JPH0622412B2 - Fish farming method - Google Patents
Fish farming methodInfo
- Publication number
- JPH0622412B2 JPH0622412B2 JP63066070A JP6607088A JPH0622412B2 JP H0622412 B2 JPH0622412 B2 JP H0622412B2 JP 63066070 A JP63066070 A JP 63066070A JP 6607088 A JP6607088 A JP 6607088A JP H0622412 B2 JPH0622412 B2 JP H0622412B2
- Authority
- JP
- Japan
- Prior art keywords
- sound
- fish
- predetermined frequency
- ranch
- cultured fish
- 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 - Fee Related
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)
Description
【発明の詳細な説明】 〔産業上の利用分野〕 本発明は、マダイやヒラメなどを大規模な海洋牧場にお
いて養殖する魚類の養殖方法に関する。TECHNICAL FIELD The present invention relates to a method for culturing fish such as red sea bream and flounder cultivated in a large-scale marine farm.
〔従来の技術〕 従来、海洋牧場において大規模養殖を行う場合、養殖魚
の海洋牧場からの脱出を防止するために、様々な手法が
採られており、最も一般的には、網を用いる手法がある
が、これは網自体が風浪によつて損傷し易く、網の保
守，維持に多大な労力と費用とを要するため、最近では
網を用いることなく、魚類に対する威嚇効果を利用する
手法が考えられている。[Prior Art] Conventionally, when large-scale aquaculture is performed in an ocean ranch, various methods have been adopted to prevent escape of cultured fish from the marine ranch, and most commonly, a method using a net is used. However, this is because the net itself is easily damaged by wind and waves, and it requires a lot of labor and cost to maintain and maintain the net. Therefore, recently, a method of utilizing the threatening effect on fish without using the net has been considered. Has been.
その１例として、音を利用する手法があり、これは水中
において、ある周波数の音を発生させて魚類を威嚇し、
養殖魚の海洋牧場からの脱出を防止するものである。As one example, there is a method of using sound, which threatens fish by generating sound of a certain frequency in water,
It prevents the escape of farmed fish from marine farms.
ところが、水中に音波を長時間発生させていると、環境
音として魚類に慣れが生じ、魚類に対する威嚇効果が薄
れ、養殖魚の海洋牧場からの脱出を十分にかつ確実に防
止することができないという問題点がある。However, when sound waves are generated in water for a long time, the fish become accustomed as environmental sounds, the threatening effect on the fish is diminished, and it is not possible to sufficiently and reliably prevent the escape of cultured fish from the marine ranch. There is a point.
そこで、本発明は前記の点に留意してなされ、音の威嚇
効果の薄れを防止し、養殖魚の海洋牧場からの脱出を確
実に防止できるようにすることを目的とする。Therefore, the present invention has been made in view of the above points, and an object of the present invention is to prevent the threatening effect of sound from being weakened and to prevent escape of cultured fish from the marine ranch with certainty.
前記課題を解決するために、本発明の魚類の養殖方法
は、入江などにより形成された海洋牧場内に形成され，
両側に平行な電極，一側に開閉自在の扉を有し，他側が
閉塞された学習用のいけすにおいて、放牧前に養殖魚
に、前記両電極による電気刺激とスピーカによる所定周
波数の音を同時に所定期間与え、そののち、前記養殖魚
を前記海洋牧場に放牧し、前記海洋牧場と外海との出入
口に相当する遊泳遮断部に、該遊泳遮断部の両側の水中
スピーカにより前記所定周波数の音をスクリーン状に発
生させることを特徴とするものである。In order to solve the above-mentioned problems, the method for aquaculture of fish of the present invention is formed in an ocean ranch formed by an inlet,
Electrodes parallel to both sides, with a door that can be opened and closed on one side, and the other side closed, for studying, a cultured fish before grazing, at the same time, electrical stimulation by both electrodes and sound of a predetermined frequency by a speaker Giving the cultured fish for a predetermined period of time, and then grazing the farmed fish on the marine ranch, to the swimming block corresponding to the entrance and exit of the marine ranch and the open sea, the sound of the predetermined frequency by the underwater speakers on both sides of the swimming block. It is characterized in that it is generated like a screen.
したがつて、本発明によると、放牧前の養殖魚に対し、
学習用のいけす(3)内において電気刺激と所定周波数の
音が同時に所定期間与え続けられ、放牧前の養殖魚が、
前記所定周波数の音のあるところに電気刺激があること
を学習するため、学習後に、養殖魚を、遊泳遮断部(2)
に前記所定周波数の音をスクリーン状に発生させた海洋
牧場(1)に放牧しても、養殖魚は前記所定周波数の音を
忌避して遊泳遮断部(2)に接近することがなく、従来の
ような音の威嚇効果の薄れが防止される。Therefore, according to the present invention, for cultivated fish before grazing,
The electrical stimulation and the sound of a predetermined frequency are continuously given for a predetermined period at the same time in the learning bowl (3), and the cultured fish before grazing is
In order to learn that there is electrical stimulation where there is a sound of the predetermined frequency, after learning, the cultured fish is placed in the swimming block (2).
Even when grazing on the marine ranch (1) that generated the sound of the predetermined frequency in a screen form, the cultured fish does not approach the swimming block (2) by avoiding the sound of the predetermined frequency, It is possible to prevent the intimidating effect of the sound like.
つぎに、本発明を、その実施例を示した図面とともに詳
細に説明する。Next, the present invention will be described in detail with reference to the drawings showing the embodiments.
まず、１実施例を示した第１図ないし第６図について説
明する。First, FIGS. 1 to 6 showing one embodiment will be described.
海洋牧場の概略を示す第２図において、(1)は入り江な
どに形成された海洋牧場、(2)は海洋牧場(1)の外海との
出入口に相当する遊泳遮断部、(3)は海洋牧場(1)内に形
成された学習用のいけすであり、開閉自在の扉(4)が設
けられており、詳細には第１図に示すように構成されて
いる。In Fig. 2 showing the outline of an ocean ranch, (1) is an ocean ranch formed in a cove, (2) is a swimming block corresponding to the entrance and exit of the ocean ranch (1) to the open sea, and (3) is the ocean. It is a training cage formed in the ranch (1), and is provided with a door (4) that can be opened and closed, and is configured in detail as shown in FIG.
すなわち、第１図において、(5a)，(5b)は海中に平行に
立設された２個の電極であり、たとえば平板状の電極材
により形成されており、両電極(5a)，(5b)の一側に前記
した扉(4)が設けられ、他側が閉塞されていけす(3)が構
成されている。That is, in FIG. 1, (5a) and (5b) are two electrodes that are erected in parallel in the sea, and are formed of, for example, a plate-shaped electrode material, and both electrodes (5a) and (5b) The above-mentioned door (4) is provided on one side, and the other side is closed (3).
さらに、(6)は両電極(5a)，(5b)に電圧を印加して両電
極(5a)，(5b)間に所定電界強度の電界を形成する電源、
(7)は３KHz 以下の可変設定された所定周波数の発振信
号は出力する発振器、(8)は前記発振信号を増幅する増
幅器、(9)は学習用の水中スピーカであり、いけす(3)内
の海面付近に配設され、増幅器(8)により増幅された前
記発振信号により３KHz 以下の前記所定周波数の音を海
水中に放射する。Further, (6) is a power supply for applying a voltage to both electrodes (5a), (5b) to form an electric field of a predetermined electric field strength between both electrodes (5a), (5b),
(7) is an oscillator that outputs an oscillating signal of a variably set predetermined frequency of 3 KHz or less, (8) is an amplifier that amplifies the oscillating signal, (9) is an underwater speaker for learning, and is in the keisu (3) The sound signal having the predetermined frequency of 3 KHz or less is radiated into the seawater by the oscillation signal amplified by the amplifier (8), which is arranged near the sea surface.
ところで、海洋牧場(1)の遊泳遮断部(2)には、第３図に
示すように、遊泳遮断用の複数個の水中スピーカ(10)が
遊泳遮断部(2)の一側及び他側の対向位置に配設されて
おり、遊泳遮断用の発振器(11)からの可変設定された所
定周波数の発振信号が、増幅器(12)により増幅されて各
水中スピーカ(10)に入力され、各水中スピーカ(10)から
前記所定周波数の音がスクリーン状に発生される。By the way, as shown in FIG. 3, a plurality of underwater loudspeakers (10) for blocking the swimming are provided on one side and the other side of the swimming blocking section (2) in the swimming blocking section (2) of the ocean ranch (1). The oscillating signal of the predetermined frequency which is variably set from the oscillator (11) for blocking swimming is amplified by the amplifier (12) and input to each underwater speaker (10). From the underwater speaker (10), the sound of the predetermined frequency is generated like a screen.
そして、養殖魚を海洋牧場(1)に放牧する場合、放牧に
先立つて養殖魚を稚魚の段階で学習用のいけす(3)に収
容し、いけす(3)内において、養殖魚に電気刺激と所定
周波数の音を同時に与える。Then, when grazing the cultured fish on the marine ranch (1), the cultured fish are stored in the learning pan (3) at the stage of fry prior to grazing, and the cultured fish is electrically stimulated in the pan (3). A sound of a predetermined frequency is given at the same time.
このとき、電源(2)を第４図(a)に示すように断続的に通
電させるとともに、発振器(7)を第４図(b)に示すように
断続的に作動させ、しかも電極(2)の通電状態時に発振
器(7)が作動状態となるように制御し、両電極(5a)，(5
b)間に断続的に発生する電界による刺激と，水中スピー
カ(9)から断続的に発生する音とを、同時にいけす(3)内
の養殖魚に与える。At this time, the power source (2) is intermittently energized as shown in Fig. 4 (a), and the oscillator (7) is intermittently operated as shown in Fig. 4 (b). ), The oscillator (7) is controlled so that it is activated, and both electrodes (5a), (5
b) The stimulation by the electric field intermittently generated during the period and the sound intermittently generated from the underwater speaker (9) are simultaneously given to the cultured fish in the cage (3).
なお、電源(2)による印加電圧は、いけす(3)内の養殖魚
が驚きを示すくらいの軽微な刺激を受ける程度がよく、
具体的には電極(5a)，(5b)間の間隔を１ｍとすると、体
長１cmのマダイの稚魚に対しては70Ｖ，体長１cmのヒラ
メの稚魚に対しては90Ｖの電圧が適当である。It should be noted that the voltage applied by the power supply (2) is preferably such that the cultured fish in the ikesu (3) receives a slight stimulus that is surprising.
Specifically, assuming that the distance between the electrodes (5a) and (5b) is 1 m, a voltage of 70 V is suitable for juvenile red sea bream with a length of 1 cm and 90 V for juvenile flounder with a length of 1 cm.
ところで、電気刺激と所定周波数の音を同時に与えられ
た養殖魚は、前記所定周波数の音のあるところに電気刺
激があることを学習する。By the way, the cultured fish that is given the electrical stimulation and the sound of the predetermined frequency at the same time learns that the electrical stimulation is present where the sound of the predetermined frequency exists.
そして、この学習効果を調べるために、学習時間と電気
刺激及び前記所定周波数の音に対する養殖魚の忌避率と
の関係を測定したところ、第５図に示すようになり、学
習時間がＴ時間になれば、忌避率はほぼ100％で飽和し
始め、第５図からＴ時間の学習で十分な効果が得られる
ことがわかる。Then, in order to examine the learning effect, the relationship between the learning time and the repulsion rate of the cultured fish with respect to the electrical stimulation and the sound of the predetermined frequency was measured, and as shown in FIG. 5, the learning time was T time. For example, the repellent rate begins to saturate at almost 100%, and it can be seen from FIG. 5 that learning for T time has a sufficient effect.
従つて、いけす(3)内において、養殖魚に対し、電気刺
激と前記所定周波数の音とを前記したＴ時間継続して与
えることにより、ほぼ100％の養殖魚が、前記所定周波
数の音のあるところに電気刺激があることを学習する。Therefore, in the ikesu (3), by applying electrical stimulation and sound of the predetermined frequency to the cultured fish continuously for the T time, almost 100% of the cultured fish is Learn that there is electrical stimulation somewhere.
そして、このように学習した養殖魚を、水中スピーカ(1
0)により遊泳遮断部(2)に前記所定周波数の音をスクリ
ーン状に発生させた海洋牧場(1)に放牧すると、学習効
果により、養殖魚は水中スピーカ(10)による所定周波数
の音を忌避し、遊泳遮断部(2)から脱出する養殖魚はほ
とんどない。Then, the aquaculture fish learned in this way is used as an underwater speaker (1
When grazing on the marine ranch (1) which generated the sound of the above-mentioned predetermined frequency in the swimming block (2) by (0), the cultured fish avoids the sound of the predetermined frequency by the underwater speaker (10) due to the learning effect. However, few cultured fish escape from the swimming block (2).
このとき、学習の有無による音の威嚇効果のちがいを調
べるために、遊泳遮断部(2)に水中スピーカ(10)による
音を発生させた状況で、放牧期間と遮断率との関係を測
定したところ、学習していない魚及び学習した養殖魚の
遮断率は、それぞれ第６図中の１点鎖線及び実線に示す
ようになつた。At this time, in order to investigate the difference in the threatening effect of the sound depending on the presence or absence of learning, the relationship between the grazing period and the blocking rate was measured in the situation where the sound was generated by the underwater speaker (10) in the swimming blocking section (2). However, the blocking rates of the unlearned fish and the learned cultured fish were as shown by the one-dot chain line and the solid line in FIG. 6, respectively.
すなわち、学習をしていない養殖魚の場合、水中スピー
カ(10)による音にすぐに慣れて音の威嚇効果が短期間で
薄れ、放牧後わずかな期間で遮断率が急減するのに対
し、学習をした養殖魚の場合、学習によつて音の威嚇効
果の薄れが防止され、高い遮断率が長期間継続し、養殖
魚の海洋牧場(1)からの脱出が確実に防止できることに
なる。In other words, in the case of uncultivated cultured fish, the intimidating effect of the sound quickly fades after becoming accustomed to the sound from the underwater speaker (10), and the interception rate sharply decreases in a short period after grazing. In the case of the cultured fish, the learning can prevent the threatening effect of the sound from diminishing, the high blocking rate can be maintained for a long time, and the escape of the cultured fish from the marine ranch (1) can be reliably prevented.
ところで、養殖魚の学習効果の低下による遮断率の低下
が見られた場合には、再び養殖魚を学習用のいけす(3)
内において学習させるか、あるいは第７図に示すよう
に、海洋牧場(1)の遊泳遮断部(2)に、それぞれ複数個の
棒状電極をほぼ等間隔に配列し，かつ電気的に接続して
形成した２個の電極列(13a)，(13b)を平行に配設し、制
御回路(14)により電源(15)を駆動して両電極列(13a)，
(13b)間に所定電界強度の電界を形成し、水中スピーカ
(10)による音と併用し、学習効果の低下を抑制すればよ
い。By the way, if the cutoff rate is reduced due to a decrease in the learning effect of the cultured fish, the cultured fish is again used for learning (3).
Or, as shown in Fig. 7, a plurality of rod-shaped electrodes are arranged at approximately equal intervals and electrically connected to the swimming block (2) of the ocean ranch (1). The two formed electrode arrays (13a) and (13b) are arranged in parallel, and the power supply (15) is driven by the control circuit (14) to drive both electrode arrays (13a),
(13b) An electric field with a predetermined electric field strength is formed between
It may be used in combination with the sound from (10) to suppress the deterioration of the learning effect.
本発明は、以上説明したように構成されているので、以
下に記載するような効果を奏する。Since the present invention is configured as described above, it has the effects described below.
放牧前の養殖魚に対し、学習用のいけす内において電気
刺激と所定周波数の音を同時に所定期間与え続けること
により、放牧前の養殖魚に、前記所定周波数の音のある
ところに電気刺激があることを学習させることができる
ため、学習後に、養殖魚を、遊泳遮断部に前記所定周波
数の音をスクリーン状に発生させた海洋牧場に放牧して
も、養殖魚は前記所定周波数の音を忌避して遊泳遮断部
に接近することがなく、従来のような音の威嚇効果の薄
れを防止することができ、音の威嚇によつて養殖魚の海
洋牧場からの脱出を確実に防止することが可能となる。The cultured fish before grazing is electrically stimulated where there is the sound of the predetermined frequency by continuously applying the electrical stimulation and the sound of the predetermined frequency to the cultured fish before the grazing for a predetermined period at the same time. After learning, even if the farmed fish is grazing on the marine ranch where the sound of the predetermined frequency is generated like a screen in the swimming block, the cultured fish avoids the sound of the predetermined frequency. It is possible to prevent the intimidating effect of sound from diminishing without approaching the swimming block, and it is possible to reliably prevent escape of cultured fish from the marine ranch due to the intimidating sound. Becomes
図面は、本発明の魚類の養殖方法の実施例を示し、第１
図ないし第６図は１実施例を示し、第１図は一部の正面
図、第２図及び第３図は海洋牧場の概略平面図及び模式
図、第４図(a)，(b)は電源の通電パターン図及び発振器
の作動パターン図、第５図は学習時間と忌避率との関係
図、第６図は放牧期間と遮断率との関係図、第７図は他
の実施例の一部の斜視図である。 (1)……海洋牧場、(2)……遊泳遮断部、(3)……いけ
す、(10)……水中スピーカ。The drawings show an embodiment of the method for aquaculture of fish according to the present invention.
FIGS. 1 to 6 show one embodiment, FIG. 1 is a partial front view, FIGS. 2 and 3 are schematic plan views and schematic views of an ocean ranch, and FIGS. 4 (a) and 4 (b). Fig. 5 is a diagram of the energization pattern of the power source and Fig. 5 is a diagram of the operation pattern of the oscillator. Fig. 5 is a diagram of the relationship between the learning time and the repellency rate. Fig. 6 is a diagram of the relationship between the grazing period and the cutoff rate. It is a one part perspective view. (1) …… Ocean Ranch, (2) …… Swimming block, (3) …… Ikesu, (10) …… Underwater speaker.
───────────────────────────────────────────────────── フロントページの続き (72)発明者 荒井 浩成 大阪府大阪市西区江戸堀１丁目６番14号 日立造船株式会社内 (72)発明者 前畑 英彦 大阪府大阪市西区江戸堀１丁目６番14号 日立造船株式会社内 (72)発明者 大谷 誠二 大阪府大阪市西区江戸堀１丁目６番14号 日立造船株式会社内 ─────────────────────────────────────────────────── ─── Continued front page (72) Inventor Hironari Arai 1-6-14 Edobori, Nishi-ku, Osaka City, Osaka Prefecture Hitachi Shipbuilding Co., Ltd. (72) Hidehiko Maehata 1-6-14 Edobori, Nishi-ku, Osaka City, Osaka Prefecture Hitachi Shipbuilding Co., Ltd. (72) Inventor Seiji Otani 1-6-14 Edobori, Nishi-ku, Osaka City, Osaka Prefecture Hitachi Shipbuilding Co., Ltd.
Claims (1)
成され，両側に平行な電極，一側に開閉自在の扉を有
し，他側が閉塞された学習用のいけすにおいて、放牧前
に養殖魚に、前記両電極による電気刺激とスピーカによ
る所定周波数の音を同時に所定期間与え、そののち、前
記養殖魚を前記海洋牧場に放牧し、前記海洋牧場と外海
との出入口に相当する遊泳遮断部に、該遊泳遮断部の両
側の水中スピーカにより前記所定周波数の音をスクリー
ン状に発生させることを特徴とする魚類の養殖方法。1. A learning bait, which is formed in an ocean ranch formed by an inlet or the like, has parallel electrodes on both sides, a door that can be opened and closed on one side, and the other side is closed, and is aquaculture before grazing. The fish is electrically stimulated by both electrodes and a sound of a predetermined frequency is given by a speaker at the same time for a predetermined period. After that, the cultured fish is grazing on the marine ranch, and a swimming block corresponding to the entrance and exit between the marine ranch and the open sea. In addition, a method for aquaculture of fish, characterized in that the sound of the predetermined frequency is generated like a screen by the underwater speakers on both sides of the swimming block.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63066070A JPH0622412B2 (en) | 1988-03-18 | 1988-03-18 | Fish farming method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63066070A JPH0622412B2 (en) | 1988-03-18 | 1988-03-18 | Fish farming method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH01240129A JPH01240129A (en) | 1989-09-25 |
| JPH0622412B2 true JPH0622412B2 (en) | 1994-03-30 |
Family
ID=13305214
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63066070A Expired - Fee Related JPH0622412B2 (en) | 1988-03-18 | 1988-03-18 | Fish farming method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0622412B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114258883A (en) * | 2021-12-13 | 2022-04-01 | 明阳智慧能源集团股份公司 | Mariculture device based on offshore wind power |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62114814A (en) * | 1985-11-14 | 1987-05-26 | Honda Motor Co Ltd | Deburring method for casting and device thereof |
-
1988
- 1988-03-18 JP JP63066070A patent/JPH0622412B2/en not_active Expired - Fee Related
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62114814A (en) * | 1985-11-14 | 1987-05-26 | Honda Motor Co Ltd | Deburring method for casting and device thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH01240129A (en) | 1989-09-25 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |