JP5217029B2 - Termite control agent and termite control method - Google Patents
Termite control agent and termite control method Download PDFInfo
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Description
本発明は、害虫防除剤および害虫防除方法に関し、特に害虫に対して、優れた防除効果を示す害虫防除剤および害虫防除方法に関する。 The present invention relates to a pest control agent and a pest control method, and more particularly to a pest control agent and a pest control method that exhibit an excellent control effect against pests.
害虫の中でも、シロアリは人畜に直接の害を与えるものではないが、その生活に悪影響を与えるので、その防除が行われ、その防除のための薬剤として殺蟻剤等が使用されているが、一般にその毒性は強いので、その使用には問題がある。
最近では、健康および安全性に問題がないことが確認された害虫防除剤、ビフェントリンを用いる木材の表面処理が行われている(例えば、特許文献1参照。)。
シロアリの生態に関する研究において、シロアリにケイソウ土粉を混入した食べ物を摂取させて、シロアリにケイソウ土粉を食べさせたり、またシロアリをケイソウ土粉を下に敷いた容器内に入れておくと、粉はシロアリの体毛間隙や気管中を通り、皮膚上の脂質や水分によって付着するなどして、シロアリにケイソウ土粉が付着して、その摂取したケイソウ土粉、あるいは付着したケイソウ土粉がアリの体内消化器官や体表にキズを負わせ、体内消化器官や体表部から水分を蒸散させ、死に至らしめることが報告されている。このような生態については、別の種の穀物害虫についても知られている(例えば、特許文献2参照。)。
Among the pests, termites do not cause any direct harm to human livestock, but because they have an adverse effect on their lives, their control is performed, and anticides etc. are used as chemicals for their control, In general, its toxicity is strong and its use is problematic.
Recently, wood surface treatment using a pest control agent, bifenthrin, which has been confirmed to have no problem in health and safety has been performed (for example, see Patent Document 1).
In the research on termite ecology, if you eat food containing diatomaceous earth powder in termites, let them eat diatomaceous earth powder, or put termites in a container laid with diatomaceous earth powder, The powder passes through termite hairs and trachea, and adheres to the termites by lipids and moisture. The diatomaceous earth powder adheres to the termites, and the ingested diatomaceous earth powder or the adsorbed diatomaceous earth powder is ant. It has been reported that the body's digestive organs and body surface are scratched and water is evaporated from the body's digestive organs and body surface, leading to death. About such ecology, it is known also about another kind of grain pest (for example, refer to patent documents 2).
上記の生態を利用してシロアリを防除するためには、害虫にケイソウ土粉を摂取させたり、また害虫にケイソウ土粉を付着させる必要があり、特にケイソウ土粉を摂取させることなどはかなり困難なことであり、実用化することは難しいと考えられる。
少量の薬剤等の使用により害虫を十分有効に防除できる剤を用いることにより、効率良く多くの害虫を防除することができる方法を開発することが必要である。
In order to control termites using the above ecology, it is necessary to feed pests with diatomaceous earth powder, or to attach diatomaceous earth powder to pests, and it is particularly difficult to feed diatomaceous earth powder. It is difficult to put it into practical use.
It is necessary to develop a method that can efficiently control a large number of pests by using an agent that can sufficiently control the pests by using a small amount of a drug or the like.
本発明の目的は、少量の薬剤等の使用により害虫を十分有効に防除できる剤を用いることにより、効率良く多くの害虫を防除できる害虫防除剤および害虫防除方法を提供することにある。 An object of the present invention is to provide a pest control agent and a pest control method that can efficiently control many pests by using an agent that can sufficiently control pests by using a small amount of chemicals.
上記課題を達成するために、用いることができる効率の高い害虫防除剤および害虫防除方法を検討した結果、粉体等の担体に害虫防除剤を担持させて、害虫の体に付着し得るようにした媒体を用いることにより、上記目的を達成し得ることを見出し本発明に到達した。
即ち、本発明は以下のとおりである。
As a result of investigating highly effective pest control agents and pest control methods that can be used to achieve the above-mentioned problems, the pest control agent is supported on a carrier such as powder so that it can adhere to the pest body. The inventors have found that the above object can be achieved by using the medium thus obtained, and have reached the present invention.
That is, the present invention is as follows.
(1)無水ケイ酸及びそれに担持させたビフェントリンからなる媒体とゴマ油とを配合してなるシロアリ防除剤であって、前記シロアリ防除剤がシロアリに付着し、さらにシロアリ同士が接触することによって他個体のシロアリにも防除効果を与え得ることを特徴とするシロアリ防除剤。
(2)噴射剤を配合したエアゾール剤であることを特徴とする前記(1)に記載のシロアリ防除剤。
(3)無水ケイ酸及びそれに担持させたビフェントリンからなる媒体とゴマ油とを配合したシロアリ防除剤をシロアリに付着させ、前記シロアリ防除剤をシロアリ同士の接触によって別個体のシロアリに付着させることを特徴とするシロアリ防除方法。
(1) A termite control agent comprising a medium composed of silicic anhydride and bifenthrin supported thereon and sesame oil, wherein the termite control agent adheres to the termites, and further, the termites come into contact with each other. Termite control agent characterized by being able to give control effect to termites.
( 2 ) The termite control agent according to ( 1) above, which is an aerosol agent containing a propellant.
( 3 ) A termite control agent containing a sesame oil and a medium comprising silicic acid anhydride and bifenthrin supported thereon is attached to a termite, and the termite control agent is attached to a separate termite by contact between termites. Termite control method.
本発明は、害虫防除剤を害虫に直接噴霧してもよく、害虫の歩行する面にあらかじめ処理してもよい。この害虫防除剤に含まれる媒体を害虫に付着させ、この媒体を他個体の害虫に近接させることにより、優れた防除効果を得ることができ、特に害虫防除剤に含まれる媒体を害虫に付着させ、この媒体を害虫同士の接触によって別個体の害虫に付着させることを繰り返すことにより、さらなる優れた防除効果を得ることができ、極めて高い実用性を有するものである。 In the present invention, the pest control agent may be sprayed directly on the pest or may be pretreated on the pest walking surface. By attaching the medium contained in this pest control agent to the pest and bringing this medium close to the pests of other individuals, an excellent control effect can be obtained, and in particular, the medium contained in the pest control agent is attached to the pest. Further, by repeatedly attaching this medium to separate pests by contact between the pests, it is possible to obtain a further excellent control effect and have extremely high practicality.
以下に、本発明について詳細に説明する。
本発明の害虫防除剤は、害虫に付着し、さらに害虫同士が近接することによって他個体の害虫にも防除効果を与え得る、担体及びそれに担持させた害虫防除成分からなる媒体を配合したことを特徴とする。ここで、害虫防除成分の害虫防除とは、害虫を駆除すること、害虫を忌避することを含む意味であり、両者の機能を有してもよい。
本発明において媒体は、担体及びそれに担持させた害虫防除成分からなり、害虫の体表に付着性を有するものであり、少なくとも媒体が付着した害虫と他個体が近接することによって該他個体にも防除効果を与え得るものを意味する。ここで、他個体とは少なくとも媒体を含む害虫防除剤が体表に付着していない個体を意味する。なお、このことは媒体が付着した個体同士の防除効果を除く意味ではない。また、近接とは、該他個体への防除効果が可能な空間であって、他個体と少なくとも媒体が付着した害虫(個体と同意)との距離が通常の概念で近いことを意味し、本発明では両者の接触も包含する。担体及びそれに担持させた害虫防除剤からなる媒体のうち、一般的な成分を用いたものが他個体に防除効果を与える距離は0〜50cmであるが、より遠くまで効果を及ぼすものでもよい。更に、本発明において、他個体は、少なくとも媒体が付着した害虫と同種であっても、異種であってもよい。
本発明では、媒体としては、害虫に付着し、さらに害虫同士の接触によって他個体の害虫に付着し得るリレー化剤であることも好ましい。
本発明においてリレー化剤とは、害虫体表に付着した媒体が他個体の害虫の体表に接触し付着することで、次々とリレー的に防除効果を発揮し得るものをいう。
The present invention is described in detail below.
The pest control agent of the present invention is formulated with a carrier and a medium composed of a pest control component carried on the carrier, which adheres to the pest and can also give a pest control effect to other pests when the pests come close to each other. Features. Here, the pest control of the pest control component means to exterminate the pest and repel the pest, and may have both functions.
In the present invention, the medium is composed of a carrier and a pest control component carried on the carrier, and has adhesion to the body surface of the pest. It means what can give a control effect. Here, the other individual means an individual to which a pest control agent containing at least a medium is not attached to the body surface. This does not mean that the effect of controlling the individuals to which the medium is attached is excluded. In addition, proximity means a space in which the control effect on the other individual is possible, and the distance between the other individual and at least the pest to which the medium is attached (consent with the individual) is close by a normal concept. The invention also includes the contact of both. Of the medium composed of the carrier and the pest control agent carried on the carrier, the one using a general component gives a control effect to another individual in the range of 0 to 50 cm, but it may have an effect farther away. Furthermore, in the present invention, the other individual may be at least the same species or different species from the pests to which the medium is attached.
In the present invention, the medium is preferably a relay agent that adheres to pests and can adhere to pests of other individuals by contact between the pests.
In the present invention, the relay agent refers to a medium that can exert a control effect in a relay manner one after another because the medium attached to the pest surface contacts and adheres to the pest surface of another individual.
本発明の防除対象となる害虫の種類としては、例えば、双翅目(ハエ目)昆虫であるアカイエカ、ヒトスジシマカ等、膜翅目(ハチ目)昆虫、半翅目(カメムシ目)昆虫、等翅目(シロアリ目)昆虫であるヤマトシロアリ、イエシロアリ、ダイコクシロアリ等が対象害虫として挙げられるが、これらに限定されるものではない。 Examples of the pests to be controlled according to the present invention include, for example, mosquitoes and diptera that are diptera (flies) insects, hymenoptera (beeps) insects, hemiptera (stink bugs), etc. Examples of the target insects include, but are not limited to, the termite (termite order) insects such as Yamato termite, moth termite, and Dikok termite.
本発明に用いる媒体の担体としては、無機質粉体等であれば特に限定されないが、例えば、カオリン、クレー、タルク、活性白土、ケイソウ土、ケイ酸粉体等が挙げられる。また、実施を妨げない限り有機質粉体等でもよい。さらに、害虫に付着させるため、粉体等に静電気を帯電させたものでもよい。粉体としては、害虫に付着し易い粉体が好ましく、その平均粉体径は1〜10μmがよく、2〜4μmがより好ましい。粉体は媒体全量に対して0.1〜99.9重量%、好ましくは1〜98重量%として配合するのがよい。 The carrier of the medium used in the present invention is not particularly limited as long as it is an inorganic powder, and examples thereof include kaolin, clay, talc, activated clay, diatomaceous earth, and silicate powder. Further, organic powders may be used as long as the implementation is not hindered. Furthermore, in order to adhere to a pest, the powder etc. which charged the static electricity may be used. As the powder, a powder that easily adheres to pests is preferable, and the average powder diameter is preferably 1 to 10 μm, and more preferably 2 to 4 μm. The powder is blended in an amount of 0.1 to 99.9% by weight, preferably 1 to 98% by weight, based on the total amount of the medium.
本発明に用いる害虫防除成分としては、例えば、天然除虫菊エキス、ピレスロイド系(ピレトリン、フェノトリン、フタルスリン、レスメトリン、ペルメトリン、イミプロトリン、シフェノトリン、エトフェンプロックス、フェンプロパトリン、ビフェントリン、トランスフルトリン、メトフルスリン、プロフルスリン等)、カーバメイト系(プロポクスル、フェノブカルブ等)、有機リン系(ジクロルボス、フェニトロチオン等)、オキサジアゾール系(メトキサジアゾン等)、フェニルピラゾール系(フィプロニル等)、スルホンアミド系(アミドフルメト等)、ネオニコチノイド系(イミダクロプリド、ジノテフラン等)の殺虫剤などの害虫駆除成分、ディート(N,N−ジエチル−m−トルアミド)、p−メンタン−3,8−ジオール、フタル酸ジメチル、フタル酸ジブチル、MGK−11(2,3,4,5−ビス−(δ−ブチレン)−テトラヒドロフルフラール)、MGK−326(イソシンコメロン酸ジ−n−プロピル)、L−メントール、シネオール、α−ピネン、シトロネラール、カンファー、リナロール、精油類のハッカ油、レモングラス油、ゼラニウム油、レモンユーカリ油などの害虫忌避成分の化合物が例示でき、中でもピレスロイド系の化合物が好ましく、特にビフェントリンが好ましいが、これらに限定されるものではない。このような害虫防除成分は、媒体全量に対して害虫駆除成分の場合は0.1〜99重量%、好ましくは2〜90重量%として配合するのがよく、害虫忌避成分の場合は1〜99.9重量%、好ましくは20〜99重量%として配合するのがよい。なお、両者を用いる場合は、上記範囲から適宜選定される。 As the pest control component used in the present invention, for example, natural insecticide chrysanthemum extract, pyrethroid (pyretrin, phenothrin, phthalthrin, resmethrin, permethrin, imiprotorin, ciphenothrin, etofenprox, fenpropatoline, bifenthrin, transfluthrin, methfluthrin, Profluthrin etc.), Carbamate series (Propoxur, Fenobucarb, etc.), Organic phosphorus series (Dichlorvos, Fenitrothion etc.), Oxadiazole series (Metoxadiazone etc.), Phenylpyrazole series (Fipronil etc.), Sulfonamide series (Amidflumet etc.), Neonicochi Pest control components such as pesticides such as pesticides of imoids (imidacloprid, dinotefuran, etc.), diet (N, N-diethyl-m-toluamide), p-menthane-3,8-dio , Dimethyl phthalate, dibutyl phthalate, MGK-11 (2,3,4,5-bis- (δ-butylene) -tetrahydrofurfural), MGK-326 (di-n-propyl isocinchomeronate), L- Pest repellent compounds such as menthol, cineol, α-pinene, citronellal, camphor, linalool, essential oil mint oil, lemongrass oil, geranium oil, lemon eucalyptus oil can be exemplified, among which pyrethroid compounds are preferred, especially Bifenthrin is preferred, but is not limited thereto. Such a pest control component is blended in an amount of 0.1 to 99% by weight, preferably 2 to 90% by weight in the case of a pest control component with respect to the total amount of the medium. It is good to mix | blend as 0.9 weight%, Preferably 20 to 99 weight%. In addition, when using both, it selects from the said range suitably.
本発明において、害虫防除成分を担体に担持させる手段としては、特に限定されるものではなく、害虫防除成分と担体を直接接触、混合しても、溶剤等に害虫防除成分を溶解させたもので担体に接触させてもよい。また、害虫防除成分以外の後述される成分と共に同時に担体に担持させるようにしてもよい。更に、予め本発明に用いる媒体を作製したものを以下の成分と混合して害虫防除剤を作製してもよい。なお、本発明の害虫防除剤は、媒体のみからなるものでもよい。
本発明の害虫防除剤は溶剤として炭化水素類(灯油、ヘキサン等)、アルコール類(エタノール、イソプロパノール等)、エーテル類(ジエチルエーテル等)、エステル類(酢酸エチル等)、水などを配合してもよい。
In the present invention, the means for supporting the pest control component on the carrier is not particularly limited, and the pest control component is dissolved in a solvent or the like even if the pest control component and the carrier are directly contacted and mixed. You may make it contact a support | carrier. Moreover, you may make it carry | support to a support | carrier simultaneously with the components mentioned later other than a pest control component. Further, a pest control agent may be prepared by mixing a medium used in the present invention in advance with the following components. In addition, the pest control agent of the present invention may consist only of a medium.
The pest control agent of the present invention contains hydrocarbons (kerosene, hexane, etc.), alcohols (ethanol, isopropanol, etc.), ethers (diethyl ether, etc.), esters (ethyl acetate, etc.), water, etc. as solvents. Also good.
本発明の害虫防除剤は必要に応じて、グリセリン脂肪酸エステル、ヤシ油脂肪酸ソルビタンなどの保留剤、乳酸エステル、ポリビニルピロリドン、プロピレングリコール、グリセリン等の溶解助剤;クエン酸ナトリウム、リン酸ナトリウム等の防錆剤;ピペロニルブトキサイド(PBO)、N−オクチルビシクロヘプテンジカルボキシミド(MGK264)、1,1'−オキシビス[2,3,3,3−テトラクロロプロパン](S−421)、ごま油等の効力増強剤(共力剤)(媒体を含む原液に対して0.01〜99.9(重量(g)/容量(mL))%「以下、「w/v%」ともいう」が好ましく、0.025〜99.9w/v%が更に好ましい。);ラノリン等の展着剤;ポリフェノール、ラウリルメタアクリレート等の消臭剤;ハッカ油、ユーカリオイルなどの植物精油;グリーンノート系香料、フルーツノート系香料;又はその含有成分等を用いることができる。 The pest control agent of the present invention is optionally used as a retention agent such as glycerin fatty acid ester and coconut oil fatty acid sorbitan, a solubilizing agent such as lactic acid ester, polyvinylpyrrolidone, propylene glycol and glycerin; sodium citrate, sodium phosphate, etc. Antirust agent: piperonyl butoxide (PBO), N-octylbicycloheptene dicarboximide (MGK264), 1,1′-oxybis [2,3,3,3-tetrachloropropane] (S-421), sesame oil Efficacy enhancers (synergists) (0.01-99.9 (weight (g) / volume (mL))% of the stock solution containing the medium) “hereinafter also referred to as“ w / v% ”” 0.025 to 99.9 w / v% is more preferable.); Spreading agents such as lanolin; deodorants such as polyphenols and lauryl methacrylate; Plant essential oils such as oil and eucalyptus oil; green note-based fragrances, fruit note-based fragrances; or components thereof can be used.
本発明の害虫防除剤は電動式散布器などでもよいが、エアゾールまたは加圧式ハンドポンプがよく、なかでもエアゾールが好ましい。
本発明の害虫防除剤がエアゾールの場合は、噴射剤として窒素、二酸化炭素、空気などの圧縮ガス、ジメチルエーテル(DME)、液化石油ガス(LPG)、炭化水素類(プロパン、ブタン、ペンタン等)、ハロゲン化炭化水素のうちHFC−152a、HFC−134aなどの液化ガスなどが例示できる。本発明の害虫防除剤は、媒体を含む原液に対する噴射剤の容量比が1:9〜9:1として含有するのがよい。媒体は該原液に対して0.05〜99.9w/v%が好ましく、0.1〜20w/v%が更に好ましい。
The pest control agent of the present invention may be an electric sprayer or the like, but is preferably an aerosol or a pressurized hand pump, and of these, aerosol is preferred.
When the pest control agent of the present invention is aerosol, compressed gas such as nitrogen, carbon dioxide, air, dimethyl ether (DME), liquefied petroleum gas (LPG), hydrocarbons (propane, butane, pentane, etc.), Examples of halogenated hydrocarbons include liquefied gases such as HFC-152a and HFC-134a. The pest control agent of the present invention is preferably contained so that the volume ratio of the propellant to the stock solution containing the medium is 1: 9 to 9: 1. The medium is preferably 0.05 to 99.9 w / v%, more preferably 0.1 to 20 w / v% with respect to the stock solution.
本発明の害虫防除方法は、上記の害虫防除剤を害虫に直接噴霧してもよく、害虫の歩行する面にあらかじめ処理してもよい。また、この組成物に接触した害虫が、さらに他個体の害虫に接触することで、さらなる効果を得ることができる。
本発明は、害虫に対して優れた防除効果を奏する。床面、壁面、家具の表面などに現れた害虫だけでなく、隙間から出入りしている害虫に対しても有効である。
In the pest control method of the present invention, the pest control agent may be sprayed directly on the pest, or may be pretreated on the pest walking surface. Moreover, the further effect can be acquired because the insect pest which contacted this composition contacts the insect pest of another individual | organism | solid.
The present invention has an excellent control effect against pests. This is effective not only for pests appearing on the floor, wall surface, furniture surface, etc., but also for pests entering and leaving through the gaps.
以下に本発明を実施例によって更に具体的に説明するが、勿論本発明の範囲は、これらによって限定されるものではない。 The present invention will be described more specifically with reference to the following examples. However, the scope of the present invention is not limited to these examples.
〔実施例1〕
1.害虫防除剤の調製
下記表1に示す原液を各180mLと、噴射剤270mLとの合計290gをエアゾール缶に充填し、処方I〜IVのシロアリ防除製剤を調製した。
[Example 1]
1. Preparation of Pest Control Agent A total of 290 g of the stock solution shown in Table 1 below and 270 mL of propellant was filled into an aerosol can to prepare a termite control formulation of Formulas I to IV.
2.効力試験(パウダーによる連鎖効果確認試験)
供試虫として、ヤマトシロアリ(兵庫県赤穂市坂越の丘陵地に自生)を用いて、下記の方法により、効力試験を行った。
2. Efficacy test (confirmation test of chain effect with powder)
The test was carried out by the following method, using Yamato termites (naturally grown in the hills of Sakagoe, Ako City, Hyogo Prefecture) as test worms.
(評価方法)
(1)ガラスシャーレに各検体(上記処方I〜IV)を3.9g(6.1mL)噴霧し、溶剤を揮散させる。その乾燥させたガラスシャーレに色素で着色したヤマトシロアリを5頭入れ、30秒間歩行させる。
(2)新しいガラスシャーレに薬剤処理したヤマトシロアリ(着色済み)5頭と無処理のヤマトシロアリ5頭を同時に入れ、3分間同時歩行させる。
(3)新しいKPカップに各々のヤマトシロアリを別々に保管し、KT50(50%ノックダウンタイム)及び6時間後の致死率(%)を調べる。
(Evaluation method)
(1) 3.9 g (6.1 mL) of each specimen (prescriptions I to IV) is sprayed on a glass petri dish to volatilize the solvent. Five Yamato termites colored with pigment are placed in the dried glass petri dish and allowed to walk for 30 seconds.
(2) Put 5 termite termites (colored) and 5 untreated termites at the same time in a new glass petri dish and walk simultaneously for 3 minutes.
(3) Store each termite separately in a new KP cup and examine KT 50 (50% knockdown time) and lethality (%) after 6 hours.
3.結果・考察
処方I、IIでは薬剤処理面を歩行したヤマトシロアリは全数ノックダウン(KDと略す)し、6時間後の致死率も100%であった。また、薬剤処理のヤマトシロアリと同時歩行させたヤマトシロアリでも全数KDし、6時間後の致死率も100%であった。しかし、処方IIIでは、KDもせず、致死も確認できなかった。下記表2に試験結果を示す。
3. Results / Discussion In the prescriptions I and II, all the termites that walked on the drug-treated surface were knocked down (abbreviated as KD), and the mortality after 6 hours was 100%. In addition, all the termites that were walked at the same time as the drug-treated termites were KD, and the mortality after 6 hours was 100%. However, in prescription III, neither KD nor death was confirmed. The test results are shown in Table 2 below.
表2から明らかなように、本発明処方IとIIでは薬剤処理面歩行、及び同時歩行のヤマトシロアリのすべてがKD、致死した。しかし、処方IIIではKDも致死も確認できなかったことから、「パウダーが連鎖効果を発現する成分であり、ヤマトシロアリに対する致死効力をアップさせる」ことを示している。
よって、本発明の害虫防除剤において、パウダー(付着性を有する粉体が必須であり、更にごま油を含有することが好ましい結果を得た。
As is clear from Table 2, all of the termites that were walking on the drug-treated surface and simultaneously walking were killed and killed in the formulations I and II of the present invention. However, since neither KD nor lethality could be confirmed in Formula III, this indicates that “powder is a component that develops a chain effect and increases lethal efficacy against Yamato termites”.
Therefore, in the pest control agent of the present invention, powder (powder having adhesiveness is essential, and it is preferable to further contain sesame oil.
〔参考例1〕
1.害虫防除剤の調製
下記表3に示す原液を各60mLと、噴射剤240mLとの合計180gをエアゾール缶に充填し、処方1〜3の害虫防除剤を調製した。表3の害虫防除成分は、p−メンタン−3,8−ジオールを60重量%含有する。
[ Reference Example 1 ]
1. Preparation of Pest Control Agent A total of 180 g of the stock solution shown in Table 3 below and 240 mL of propellant was filled in an aerosol can to prepare pest control agents of Formulations 1-3. The pest control component in Table 3 contains 60% by weight of p-menthane-3,8-diol.
2.効力試験
φ85mm×80mmの円筒ゲージ内に供試虫(ヒトスジシマカの雌)15頭を放した。1mの距離から処方1、2または3の害虫防除剤で供試虫を0.5秒間噴霧することによりそれぞれ処理した。また、コントロールとして害虫防除剤無処理のものを用いた。
処理3分後に予め供試虫15頭を放した1辺25cmのケージ内に上記処理を施した供試虫を全て移し、処理後一定時間ごとに供試虫計30頭が放たれたケージ内に手を入れランディング数(吸血行動)を測定した。測定は、左右それぞれの手で2回ずつ実施した。
忌避率を以下の式から求め、結果を表4に示した。
忌避率(%)
={1−(検体でのランディング数/コントロールでのランディング数)}×100
2. Efficacy test Fifteen test insects (Human striped female) were released in a cylindrical gauge of φ85 mm × 80 mm. Each test insect was treated with a pest control agent according to Formula 1, 2, or 3 from a distance of 1 m for 0.5 seconds. Moreover, the thing without a pest control agent treatment was used as control.
3 minutes after the treatment, all the test insects subjected to the above treatment were transferred into a cage of 25 cm per side where 15 test insects were released in advance, and a total of 30 test insects were released every fixed time after treatment. The number of landings (blood sucking behavior) was measured. The measurement was performed twice with each left and right hand.
The repelling rate was calculated from the following formula, and the results are shown in Table 4.
Repellent rate (%)
= {1− (number of landings in specimen / number of landings in control)} × 100
上表より、本発明の処方1の害虫防除剤は、本発明外のものより忌避効果が優れることが分かる。 From the above table, it can be seen that the pest control agent of Formula 1 of the present invention has a better repellent effect than those outside the present invention.
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