JPS63178497A - Method of blocking swimming fish and shells - Google Patents
Method of blocking swimming fish and shellsInfo
- Publication number
- JPS63178497A JPS63178497A JP62008553A JP855387A JPS63178497A JP S63178497 A JPS63178497 A JP S63178497A JP 62008553 A JP62008553 A JP 62008553A JP 855387 A JP855387 A JP 855387A JP S63178497 A JPS63178497 A JP S63178497A
- Authority
- JP
- Japan
- Prior art keywords
- fish
- shellfish
- field strength
- electric field
- swimming
- 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
- 241000251468 Actinopterygii Species 0.000 title claims description 31
- 230000009182 swimming Effects 0.000 title claims description 15
- 238000000034 method Methods 0.000 title claims description 9
- 230000000903 blocking effect Effects 0.000 title claims description 8
- 235000015170 shellfish Nutrition 0.000 claims description 29
- 230000005684 electric field Effects 0.000 claims description 21
- 235000014102 seafood Nutrition 0.000 claims description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 3
- 235000019688 fish Nutrition 0.000 description 27
- 238000006243 chemical reaction Methods 0.000 description 8
- 230000000638 stimulation Effects 0.000 description 7
- 239000013535 sea water Substances 0.000 description 6
- 231100000862 numbness Toxicity 0.000 description 4
- 241000238557 Decapoda Species 0.000 description 3
- 238000009360 aquaculture Methods 0.000 description 2
- 244000144974 aquaculture Species 0.000 description 2
- 238000003491 array Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000035939 shock Effects 0.000 description 2
- 206010003497 Asphyxia Diseases 0.000 description 1
- 241000555825 Clupeidae Species 0.000 description 1
- 206010033799 Paralysis Diseases 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 235000019512 sardine Nutrition 0.000 description 1
Landscapes
- Farming Of Fish And Shellfish (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
【発明の詳細な説明】
〔産業上の利用分野〕
この発明は、侵入禁止域への魚介類の遊泳を遮断する魚
介類の遊泳遮断方法に関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a method for blocking fish and shellfish from swimming in a prohibited area.
一般に、魚介類を養殖する場合、海水中にいけすを設け
、該いけす内において魚介類の養殖を行なっており、通
常海水中に網を張りめぐらしてぃけすを形成し、網によ
りいけすの外側への魚介類の脱出やいけすの内側への魚
介類の侵入を阻止している。Generally, when cultivating seafood, a cage is set up in seawater, and the fish and shellfish are cultivated within the cage. Usually, a net is stretched around the seawater to form a cage, and the net is used to extend the fish and shellfish to the outside of the cage. This prevents fish and shellfish from escaping and from entering the inside of the cage.
ところが、このような網を用いたいけす方式の場合、水
深が深すぎず、波が穏やかで潮汐変化の少ない海域を選
んでも、台風等による網の破損。However, in the case of this type of cage system that uses nets, even if you choose an area where the water is not too deep, the waves are calm, and the tides do not change much, the nets may be damaged by typhoons or other factors.
流失や船舶の接触による網の破損の発生することがあり
、網の保守、維持に多大な労力、費用を要するため、網
により確実に、かつ簡易に魚介類の遊泳を遮断すること
ができないという不都合がある。Nets can be washed away or damaged due to contact with ships, and maintenance and upkeep of nets requires a great deal of effort and expense, so nets cannot reliably and easily block the swimming of fish and shellfish. It's inconvenient.
また、海洋牧場のように大規模な養殖を行なう場合には
、使用する網の全長が非常に長いものになり、網の保守
、維持に要する労力、費用もそれだけ多大になり、魚介
類の遊泳遮断に網を用いることは、大規模養殖の場合最
良の方策とは言えない。In addition, when carrying out large-scale aquaculture such as at marine farms, the total length of the nets used is extremely long, and the labor and expense required to maintain and maintain the nets are correspondingly large. Using nets for isolation is not the best strategy for large-scale aquaculture.
そこで、本件出願人において、つぎのような方法を提案
している。Therefore, the applicant has proposed the following method.
すなわち海水中に特定の海域を囲むように複数の電極列
を並行に配設し、各電極列に電圧を印加して各電極列間
に所定の電界強度の領域を形成し、前記領域により魚介
類の侵入禁止域への遊泳を遮断するものである。In other words, a plurality of electrode rows are arranged in parallel in seawater to surround a specific sea area, and a voltage is applied to each electrode row to form a region with a predetermined electric field strength between each electrode row. This is to prevent swimming in the restricted area.
しかし、この場合、同じ電界強度でも、魚介類の体長に
よって魚介類の受ける電気的刺激が異なり、体長の長い
魚介類が強い電気的刺激を受けて痺れや麻痺などの反応
を示すような電界強度であっても、体長の短い魚介類は
弱い電気的刺激しか受けないため、前記各電極列間を容
易に遊泳して前記特定の水域内外へ侵入あるいは脱出し
てしまい、逆に体長の短い魚介類が強い電気的刺激を受
けるような電界強度であると、体長の長い魚介類はさら
に強い電気的刺激を受けて死滅してしまい、遮断対象で
ある魚介類の遊泳を確実に遮断できるような電界強度の
設定が非常に困難であるという問題点がある。However, in this case, even if the electric field strength is the same, the electrical stimulation received by the fish and shellfish differs depending on the body length of the fish, and the electric field strength is such that long-bodied fish and shellfish receive strong electrical stimulation and exhibit reactions such as numbness or paralysis. However, since short fish and shellfish receive only weak electrical stimulation, they easily swim between the electrode rows and enter or escape from the specific water area. If the electric field strength is such that fish and shellfish receive strong electrical stimulation, long-bodied fish and shellfish will receive even stronger electrical stimulation and die. There is a problem in that it is very difficult to set the electric field strength.
そこで、この発明では、遮断対象である魚介類の遊泳を
確実に遮断できるようにすることを技術的課題とする。Therefore, the technical problem of the present invention is to ensure that the swimming of fish and shellfish to be blocked can be blocked.
この発明は、前記の点に留意してなされたものであり、
水中に複数の電極列を並行に配設し、前記各電極列に電
圧を印加して前記各電極列間に所定の電界強度の領域を
形成し、前記領域により魚介類の侵入禁止域への遊泳を
遮断する魚介類の遊泳遮断方法において、前記領域の電
界強度と、遮断対象である魚介類の体長との積が０．０
５〔Ｖ〕以上となるようにすることを特徴とする魚介類
の遊泳遮断方法である。This invention was made with the above points in mind,
A plurality of electrode rows are arranged in parallel underwater, a voltage is applied to each electrode row to form a region with a predetermined electric field strength between each electrode row, and the region is used to prevent fish and shellfish from entering an area. In the swimming blocking method for fish and shellfish that blocks swimming, the product of the electric field strength in the area and the body length of the fish and shellfish to be blocked is 0.0.
This is a method for blocking the swimming of fish and shellfish, characterized in that the voltage is 5 [V] or more.
したがって、この発明によると、各電極列間の電界強度
を決定するパラメータとして、電界強度Ｅ（Ｖ／ｃ１１
Ｉ）と遮断対象である魚介類の体長Ｌ〔α〕との積Ｅ−
Ｌが導入され、Ｅ−Ｌが０゜０５ （Ｖ：）以上となる
領域が各電極列間に形成され、通常養殖されるパまだい
”、″ひらめ１，１１（るまえび”、゛はまち”および
°゛いわし”などの魚介類に驚き、痺れ、麻痺稈度の感
電反応を示す電気的刺激を与えることが可能となり、こ
れらの魚介類の遊泳が確実に遮断されることになる。Therefore, according to the present invention, the electric field strength E (V/c11
I) and the body length L [α] of the fish and shellfish to be blocked, product E-
L is introduced, and a region where E-L is 0°05 (V:) or more is formed between each electrode row, and a region where E-L is 0°05 (V:) or more is formed between each electrode row. It becomes possible to apply electrical stimulation that causes shock, numbness, and a paralyzing electric shock reaction to seafood such as "hamachi" and "sardines," and the swimming of these fish and shellfish is reliably blocked.
つぎに、この発明を、その１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 drawings showing one embodiment thereof.
第１図において、（Ｉａ）、（Ｉｂ）は海水中に並行に
配設された２個の電極列であり、それぞれ複数個の棒状
導電電極（２Ｂ）、（２ｂ）が等間隔に配列されて形成
され、両電極列（ＩＢ）、（Ｉｂ）ごとの各導電電極（
２Ｂ）、（２ｂ）が接続体（３ａ）、（８ｂ）により電
気的に接続されている。In Figure 1, (Ia) and (Ib) are two electrode rows arranged in parallel in seawater, and each has a plurality of rod-shaped conductive electrodes (2B) and (2b) arranged at equal intervals. are formed, and each conductive electrode (
2B) and (2b) are electrically connected by connecting bodies (3a) and (8b).
（４）は電源であり、該電源（４）により両電極列（ｌ
Ｂ） 。(4) is a power source, and both electrode arrays (l) are powered by the power source (4).
B).
（１ｂ）にたとえば直流電圧が印加され、両電極列（ｌ
Ｂ）。For example, a DC voltage is applied to (1b), and both electrode rows (l
B).
（１ｂ）間に所定の電界強度の電気スクリーン領域が形
成される。(1b) An electric screen area with a predetermined electric field strength is formed between the two.
ところで、両電極列（ＩＢ）、（ｌｂ）間の電界強度を
決定するパラメータとして、電界強度Ｅ（Ｖ／ａ）と遮
断対象である魚介類の体長Ｌ （ｃＭ）との積Ｅ−Ｌを
導入し、以下のようにしてＥ−Ｌの最適値を求めた。By the way, as a parameter to determine the electric field strength between both electrode rows (IB) and (lb), the product E-L of the electric field strength E (V/a) and the body length L (cM) of the fish and shellfish to be blocked is was introduced, and the optimum value of E-L was determined as follows.
すなわち、第２図に示すように、海水を満たした容器（
５）内の両端部に平行に２枚の電ｉ （６Ｂ）、（６ｂ
）を配設し、両電極（６ａ）、（６ｂ）に電源（７）に
より長時間電圧を印加し、容器（５）内に入れた各種の
体長の魚介類（８）がどのような反応を示すかを調べた
。In other words, as shown in Figure 2, a container filled with seawater (
5) Two electric wires i (6B), (6b
), and by applying a voltage to both electrodes (6a) and (6b) from a power source (7) for a long period of time, we can measure the reaction of fish and shellfish of various body lengths (8) placed in a container (5). We investigated whether it shows.
このとき、魚介類（８）として通常養殖される°゛まだ
い”、°ひらめ”、パ＜るまえび”、゛はまち”′およ
び゛いわし”を選び、両軍４ｉ （６ａ）、（６ｂ）間
の電界強度Ｅとこれらの魚介類（８）の体長りとの積Ｅ
−Ｌがどれくらいの値になったときに、魚介類（８）が
反応を示すかを調べたところ、第３図に示す体長りと電
界強度Ｅとの関係図中の曲線の右側、すなわち同図中の
斜線を施こした範囲で感電反応を示し、電界強度Ｅが大
きく２体長りが長いほど、硬直あるいは仮死などの強い
感電反応を示し、驚き、軽い痺れなどの最も軽微な感電
反応を示し始めるのが同図中の曲線の境界線であり、こ
の境界線は電界強度Ｅと体長りとの積Ｅ−Ｌが０．０５
〔Ｖ〕の曲線にほぼ近似する。At this time, select the fish and shellfish (8) that are usually farmed such as ``Madai'', ``Flounder'', ``Paruma shrimp'', ``Hamachi'', and ``Sardine'', and select 4i (6a), (6b ) and the product E of the body length of these seafoods (8)
When we investigated the value of -L at which fish and shellfish (8) showed a reaction, we found that it was on the right side of the curve in the relationship diagram between body length and electric field strength E shown in Figure 3, that is, the same value. The diagonally shaded area in the figure indicates an electric shock reaction, and the greater the electric field strength E and the longer the body length, the stronger the electric shock reaction such as stiffness or asphyxia, and the mildest electric shock reaction such as surprise or slight numbness. What begins to show is the boundary line of the curve in the same figure, where the product E-L of electric field strength E and body length is 0.05.
It almost approximates the curve of [V].
したがって、第１図に示す両電極列（ｌａ）、（ｌｂ）
間に電界強度Ｅと体長りとの積Ｅ−Ｌが０．０５ 〔Ｖ
〕以上となるような領域を海水中に形成することにより
、′まだいｎ 、 ｕひらめ′”、°゛＜るまえび′”
、゛はまち″および“いわしパなどの魚介類の遊泳を確
実に遮断することができる。Therefore, both electrode arrays (la) and (lb) shown in FIG.
The product E-L of electric field strength E and body length is 0.05 [V
]By forming the above-mentioned area in the seawater, it is possible to create ``fried shrimp'' and ``fried shrimp''.
It is possible to reliably block the swimming of seafood such as ``hamachi'' and ``sardines.''
なお、電極列は３以上であってもよいのは勿論である。Note that, of course, the number of electrode rows may be three or more.
以上のように、この発明の魚介類の遊泳遮断方法による
と、各電極列間の電界強度を決定するパラメータとして
、電界強度と遮断対象である魚介類の体長との積を導入
し、当該積が０．０５ 〔Ｖ〕以上となるようにしたた
め、魚介類に驚き、痺れ、麻痺程度の感電反応を示す電
気的刺激を与えることが可能となり、魚介類の遊泳を確
実に遮断することができる。As described above, according to the method for blocking swimming of fish and shellfish of the present invention, the product of the electric field strength and the body length of the fish and shellfish to be blocked is introduced as a parameter for determining the electric field strength between each electrode row, and the product of the electric field strength and the body length of the fish and shellfish to be blocked is Since the voltage is set to be 0.05 [V] or more, it is possible to give electrical stimulation that causes shock, numbness, or a paralyzing electric shock reaction to the seafood, and it is possible to reliably block the swimming of the seafood. .
図面は、この発明の魚介類の遊泳遮断方法の１実施例を
示し、第１図は斜視図、第２図は動作説明用の断面図、
第３図は魚介類の体長と電界強度との関係図である。
（ＩＢ）、（ｌｂ）・・・電極列、（４）・・・電源、
（８）・・・魚介類。The drawings show one embodiment of the method for blocking the swimming of fish and shellfish according to the present invention, and FIG. 1 is a perspective view, and FIG. 2 is a sectional view for explaining the operation.
FIG. 3 is a diagram showing the relationship between body length of fish and shellfish and electric field strength. (IB), (lb)...electrode array, (4)...power supply,
(8)...Seafood.
Claims (1)
列に電圧を印加して前記各電極列間に所定の電界強度の
領域を形成し、前記領域により魚介類の侵入禁止域への
遊泳を遮断する魚介類の遊泳遮断方法において、 前記領域の電界強度と、遮断対象である魚介類の体長と
の積が０．０５〔Ｖ〕以上となるようにすることを特徴
とする魚介類の遊泳遮断方法。(1) A plurality of electrode rows are arranged in parallel in water, a voltage is applied to each of the electrode rows to form a region with a predetermined electric field strength between the electrode rows, and the region prevents fish and shellfish from entering. A method for blocking the swimming of fish and shellfish in an area, characterized in that the product of the electric field strength in the area and the body length of the fish and shellfish to be blocked is 0.05 [V] or more. Method for blocking the swimming of seafood.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62008553A JPS63178497A (en) | 1987-01-16 | 1987-01-16 | Method of blocking swimming fish and shells |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62008553A JPS63178497A (en) | 1987-01-16 | 1987-01-16 | Method of blocking swimming fish and shells |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS63178497A true JPS63178497A (en) | 1988-07-22 |
| JPH0573368B2 JPH0573368B2 (en) | 1993-10-14 |
Family
ID=11696309
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62008553A Granted JPS63178497A (en) | 1987-01-16 | 1987-01-16 | Method of blocking swimming fish and shells |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63178497A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0741147U (en) * | 1993-12-24 | 1995-07-21 | 勝 朝良 | Valve mechanism such as fire hydrant |
-
1987
- 1987-01-16 JP JP62008553A patent/JPS63178497A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0573368B2 (en) | 1993-10-14 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JPS63178497A (en) | Method of blocking swimming fish and shells | |
| JPH0345575Y2 (en) | ||
| JPH065739Y2 (en) | Electric screen generator | |
| JPH0442788B2 (en) | ||
| JPH0347494Y2 (en) | ||
| JPH0440973B2 (en) | ||
| JPH0347496Y2 (en) | ||
| JPH0473280B2 (en) | ||
| JPS62232898A (en) | Electric screen generator | |
| JPH0345574Y2 (en) | ||
| JPH0471493B2 (en) | ||
| JPH0551160B2 (en) | ||
| JPH0345573Y2 (en) | ||
| JPS62206797A (en) | Electric screen generator | |
| JPH0550840B2 (en) | ||
| JPH0345572Y2 (en) | ||
| JPH0442793B2 (en) | ||
| JPH0442792B2 (en) | ||
| JPH0763295B2 (en) | How to prevent seafood from swimming | |
| JPH0442790B2 (en) | ||
| JPH0442791B2 (en) | ||
| JPH0442797B2 (en) | ||
| JPH0442789B2 (en) | ||
| JPH0442799B2 (en) | ||
| JPH0442794B2 (en) |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EXPY | Cancellation because of completion of term |