JP2012178991A - Rope for mark ball - Google Patents

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JP2012178991A
JP2012178991A JP2011042994A JP2011042994A JP2012178991A JP 2012178991 A JP2012178991 A JP 2012178991A JP 2011042994 A JP2011042994 A JP 2011042994A JP 2011042994 A JP2011042994 A JP 2011042994A JP 2012178991 A JP2012178991 A JP 2012178991A
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rope
ball
trunk
mark ball
reducing means
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Tatsu Yoshida
達 吉田
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AOMORI PREFECTURAL INDUSTRIAL TECHNOLOGY RESEARCHCENTER
Aomori Prefectural Industrial Technology Research Center
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AOMORI PREFECTURAL INDUSTRIAL TECHNOLOGY RESEARCHCENTER
Aomori Prefectural Industrial Technology Research Center
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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

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Abstract

PROBLEM TO BE SOLVED: To provide a rope for a mark ball which prevents a stem rope from being affected by the vibrations of the mark ball which is caused by ocean waves.SOLUTION: The rope 20 for a mark ball is used for attaching the mark ball 14 of a fishery culture facility 10 to a stem rope 12, and includes a rope body 22 and stem rope vibration-reducing means 24 for forming part of the rope body 22. A breakage-preventing rope 26 for preventing the breakage of the stem rope vibration-reducing means 24 is attached to the connection portion between the rope body 22 and the stem rope vibration-reducing means 24. The breakage-preventing rope 26 is formed longer than the stem rope vibration-reducing means 24. Thus, even when the mark ball is vertically moved, the vibration of the mark ball is not transmitted to the stem rope, thus permitting to avoid the mutual collapse of shellfishes in culture baskets due to ocean waves. Hence, the mortality of scallops or the like can be eliminated by the rope 20 for the mark ball, and the scallops or the like good in growth are harvested.

Description

本発明は、漁業用養殖施設の位置および水深を示すために海面に配置する浮玉（目印玉）を幹綱に取り付ける目印玉用ロープに関するものである。   The present invention relates to a marking ball rope for attaching a floating ball (marking ball) to be placed on a trunk to indicate the position and water depth of a fishery aquaculture facility.

ホタテガイの養殖は、所定の水深に設けられる幹綱に垂下した養殖篭（パールネット等）にホタテガイを入れて行われている（図４）。図４のホタテガイ養殖施設１０（中層式の延縄式養殖施設）の幹綱１２は、浮玉（底玉）１３の取り付け数により浮力調整を行い、所定の水深（中層、約８ｍ〜１０ｍ）に配置されている。ホタテガイの餌となるプランクトンは表層に多く存在するため、表層に幹綱１２を配置するのが好ましい。しかし、表層に幹綱１２を配置すると、幹綱１２が波浪の影響を受けて上下に振動し、幹綱１２に垂下する養殖篭１８の中のホタテガイがぶつかり合い、養殖篭１８の中のホタテガイはへい死（斃死）し、また成長不良のものが多く発生することが知られている。そこで、現在のホタテガイ養殖施設１０では、幹綱１２は波浪の影響を受けない中層に配置さている。
また、現在のホタテガイ養殖施設１０では、図４に示すように、養殖施設１０の位置および幹綱１２の水深を目視できるように海面に浮玉１４（本願では「目印玉」という。）を浮遊させている。目印玉１４は、目印玉用ロープ１６を介して幹綱１２に取り付けられている。
ところが、目印玉１４は海面にあるため波浪の影響を受け上下動して、その振動が目印玉用ロープ１６を介して幹綱１２に伝わり、幹綱１２も上下動することから、ホタテガイのへい死（斃死）および成長不良の問題が起こっていた。
現在、台風の影響を受けないよう台風時に養殖施設を沈下させる養殖システムが提供されている（例えば、特許文献１）。 Scallops are cultivated by placing scallops in cultured troughs (such as pearl nets) that are hung on trunks provided at a predetermined water depth (FIG. 4). The trunk rope 12 of the scallop aquaculture facility 10 (middle layer longline aquaculture facility) in FIG. 4 is adjusted to the buoyancy by the number of floating balls (bottom balls) 13 attached, and is adjusted to a predetermined water depth (middle layer, about 8 m to 10 m) Has been placed. Since plankton that is a bait for scallops is present on the surface layer, it is preferable to arrange the trunk rope 12 on the surface layer. However, when the trunk line 12 is arranged on the surface layer, the trunk line 12 vibrates up and down due to the influence of the waves, and the scallops in the cultured tub 18 hanging on the trunk line 12 collide with each other. It is known that many deaths occur (ie, drowning) and poor growth occurs. Therefore, in the current scallop farming facility 10, the trunk rope 12 is arranged in a middle layer that is not affected by waves.
Further, in the current scallop aquaculture facility 10, as shown in FIG. 4, a floating ball 14 (referred to as a “marker ball” in the present application) floats on the sea surface so that the position of the aquaculture facility 10 and the water depth of the trunk line 12 can be seen. I am letting. The landmark ball 14 is attached to the trunk rope 12 via a landmark ball rope 16.
However, since the landmark ball 14 is on the sea surface, it moves up and down due to the influence of waves, and the vibration is transmitted to the trunk rope 12 via the landmark ball rope 16 and the trunk rope 12 also moves up and down. (Dying) and poor growth problems occurred.
Currently, an aquaculture system that sinks aquaculture facilities during a typhoon is provided so as not to be affected by the typhoon (for example, Patent Document 1).

特開２００４−３０５１９７号公報（図１〜３）JP 2004-305197 A (FIGS. 1 to 3)

特許文献１の籠養殖は、台風時に養殖施設（又は幹綱）を水深３０ｍ〜７０ｍの海域に沈下させてその台風による波浪の影響を受けないようにしたものであった。
しかし、特許文献１の籠養殖は台風を避けるための養殖システムであり、台風時以外の波浪によるホタテガイのへい死率と成長不良の課題を解決できるものではなかった。
また、台風とか低気圧通過のたびに作業を行わなければならず、養殖施設の上下に係る労力も多大である。養殖施設を上下させる際には、必ず幹綱を海面まで引き上げて調整を行うので、ホタテガイにも振動等のストレスがかかる。
なお、特許文献１の籠養殖は、水深３０ｍ〜７０ｍの海域に養殖施設（又は幹綱）を沈下されるが、その海域ではプランクトンが乏しくホタテガイを生長させることはできない。 The aquaculture of Patent Document 1 was such that the aquaculture facility (or trunk rope) was submerged in a sea area with a water depth of 30 m to 70 m during a typhoon so as not to be affected by waves caused by the typhoon.
However, salmon farming in Patent Document 1 is an aquaculture system for avoiding typhoons, and cannot solve the problem of scallop mortality and poor growth due to waves other than typhoons.
In addition, work must be performed every time a typhoon or low pressure passes, and the labor involved in up and down the aquaculture facility is also great. When raising and lowering aquaculture facilities, adjustments are always made by lifting the trunk to the sea level, so scallops are also subjected to stress such as vibration.
In addition, in the aquaculture of Patent Document 1, the aquaculture facility (or trunk rope) is submerged in a sea area with a water depth of 30 to 70 m, but in that sea area, plankton is scarce and scallops cannot be grown.

本発明は、上記課題を解決するもので、幹綱が波浪による目印玉の振動の影響を受けないようにした目印玉用ロープを提供することを目的とするものである。   The present invention solves the above-described problems, and an object of the present invention is to provide a marking ball rope in which the trunk rope is not affected by the vibration of the marking ball due to waves.

本発明の目印玉用ロープは、漁業用養殖施設の幹綱に当該施設の位置および水深を示す目印玉を取り付けるものであって、ロープ本体と、ロープ本体の一部を形成する幹綱振動軽減手段とからなるようにしたものである。
また、前記ロープ本体と前記幹綱振動軽減手段の連結部分に幹綱振動軽減手段の切断を防止するための当該幹綱振動軽減手段より長い切断防止用ロープを取り付けるようにしたものである。
また、前記幹綱振動軽減手段が弾性体であるようにしたものである。 The mark ball rope of the present invention attaches a mark ball indicating the position and water depth of the facility to the main rope of a fishery aquaculture facility, and the rope main body and part of the rope main body vibration reduction It consists of means.
Further, a rope for preventing cutting longer than the trunk rope vibration reducing means for preventing cutting of the trunk rope vibration reducing means is attached to a connecting portion of the rope main body and the trunk rope vibration reducing means.
The trunk rope vibration reducing means is an elastic body.

本発明の目印玉用ロープによると、目印玉が上下動しても幹綱には目印玉の振動が伝わらないことから、波浪による養殖篭内の貝同士のぶつかり合いを避けることができる。したがって、本発明により、ホタテガイ等のへい死を無くすことができるとともに、成長の良いホタテガイ等を収穫することが可能となる。   According to the rope for the mark ball of the present invention, even if the mark ball moves up and down, the vibration of the mark ball is not transmitted to the trunk rope, so that it is possible to avoid clashes between the shellfish in the cultured trough due to waves. Therefore, according to the present invention, it is possible to eliminate scallops such as scallops and to harvest scallops with good growth.

本発明の目印玉用ロープの構造を表わす図である。It is a figure showing the structure of the rope for landmark balls of this invention. 本発明の目印玉用ロープを用いたホタテガイ養殖施設における幹綱の上下動を表わす図である。It is a figure showing the vertical movement of the trunk rope in the scallop cultivation facility using the rope for landmarks of the present invention. 従来の目印玉用ロープを用いたホタテガイ養殖施設における幹綱の上下動を表わす図である。It is a figure showing the vertical movement of the trunk rope in the scallop aquaculture facility using the conventional rope for mark balls. 従来のホタテガイ養殖施設（中層式の延縄式養殖施設）を表わす図である。It is a figure showing the conventional scallop culture facility (medium-layer type longline culture facility).

本発明は、波浪による目印玉の上下動が幹綱に伝わらないようにすることを実現するものである。   This invention implement | achieves preventing the vertical motion of the landmark ball by a wave not being transmitted to a trunk rope.

本発明の目印玉用ロープを図１に基づいて説明する。図１は、本発明の目印玉用ロープの構造を表わす図である。なお、図１において、図４と同一の参照番号が付されている構成部は、図４のものと同一である。
図１の目印玉１４は、本発明の目印玉用ロープ２０を介して幹綱１２に取り付けられ、幹綱１２は所定の水深に配置されている。
目印玉用ロープ２０は、ロープ本体２２と、ロープ本体２２の一部を形成する幹綱振動軽減手段２４とからなるものである。幹綱振動軽減手段２４としては伸縮可能なものである、ゴム製のものが好ましいが、これに限るものではなく、バネ等の弾性体など伸縮可能な構造を有するものであればよい。 The mark ball rope of the present invention will be described with reference to FIG. FIG. 1 is a diagram showing the structure of a mark ball rope of the present invention. In FIG. 1, components having the same reference numerals as those in FIG. 4 are the same as those in FIG. 4.
The mark ball 14 of FIG. 1 is attached to the trunk rope 12 via the rope 20 for mark balls of the present invention, and the trunk rope 12 is disposed at a predetermined water depth.
The mark ball rope 20 includes a rope body 22 and trunk rope vibration reducing means 24 that forms a part of the rope body 22. The trunk rope vibration reducing means 24 is preferably made of rubber, which can be expanded and contracted, but is not limited thereto, and may be anything having an expandable structure such as an elastic body such as a spring.

本願発明者は、目印玉用ロープ２０により幹綱の振動が軽減されることについて実験を行った。実験では、幹綱１２に加速度計２８を垂下し、幹綱１２の上下動を測定した。
本実験例では、幹綱振動軽減手段２４として２ｍのゴム製ロープを用い、８ｍの目印玉用ロープ２０を形成した。また、図１のロープ本体２２ａ又は２２ｂとゴム製ロープ２４との連結部分に切断防止用ロープ２６を取り付ける。切断防止用ロープ２６は、ゴム製ロープ２４より長く形成されるものであり、ゴム製ロープ２４の切断を防止するためのものである。これにより、ゴム製ロープ２４が伸びきることはなく、波浪の影響（又は目印玉１４の上下動）によって切断されることはない。実験例では、目印玉用ロープ２０に４ｍの切断防止用ロープ２６を取り付けた。なお、切断防止用ロープ２６の長さは、幹綱振動軽減手段２４を形成するゴムの伸縮性と陸奥湾の波高に基づいて設定する。本実験例では、ゴム製ロープ２４のゴムの伸縮性と陸奥湾の波高に基づいて４ｍに設定した。
比較例は、従来の目印玉用ロープ１６（図４）であり、化学繊維製ロープのみで形成した。
なお、実験施設は、青森県陸奥湾に設置された、図４に示すホタテガイの養殖施設を使用した。また、本実験例は９月から翌年４月にかけて７か月）行ったものである。 This inventor experimented about the vibration of the trunk rope being reduced with the rope 20 for mark balls. In the experiment, the accelerometer 28 was suspended from the trunk rope 12 and the vertical movement of the trunk rope 12 was measured.
In this experimental example, a 2 m rubber rope was used as the trunk rope vibration reducing means 24 to form an 8 m landmark ball rope 20. Moreover, the rope 26 for cutting prevention is attached to the connection part of the rope main body 22a or 22b of FIG. The rope 26 for cutting prevention is formed longer than the rubber rope 24 and is for preventing the rubber rope 24 from being cut. Thereby, the rubber rope 24 does not extend and is not cut by the influence of waves (or the vertical movement of the mark ball 14). In the experimental example, a 4 m cutting prevention rope 26 was attached to the mark ball rope 20. The length of the cutting prevention rope 26 is set based on the elasticity of the rubber forming the trunk rope vibration reducing means 24 and the wave height of Mutsu Bay. In this experimental example, it was set to 4 m based on the elasticity of rubber of the rubber rope 24 and the wave height of Mutsu Bay.
A comparative example is a conventional marking ball rope 16 (FIG. 4), which is formed only of a rope made of chemical fiber.
The experimental facility used was a scallop farming facility installed in Mutsu Bay, Aomori Prefecture, as shown in FIG. In addition, this experimental example was conducted for 7 months from September to April of the following year.

（実験の結果）
１．幹綱の振動について
図２は本発明の目印玉用ロープを用いたホタテガイ養殖施設における幹綱の上下動を表わす図であり、図３は従来の目印玉用ロープを用いた場合の幹綱の上下動を表わす図である。なお、図２および図３は、本実験期間の２月から３月にかけての１か月分の幹綱の上下動を表わすものである。
幹綱１２の上下動は、本発明の目印玉用ロープ２０を用いた場合極めて小さいのに対し（図２）、従来の目印玉用ロープ１６を用いた場合は上下動が非常に大きかった（図３）。したがって、本発明の目印玉用ロープ２０により、波浪の影響又は目印玉１４の振動による幹綱の上下動が軽減されることが分かった。すなわち、波浪による目印玉の上下動が幹綱に伝わらないようにすることができた。 (results of the experiment)
1. FIG. 2 is a diagram showing the vertical movement of the trunk line in the scallop aquaculture facility using the mark ball rope of the present invention, and FIG. 3 is a diagram of the trunk line when the conventional mark ball rope is used. It is a figure showing a vertical motion. 2 and 3 show the vertical movement of the trunk for one month from February to March in the experiment period.
The vertical movement of the trunk line 12 is extremely small when the mark ball rope 20 of the present invention is used (FIG. 2), whereas when the conventional mark ball rope 16 is used, the vertical movement is very large ( FIG. 3). Therefore, it has been found that the mark ball rope 20 of the present invention reduces the vertical movement of the trunk due to the influence of waves or the vibration of the mark ball 14. That is, the vertical movement of the landmark ball caused by the waves could not be transmitted to the trunk.

２．ホタテガイのへい死率、殻長等について
表１は、本発明の目印玉用ロープ２０を用いた場合（実験例）と従来の目印玉用ロープ１６を用いた場合（比較例）のホタテガイのへい死率（％）、異常貝発生率（％）、殻長（ｍｍ）、１個体当たりの全重量（ｇ）、１個体当たりの軟体部重量（ｇ）を表すものである。 2. Table 1 shows scallop mortality, shell length, etc. Table 1 shows the scallop mortality when using the mark ball rope 20 of the present invention (experimental example) and when using the conventional mark ball rope 16 (comparative example). (%), Abnormal shell incidence (%), shell length (mm), total weight per individual (g), and soft body weight (g) per individual.

Figure 2012178991
Figure 2012178991

ホタテガイのへい死率は、本発明の目印玉用ロープ２０を用いた場合２．７％であり、従来の目印玉用ロープ１６を用いた場合の１８．５％に比べて、極めて低かった。したがって、本発明の目印玉用ロープ２０を用いることにより、ホタテガイのへい死をほとんど無くすことができることが分かった。
異常貝発生率は、本発明の目印玉用ロープ２０を用いた場合３．３％であり、従来の目印玉用ロープ１６を用いた場合の４６．２％に比べて、非常に低かった。したがって、本発明の目印玉用ロープ２０を用いることにより、正常なホタテガイを収穫することができることが分かった。
以上のように、本発明の目印玉用ロープ２０により、波浪の影響を回避することができ、ホタテガイの生産量（養殖による生産効率）を高めることができる。 The mortality rate of scallops was 2.7% when the mark ball rope 20 of the present invention was used, which was extremely low compared to 18.5% when the conventional mark ball rope 16 was used. Therefore, it was found that the use of the mark ball rope 20 of the present invention can almost eliminate scallop mortality.
The abnormal shell incidence was 3.3% when using the landmark ball rope 20 of the present invention, which was very low compared to 46.2% when using the conventional landmark ball rope 16. Therefore, it was found that normal scallops can be harvested by using the mark ball rope 20 of the present invention.
As described above, with the landmark ball rope 20 of the present invention, the influence of waves can be avoided, and the production amount of scallops (production efficiency by aquaculture) can be increased.

殻長は、本発明の目印玉用ロープ２０を用いた場合７４．１ｍｍであり、従来の目印玉用ロープ１６を用いた場合の４４．６ｍｍに比べて、大きかった。
１個体当たりの全重量、軟体部重量は、本発明の目印玉用ロープ２０を用いた場合それぞれ４５．３ｇ、１８．５ｇであり、従来の目印玉用ロープ１６を用いた場合の１５．２ｇ、５．６ｇに比べて、重かった。
したがって、本発明の目印玉用ロープ２０を用いることにより、成長の良いホタテガイを収穫することができることが分かった。
以上のように、本発明の目印玉用ロープによれば、へい死が無く、さらには十分に成長した良質のホタテガイを量産することが可能となる。
また、特許文献１の籠養殖とは異なり、台風・低気圧が通過するたびに養殖施設を上下する作業を行う必要がなく、ホタテガイにストレスをかけることもない。また、作業コストや労力も削減できる。 The shell length was 74.1 mm when the mark ball rope 20 of the present invention was used, which was larger than 44.6 mm when the conventional mark ball rope 16 was used.
The total weight and soft body weight per individual are 45.3 g and 18.5 g, respectively, when the landmark ball rope 20 of the present invention is used, and 15.2 g when the conventional landmark ball rope 16 is used. It was heavier than 5.6g.
Therefore, it was found that by using the landmark ball rope 20 of the present invention, scallops with good growth can be harvested.
As described above, according to the mark ball rope of the present invention, it is possible to mass-produce high-quality scallops that are not dead and are sufficiently grown.
Further, unlike salmon farming in Patent Document 1, it is not necessary to move up and down the aquaculture facility every time a typhoon or low pressure passes, and stress is not applied to scallops. In addition, work costs and labor can be reduced.

本発明の目印玉用ロープは、ホタテガイ養殖のみならず中層式の延縄式養殖施設を利用している他の貝類養殖にも応用できるものである。   The mark ball rope of the present invention can be applied not only to scallop aquaculture but also to other shellfish aquaculture utilizing a middle layer longline aquaculture facility.

１０ ホタテガイ養殖施設
１２ 幹綱
１４ 目印玉
２０ 目印玉用ロープ
２２ ロープ本体
２４ 幹綱振動軽減手段
２６ 切断防止用ロープ DESCRIPTION OF SYMBOLS 10 Scallop culture facility 12 Trunk rope 14 Mark ball 20 Mark ball rope 22 Rope body 24 Trunk vibration reduction means 26 Cutting prevention rope

Claims (3)

漁業用養殖施設の幹綱に当該施設の位置および水深を示す目印玉を取り付けるものであって、ロープ本体と、ロープ本体の一部を形成する幹綱振動軽減手段とからなることを特徴とする目印玉用ロープ。 A mark ball indicating the position and water depth of the facility is attached to a main rope of a fishery aquaculture facility, and comprises a rope main body and a main rope vibration reducing means forming a part of the rope main body. A rope for landmark balls. 前記ロープ本体と前記幹綱振動軽減手段の連結部分に幹綱振動軽減手段の切断を防止するための当該幹綱振動軽減手段より長い切断防止用ロープを取り付けることを特徴とする請求項１記載の目印玉用ロープ。 The rope for preventing cutting longer than the trunk rope vibration reducing means for preventing cutting of the trunk rope vibration reducing means is attached to a connecting portion of the rope main body and the trunk rope vibration reducing means. A rope for landmark balls. 前記幹綱振動軽減手段は弾性体であることを特徴とする請求項１又は請求項２記載の目印玉用ロープ。

The landmark ball rope according to claim 1 or 2, wherein the trunk rope vibration reducing means is an elastic body.

JP2011042994A 2011-02-28 2011-02-28 Rope for mark ball Pending JP2012178991A (en)

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Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4966487A (en) * 1972-10-19 1974-06-27
JPS5094197U (en) * 1973-12-28 1975-08-07
JPS5325596U (en) * 1976-08-11 1978-03-04
JPS60234525A (en) * 1984-05-05 1985-11-21 中村　茂 Net for breeding scallop
JPS62179328A (en) * 1986-02-01 1987-08-06 大洋エンジニヤリング株式会社 Spring cord
JPH0293959U (en) * 1989-01-17 1990-07-26
JPH0331849U (en) * 1989-08-08 1991-03-28

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4966487A (en) * 1972-10-19 1974-06-27
JPS5094197U (en) * 1973-12-28 1975-08-07
JPS5325596U (en) * 1976-08-11 1978-03-04
JPS60234525A (en) * 1984-05-05 1985-11-21 中村　茂 Net for breeding scallop
JPS62179328A (en) * 1986-02-01 1987-08-06 大洋エンジニヤリング株式会社 Spring cord
JPH0293959U (en) * 1989-01-17 1990-07-26
JPH0331849U (en) * 1989-08-08 1991-03-28

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