JPH02131416A - Cockroach attractant - Google Patents

Abstract

PURPOSE:To obtain a cockroach attractant having excellent attracting action and attraction speed, resistant to degradation and capable of keeping the effect over a long period by using an extract liquid of a plant of genus Crataegus, family Rosaceae as an active component. CONSTITUTION:A plant of genus Crataegus, family Rosaceae (e.g., Nippon hawthorn, Crataegus Maximowiczii and Crataegus chlorosarca) is crushed and stirred in the presence of water or various organic solvents e.g., at about 10-90 deg.C for about 0.5-5hr to easily obtain an extract liquid. The water and organic solvent for extraction may be used singly or as a combination of plural solvents. The amount of the solvent is 1-20 pts.wt. based on 1 pt.wt. of crushed hawthorn. The attractant exhibit remarkable attracting effect especially against the larva of German cockroach at a low rate of application.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention relates to an attractant for attracting and capturing cockroaches.

[Prior art and problems to be solved by the invention] It has been known for a long time that pests such as the cockroach species η attract members of the same species collectively through their secretions, feces, or extracts. ing. It has been proposed to utilize these properties to capture cockroaches (see, for example, Japanese Patent Publication No. 18518/1983). However, in order to capture and exterminate cockroaches by such a method, a large number of cockroaches are required, and it is extremely difficult and impractical to collect a large amount of insect feces. In addition, methyl or ethyl esters of fatty acids such as myristic acid and palmitic acid (Japanese Patent Publication No. 44-320), saturated or unsaturated aliphatic alcohols (Japanese Patent Publication No. 44-11920), and non-reducible starch. Hydrolyzate (JP-A-50-88235),
Carboxylic acid esters having a cyclohexyl group (JP-A-50-88234), aromatic aliphatic ketones, alcohols, aldehydes, lactones, esters (JP-A-50-49434, JP-A-50-53540), aloe plants and extract (Japanese Unexamined Patent Publication No. 61-291505), eucalyptus leaves or extract components thereof, ketones having 7 to 9 carbon atoms (Japanese Unexamined Patent Publication No. 62-114904)
, vanillin, ethylvanillin, isovanillin, piperonal, piperonal acetone, 2.6-nonadienal, 2,6-nonadienol (Japanese Patent Publication No. 11367/1983), kakitsubata seed oil, iris seed oil, iris seed oil, iris seed oil Oil (JP-A-62-13
No. 5403), pine resin (Japanese Patent Application Laid-open No. 12504/1983)
No. 1), sesame oil (JP-A-1982-1982 represents a monocyclic or branched alkyl group, R2 represents a hydrogen atom or a methyl group, and R represents a hydroxyl group or an amine group).
A large number of natural or synthetic compounds have been proposed as attractants for cockroaches, such as Japanese Patent Publication No. 96101). However, these substances have weak attracting effects,
Or it may be an expensive substance that is difficult to manufacture.
None of them can be put to practical use satisfactorily. Food products include milk, cheese, krill powder,
Animal substances such as powder samples, bran, wheat flour, wood flour, or mixtures thereof (Japanese Unexamined Patent Publication No. 62-278930), animal proteins such as gelatin, fish protein, and casein, animal meat, and animal meat extracts are treated with acids or alkalis. , a heating reaction product of an extract hydrolyzed with an enzyme, etc., and glucose, fructose (
JP-A No. 57-95904), a composition obtained by acid decomposing defatted lees of grains such as soybean, corn, cottonseed, rapeseed, sesame, etc., and then concentrating and neutralizing them (JP-A No. 53-15424);
A mixture of fish meal, wheat flour, soybean oil cake, rice bran, feed yeast, and sesame oil meal (Japanese Unexamined Patent Application Publication No. 132237/1982) has been proposed, but these are susceptible to deterioration and have problems in the duration of their effects.

[Means to solve the problem]

In view of the above-mentioned current situation, the present inventors investigated many substances in order to find a cockroach attractant that has an excellent attracting effect on cockroaches and is easily available. The aqueous extract of the plant has excellent effects in common regardless of whether the cockroach is a larva or an adult, regardless of gender or type of cockroach, and in particular has an extremely excellent effect on German cockroach larvae. They discovered this and completed the present invention.

That is, the present invention relates to a cockroach attractant characterized by containing an extract of a plant of the genus Crathorn in the Rosaceae family as an active ingredient.

The cockroach attractant of the present invention is resistant to deterioration, has a long duration of effect, has an attracting effect over a distance of about 10 times the body length of cockroaches, and has a fast attracting speed. It has the property that it is very fast (within 3 minutes) and has a long retention effect of 10 to 30 minutes on the attracted cockroaches, so it can effectively attract cockroaches.

The hawthorn used in the present invention includes plants of the genus Hawthorn (
Any type of flower belonging to the Rosaceae family can be used; for example, hawthorn, red hawthorn, walnut hawthorn, yellow hawthorn, arage hawthorn, birch hawthorn, white hawthorn, yellow hawthorn, kireba hawthorn, keoho hawthorn, horiba hawthorn, Examples include hawthorn, hawthorn, hawthorn, and hawthorn. The extract used in the present invention is
It can be easily obtained by crushing the hawthorn plant and extracting it in the presence of water or various organic solvents at a temperature range of about 10 to 90°C, for example, while stirring for about 0.5 to 5 hours. . In the above extraction, the water or organic solvent used can be used alone or in combination. The amount of water or organic solvent used is usually about 1 to 20 times the weight of the crushed hawthorn.

Furthermore, if necessary, it can be concentrated to an appropriate concentration and used. The extract thus obtained can be used as it is as a cockroach attractant, but it may also be used after being adsorbed onto a suitable carrier or food, mixed or decomposed. Further, the cockroach attractant of the present invention may be mixed with an insecticide, a bactericide, and the like.

There is no particular restriction on the effective amount of the cockroach attractant of the present invention, since it exhibits an attracting effect in a small amount.

The reason why the cockroach attractant of the present invention exhibits an extremely effective attracting effect on cockroaches is currently not clear, but one or more components in Crathorn plants are strongly involved in the attracting effect. It is thought that this is the case.

〔Example〕

Next, the present invention will be explained with reference to Examples, but the present invention is not limited to these Examples.

Example 1 (Attractive effect on the German cockroach and the American cockroach) FIG. 1 is a schematic back view of the experimental apparatus when testing the German cockroach, and FIG. 2 is a schematic side view when testing the German cockroach.

For the German cockroach, fold two pieces of filter paper 3.8 x 10 cm into the center of a plastic bat measuring 31 x 37 cm into a W-shape, as shown in Figure 1.
The filter paper 2 was placed vertically at a distance of 5 cm and placed in a vat, and an aqueous extract sample of hawthorn fruit was dropped onto one of the filter papers 2 at 4 locations using a Pasteur pipette, and the other filter paper 3 was used as a control filter paper without any sample dropped thereon. A total of 20 young German cockroach larvae or 10 male and 10 female adult German cockroaches were released into a vat, and 3 minutes after the release of the cockroaches, it was determined which filter paper they had gathered on. In the case of the American cockroach, as shown in Fig. 2, in the center of a plastic bat 1 of similar size, Place two pieces of filter paper folded into three with a size of 5 x LO cm about 15 cm apart, and place one filter paper 2
An aqueous extract sample of hawthorn fruit was dropped onto the filter paper at three locations using a bathtool pipette, and the other filter paper 3 was used as a control filter paper on which no sample was dropped. As in the case of the German cockroach, a total of 20 adult cockroaches were released, 10 each, and after 3 minutes it was determined which filter paper they had gathered on. The results are shown in Table 1.

1st table + Less than 15% of the test insects are collected on the sample filter paper + 10 15% or more and less than 30% of the test insects are collected on the sample filter paper ++ 10 More than 30% of the test insects are collected on the sample filter paper 1st As shown in the table, as the amount of hawthorn extract added increased, the percentage of cockroaches that passed through the filter paper to which the sample was added increased. In particular, it was highly effective against German cockroach larvae with a small amount added. From this, it is clear that the use of hawthorn extract as a cockroach IJ fi attractant is an extremely effective means.

[Brief explanation of the drawing]

FIG. 1 is a schematic back view of the experimental apparatus when testing German cockroaches, and FIG. 2 is a schematic side view when testing American cockroaches. 1. Plastic vat 2. Filter paper added with hawthorn extract 3. Control filter paper Figure 1

Claims (1)

[Claims] 1. A cockroach attractant characterized by containing an extract of a plant of the Rosaceae genus Crathorn as an active ingredient.