類等を蝟集、
或いは付着生物を増殖させて該付着生物間に生息する微
小エビ類を繁殖させ、これらプランクトンやアミ類、微
小エビ類を餌とする魚類の餌場としての機能を持たせる
と同時に、魚類の隠れ場としての機能を持たせたものが
一般的である。2. Description of the Related Art A conventional fish reef collects plankton, algae, etc. by causing turbulence and convergence of seawater flow.
Alternatively, by growing the attached organisms and propagating the micro shrimp that live between the attached organisms, the plant can function as a feeding ground for the fish that feed on these plankton, amyids, and micro shrimp, and at the same time hide the fish. It is common to have a function as a place.
【０００３】本出願人は、上記の機能を備え、且つ製造
が容易な魚礁を特開平１０−１０８５８４号に提案し
た。その構成を図４に示す。図中、１はコンクリート製
柱からなる本体、２は側面、３は窓部、４１は遮蔽板で
ある。図４の魚礁は、本体１を頭を欠いた六角錐形状と
し、６面あるテーパー形状の側面２の窓部３に、該窓部
３を部分的に塞ぐ遮蔽板４１を取り付けたものである。
当該構成においては、本体１及び遮蔽板３に遮られた海
水流がこれらの後背部で乱流或いは渦流を形成し、また
魚類の隠れ場となる陰影を形成する。The applicant of the present invention has proposed a fish reef having the above-mentioned function and easy to manufacture in Japanese Patent Laid-Open No. 10-108584. The structure is shown in FIG. In the figure, 1 is a main body made of concrete columns, 2 is a side surface, 3 is a window, and 41 is a shielding plate. In the fish reef of FIG. 4, the main body 1 has a hexagonal pyramid shape without a head, and a shielding plate 41 that partially closes the window portion 3 is attached to the window portion 3 of the side surface 2 having six tapered surfaces. .
In this structure, the seawater flow shielded by the main body 1 and the shielding plate 3 forms a turbulent flow or a vortex in the rear part of the seawater, and also forms a shadow for hiding fish.
【０００４】[0004]
【発明が解決しようとする課題】上記に例示したような
従来の魚礁は、大型魚類を蝟集する効果に重点を置いて
おり、図４に示したように遮蔽板を配したり、或いは、
構造を複雑化することで大型魚類の隠れ場を形成してい
た。The conventional fish reef as exemplified above is focused on the effect of collecting large fish, and a shield plate may be arranged as shown in FIG. 4, or
By complicating the structure, it formed a hiding place for large fish.
【０００５】しかしながら、近年、大型魚類の餌となる
小型魚類や、該小型魚類の餌となる遊泳アミ類、特に魚
礁に付着した付着生物間に生息する微小エビ類などの蝟
集や繁殖の効果が高く、結果として大型魚類の蝟集効果
の高い魚礁が求められるようになった。However, in recent years, the effect of collecting and breeding small fish serving as feed for large fish, swimming amyids serving as feed for the small fish, and particularly micro shrimps living among attached organisms attached to fish reefs has been improved. As a result, there is a growing demand for fish reefs that are highly effective in collecting large fish.
【０００６】本願発明の課題は、小型魚類や遊泳アミ
類、微小エビ類の蝟集、繁殖効果の高い魚礁を提供する
ことにある。[0006] An object of the present invention is to provide a fish reef having a high collecting effect and a collecting effect on small fish, swimming nettles and shrimp.
【０００７】[0007]
【課題を解決するための手段】本発明は、頭を欠いた錐
体形状を呈し、少なくともその側面に窓部を有する中空
の本体と、該窓部を部分的に覆って取り付けられた多数
の開口部を有するフェンスとからなることを特徴とする
魚礁である。DISCLOSURE OF THE INVENTION The present invention has a hollow main body having a truncated cone shape having a window portion on at least a side surface thereof, and a large number of members attached so as to partially cover the window portion. It is a fish reef characterized by comprising a fence having an opening.
【０００８】[0008]
【発明の実施の形態】以下に本発明を実施形態を挙げて
説明する。BEST MODE FOR CARRYING OUT THE INVENTION The present invention will be described below with reference to embodiments.
【０００９】図１に本発明の魚礁の好ましい一実施形態
の斜視図を示す。図中、１は本体、２は側面、３は窓
部、４はフェンスである。本実施形態の魚礁は、本体の
形状を頭を欠いた六角錐とした例である。FIG. 1 shows a perspective view of a preferred embodiment of the fish reef of the present invention. In the figure, 1 is a main body, 2 is a side surface, 3 is a window portion, and 4 is a fence. The fish reef of the present embodiment is an example in which the shape of the main body is a hexagonal pyramid without a head.
【００１０】本発明の魚礁は、本体が頭を欠いた錐体
（角錐或いは円錐）であることから、海底に設置した際
の安定性が高く、漁網が引っ掛かりにくい。また、底面
の形状としては、円形或いは三角形以上の多角形であれ
ば特に限定されないが、製造の容易性と、海水流の流れ
の方向の変化に対応する上で、図１に示した六角形であ
ることが好ましい。また、底面に対する側面の傾きは特
に限定されないが、底面と側面のなす角度が２０〜８０
°の範囲にあることが好ましい。Since the main body of the fish reef of the present invention is a truncated cone (pyramid or cone), the fish reef has high stability when installed on the seabed and the fishing net is not easily caught. Also, the shape of the bottom surface is not particularly limited as long as it is a circle or a polygon of a triangle or more, but in view of the ease of manufacturing and the change in the direction of the seawater flow, the hexagon shown in FIG. Is preferred. The inclination of the side surface with respect to the bottom surface is not particularly limited, but the angle formed by the bottom surface and the side surface is 20 to 80.
It is preferably in the range of °.
【００１１】本発明の魚礁の本体１は中空体であり、そ
の側面２に窓部３を有している。尚、図２に示した実施
形態は六角錐であるため、６面ある側面２の形状はテー
パー形状であり、各側面２の外周を残して窓部３を開口
すれば良いが、円錐の場合には側面は連続する曲面であ
るため、適当な大きさの窓部を適当な間隔をおいて開口
すればよく、窓部の個数は特に限定されない。但し、適
宜海水流が内部に流れ込み、且つ、海水流の流れの方向
の変化に対応しうるように、４方向以上に窓部を設ける
ことが好ましい。また、図１に示したように頂部や底部
にも窓部を形成しておくことが望ましい。The main body 1 of the fish reef of the present invention is a hollow body, and has a window portion 3 on its side surface 2. Since the embodiment shown in FIG. 2 is a hexagonal pyramid, the six side surfaces 2 are tapered, and the window 3 may be opened while leaving the outer periphery of each side surface 2. Since the side surface is a continuous curved surface, it is sufficient to open windows of appropriate size at appropriate intervals, and the number of windows is not particularly limited. However, it is preferable to provide the window portions in four or more directions so that the seawater flow appropriately flows into the inside and can respond to the change in the direction of the seawater flow. Further, it is desirable to form windows at the top and bottom as shown in FIG.
【００１２】本発明の魚礁の本体１の素材としては特に
限定されないが、海底に設置して浮き上がらないこと、
及び、海水流によって移動しないことが必要であり、適
当な重量を有するものが好ましい。具体的には、コンク
リートや鋼材が好ましく用いられる。また、本体１は一
体成形体であっても、複数の部材を組み合わせて一体化
したものでもかまわない。The material of the main body 1 of the fish reef of the present invention is not particularly limited, but it should be installed on the seabed so as not to float up.
Also, it is necessary that it does not move due to seawater flow, and one having an appropriate weight is preferable. Specifically, concrete or steel is preferably used. Further, the main body 1 may be an integrally molded body, or may be an integrated body formed by combining a plurality of members.
【００１３】本発明においては、本体１の側面２の窓部
３にフェンス４を取り付けたことに特徴を有する。該フ
ェンス４は複数の開口部を有しており、これにより、フ
ェンス４の後背面において小さい渦流が積極的に形成さ
れるため、従来の平板に比べてプランクトンやアミ類の
蝟集効果が高く、また、付着生物間に生息するエビ類の
繁殖効果も向上する。また、該フェンス４の開口部は経
時的に付着生物によって部分的に塞がれるため、陰影を
形成し、魚類の隠れ場としての機能も十分に発現する。The present invention is characterized in that the fence 4 is attached to the window portion 3 on the side surface 2 of the main body 1. The fence 4 has a plurality of openings, whereby a small eddy current is positively formed on the back surface of the fence 4, so that the effect of collecting plankton and nets is higher than that of a conventional flat plate. In addition, the reproductive effect of the shrimp that inhabit among the attached organisms is improved. Further, since the opening of the fence 4 is partially blocked by the attached organisms over time, it forms a shadow and sufficiently exhibits a function as a hiding place for fish.
【００１４】かかるフェンス４は、隣接する開口部間を
隔てる遮蔽部の形状が、格子状或いは梯子状に構成され
ていることが好ましく、隣接する遮蔽部間が適度にあい
ていることが望ましい。図２に、遮蔽部が格子状のフェ
ンスの一例の部分拡大図を示す。図中、１１が遮蔽部、
１２が開口部であり、遮蔽部１１と開口部１２との幅の
比（ｔa1：ｔb1、及び、ｔa2：ｔb2）は１：２〜１：２
０が好ましく、開口部１２の幅としては１〜２０ｃｍ程
度が好ましい。尚、フェンス４の補強のため、或いは、
該フェンス４の窓部３への取り付けのために、該フェン
ス４の外周に適宜取り付けられる、遮蔽部３よりも幅広
の部材については遮蔽部３に含まないものとする。開口
部１２の幅が狭すぎる場合には、開口部１２を設けた効
果が不十分であり、また、広すぎる場合にも逆にその効
果が低下してしまう。In the fence 4, it is preferable that the shape of the shields that separate the adjacent openings be formed in a lattice shape or a ladder shape, and it is desirable that the adjacent shields be appropriately spaced. FIG. 2 shows a partially enlarged view of an example of a fence in which the shielding portion has a lattice shape. In the figure, 11 is a shielding part,
12 is an opening, and the width ratio (t a1 : t b1 and t a2 : t b2 ) between the shield 11 and the opening 12 is 1: 2 to 1: 2.
0 is preferable, and the width of the opening 12 is preferably about 1 to 20 cm. For reinforcement of the fence 4, or
In order to attach the fence 4 to the window portion 3, a member wider than the shielding portion 3 that is appropriately attached to the outer periphery of the fence 4 is not included in the shielding portion 3. If the width of the opening 12 is too narrow, the effect of providing the opening 12 is insufficient, and if it is too wide, the effect is reduced.
【００１５】また、フェンス４の遮蔽部３の断面（図２
中、Ａ−Ａ’）形状は、円形或いは矩形であることが好
ましい。Further, a cross section of the shielding portion 3 of the fence 4 (see FIG.
The shape of AA ′) in the middle is preferably circular or rectangular.
【００１６】本発明にかかるフェンス４は、図２に示し
たように窓部３を部分的に覆うが、好ましくは窓部３の
２０〜８０％の領域を塞ぐように覆うことが好ましい。
また、各窓部３に取り付けるフェンス４は１枚に限定さ
れず、図３に示すように、間隔をあけて２枚（４ａ、４
ｂ）、或いは３枚以上取り付けてもかまわない。The fence 4 according to the present invention partially covers the window portion 3 as shown in FIG. 2, but it is preferable to cover the window portion 3 so as to cover 20% to 80% of the area of the window portion 3.
The number of fences 4 attached to each window 3 is not limited to one, and as shown in FIG.
b), or three or more may be attached.
【００１７】かかるフェンス４の素材としては、ガラス
繊維或いは高弾性係数の繊維で補強した合成樹脂（ＦＲ
Ｐ）等合成樹脂素材や鋼材、或いは樹脂ライニングした
鋼材等複合材が好ましく用いられる。The material of the fence 4 is synthetic resin (FR) reinforced with glass fibers or fibers having a high elastic modulus.
A synthetic resin material such as P), a steel material, or a composite material such as a resin-lined steel material is preferably used.
【００１８】[0018]
【実施例】図１に示した構造の魚礁を３カ所の異なる海
域の海底に設置して付着生物の付着状況を調べた。該魚
礁の本体の礁高（Ｄ）は２．５０ｍ、礁幅（Ｂ）は６．
８６ｍ、奥行き（Ｌ）は５．９４ｍ、質量が９．０４
ｔ、空容積が３４．１ｍ3、窓部の面積が３．８ｍ2のコ
ンクリート製であった。また、フェンスは、遮蔽部が断
面が直径１０ｍｍの円形（即ち、幅はｔa1、ｔa2いずれ
も１０ｍｍ）、開口部の幅ｔb1、ｔb2がそれぞれ６０ｍ
ｍ、ＦＲＰからなる一体成形品で、面積を窓部の２１％
を覆う０．８ｍ2とした。Example A fish reef having the structure shown in FIG. 1 was installed on the seabed of three different sea areas to examine the state of attachment of attached organisms. The reef height (D) of the main body of the fish reef is 2.50 m, and the reef width (B) is 6.
86m, depth (L) 5.94m, mass 9.04
t, the empty volume was 34.1 m 3 , and the window area was 3.8 m 2 made of concrete. Further, in the fence, the shielding part has a circular shape with a cross section of 10 mm in diameter (that is, the widths of t a1 and t a2 are both 10 mm), and the widths t b1 and t b2 of the openings are 60 m, respectively.
m, FRP integrally molded product with an area of 21% of the window
To cover 0.8 m 2 .
【００１９】それぞれの海域で設置後２４ヶ月後に本体
のコンクリート表面とフェンス表面に付着した付着生物
と、該付着生物間に生息する微小エビ類の個体数を調べ
た。その結果を下記に示す。尚、フェンス表面について
は、フェンスの表裏についての平均値である。Twenty-four months after installation in each sea area, the number of adherent organisms adhering to the concrete surface of the main body and the surface of the fence and the number of micro shrimp living between the adherent organisms were examined. The results are shown below. In addition, about the fence surface, it is an average value about the front and back of the fence.
【００２０】[0020]
【表１】 [Table 1]
【００２１】上記のように、本体のコンクリート表面に
比べてフェンス表面では、単位面積あたりの付着生物量
が約３倍、微小エビ類の個体数が約２倍であり、フェン
スを用いたことにより、全体の付着生物量及び該付着生
物間に生息する微小エビ類の繁殖効果が向上することが
わかった。[0021] As described above, the amount of attached organisms per unit area is about 3 times and the number of micro shrimps is about 2 times on the surface of the fence as compared to the concrete surface of the main body. It was found that the total amount of attached organisms and the reproductive effect of the shrimps living between the attached organisms were improved.
【００２２】[0022]
【発明の効果】以上説明したように、本発明の魚礁は、
本体及びフェンスの後背面において渦流を形成し、特
に、フェンスの後背面において積極的に小さい渦流を形
成することから、プランクトン類や遊泳アミ類の蝟集効
果が高く、また、フェンスに付着する付着生物及び付着
生物間に生息する微小エビ類の繁殖効果が高いことか
ら、これらプランクトン類や遊泳アミ類、微小エビ類を
餌料とする小型魚類の蝟集、繁殖効果に優れ、さら該小
型魚類を餌料とする大型魚類の蝟集、繁殖効果が高い。As described above, the fish reef of the present invention is
A vortex is formed on the main body and the back surface of the fence, and in particular, a small vortex is positively formed on the back surface of the fence. And because of the high reproductive effect of the small shrimp that inhabit among adherent organisms, these plankton, swimming fish, and small shrimp feeding on these small shrimp are excellent in collecting and reproductive effects. It has a high collection efficiency and breeding effect for large fish.
【図１】本発明の魚礁の一実施形態の斜視図である。FIG. 1 is a perspective view of an embodiment of a fish reef of the present invention.
【図２】本発明の魚礁に取り付けられるフェンスの一例
の部分拡大図である。FIG. 2 is a partially enlarged view of an example of a fence attached to the fish reef of the present invention.
【図３】本発明の魚礁の他の実施形態の斜視図である。FIG. 3 is a perspective view of another embodiment of the fish reef of the present invention.
【図４】従来の魚礁の一例の斜視図である。FIG. 4 is a perspective view of an example of a conventional fish reef.
１ 本体 ２ 側面 ３ 窓部 ４、４ａ、４ｂ フェンス １１ 遮蔽部 １２ 開口部 ４１ 遮蔽板 1 body 2 sides 3 windows 4, 4a, 4b fence 11 Shield 12 openings 41 Shield
Claims (5)
その側面に窓部を有する中空の本体と、該窓部を部分的
に覆って取り付けられた多数の開口部を有するフェンス
とからなることを特徴とする魚礁。1. A hollow main body having a truncated cone shape having a window portion at least on its side surface, and a fence having a large number of openings attached to partially cover the window portion. A fish reef characterized by that.
の比が１：２〜１：２０である請求項１に記載の魚礁。2. The fish reef according to claim 1, wherein the ratio of the width of the shielding portion to the width of the opening of the fence is 1: 2 to 1:20.
子状である請求項１または２に記載の魚礁。3. The fish reef according to claim 1, wherein the shielding portion of the fence has a lattice shape or a ladder shape.
は矩形である請求項１〜３のいずれかに記載の魚礁。4. The fish reef according to claim 1, wherein a cross section of the shielding portion of the fence is circular or rectangular.
はこれらの複合材からなる請求項１〜４のいずれかに記
載の魚礁。5. The fish reef according to claim 1, wherein the fence is made of synthetic resin, steel, or a composite material thereof.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001400552A JP2003199454A (en) | 2001-12-28 | 2001-12-28 | Fish bank |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001400552A JP2003199454A (en) | 2001-12-28 | 2001-12-28 | Fish bank |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2003199454A true JP2003199454A (en) | 2003-07-15 |
Family
ID=27639905
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2001400552A Pending JP2003199454A (en) | 2001-12-28 | 2001-12-28 | Fish bank |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2003199454A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108200881A (en) * | 2018-01-08 | 2018-06-26 | 佛山尘凡环保科技有限公司 | A kind of high-efficiency aquaculture device |
| KR102444022B1 (en) * | 2021-04-27 | 2022-09-21 | 해주이엔씨 (주) | Pyramidal submarine structure |
-
2001
- 2001-12-28 JP JP2001400552A patent/JP2003199454A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108200881A (en) * | 2018-01-08 | 2018-06-26 | 佛山尘凡环保科技有限公司 | A kind of high-efficiency aquaculture device |
| KR102444022B1 (en) * | 2021-04-27 | 2022-09-21 | 해주이엔씨 (주) | Pyramidal submarine structure |
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