JP4293682B2 - Clam attractant - Google Patents

Description

[0001]
[Technical field to which the invention belongs]
[0002]
TECHNICAL FIELD The present invention relates to an attractant for a corn that belongs to the order of the order Coleoptera, and more particularly relates to an attractant for a corn that features L-isoleucine methyl ester as an active ingredient.
[0003]
[Prior art]
[0004]
Adults of white clover (Scientific name: Proteaelia orientalis Gory et Perchelon) and core red clover (Scientific name: Oxycetonia jucunda Faldermann) are feeding on flowers, chestnuts and fruits.
[0005]
[Problems to be solved by the invention]
[0006]
It is very difficult to prevent or control the damage caused by the white clover and core crested corn with some conventional insecticides. Under such circumstances, in order to effectively control this pest, there has been a strong demand for a predictive means for accurately knowing its occurrence and a new type of control means different from conventional insecticides.
[0007]
[Means for Solving the Problems]
[0008]
Therefore, the present inventors conducted a search for attractant active substances of white and white clover. As a result, the presence of attracting active substances was identified. And by using this substance, it was found that the attractive effect of male white clam and core white clam against male and female adults was remarkably expressed and showed a practically effective attracting action. The present invention has been made based on these findings.
[0009]
The present invention provides an attractant for Clamoptera belonging to the family Coleoptera, characterized by containing L-isoleucine methyl ester as an active ingredient, and in particular, an attractant effective for white clam and core clover. It is to provide.
[0010]
The L-isoleucine methyl ester [IUPAC name: (2S, 3S)-(+)-2-amino-3-methylacidic methylester], which is an attracting active substance according to the present invention, is particularly effective against male and female adults of white-spotted clam and core-ohanamugu. Strong and attracting action and action stimulating action.
[0011]
The attractant according to the present invention can be prepared using L-isoleucine methyl ester by utilizing the formulation technique applied in the preparation of the normal attractant. For example, L-isoleucine methyl ester is used as it is or as a solution using an organic solvent such as dichloromethane, and this solution is adsorbed on a suitable carrier, for example, plastic such as polyethylene or rubber, or is made into a plastic capsule or capillary form. A suitable form of attractant can be obtained by using an appropriate material or instrument.
[0012]
When controlling white clam and core clover by attracting and killing, the attractant of the present invention is used by being incorporated in a suitable trap (capturer).
[0013]
【Example】
[0014]
Hereinafter, the present invention will be described in more detail with reference to examples.
[0015]
The attractant 1 of the present Example was produced by dissolving 100 mg of L-isoleucine methyl ester in 10 ml of dichloromethane.
[0016]
Then, the attractant 1 (1 mg) was impregnated into a rubber septum manufactured by Aldrich to obtain a practical form of the attractant 11.
[0017]
Further, the attractant 1 (1 mg) was impregnated into pellets made of a copolymer of ethylene-vinyl acetate manufactured by Tosoh Corporation to obtain a practical form of attractant 12.
[0018]
[Test example]
[0019]
As the present invention zone 1, ten plastic containers containing the attractant 11 obtained in the above example were prepared.
[0020]
As the present invention zone 2, ten plastic containers containing the attractant 12 obtained in the above example were prepared.
[0021]
As a control group, 10 empty plastic containers with nothing inside were prepared.
[0022]
Ten plastic containers of each section prepared above were set in plastic insect traps made by Japan Tobacco Inc., and 10 traps were prepared for each section.
[0023]
Using these traps, we conducted a catch test of white clam under the same environmental conditions at a chestnut producer in Yamanashi Prefecture from September 10th to September 17th. The average number of insects was determined.
[0024]
The result of the test was as shown in FIG.
[0025]
That is, the average number of insects trapped per trap in the invention group 1 was 97 animals / day (including 54 female adults and 43 male adults). In addition, the average number of insects trapped per trap in the invention group 2 was 210 / day (of which 110 female adults and 100 male adults). The average number of insects per trap in the control group was 1.2 / day.
[0026]
In addition, using these traps, we conducted a catching test of core red crested corn under the same conditions from April 20th to April 27th at Shizuoka Prefecture's fresh-flower production farmer. The average number of insects was determined.
[0027]
The test results were as shown in FIG.
[0028]
That is, the average number of captured insects per trap in the invention group 1 was 34 / day (including 19 female adults and 15 male adults). In addition, the average number of insects trapped per trap in the invention group 2 was 87 / day (including 46 female adults and 41 male adults). In addition, the average number of insects per trap in the control group was 0.6 / day.
[0029]
Considering the results of the above test examples, it was confirmed that the present invention group has an extremely high attracting effect on adult male and female adults of white clam and core clam.
[0030]
【The invention's effect】
[0031]
According to the attractant of this invention, it has a high attraction effect especially on the male and female adults of white clam and core clover.
In addition, by using the attractant of the present invention, it is possible to effectively control white-necked corn and core corn.
[Brief description of the drawings]
BRIEF DESCRIPTION OF DRAWINGS FIG. 1 is a graph showing the results of a trapping test for the attractant of the present invention against white clams.
FIG. 2 is a graph showing the results of a trapping test on the core of the present invention.

Claims (2)

  An attractant for white clam characterized by containing L-isoleucine methyl ester as an active ingredient.   An attractant for core corn, characterized by containing L-isoleucine methyl ester as an active ingredient.

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