JP3792170B2 - Artificial spawning bed for squid - Google Patents

Artificial spawning bed for squid Download PDF

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Publication number
JP3792170B2
JP3792170B2 JP2002097922A JP2002097922A JP3792170B2 JP 3792170 B2 JP3792170 B2 JP 3792170B2 JP 2002097922 A JP2002097922 A JP 2002097922A JP 2002097922 A JP2002097922 A JP 2002097922A JP 3792170 B2 JP3792170 B2 JP 3792170B2
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Prior art keywords
squid
spawning
room
laying
chamber
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JP2002097922A
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JP2003284445A (en
Inventor
恭弘 山口
一夫 深堀
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KASUTANI FISHING NET MFG.CO.,LTD.
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KASUTANI FISHING NET MFG.CO.,LTD.
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    • 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

Description

【０００１】
【発明の属する技術分野】
本発明は、卵を海底の構造物に直接産み付ける習性のあるイカ類例えばアオリイカやコウイカを対象し、沿岸に時期的に産卵のために来遊するイカ類の増殖を行うのに使用するイカ類用人工産卵床に関するものである。
【０００２】
【従来の技術】
従来のイカ用産卵床の産卵するための場所（産卵基質）は、天然の照葉樹の葉付の小枝あるいはコンクリート製であった。
【０００３】
【発明が解決しようとする課題】
しかしながら、従来の技術では照葉樹が通常１〜２ヶ月で落葉および基質の腐食のため、産卵床として機能しなくなり、腐る前に流れ出すと定置網や刺し網などにかかり破網の原因になった。また、コンクリート製基質は投入後漁場に放置されることで回収および管理が煩雑であり、さらに広範囲に本基質を投入すると漁場としての利用価値が低下する。
【０００４】
本発明は、上記のような課題に鑑み、その課題を解決すべく創案されたものであって、その目的とするところは、腐らない漁網やロープを使用し、その形状を保つのに軽くて組立て簡単なプラスチック網を使用することで、照葉樹に匹敵する産卵量の確保と設置・回収および回収後の管理を容易にすることのできるイカ類用人工産卵床を提供することにある。
【０００６】
【課題を解決するための手段】
以上の目的を達成するために、本発明の請求項１は、イカの産卵期に親イカが来遊する場所に、軽量のプラスチック製の帯状ネットが放射状に配置され且つ放射状の各帯状ネットが筒状の枠に成型されてその内部に形成されるイカ産卵室を設置し、各イカ産卵室内にイカの卵が産み付けられる耐蝕性の産卵基質材を茂み状に取り付け、放射状の各イカ産卵室の上面側に該イカ産卵室内を影部分にする日除けカバー用シートを取り付けた手段よりなるものである。
【０００７】
また、本発明の請求項２は、イカの産卵期に親イカが来遊する場所に、軽量のプラスチック製の帯状ネットを箱形の枠に成型してその内部に形成されるイカ産卵室を設置し、イカ産卵室内にイカの卵が産み付けられる耐蝕性の産卵基質材を茂み状に取り付け、イカ産卵室の上面側に該イカ産卵室内を影部分にする日除けカバー用シートを取り付けた手段よりなるものである。
【０００８】
また、本発明の請求項３は、イカの産卵期に親イカが来遊する場所に、軽量のプラスチック製の帯状ネットを筒状の枠に成型してその内部に形成されるイカ産卵室を設置し、イカ産卵室内にイカの卵が産み付けられる耐蝕性の産卵基質材を茂み状に取り付け、イカ産卵室の上面側に該イカ産卵室内を影部分にする日除けカバー用シートを取り付けた手段よりなるものである。
【０００９】
ここで、請求項１〜請求項３の発明の好ましい態様として、産卵基質材は、耐蝕性のロープ又は綱からなる。
【００１０】
【発明の実施の形態】
以下、図面に記載の発明の実施の形態に基づいて、本発明をより具体的に説明する。
【００１１】
図１〜図４において、イカ類用人工産卵床１は、卵を海底の構造物に直接産み付ける習性のあるイカ類例えばアオリイカやコウイカを対象し、沿岸に時期的に産卵のために来遊するイカ類の増殖を行うために使用されるもので、イカの産卵期に親イカが来遊する場所の海底に設置されて使用される。
【００１２】
図１及び図２に図示するイカ類用人工産卵床１は、軽量のプラスチック製の帯状ネット２ａが放射状に配置され且つ放射状の各帯状ネット２ａが筒状の枠に成型されてその内部に形成されるイカ産卵室２、各イカ産卵室２内に茂み状に取り付けられイカの卵が産み付けられる耐蝕性の産卵基質材３、放射状の各イカ産卵室２の上面側に取り付けられ該イカ産卵室２内を影部分にする日除けカバー用シート４から構成される。
【００１３】
図１及び図２に図示するイカ類用人工産卵床１は、平面から見て軽量のプラスチック製の帯状ネット２ａが放射状例えば十字状に配置されている。十字状に配置された帯状ネット２ａはそれぞれ筒状に曲げられて筒状の枠が成型されていて、筒状の枠の両端側は開口されている。この帯状ネット２ａで成型される筒状の枠の内部にイカ産卵室２が形成されている。帯状ネット２ａは例えばハニカム構造からなっている。
【００１４】
図１及び図２に図示するイカ類用人工産卵床１の帯状ネット２ａの幅は、その内部のイカ産卵室２内に産卵するイカの足の長さの２倍程度である。開口された筒状の枠の両側からそれぞれイカが産卵のために足を入れた場合に、それぞれのイカの足が当たらない程度の幅となっている。これは帯状ネット２ａの幅がそれ以上長い場合には、イカの足が届かない中央部分には産卵されず、その一方、幅が大きくなる分、イカ類用人工産卵床１が大きくなり、不経済的となるのを回避するためである。
【００１５】
また、図１及び図２に図示するようにイカ産卵室２が放射状に配置されている場合には、産卵するイカはこの両面の開口部分から内部のイカ産卵室２内に足を入れて、内部の産卵基質材３に卵を産み付ける。産卵するイカは放射状の各イカ産卵室２の両側の開口部分を利用して産卵するので、イカ産卵室２が十字状に配置されている場合には、８箇所の開口部分が存在することになって、効率良く産卵することが可能となる。
【００１６】
図３に図示するイカ類用人工産卵床１は、軽量のプラスチック製の帯状ネット２ａを箱形の枠に成型してその内部に形成されるイカ産卵室２、各イカ産卵室２内に茂み状に取り付けられイカの卵が産み付けられる耐蝕性の産卵基質材３、放射状の各イカ産卵室２の上面側に取り付けられ該イカ産卵室２内を影部分にする日除けカバー用シート４から構成される。
【００１７】
図３に図示するイカ類用人工産卵床１は、耐蝕性のプラスチック製の軽量の棒状枠フレーム２ｂにより箱形の骨組が構成され、その４側面に帯状ネット２ａが取り付けられている。イカ産卵室２は箱形の内部に形成されている。産卵するイカはこの４側面から内部のイカ産卵室２内に足を入れて、内部の産卵基質材３に卵を産み付ける。帯状ネット２ａは棒状枠フレーム２ｂにロープなどによって連結されている。帯状ネット２ａは例えばハニカム構造からなっている。
【００１８】
図４に図示するイカ類用人工産卵床１は、軽量のプラスチック製の帯状ネット２ａを筒状の枠に成型してその内部に形成されるイカ産卵室２、各イカ産卵室２内に茂み状に取り付けられイカの卵が産み付けられる耐蝕性の産卵基質材３、放射状の各イカ産卵室２の上面側に取り付けられ該イカ産卵室２内を影部分にする日除けカバー用シート４から構成される。
【００１９】
図４に図示するイカ類用人工産卵床１は、帯状ネット２ａが筒状に曲げられて筒状の枠が成型されていて、筒状の枠の両端側は開口されている。この帯状ネット２ａで成型される筒状の枠の内部にイカ産卵室２が形成されている。産卵するイカはこの両面の開口部分から内部のイカ産卵室２内に足を入れて、内部の産卵基質材３に卵を産み付ける。帯状ネット２ａは例えばハニカム構造からなっている。
【００２０】
図１〜図４に図示する産卵基質材３は、後述するように、沿岸性のイカ類が本来卵をアマモやホンダワラなどの水生植物の幹に当たる部分に産み付ける習性があるのを利用したもので、アマモやホンダワラなどの水生植物の幹に当たる部分を人工的に造り出したものである。産卵基質材３には腐らないロープや魚網が使用される。産卵基質材３として使用されるロープや魚網の直径は、水生植物の幹の太さと同じ程の大きさであり、又卵が産み付け易いようにその材質表面の粗度がある程度必要であり、ロープや魚網はこの条件を満たしている。
【００２１】
また、ロープや魚網が使用される産卵基質材３は、イカ産卵室２内に茂み状につまり密に取り付けられていて、イカ産卵室２内の空間密度が高められており、より多くの産卵ができるようになっている。これによりイカの増殖を高めることが可能となっている。
【００２２】
図１、図３及び図４に図示するように、産卵基質材３が茂み状に取り付けられたイカ産卵室２の上面には、これを覆うように日除けカバー用シート４が取り付けられている。日除けカバー用シート４には例えば黒色シートが使用される。イカ産卵室２内に太陽光線が届くのを防いで、イカ産卵室２内に影部分を造るためである。これはイカが影部分つまり低照度で産卵する習性を利用したものである。
【００２３】
次に、上記発明の実施の形態の構成に基づく作用について以下説明する。
沿岸性のイカ類は本来卵をアマモやホンダワラなどの水生植物の幹に当たる部分に産み付ける習性がある。本発明は前述の既往の知見に加えイカ類の産卵が次に示すような条件で行われるという発明者の一人の知見を応用し、開発したものである。本種は海底付近の円柱状の直立あるいは海底に平行な物体に産み付ける習性があり、それらが周囲より相対的に低照度な場所であり、一定の直径の基質であること、基質相互の距離がイカの腕程度であること、材質表面の粗度がある程度必要であること、汚れや腐食が激しくないこと等と要約できる。
【００２４】
産卵基質材３にプラスチック網と漁網やロープを使用することで、水生植物の幹に相当する部分と同程度の直径が選択でき、合成繊維であるため腐食がなく、硬質プラスチック網で成型したイカ産卵室２の例えば放射状および円柱状の枠の上部に、日除けカバー用シート４としての例えば黒色シートを配することで、イカ産卵室２内の産卵基質材３の各基質部分を低照度に保てるなど、天然の産卵基質が有する産卵に必要な特性を漁具資材により人工的に再現できた。腐敗しないことから産卵期間の延長で産卵育成の効果を従来のものより飛躍的に高めることが出来た。また、解体も容易であるため産卵期終了後は回収し低容積で収納でき、次期に使用できる。また、資材が漁具であるため軽くて組立て簡単なため、設置および撤去作業が手軽にでき、管理が容易である。
【００２５】
【実施例】
幅１．２ｍ×高さ０．３５ｍ十字形のプラスチック網を使用し、形状を保つ。上部には、日除けカバー用シート４としての黒い幕を張り、内部のイカ産卵室２に影が出来るようにする。イカ産卵室２の内部空間にロープや漁網からなる産卵基質材３を取り付け、又産卵基質材３を茂み状に取り付けて空間密度を上げる。対象海域で本発明と従来の木を使用したイカ用産卵床を５ヶ月間設置し比較した。水深は３ｍから１４ｍで内海や外洋に開けた湾内など数箇所に設置した。
【００２６】
なお、本発明は上記発明の実施の形態に限定されるものではなく、本発明の精神を逸脱しない範囲で種々の改変をなし得ることは勿論である。イカ類用人工産卵床は、必要に応じて両端にブイを配置し幹縄で連結することも可能である。
【００２７】
【発明の効果】
以上の記載より明らかなように、本発明に係るイカ類用人工産卵床によれば、実施海域において、本発明にはアオリイカやコウイカ類の産卵が多数みられ、従来の照葉樹の束と比較しても、産卵量（単位容積あたり）は２倍以上に達した。また、照葉樹が２ヶ月で効果が消失するのに対して、本発明のイカ類用人工産卵床では４ヶ月以上と産卵される期間が長いことが分かった。また、設置作業や撤去作業も従来のものより作業性がよく、簡単に折り畳めることから保管でき繰り返し使用できる等、極めて新規的有益なる効果を奏するものである。
【図面の簡単な説明】
【図１】本発明の実施の形態−１を示すイカ類用人工産卵床の斜視図である。
【図２】本発明の実施の形態−１を示すイカ類用人工産卵床の帯状ネットの斜視図である。
【図３】本発明の実施の形態−２を示すイカ類用人工産卵床の斜視図である。
【図４】本発明の実施の形態−３を示すイカ類用人工産卵床の斜視図である。
【符号の説明】
１ イカ類用人工産卵床
２ イカ産卵室
２ａ 帯状ネット
２ｂ 棒状枠フレーム
３ 産卵基質材
４ 日除けカバー用シート[0001]
BACKGROUND OF THE INVENTION
The present invention is intended for squids that are used to propagate squids that come on the coast for the purpose of laying eggs on the coast, targeting squids that have the habit of directly laying eggs on the seafloor structure, such as squid and cuttlefish. It relates to artificial spawning beds.
[0002]
[Prior art]
The place (spawning substrate) for laying eggs in the conventional squid spawning bed is made of natural twigs with leaves or concrete.
[0003]
[Problems to be solved by the invention]
However, in the conventional technology, terrestrial trees usually fall within 1 to 2 months and do not function as a spawning bed due to deciduous and substrate corrosion, and if they flow before rotting, they hit a stationary net or a stabbed net, causing broken nets. In addition, since the concrete substrate is left in the fishing ground after being thrown in, it is complicated to collect and manage, and when the substrate is thrown into a wide range, the utility value as a fishing ground is lowered.
[0004]
The present invention has been devised to solve the above problems in view of the above problems, and the object of the present invention is to use fishing nets and ropes that do not rot, and to keep their shapes light. It is an object to provide an artificial spawning bed for squid that can secure a spawning amount comparable to that of a terrestrial tree and can easily install / recover and manage it after recovery by using a plastic net that is easy to assemble.
[0006]
[Means for Solving the Problems]
In order to achieve the above object, claim 1 of the present invention is characterized in that light plastic belt-like nets are radially arranged in a place where a parent squid comes to play during the squid spawning period, and each of the radial belt-like nets is a cylinder. Each squid spawning room is a squid spawning chamber that is molded into a frame and is formed inside, and a corrosion-resistant spawning substrate material on which squid eggs are laid is attached in a bush shape. And a means for attaching an awning cover sheet that shadows the squid spawning chamber.
[0007]
Moreover, claim 2 of the present invention provides a squid spawning room formed in a box-shaped frame by molding a light plastic belt-like net at a place where a parent squid comes to play during the squid spawning season. And a means of attaching a corrosion-resistant egg-laying substrate material in which the squid eggs are laid in the squid spawning chamber in a bush shape, and attaching a awning cover sheet that shades the squid spawning chamber on the upper surface side of the squid spawning chamber It will be.
[0008]
Further, according to claim 3 of the present invention, a squid spawning room is formed at a place where a parent squid visits during the squid spawning season by forming a lightweight plastic strip net into a cylindrical frame. And a means of attaching a corrosion-resistant egg-laying substrate material in which the squid eggs are laid in the squid spawning chamber in a bush shape, and attaching a awning cover sheet that shades the squid spawning chamber on the upper surface side of the squid spawning chamber It will be.
[0009]
Here, as a preferred embodiment of the inventions of claims 1 to 3 , the egg-laying substrate material is made of a corrosion-resistant rope or rope.
[0010]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, the present invention will be described more specifically based on the embodiments of the invention described in the drawings.
[0011]
1 to 4, the artificial laying bed 1 for squids targets squids that have the habit of directly laying eggs on the structure of the seabed, such as squid and cuttlefish, and squids that come to the coast for spawning at times. It is used for breeding mosses, and is used by being installed on the seabed where the parent squid visits during the squid spawning season.
[0012]
The artificial laying bed 1 for squids shown in FIGS. 1 and 2 is formed with a light plastic belt-like net 2a arranged radially, and each radial belt-like net 2a is molded into a cylindrical frame. Squid spawning chamber 2, each squid spawning chamber 2 is attached to the squid spawning chamber 2 in a bush-like manner and a corrosion-resistant egg-laying substrate 3 on which the squid eggs are laid, and each squid spawning chamber 2 is attached to the upper surface of each squid spawning chamber It is comprised from the shade cover sheet | seat 4 which makes the chamber 2 the shadow part.
[0013]
The artificial laying bed 1 for squid shown in FIG. 1 and FIG. 2 has light-weight plastic belt-like nets 2a arranged radially, for example, in a cross shape when viewed from above. The belt-like nets 2a arranged in a cross shape are each bent into a cylindrical shape to form a cylindrical frame, and both ends of the cylindrical frame are opened. A squid spawning chamber 2 is formed inside a cylindrical frame formed by the belt-like net 2a. The band-shaped net 2a has a honeycomb structure, for example.
[0014]
The width of the band-shaped net 2a of the squid artificial spawning bed 1 shown in FIGS. 1 and 2 is about twice the length of the squid legs that lay eggs in the squid spawning chamber 2. When the squid puts its legs for spawning from both sides of the opened cylindrical frame, the width is such that each squid's legs do not hit. This is because when the width of the belt-like net 2a is longer than that, the egg is not spawned in the central portion where the squid feet cannot reach, whereas the artificial spawning bed 1 for the squid is enlarged due to the increased width. This is to avoid becoming economical.
[0015]
In addition, when the squid spawning chamber 2 is radially arranged as shown in FIGS. 1 and 2, the squid to lay eggs put its legs into the squid spawning chamber 2 inside from the openings on both sides, Eggs are laid on the internal egg-laying substrate 3. Since the squid that lays eggs lays eggs using the openings on both sides of each squid laying room 2 in a radial manner, there are eight opening parts when the squid laying room 2 is arranged in a cross shape. It becomes possible to lay eggs efficiently.
[0016]
The artificial laying bed 1 for squids shown in FIG. 3 is a squid spawning room 2 formed inside a box-shaped frame by molding a light plastic belt-like net 2a, and bushes in each squid spawning room 2 It is composed of a corrosion-resistant egg-laying substrate material 3 on which the squid eggs are laid and a awning cover sheet 4 which is attached to the upper surface side of each of the radial squid egg chambers 2 and shadows the inside of the squid egg chamber 2 Is done.
[0017]
The artificial laying bed 1 for squid shown in FIG. 3 is formed of a box-shaped frame by a light-weight rod-shaped frame 2b made of corrosion-resistant plastic, and a belt-like net 2a is attached to four side surfaces thereof. The squid spawning room 2 is formed inside a box. The squid that lays eggs puts its legs into the squid spawning chamber 2 from these four sides, and lays eggs on the laying substrate material 3 inside. The belt-like net 2a is connected to the rod-like frame 2b by a rope or the like. The band-shaped net 2a has a honeycomb structure, for example.
[0018]
The artificial laying bed 1 for squids shown in FIG. 4 is formed by forming a light plastic belt-like net 2a into a cylindrical frame and forming a squid spawning room 2 formed therein, and a bush in each squid spawning room 2 It is composed of a corrosion-resistant egg-laying substrate material 3 on which the squid eggs are laid and a awning cover sheet 4 which is attached to the upper surface side of each of the radial squid egg chambers 2 and shadows the inside of the squid egg chamber 2 Is done.
[0019]
The artificial laying bed 1 for squid shown in FIG. 4 has a belt-shaped net 2a bent into a cylindrical shape to form a cylindrical frame, and both ends of the cylindrical frame are open. A squid spawning chamber 2 is formed inside a cylindrical frame formed by the belt-like net 2a. The squid that lays eggs puts its legs into the internal squid spawning chamber 2 through the openings on both sides, and lays eggs on the internal laying substrate material 3. The band-shaped net 2a has a honeycomb structure, for example.
[0020]
The egg-laying substrate material 3 shown in FIGS. 1 to 4 utilizes the fact that coastal squids have the habit of naturally laying eggs on the trunks of aquatic plants such as sea lions and hondawalas, as will be described later. This is an artificially created part that corresponds to the trunk of aquatic plants such as sea lions and hondawala. The spawning substrate material 3 is made of a rope or fish net that does not rot. The diameter of the rope or fish net used as the egg-laying substrate material 3 is about the same size as the thickness of the trunk of the aquatic plant, and the surface of the material must have a certain degree of roughness so that eggs can be easily laid. Rope and fishnets meet this requirement.
[0021]
In addition, the egg-laying substrate material 3 in which ropes and fishnets are used is attached to the squid spawning room 2 in a bush shape, that is, densely, and the spatial density in the squid spawning room 2 is increased, so that more eggs are laid. Can be done. This makes it possible to increase the growth of squid.
[0022]
As shown in FIGS. 1, 3, and 4, an awning cover sheet 4 is attached to an upper surface of the squid spawning chamber 2 to which the egg-laying substrate material 3 is attached in a bush shape. For example, a black sheet is used as the awning cover sheet 4. This is because the sun rays are prevented from reaching the squid spawning room 2 and a shadow portion is formed in the squid spawning room 2. This uses the habit of spawning squid with shadows, that is, low illumination.
[0023]
Next, the operation based on the configuration of the embodiment of the invention will be described below.
Coastal squids have the habit of laying eggs on the part of aquatic plants such as sea lions and hondawala. The present invention has been developed by applying the knowledge of one of the inventors that squid laying is performed under the following conditions in addition to the above-mentioned knowledge. This species has the habit of laying on cylindrical upright objects near the sea floor or objects parallel to the sea floor, where they are relatively low illuminance locations, and are substrates of a certain diameter, and the distance between the substrates is It can be summarized that it is about the squid arm, the surface roughness of the material is required to some extent, and the dirt and corrosion are not severe.
[0024]
By using plastic nets, fishing nets and ropes for the egg-laying substrate material 3, it is possible to select the same diameter as the part corresponding to the trunk of aquatic plants, and since it is a synthetic fiber, it is not corroded and is formed from a hard plastic net. Each substrate portion of the egg-laying substrate material 3 in the squid egg-laying chamber 2 can be kept at a low illuminance by arranging, for example, a black sheet as the awning cover sheet 4 on the upper part of the radial and cylindrical frame in the egg-laying chamber 2. The characteristics necessary for egg-laying of natural egg-laying substrates were artificially reproduced by fishing gear materials. Because it does not rot, the spawning period can be greatly enhanced by extending the egg-laying period. In addition, since it is easy to disassemble, it can be recovered and stored in a low volume after the spawning period and used in the next period. Also, since the material is fishing gear, it is light and easy to assemble, so installation and removal can be done easily and management is easy.
[0025]
【Example】
Use a cruciform plastic net of width 1.2m x height 0.35m to keep the shape. A black curtain as an awning cover sheet 4 is placed on the upper part so that a shadow is formed on the squid spawning chamber 2 inside. A spawning substrate material 3 made of a rope or a fishing net is attached to the internal space of the squid spawning chamber 2, and the spawning substrate material 3 is attached in a bush shape to increase the spatial density. A squid spawning bed using the present invention and a conventional tree was installed for 5 months in the target sea area and compared. The water depth was 3m to 14m, and it was installed in several places, such as the inland sea and the bay opened to the open ocean.
[0026]
It should be noted that the present invention is not limited to the embodiment of the invention described above, and various modifications can be made without departing from the spirit of the invention . Artificial egg-laying beds for squids can be connected with trunks by placing buoys at both ends as necessary.
[0027]
【The invention's effect】
As is clear from the above description, according to the artificial spawning bed for squids according to the present invention, in the sea area where the present invention is practiced, a large number of spawning squids and cuttlefishes are found in the present invention, compared with a bundle of conventional laurel trees. Even so, egg production (per unit volume) has more than doubled. In addition, it was found that the effect of laurel trees disappears in 2 months, whereas the artificial laying bed for squids of the present invention has a long egg-laying period of 4 months or more. In addition, the installation work and the removal work are more workable than the conventional ones, and since they can be easily folded, they can be stored and used repeatedly.
[Brief description of the drawings]
FIG. 1 is a perspective view of an artificial spawning bed for squid showing Embodiment-1 of the present invention.
FIG. 2 is a perspective view of a belt-like net of an artificial spawning bed for squid showing Embodiment-1 of the present invention.
FIG. 3 is a perspective view of an artificial spawning bed for squid showing Embodiment-2 of the present invention.
FIG. 4 is a perspective view of an artificial spawning bed for squid showing Embodiment-3 of the present invention.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Artificial spawning bed for squid 2 Squid spawning room 2a Strip net 2b Rod frame 3 Spawning substrate material 4 Awning cover sheet

Claims (4)

イカの産卵期に親イカが来遊する場所に、軽量のプラスチック製の帯状ネットが放射状に配置され且つ放射状の各帯状ネットが筒状の枠に成型されてその内部に形成されるイカ産卵室を設置し、各イカ産卵室内にイカの卵が産み付けられる耐蝕性の産卵基質材を茂み状に取り付け、放射状の各イカ産卵室の上面側に該イカ産卵室内を影部分にする日除けカバー用シートを取り付けたことを特徴とするイカ類用人工産卵床。  A squid spawning room is formed in a place where a light plastic strip net is radially arranged and a radial strip net is molded into a cylindrical frame in a place where a parent squid visits during the squid spawning season. Install and install a corrosion-resistant egg-laying substrate material in the form of bushes to allow squid eggs to be laid in each squid spawning room, and cover the awning room with a shaded area on the top side of each squid spawning room. An artificial spawning bed for squids, characterized by the fact that it is attached. イカの産卵期に親イカが来遊する場所に、軽量のプラスチック製の帯状ネットを箱形の枠に成型してその内部に形成されるイカ産卵室を設置し、イカ産卵室内にイカの卵が産み付けられる耐蝕性の産卵基質材を茂み状に取り付け、イカ産卵室の上面側に該イカ産卵室内を影部分にする日除けカバー用シートを取り付けたことを特徴とするイカ類用人工産卵床。  At the place where the parent squid visits during the squid spawning season, a lightweight plastic band net is molded into a box-shaped frame and a squid spawning room is formed inside the squid spawning room. An artificial spawning bed for squid, wherein a corrosive-resistant spawning substrate material to be laid is attached in a bush shape, and a awning cover sheet that shadows the squid spawning chamber is attached to the upper surface side of the squid spawning chamber. イカの産卵期に親イカが来遊する場所に、軽量のプラスチック製の帯状ネットを筒状の枠に成型してその内部に形成されるイカ産卵室を設置し、イカ産卵室内にイカの卵が産み付けられる耐蝕性の産卵基質材を茂み状に取り付け、イカ産卵室の上面側に該イカ産卵室内を影部分にする日除けカバー用シートを取り付けたことを特徴とするイカ類用人工産卵床。  In the squid spawning season, a squid spawning room is formed by molding a lightweight plastic belt net into a cylindrical frame at the place where the parent squid visits, and the squid eggs are placed inside the squid spawning room. An artificial spawning bed for squid, wherein a corrosive-resistant spawning substrate material to be laid is attached in a bush shape, and a awning cover sheet that shadows the squid spawning chamber is attached to the upper surface side of the squid spawning chamber. 産卵基質材は、耐蝕性のロープ又は綱からなる請求項１〜請求項３の何れかに記載のイカ類用人工産卵床。The artificial egg-laying bed for squids according to any one of claims 1 to 3 , wherein the egg-laying substrate material comprises a corrosion-resistant rope or rope.
JP2002097922A 2002-03-29 2002-03-29 Artificial spawning bed for squid Expired - Lifetime JP3792170B2 (en)

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CN102501497A (en) * 2011-10-26 2012-06-20 浙江海洋学院 Squid oviposition attaching base material and coating structure

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CN100394847C (en) * 2005-11-09 2008-06-18 中国海洋大学 Sea grape egg adhesion reef with reticular soft structure
CN100358418C (en) * 2006-03-21 2008-01-02 中国海洋大学 Inkfish spawning reef
CN102919166A (en) * 2011-08-12 2013-02-13 湛江师范学院 Artificial egg taking method for sepia pharaonis
CN102823529B (en) * 2012-09-17 2014-02-26 湛江师范学院 Sepia lycidas fry breeding method
CN111903572B (en) * 2020-07-20 2021-12-07 浙江省海洋水产研究所 Cage type cuttlefish egg laying attachment base
CN112243902B (en) * 2020-09-08 2022-02-18 浙江省海洋水产研究所 Attach ovum rope formula cuttlefish attachment device that lays eggs

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Publication number Priority date Publication date Assignee Title
CN102501497A (en) * 2011-10-26 2012-06-20 浙江海洋学院 Squid oviposition attaching base material and coating structure
CN102501497B (en) * 2011-10-26 2014-12-31 浙江海洋学院 Squid oviposition attaching base material and coating structure

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