JP4169331B2 - Sex attractant for Cossus insularis Staudinger - Google Patents
Sex attractant for Cossus insularis Staudinger Download PDFInfo
- Publication number
- JP4169331B2 JP4169331B2 JP2002355439A JP2002355439A JP4169331B2 JP 4169331 B2 JP4169331 B2 JP 4169331B2 JP 2002355439 A JP2002355439 A JP 2002355439A JP 2002355439 A JP2002355439 A JP 2002355439A JP 4169331 B2 JP4169331 B2 JP 4169331B2
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- JP
- Japan
- Prior art keywords
- sex attractant
- staudinger
- tetradecenyl acetate
- attractant
- sex
- 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.)
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- Agricultural Chemicals And Associated Chemicals (AREA)
Description
【０００１】
【発明の属する技術分野】
ヒメボクトウ（Ｃｏｓｓｕｓ ｉｎｓｕｌａｒｉｓ Ｓｔａｕｄｉｎｇｅｒ）の性誘引物質及びその性誘引剤に関するものである。
【０００２】
【従来の技術】
ヒメボクトウは、ヤナギ、ポプラ、ケヤキ、サクラ等の広葉樹を加害する鱗翅目害虫である。幼虫は材部の中心を摂食するため、本種の被害を受けた樹木は、枯れる等の直接的被害のほか、枝や幹の強度が低下し、強風により折れた枝が通行人を負傷させる等の二次的な被害も起こす。また、事例は多くないが果樹類も食害する等農業用害虫としての側面も有し、潜在的な農業害虫としても注目されている。
【０００３】
本種幼虫は樹木内部に侵入するため、散布した農薬が虫体に届かず、通常の防除方法により本種の被害を減らすことは極めて困難である。虫糞孔から薬液を直接注入する防除方法もあるが、防除適期の把握ができず有効な防除とは言い難いのが現状である。
【０００４】
害虫の防除適期を予測する方法の一つとしてフェロモントラップが知られているが、本害虫の性フェロモン及び性誘引物質に関する知見はなく、本害虫の発生予察にフェロモントラップを用いることができなかった。
【０００５】
【発明が解決しようとする課題】
本発明の目的は、ヒメボクトウの発生状況を把握するのに有効な性誘引物質及びその性誘引剤を提供しようとするものである。
【０００６】
【課題を解決するための手段】
本発明者らは、上記課題の解決のため、ヒメボクトウの性フェロモンの単離同定に関する研究を進めた。
実際には、ヒメボクトウ未交尾雌成虫が放出する揮発成分を固相微量抽出法により捕集し、捕集物をガスクロマトグラフィーにて化学分析すると同時に、ヒメボクトウ雄成虫の触角に電気生理学的反応を引きおこす活性成分を探索した。その結果、活性成分は（Ｅ）−３−テトラデセニルアセテートと推定されたので、化学合成した（Ｅ）−３−テトラデセニルアセテートと雌由来の活性成分をガスクロマトグラフィー質量分析によりマススペクトルを比較したところ完全に一致し、ヒメボクトウ雌成虫が放出している主要な性フェロモン成分が（Ｅ）−３−テトラデセニルアセテートであることが明らかとなった。
【０００７】
更に、本発明者らは鋭意研究を続けたところ、（Ｚ）−３−テトラデセニルアセテートが微量成分として、（Ｅ）−３−テトラデセニルアセテートに対して２〜５重量％の割合で存在することが明らかとなったが、本種の野外誘引試験において、（Ｅ）−３−テトラデセニルアセテートと（Ｚ）−３−テトラデセニルアセテートの混合比率は、本来の性フェロモン比率から大きく外れた、例えば９５：５から２：９８（重量比）でも予察に充分な誘引活性があることを見出し本発明の完成に至った。
【０００８】
本発明は、（Ｅ）−３−テトラデセニルアセテートを含むヒメボクトウの性誘引物質及びこのヒメボクトウ性誘引物質を含むヒメボクトウの性誘引剤を提供する。
【０００９】
【発明の実施の形態】
本発明のヒメボクトウの性誘引物質は、（Ｅ）−３−テトラデセニルアセテート、又は、（Ｅ）−３−テトラデセニルアセテートと（Ｚ）−３−テトラデセニルアセテートの混合物を含む。
（Ｅ）−３−テトラデセニルアセテートと（Ｚ）−３−テトラデセニルアセテートの混合比率は、特に限定されないが、好ましい重量比は９５：５から２：９８である。
これらの化合物は、例えば、特開平７−３３６８４号公報に記載の方法で得られた（Ｚ）−３−テトラデセン−１−オールを公知の方法で異性化した後、アセチル化剤でアセチル化すること等によって合成できる。
【００１０】
本発明の性誘引剤は、使用に際し、ブチルヒドロキシトルエン、ブチルヒドロキシアニソール、ハイドロキノン、ビタミンＥ等の抗酸化剤や２−ヒドロキシー４−オクトキシベンゾフェノン等の紫外線吸収剤を、性誘引物質である（Ｅ）−３−テトラデセニルアセテート又は（Ｅ）−３−テトラデセニルアセテートと（Ｚ）−３−テトラデセニルアセテートの混合物の重量に対して、１〜５重量％含有しても良い。
【００１１】
本発明において、有効成分の一定量の放出を長期間にわたり持続させるために、性誘引剤を、好ましくは、ゴム、ポリエチレン、ポリプロピレン、エチレン−酢酸ビニル共重合体、ポリ塩化ビニル等の放出量制御機能を有する物資からなるキャップ、細管、ラミネート製の袋、カプセル等の容器に充填して用いられる。本発明の性誘引剤の好ましい使用量は、容器あたり０．１〜１０ｍｇである。
【００１２】
【実施例】
以下、本発明の具体的態様を実施例及び比較例によって説明するが、本発明はこれらに限定されるものではない。
実施例１〜３及び比較例１
表１に誘引物質として使用した合成性フェロモン物質（定法により化学合成）の種類と組成比を示した。これらに、２．０重量％のブチルヒドロキシトルエンを添加したものを、それぞれイソプレンよりなるゴムキャップに担持させ一晩放置後、白色粘着型トラップに取り付けた。
各誘引剤が装着されたトラップをヤナギ林内に各誘引源当たり４基設置し、誘引されたヒメボクトウ成虫数を調査した。６月下旬から７月中旬までの捕獲数を表２に示した。
性フェロモンを含まないゴムキャップには一頭も誘引されなかった（比較例１）が、実施例１〜３には誘引が認められた。（Ｅ）−３−テトラデセニルアセテートの含有量を減らしていくと誘殺数の低下が認められるが、一日あたりの１トラップの捕獲数は１．５頭もあり、発生予察に使用できる誘殺が認められていることが分かる。
【００１３】
【表１】
【表２】
＊＊ ゴムキャップのみを装着したフェロモントラップを用いた。
【００１５】
【発明の効果】
本発明によれば、ヒメボクトウの雄成虫を効率的に誘引し、発生状況を知るのに有効である。[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a sex attractant of Cossus insularis Staudinger and its sex attractant.
[0002]
[Prior art]
Himebokuto is a lepidopterous pest that harms broad-leaved trees such as willow, poplar, zelkova, and cherry. Since the larvae feed on the center of the timber, the trees damaged by this species will not only suffer direct damage such as withering, but the strength of the branches and trunk will decrease, and the branches broken by strong winds will injure passersby It causes secondary damage such as letting go. In addition, although there are not many examples, it also has an aspect as an agricultural pest, such as feeding on fruit trees, and is attracting attention as a potential agricultural pest.
[0003]
Since this species larva penetrates the inside of the tree, the sprayed pesticides do not reach the insect body, and it is extremely difficult to reduce the damage of this species by ordinary control methods. Although there is a control method in which a chemical solution is directly injected from the worm excretion, it is difficult to say the effective control because it is not possible to grasp the appropriate control time.
[0004]
The pheromone trap is known as one of the methods for predicting the appropriate period of control for pests, but there is no knowledge about the sex pheromone and sex attractant of this pest, and the pheromone trap could not be used to predict the occurrence of this pest. .
[0005]
[Problems to be solved by the invention]
An object of the present invention is to provide a sex attractant and an sex attractant that are effective for grasping the state of occurrence of Himebokuto.
[0006]
[Means for Solving the Problems]
In order to solve the above-mentioned problems, the present inventors proceeded with research on the isolation and identification of the romance sex pheromone.
In practice, the volatile components released by adult females of the anteater are collected by solid-phase microextraction, and the collected material is chemically analyzed by gas chromatography. Searched for active ingredients to cause. As a result, since the active ingredient was estimated to be (E) -3-tetradecenyl acetate, the chemically synthesized (E) -3-tetradecenyl acetate and the active ingredient derived from female were analyzed by gas chromatography mass spectrometry. When the mass spectra were compared, it was completely consistent, and it was revealed that (E) -3-tetradecenyl acetate was the main sex pheromone component released by adult females.
[0007]
Furthermore, when the present inventors continued earnest research, (Z) -3-tetradecenyl acetate is 2-5 weight% with respect to (E) -3-tetradecenyl acetate as a trace component. In the field attraction test of this species, the mixing ratio of (E) -3-tetradecenyl acetate and (Z) -3-tetradecenyl acetate was the original ratio. It was found that there was an attractive activity sufficient for prediction even when the ratio was significantly different from the sex pheromone ratio, for example, from 95: 5 to 2:98 (weight ratio), and the present invention was completed.
[0008]
The present invention provides a snake attractant sex attractant containing (E) -3-tetradecenyl acetate, and a snake attractant sex attractant containing the beetle attractant.
[0009]
DETAILED DESCRIPTION OF THE INVENTION
As for the sex attractant of the asterisk of the present invention, (E) -3-tetradecenyl acetate or a mixture of (E) -3-tetradecenyl acetate and (Z) -3-tetradecenyl acetate is used. Including.
The mixing ratio of (E) -3-tetradecenyl acetate and (Z) -3-tetradecenyl acetate is not particularly limited, but a preferred weight ratio is 95: 5 to 2:98.
These compounds are, for example, isomerized (Z) -3-tetradecen-1-ol obtained by the method described in JP-A-7-33684 by a known method and then acetylated by an acetylating agent. Can be synthesized.
[0010]
The sex attractant of the present invention is a sex attractant, when used, an antioxidant such as butylhydroxytoluene, butylhydroxyanisole, hydroquinone, vitamin E, or an ultraviolet absorber such as 2-hydroxy-4-octoxybenzophenone ( 1) to 5% by weight based on the weight of E) -3-tetradecenyl acetate or a mixture of (E) -3-tetradecenyl acetate and (Z) -3-tetradecenyl acetate Also good.
[0011]
In the present invention, in order to maintain a certain amount of release of the active ingredient over a long period of time, the sex attractant is preferably controlled to release the rubber, polyethylene, polypropylene, ethylene-vinyl acetate copolymer, polyvinyl chloride, etc. It is used by filling containers such as caps, thin tubes, laminated bags, capsules and the like made of functional materials. The preferable usage-amount of the sex attractant of this invention is 0.1-10 mg per container.
[0012]
【Example】
Hereinafter, although the specific aspect of this invention is demonstrated by an Example and a comparative example, this invention is not limited to these.
Examples 1 to 3 and Comparative Example 1
Table 1 shows the types and composition ratios of synthetic pheromone substances (chemical synthesis by a conventional method) used as attractants. Those added with 2.0% by weight of butylhydroxytoluene were each supported on a rubber cap made of isoprene, allowed to stand overnight, and then attached to a white adhesive trap.
Four traps equipped with each attractant were installed in each willow forest in the willow forest, and the number of attracted beetles was investigated. Table 2 shows the number of catches from late June to mid-July.
Although no one was attracted to the rubber cap containing no sex pheromone (Comparative Example 1), attraction was observed in Examples 1 to 3. (E) When the content of 3-tetradecenyl acetate is reduced, the number of killings is reduced, but the number of traps per trap is 1.5, which can be used to predict the occurrence. It turns out that killing is allowed.
[0013]
[Table 1]
[Table 2]
** A pheromone trap with only a rubber cap was used.
[0015]
【The invention's effect】
INDUSTRIAL APPLICABILITY According to the present invention, it is effective for efficiently attracting male larvae and knowing the state of occurrence.
Claims (2)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2002355439A JP4169331B2 (en) | 2002-12-06 | 2002-12-06 | Sex attractant for Cossus insularis Staudinger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2002355439A JP4169331B2 (en) | 2002-12-06 | 2002-12-06 | Sex attractant for Cossus insularis Staudinger |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2004189607A JP2004189607A (en) | 2004-07-08 |
| JP4169331B2 true JP4169331B2 (en) | 2008-10-22 |
Family
ID=32756142
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2002355439A Expired - Lifetime JP4169331B2 (en) | 2002-12-06 | 2002-12-06 | Sex attractant for Cossus insularis Staudinger |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP4169331B2 (en) |
-
2002
- 2002-12-06 JP JP2002355439A patent/JP4169331B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JP2004189607A (en) | 2004-07-08 |
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