JP6948882B2 - Termite colonization improvement method and termite poison bait - Google Patents

Description

The present invention relates to a method for improving termite colonization and a termite poison bait. More specifically, the present invention comprises a method for improving termite fixation, wherein the opening area of all holes in the porous termite eating material is 4 mm ² or more and 12 mm ² or less, and the opening area of all holes is 4 mm ² or more. The present invention ^{relates to a porous termite eating material having a size of 12 mm 2} or less, and a termite poisoning bait in which the porous termite eating material contains a poisoning agent.

Termites are said to be the most destructive structural pests that damage the wood materials of houses and other buildings such as houses and cultural properties. Termites devour nearby wood and other cellulose-containing substances, but these damaged parts are usually hidden inside wood materials and in the soil, so they are often undetectable until the damage becomes serious.
As a practical termite extermination method, a preparation containing an insecticidal active ingredient such as a pyrethroid compound or a neonicotinoid compound is sprayed on a place damaged by termites or a place where termites invade a house. There is a method (for example, Patent Document 1 etc.). However, it is difficult to destroy the entire termite nest with this method. On the other hand, as a termite extermination method for destroying the entire termite nest, a bait method is adopted in which termites are exterminated by ingesting a poison bait agent (bait agent) mixed with an insecticidal active ingredient (for example, Patent Document 2 etc.). ). This bait method has the advantage of not polluting the environment because it uses a limited amount of chemicals, but has the disadvantage that it takes a long period of several months to destroy termite nests.

Japanese Patent Application Laid-Open No. 2006-515374 Japanese Unexamined Patent Publication No. 2002-212011

Termites are extremely sensitive creatures to stimuli and are sensitive to light, sound, vibration and odor. Therefore, it does not settle in one place, but constantly moves to various places and moves around. For this reason, it is a creature that is difficult to collect in one place and settle in that place. On the other hand, if it can be collected and fixed in one place, termites can be exterminated by applying an insecticide there. In addition, if a poison bait is installed at that location, termites can be exterminated by installing it only once. Therefore, it has been required to collect them in one place and fix them on the spot, and to obtain a reliable extermination effect.
Therefore, an object of the present invention is to provide a method for improving termite colonization, a porous termite eating material for improving termite colonization, and a termite poison bait using the same.

As a result of intensive research to solve the above problems, the present inventor has dramatically set the termite fixation by setting the opening area of all the holes in the porous termite eating material to 4 mm ² or more and 12 mm ^{2 or less.} It was found that it would be improved, and the above problems were solved.

Specifically, the gist of the present invention is as follows.
1. 1. A method for improving termite fixation, wherein the opening area of all the holes in the porous termite eating material is 4 mm ² or more and 12 mm ^{2 or less.}
2. A porous termite eating material, characterized in that the opening area of all holes is 4 mm ² or more and 12 mm ^{2 or less.}
3.2. A termite venom prey, wherein the porous termite eating material described contains a toxicant.

The termite fixation improving method of the present invention exerts an effect of dramatically improving termite fixation on the eating material by setting the opening area of all the holes in the porous termite eating material to 4 mm ² or more and 12 mm ^{2 or less.} It is a thing.
Further, since the porous termite eating material of the present invention is excellent in fixing termites, a termite poison bait containing a termite poisoning agent can obtain an excellent termite extermination effect and is practical. ..

FIG. 1 is a diagram showing an outline of a termite colonization evaluation test. FIG. 2 is a diagram showing the relationship between the number of termite settlements and the opening area of the holes as a result of the termite fixation evaluation test.

Hereinafter, the method for improving termite colonization of the present invention, the porous termite eating material, and the termite poison bait using the same will be described in detail.

The porous termite eating material in the present invention is characterized in that ^{the opening area of all the holes is 4 mm 2} or more and 12 mm ^{2 or less.} The material can be made porous in which all the holes have a specific opening area, and is not particularly limited as long as termites prefer to eat. Specific examples include, for example, a cellulose-containing material. Examples of the cellulose-containing material include so-called wood materials such as timber pieces and sawdust, and various cellulose products. Examples of the tree species of the wood material include coniferous trees such as Japanese red pine, Japanese black pine and hemlock, and broad-leaved trees such as hippopotamus and pecan. Examples of the cellulose product include cellulose powder, crystalline cellulose, fibrous cellulose and the like, as well as cellulose-containing paper such as cellulose paper, starch-containing paper and inorganic fiber paper. Of these, wood materials or cellulose-containing paper are preferable because of their good processability. As the porous termite eating material of the present invention, a material obtained by processing a piece of lumber or wood powder into a porous structure or a material obtained by processing a cellulose-containing paper into a porous structure is preferable.

Setting the opening area of the porous termite eating material in the present invention in ^{the range of 4 mm 2} or more and 12 mm ² or less has a critical meaning of improving the fixation of termites. The lower limit of the opening area ^{is preferably 5 mm 2} or more, and more preferably 6 mm ² or more. The upper limit ^{is preferably 11 mm 2} or less.
The holes in the porous termite eating material of the present invention mean having a depth that allows various termites to enter, specifically, a depth of at least 10 mm or more, and do not include dents (dimples). The opening shape is not particularly limited, but a round shape or a polygonal shape such as a triangle or a square is preferable. Further, the porous termite eating material of the present invention is preferable because when all the pores penetrate the porous termite eating material, the number of entrances and exits of termites increases and the fixation is further improved. In this case, a plurality of pores may intersect inside the porous termite eating material. The length of the hole penetrating the porous termite eating material is preferably at least 10 mm or more, and more preferably 15 mm or more, in consideration of the ability of termites to enter from both ends of the hole.

The shape of the porous termite eating material of the present invention can take various shapes such as a rectangular parallelepiped, a columnar shape, a spherical shape, and a honeycomb shape, and the shape and dimensions thereof are not particularly limited. When the shape is a rectangular parallelepiped, the dimensions one side or greater than 1cm in diameter, less than 15cm, top (bottom) is greater than 10 cm ^2, etc. 225 cm ² less than rectangular, rectangular, circular, oval, height It is preferably larger than 1 cm and smaller than 30 cm.

The porous termite eating material of the present invention preferably contains a poisoning agent and is used as a termite poisoning bait. The termite poisoning agent may be any one that is lethal by oral ingestion of termites, and examples thereof include known termite killing active compounds, insect growth regulators, termite control agents, and the like, but are not particularly limited. .. Specific examples include, for example, natural pyrethrin, alesulin, resmethrin, flamethrin, prarethrin, terraresulin, phthalthrin, phenothrin, permethrin, ciphenotrin, cypermesrin, transfluthrin, metoflutrin, profluthrin, imiprothrin, empentrin, etofenprox, silafluone, etc. System compounds; Carbamate compounds such as propoxul and carbalyl; Organic phosphorus compounds such as fenitrothione and DDVP; Oxaziazole compounds such as methoxadiazone; Phenylpyrazole compounds such as fipronil; Pyrethroid-killing active compounds such as neonicotinoid compounds such as; benzoylphenylurea compounds such as diflubenzurone, bistriflulone, novallon, nobiflumuron, ruphenuron, hexaflumron, chlorfluazuron; Young hormone-like compounds; Insect growth regulators such as anti-young hormone-like compounds such as plecosene; Depending on the situation, a synergist such as cinepyrin and piperonyl butoxide may be used in combination. As the poisoning agent contained in the porous termite eating material of the present invention, a slow-acting insect growth regulator is preferable, and a benzoylphenylurea compound is particularly preferable.
Further, an attractant that attracts termites may be used in combination, and the attractant that can be used is not particularly limited as long as it is a substance that attracts termites. Specifically, for example, animal and plant extracts; proteins such as casein; plant powders such as starch, wheat flour, rice flour, bran, corn flour; sugar, honey, waste sugar honey, isomerized sugar, sucrose, liquid sugar, maltose, etc. Sugars such as sugar cane juice; amino acids such as proline; vegetable oils such as corn oil, castor oil, olive oil, soybean oil, rapeseed oil, peanut oil; (3S, 4R, 6E, 10Z) -3,4,7,11- Tetramethyl-trideca-6,10-dienal, (z) -9-hexadecenal, 2,5-dimethylpyrazine, 8-methyl-2,5-dimethylpyrazine, Z, E- or E, E-α-flanesene, etc. Examples include corn, which is a guide to the road.

The termite poison bait of the present invention is preferably used in a container. The material of the container is not particularly limited as long as it is resistant to deterioration in the ground or on the surface of the earth and has excellent moisture resistance, and resin, glass, metal, or the like can be used. The shape of the container is not particularly limited as long as it has a space for storing the termite poison bait of the present invention, that is, a porous termite eating material containing a poisoning agent. For example, shapes such as a cube, a rectangular parallelepiped, a sphere, a prism, a cylinder, a rod, a cone, a pyramid, an egg, and a PET bottle can be exemplified.

The termites to which the termite poison bait of the present invention is effective are, for example, termite insects belonging to the termite family, termite family, termite family, termite family, termite family, termite family, termite family, termite family. Say. Specifically, Yamato termites, termites, American termites, termites, termites, termites, termites, termites, termites, termites, termites, termites, termites, termites, termites, termites, termites, termites, termites, termites, termites, termites, termites, termites. , Termites, Takasago termites, Nitobe termites, Musha termites, etc., Eastern subterranian termites, Western subterranian termites, Dark Southern subterranian termites, Aridland subterranian termites, Desert subterranian termites, and Nevada dumpwood termites, etc. Can be mentioned.

The termite poison bait of the present invention is installed and used in the termite habitat. Specifically, for example, the termite poison bait of the present invention is placed in a place where termites inhabit or where termites are expected to invade, such as a damaged part of termites, a path of termites, under the floor of a house, and soil around a house. Can be used as it is or by storing it in a suitable container and installing it.

Hereinafter, the present invention will be described in more detail with reference to formulation examples, test examples, and the like, but the present invention is not limited to these examples.

<Termite colonization evaluation test>
(1) Test Specimen A corrugated plate-shaped kraft paper (thickness 0.15 mm) was sandwiched between two plate-shaped kraft papers (thickness 0.2 mm) and adhered to form a porous termite eating material. It was used as a sample. The opening areas of the holes (holes formed between the corrugated paperboard and the paperboards located above and below the corrugated paperboard) of the test samples 1 to 6 are shown below. Since the opening shape is roughly triangular, the opening area was calculated by the formula of width (mm) x height (mm) / 2. Further, kraft paper (thickness 0.2 mm) having no holes was used as a non-porous termite eating material as a blank sample.
The size of both the test sample and the blank sample is 40 mm × 40 mm.
Test sample 1: Opening area 16.8 mm ² (4.2 mm x 8 mm / 2)
Test sample 2: Opening area 11.7 ^{mm 2} (3.4 mm x 6.9 mm / 2)
Test sample 3: Opening area 7.5 mm ² (2.6 mm x 5.8 mm / 2)
Test sample 4: Opening area 4.8 mm ² (2.0 mm x 4.8 mm / 2)
Test sample 5: Opening area 3.0 mm ² (1.9 mm x 3.2 mm / 2)
Test sample 6: Opening area 2.0 mm ² (1.25 mm x 3.2 mm / 2)

(2) Termite colonization confirmation test method The outline of the test is shown in FIG.
A test sample (40 mm x 40 mm) or a blank sample (40 mm x 40 mm) is placed in the center of a glass petri dish with a diameter of 90 mm, and feeding areas (paper moistened with water, 20 mm x 20 mm) are placed at both ends of the test sample (40 mm x 40 mm). bottom. Here, 100 termites (Reticulitermes speratus, professional ants) were released, and 12 hours later, the number of termites colonized on the blank sample in the hole of the test sample was counted. The test was performed three times, and the average value was taken as the number of termite colonization.
The above test samples and the number of termite colonizations are shown in Table 1 and FIG.

(3) Evaluation of termite colonization Since termites are organisms that prefer moisture, in the above termite colonization confirmation test system, they usually colonize in two moist feeding areas instead of dry test specimens. Assumed, it was confirmed from the results of the blank specimens in Table 1 that they settled in the feeding area.
However, although the test samples 2 to 4 are dry, it has been clarified that the termites that prefer moisture are improved by about 10 times or more than the blank sample, and the fixation in the test sample 3 is improved by about 23 times. ..
On the other hand, according to the follow-up observation, the test sample 1 does not settle even if it invades the hole, but exits from the hole and settles in a moist feeding ground, and in the test samples 5 and 6, it invades the hole. It was also confirmed that it settled in a damp feeding area without any problems.
Based on these results, it was clarified that there is a suitable opening area for termites to settle. That is, it was clarified that the fixation of termites was particularly enhanced in the range of the opening area of the holes in the porous termite eating material in ^{the range of 4 mm 2} or more and 12 mm ^{2 or less.}
This numerical range is critical and is a finding newly discovered by the present inventor, and the effect of the present invention obtained thereby is particularly remarkable.

INDUSTRIAL APPLICABILITY The present invention exhibits an excellent effect that the fixation of termites to the eating material is dramatically improved by setting the opening area of all the holes in the porous termite eating material to 4 mm ² or more and 12 mm ^{2 or less.} ..
Therefore, the termite poison bait of the present invention in which the porous termite eating material contains a poisoning agent exhibits an excellent termite extermination effect because it is highly fixed to termites, and is very practical.

Claims (3)

It is characterized by using a porous structure in which the opening area of all the holes in the porous termite eating material is 4 mm ² or more and 12 mm ² or less, and all the holes penetrate the porous termite eating material and allow termites to invade from both ends. How to improve termite colonization. A porous termite eating material (however, pine wood) , characterized in that the opening area of all the holes is 4 mm ² or more and 12 mm ² or less, and all the holes penetrate and the termites can invade from both ends. (Excluding cellulose sheets containing one or more termite-attracting substances selected from the group consisting of water extracts, pine fats, rosins and termite-attracting pheromones) . The termite poisoning bait containing the porous termite eating material according to claim 2 and a termite poisoning agent.

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