JP2008137959A - Repelling material against apple snail and repelling method against apple snail - Google Patents
Repelling material against apple snail and repelling method against apple snail Download PDFInfo
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本発明は、スクミリンゴガイの忌避材および忌避方法に関するものである。 The present invention relates to a repellent material and a repellent method for scallop apple mussel.
南米原産の淡水巻貝スクミリンゴガイは主として1980年代に東アジア・東南アジアに食料として導入された。日本では1981年に九州に導入されたがその後商品価値を失い、養殖池から逃げ出して野生化した貝が九州各地の河川・クリーク・水路・水田で繁殖するようになった。本貝は呼吸器官としてえらと肺様器官を持ち通常水中で棲息するが、産卵時には陸上に移動して水路の岸壁や稲の茎の上で産卵する。卵塊は人の親指大でピンク色を呈し、産卵数が多い時は水路の岸壁がピンク色に染まり水路景観を著しく損なうなど、特に観光地では大きな問題となっている(非特許文献1)。 South American native freshwater snails were introduced mainly in East and Southeast Asia in the 1980s. In Japan, it was introduced in Kyushu in 1981, but then lost its commercial value, and shellfish that had escaped from the aquaculture pond and became wild became breeding in rivers, creeks, waterways, and paddy fields throughout Kyushu. This shellfish has a gill-like organ as a respiratory organ and usually inhabits in the water, but when spawning, it moves to the land and lays eggs on the quay of the waterway and on the rice stalk. Egg masses are pink with human thumb size, and when there are many eggs laid, the quay of the waterway is dyed pink and the waterway landscape is significantly damaged, which is a serious problem particularly in tourist areas (Non-patent Document 1).
この貝の防除方法として、水田においては農薬登録された殺貝剤が数種類あるが、河川や水路に散布できる農薬はなく、人海戦術で水路の岸壁に産み付けられた卵塊をそぎ落とす以外にほとんど対策がない現状にある。 As a method of controlling this shellfish, there are several types of pesticides registered as pesticides in paddy fields, but there are no pesticides that can be sprayed on rivers and waterways, except for removing egg masses laid on the quay of waterways by human sea tactics. There is almost no countermeasure.
本発明は、安全で効果的なスクミリンゴガイの忌避材および忌避方法を提供し、河川・水路におけるスクミリンゴガイの産卵を防止する事を目的としている。 An object of the present invention is to provide a safe and effective repellent material and repellent method for scallop apple mussel, and to prevent spawning of scallop mussel in rivers and waterways.
スクミリンゴガイは、通常は、用水路等の水中に生息し、産卵時は水路のコンクリートや土などの擁壁を登り、気中部分に産卵する性質があり、このために繁殖することが可能であるが、本発明者は、スクミリンゴガイが水路の岸壁に産卵した卵塊の除去方法について検討した結果、スクミリンゴガイの忌避剤を水路の水面すぐ上の岸壁に設置することでスクミリンゴガイの水中から気中への移動を防止することができること、それにより産卵を防止できるという知見を得た。 Sukurigingai usually lives in water such as irrigation canals, and when spawning, it has the property of climbing retaining walls such as concrete and soil in the canal and laying eggs in the aerial part, so it can breed. As a result of examining the method for removing egg masses spawned on the quay of the waterway, the present inventor has installed a repellent of the scallop apple mussel on the quay just above the water surface of the waterway, so The knowledge that it can be prevented and thereby egg laying can be prevented.
更に、本発明者は、前記知見に基づいて、スクミリンゴガイの忌避剤をスクミリンゴガイの生息する水路等の気中部分に安定して存在せしめることにより、スクミリンゴガイの産卵を効果的に防止できること見いだし、本発明に至ったものである。 Furthermore, based on the above findings, the present inventor has found that the spawning of scallop apple mussels can be effectively prevented by allowing the repellent of scallop apple mussels to be stably present in the aerial part of a waterway or the like inhabiting the scallop apple mussels. Has been reached.
即ち、本発明のスクミリンゴガイ用忌避材は、スクミリンゴガイの忌避剤と皮膜形成型樹脂とを含有することを特徴とする。 That is, the repellent material for scallop apple mussels of the present invention is characterized by containing a repellent of scallop apple mussels and a film-forming resin.
また、本発明のスクミリンゴガイの忌避方法は、スクミリンゴガイの生息する水路の気中部分に、前記のスクミリンゴガイ用忌避材を配置することを特徴とする。 In addition, the repellent method for the scallop apple mussel according to the present invention is characterized in that the repellent material for scallop apple mussel is disposed in an airborne portion of a water channel inhabiting the scallop apple mussel.
本発明のスクミリンゴガイ用忌避材によれば、スクミリンゴガイの生息する水路等の気中部分の所望の位置にスクミリンゴガイの忌避剤を皮膜状に配置することができるので、水路等に棲息するスクミリンゴガイが産卵のために気中に出てくるのを防止し、結果的にスクミリンゴガイの産卵を防止できる。 According to the repellent material for scallop apple mussels of the present invention, the repellent of scallop apple mussels can be arranged in a film at a desired position in the aerial part of the water channel where the scallop apple mussels live. Therefore, it can be prevented from coming out in the air, and as a result, spawning of scallop apple mussels can be prevented.
更に、本発明の好ましい実施態様に於いては、銅粉や(メタ)アクリレートを含有する樹脂を選択しているので、上記効果に加えて、環境にやさしいという効果を有している。 Furthermore, in a preferred embodiment of the present invention, since a resin containing copper powder or (meth) acrylate is selected, in addition to the above effects, there is an effect that it is environmentally friendly.
また、本発明のスクミリンゴガイの忌避方法は、容易且つ確実にスクミリンゴガイを忌避することができる。 In addition, the method for repelling the scallop apple mussel according to the present invention can easily and reliably repel the scallop apple mussel.
従って、本発明のスクミリンゴガイ用忌避材およびスクミリンゴガイの忌避方法は、スクミリンゴガイが棲息するいろいろな河川、クリーク、水路、池などに適用でき、非常に有用である。 Therefore, the repellent material for scallop apple mussels and the repellent method of scallop apple mussels according to the present invention can be applied to various rivers, creeks, waterways, ponds and the like where scallop apple mussels live and is very useful.
本発明で用いるスクミリンゴガイの忌避剤としては、銅、亜鉛、錫等の金属粉が挙げられるが、そのうち銅粉が、入手し易さ、価格、人体への毒性の面から優れており、好ましい。特に、その粒度については、本発明者の検討に拠れば、平均粒径が500μm以下であることが好ましく、300μm以下であることが一層好ましい。 Examples of the repellent for scallop apple mussels used in the present invention include metal powders such as copper, zinc, and tin. Of these, copper powder is preferable because of its availability, cost, and toxicity to the human body. In particular, regarding the particle size, the average particle size is preferably 500 μm or less, and more preferably 300 μm or less, according to the study of the present inventors.
スクミリンゴガイ用忌避材中でのスクミリンゴガイの忌避剤の配合量については3質量%以上50質量%以下が好ましく、5質量%以上30質量%以下が一層好ましい。3質量%以上であれば、スクミリンゴガイの忌避剤の効果が確実に得られるし、50質量%以下であれば硬化後の皮膜が柔軟性不足から耐久性が低下することもない。 About 3 mass% or more and 50 mass% or less are preferable about the compounding quantity of the repellent of Sumi apple mussel in the repellent material for Sumi apple mussels, and 5 mass% or more and 30 mass% or less are still more preferable. If it is 3% by mass or more, the effect of the repellent of Sukuringogai can be obtained with certainty, and if it is 50% by mass or less, the cured film will not be less flexible and its durability will not be lowered.
本発明で用いる皮膜形成型樹脂は、市販の塗料等の被膜形成能力を有し、しかもスクミリンゴガイの忌避剤と相互作用を起こし当該忌避剤の能力を低下しないものであれば、どのようなものでも構わないが、室温硬化型樹脂又は水性エマルジョン樹脂が作業性が良く、好ましい。 The film-forming resin used in the present invention has any film-forming ability such as a commercially available paint, and any kind of resin can be used as long as it interacts with the repellent of scallop apple mussel and does not reduce the repellent ability. However, a room temperature curable resin or an aqueous emulsion resin is preferable because of its good workability.
室温硬化型樹脂としては、(メタ)アクリレート樹脂、不飽和ポリエステル樹脂、ビニルエステル樹脂、エポキシ樹脂、ウレタン樹脂等が挙げられるが、そのうち、環境への安全性を考慮して、(メタ)アクリレートを含有する樹脂が好ましく選択される。 Examples of room temperature curable resins include (meth) acrylate resins, unsaturated polyester resins, vinyl ester resins, epoxy resins, and urethane resins. Of these, (meth) acrylates are used in consideration of environmental safety. The resin to be contained is preferably selected.
(メタ)アクリレートを含有する樹脂としては、市販の何れの樹脂を用いることができるが、銅粉等のスクミリンゴガイの忌避剤を添加する前の粘度が100〜100000mPa・sのものが好ましい。粘度100mPa・s以上ならば銅粉等のスクミリンゴガイの忌避剤が沈降することもなく、粘度100000mPa・s以下であれば塗布作業性が劣ることもない。 As the resin containing (meth) acrylate, any commercially available resin can be used, but a resin having a viscosity of 100 to 100,000 mPa · s before adding a repellent of scallop apple oyster such as copper powder is preferable. If the viscosity is 100 mPa · s or more, the repellent of scallop apple oyster such as copper powder does not settle, and if the viscosity is 100000 mPa · s or less, the coating workability is not inferior.
水性エマルジョン樹脂としては、酢酸ビニルエマルジョン、酢ビ−エチレン共重合エマルジョン、アクリル酸エステルエマルジョン、アクリル酸エステル共重合エマルジョン、酢ビ−アクリル酸エステル共重合エマルジョン、ポリエチレンエマルジョン、スチレン−ブタジエン共重合エマルジョン、クロロプレンエマルジョン等が挙げられ、この何れも用いることが可能である。 Examples of the aqueous emulsion resin include vinyl acetate emulsion, vinyl acetate-ethylene copolymer emulsion, acrylic ester emulsion, acrylic ester copolymer emulsion, vinyl acetate-acrylic ester copolymer emulsion, polyethylene emulsion, styrene-butadiene copolymer emulsion, A chloroprene emulsion can be used, and any of these can be used.
本発明のスクミリンゴガイ用忌避材に於いては、スクミリンゴガイの忌避剤と皮膜形成型樹脂以外の第三成分を発明の効果が阻害されない限りに於いて含有することができ、このような成分としては、例えば、前記樹脂の硬化剤、硬化促進剤、安定剤、紫外線吸収剤、チクソ性付与剤、無機充填剤、有機充填剤等が挙げられる。 In the repellent material for scallop apple mussel according to the present invention, a third component other than the repellent of scallop apple mussel and the film-forming resin can be contained as long as the effects of the invention are not inhibited. Examples thereof include a curing agent, a curing accelerator, a stabilizer, an ultraviolet absorber, a thixotropic agent, an inorganic filler, and an organic filler for the resin.
本発明のスクミリンゴガイ用忌避材の製造方法は、特に限定されないが、例えば、皮膜形成型樹脂にスクミリンゴガイの忌避剤を添加し、攪拌することによりスクミリンゴガイの忌避剤を皮膜形成型樹脂中に分散させることにより製造することができる。 The method for producing the repellent material for the scallop apple mussel of the present invention is not particularly limited. Can be manufactured.
本発明のスクミリンゴガイの忌避方法は、上記本発明のスクミリンゴガイ用忌避材を、圃場やスクミリンゴガイの生息する水路の気中部分に配置することを特徴としている。具体的には、上記本発明のスクミリンゴガイ用忌避材を所望の位置に塗布することで、皮膜形成型樹脂が硬化し、スクミリンゴガイの忌避剤を含んだ皮膜が当該位置に形成される。 The repellent method for the scallop apple mussel according to the present invention is characterized in that the repellent material for the scallop apple mussel according to the present invention is disposed in an air field of a field or a waterway where the scallop apple mussel inhabits. Specifically, the film-forming resin is cured by applying the above-described repellent material for the scallop apple mussels of the present invention to a desired position, and a film containing the repellent of scallop mussel is formed at that position.
スクミリンゴガイ用忌避材を配置する位置は特に限定されないが、水面近くであることが好ましく、水面より1cm〜100cmであることがより好ましい。 The position where the repellent material for scallop apple mussels is not particularly limited, but is preferably near the water surface, more preferably 1 cm to 100 cm from the water surface.
スクミリンゴガイ用忌避材を配置する部分は、できるだけ平面的であって、形状安定性が有れば、どのような材質のものであっても構わず、材質的には鉄を始めとするいろいろな金属、或いはコンクリート、石、木、樹脂でできている部分であっても、また、土の部分であっても構わない The portion where the repellent material for scallops is placed is as flat as possible and can be of any material as long as it has shape stability. Or it may be a part made of concrete, stone, wood, resin, or a part of earth.
次に実施例、比較例を挙げて、本発明を一層詳説する。 Next, the present invention will be described in more detail with reference to examples and comparative examples.
<実施例1>
樹脂分濃度40質量%の酢酸ビニル水性エマルジョン(商品名“ペガール#643R”、高圧ガス工業社製)100質量部に、平均粒径30μmの銅粉を1.2質量部添加し、約0.5時間攪拌して分散させ、忌避材1を得た。
<Example 1>
1.2 parts by mass of copper powder having an average particle size of 30 μm is added to 100 parts by mass of an aqueous vinyl acetate emulsion having a resin concentration of 40% by mass (trade name “Pegard # 643R”, manufactured by High Pressure Gas Industry Co., Ltd.). The repellent material 1 was obtained by stirring and dispersing for 5 hours.
内寸幅2m×2m、厚み10cm、高さ80cmのコンクリート製水槽の4つの内壁面に高さ40cmから55cmの位置に幅15cmで忌避材1を200g/m2塗布し、1日間乾燥養生して、忌避材1の塗膜を形成した。その後、高さ30cmまでの水位で水を張り、水温を28℃に保ちスクミリンゴガイが生息できる環境を作った。 Applying 200g / m 2 of repellent 1 with a width of 15cm to a position of 40cm to 55cm on the four inner walls of a concrete water tank with an internal dimension of 2m x 2m, a thickness of 10cm, and a height of 80cm, and drying and curing for one day Thus, a coating film of the repellent material 1 was formed. After that, water was filled at a water level up to 30 cm in height, and the temperature was kept at 28 ° C. to create an environment where scallop apple mussels can inhabit.
前記の水槽内に殻高25〜30mmのスクミリンゴガイの雌雄各30頭を飼育して、60日間壁面への産卵状況および水槽の外へのスクミリンゴガイの移動の有無を観察した。その結果、水槽外への移動も無いし、壁面への産卵もみとめられなかった。この結果を表1に示した。 Thirty males and females of scallop apple mussels with a shell height of 25 to 30 mm were bred in the aquarium, and the spawning situation on the wall surface and the presence or absence of the scallop apple mussels out of the aquarium were observed for 60 days. As a result, there was no movement outside the aquarium, and no egg laying on the wall was observed. The results are shown in Table 1.
<実施例2>
無溶剤型の2液反応型アクリル樹脂(商品名“ハードロックII DK550−003A剤/B剤”、電気化学工業社製)のA剤100質量部およびB剤100質量部に、それぞれ平均粒径30μmの銅粉を5質量部添加し、約0.5時間攪拌して分散させ、忌避材2のA剤およびB剤を得た。
<Example 2>
The average particle diameters of 100 parts by weight of agent A and 100 parts by weight of agent B of solvent-free two-component reactive acrylic resin (trade name “Hard Rock II DK550-003 agent A / agent B”, manufactured by Denki Kagaku Kogyo Co., Ltd.) 5 parts by mass of 30 μm copper powder was added, and the mixture was stirred and dispersed for about 0.5 hours to obtain repellent 2 agent A and agent B.
忌避材2のA剤、B剤を質量比1:1で混合した樹脂を200g/m2塗布し、1日間硬化養生して、忌避材2の塗膜を形成したことを除き実施例1と同様にしてスクミリンゴガイが生息できる環境を作り、実施例1と同じ評価を行った。この結果を表1に示した。 Example 1 except that 200 g / m 2 of a resin in which the A and B agents of repellent material 2 were mixed at a mass ratio of 1: 1 was applied and cured for 1 day to form a repellent material 2 coating film. Similarly, an environment where scallop apple oysters can live was created, and the same evaluation as in Example 1 was performed. The results are shown in Table 1.
<比較例1>
忌避材1を塗布しないことを除き実施例1と同様にしてスクミリンゴガイが生息できる環境を作り、実施例1と同じ評価を行った。この結果を表1に示した。
<Comparative Example 1>
The same evaluation as in Example 1 was performed by creating an environment in which scallop apple mussels can inhabit in the same manner as in Example 1 except that the repellent material 1 was not applied. The results are shown in Table 1.
<比較例2>
高さ10cmから25cmの水中に浸漬する位置に塗布したことを除いて実施例2と同様にしてスクミリンゴガイが生息できる環境を作り、実施例2と同じ評価を行った。この結果を表1に示した。
<Comparative example 2>
The same evaluation as in Example 2 was performed in the same manner as in Example 2 except that it was applied to a position immersed in water having a height of 10 cm to 25 cm. The results are shown in Table 1.
<比較例3>
銅粉を添加しなかったことを除き実施例2と同様にしてスクミリンゴガイが生息できる環境を作り、実施例2と同じ評価を行った。この結果を表1に示した。
<Comparative Example 3>
The same evaluation as in Example 2 was performed by creating an environment in which scallop apple mussels can inhabit in the same manner as in Example 2 except that copper powder was not added. The results are shown in Table 1.
Claims (5)
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JP2013141431A (en) * | 2012-01-10 | 2013-07-22 | Ono Doboku Kogyo Ltd | Method for preventing oviposition of apple snail |
WO2016186027A1 (en) * | 2015-05-15 | 2016-11-24 | 株式会社石橋 | Method and instrument for exterminating vermin |
JP7449016B2 (en) | 2023-08-02 | 2024-03-13 | 大栄工業株式会社 | trap |
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JPH024872A (en) * | 1988-06-22 | 1990-01-09 | Sanyuu Bussan Kk | Sterilizing, stain proofing and deodorizing method by fixing copper fine powder |
JPH02113840A (en) * | 1988-10-21 | 1990-04-26 | Norin Suisansyo Kyushu Nogyo Shikenjo | Copper-clad member for preventing oviposition of 'sukumiringo-kai' and use of same member |
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JP2013141431A (en) * | 2012-01-10 | 2013-07-22 | Ono Doboku Kogyo Ltd | Method for preventing oviposition of apple snail |
WO2016186027A1 (en) * | 2015-05-15 | 2016-11-24 | 株式会社石橋 | Method and instrument for exterminating vermin |
JP2016216376A (en) * | 2015-05-15 | 2016-12-22 | 株式会社石橋 | Extermination method for in-water harmful animal and extermination tool therefor |
JP7449016B2 (en) | 2023-08-02 | 2024-03-13 | 大栄工業株式会社 | trap |
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