JPH05103571A - Device for attracting and catching hematophagous insect - Google Patents

Abstract

PURPOSE:To provide the subject device comprising a specific constitution attracting hematophagous insects such as mosquitoes with the artificial buzzes of the hematophagous insects and with an attraction-accelerating agent, and capable of safely and effectively catching or killing the hematophagous insects or insect pests without requiring small animals or men. CONSTITUTION:An evaporation dish 3 receiving an attraction-accelerating agent such as a diluted solution of a ketonic acid is disposed at the lower part of a cage 1, and a sound generator 4 emitting sound waves similar to the buzzes of hematophagous insects is further disposed at the upper part of the cage 1. The cage 1 is received in a porous packaging bag 5 whose outer surface is coated with an adhesive. Thereby, in thus constituted device, a hematophagous insect such as mosquito can be attracted by the actions of the artificial buzz and the attraction-accelerating agent and subsequently caught by the adhesion of the adhesive.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a device for attracting and catching blood-sucking insects which is useful for public health, stabilization of the public life, etc. in places where infectious diseases mediated by blood-sucking insects such as mosquitoes are prevalent.

[0002]

Conventionally, insecticides have been used to control pests such as blood-sucking insects, but insecticides destroy the environmental ecosystem and develop resistance to target pests, making it difficult to achieve the purpose. There is a problem that it ends up.

[0003] As a countermeasure against this, conventionally, one that stimulates physiological instinct such as odor, color, sound, and light to collect pests and kill them,
For example, an insect that attracts and kills insects with a sound having a frequency of 450 to 650 Hz preferred by mosquitoes (JP-A-58-5131),
Those that generate carbon dioxide to attract mosquitoes to kill insects (Japanese Patent Laid-Open No. 61-135524), and those that attract and capture the odors of body fluids of small animals such as hamsters (Japanese Laid-Open Patent Publication No.
3-207339).

[0004]

However, although the above-mentioned method has a certain degree of attractive effect to Culex pipiens, etc., which is relatively harmless, it is not always sufficient, and almost no effect is obtained to other species. ..

Further, although the above method is effective when mosquitoes are in close proximity, it cannot attract mosquitoes over a wide area.

Further, although the above method is effective for attracting females, it is not effective for males who do not exhibit blood-sucking behavior, and like the above method, it is not possible to attract mosquitoes over a wide area. No, and the first small animal is difficult to obtain in some countries, and if it is obtained and used, it may scream, and it may be pitiful and cruel to animals.

Further, it is necessary to collect all kinds of mosquitoes for epidemiological investigations against diseases such as malaria filaria disease, Japanese encephalitis and dengue fever transmitted by mosquitoes. However, human decoy blood-sucking by a health worker who has been instructed by the World Health Organization has a risk of direct infection from a vector mosquito and is not humanitarian.

However, in the above-mentioned conventional method for collecting mosquitoes, insects other than mosquitoes are also mixed and collected, and since the fan etc. is used, the insect body is broken and the species can be identified. Since it is difficult or impossible and it is not always possible to attract the target species, it has been desired to develop a highly efficient trapping device for blood-sucking insects such as mosquitoes. In particular, it has been requested for outdoor leisure such as outdoor sports and outdoor restaurants, outdoor work such as agricultural work, and outdoor meetings.

The present invention has been made in consideration of the above circumstances, and can be applied to blood-sucking insects such as mosquitoes of all species and other harmful insects, and it is safe and can be effectively caught without requiring small animals or human decoys. An object of the present invention is to provide a device for attracting and attracting blood-sucking insects, which can collect or kill insects and can be particularly useful for public health, civilian stability and the like in developing countries.

[0010]

The above-mentioned object of the present invention is to construct a device for attracting and trapping a blood-sucking insect with a sound wave similar to a wing sound of a blood-sucking insect. While placing an evaporation dish containing an attractant such as a diluting solution, the cage is placed in a perforated bag by placing a sounding body that emits a sound wave similar to the wing sound above the cage,
This can be achieved by applying an adhesive to the outer surface of this perforated bag.

The evaporating dish may be heated by a heat source such as a bag containing iron powder for heat generated by oxidation.

[0012]

The present invention produces a sound suspicious of a wing sound produced by a mating partner of a blood-sucking insect such as a mosquito, and promotes an attacking group flight or mating with a chemical attraction promoter such as a keto acid-based carbon compound solution. be able to.

That is, although the above-mentioned pseudo-wing sounds vary depending on the species, for example, in the case of mosquitoes, the frequency range of 200 to 1500 Hz, the intermittent individual sounds have rise and fall times of, for example, 1 to 3 seconds, and pause times of 2 to 5 seconds. It is preferable that the oscillation time with a constant intensity is 9 to 25 seconds.

Combined with the generation of such a pseudo-wing sound, carbon dioxide gas is emitted to cause stimulation to fly, and an animal odor is emitted with an attracting promoter for mosquitoes such as a solution of a keto acid carbonate compound. Thereby, a large amount of blood-sucking insects can be fixed and captured on the adhesive by synergistically promoting blood-sucking behavior.

As described above, the present invention uses a stimulating substance such as a pseudo wing sound and a chemically odor, that is, a mosquito attraction promoter, to cause a physiological reaction of a mosquito and utilize the stimulator. It is possible to control the transmission of infectious diseases such as malaria by attracting and capturing a large amount of blood-sucking insects such as the above and killing them.

[0016]

EXAMPLES Examples will be described with reference to the drawings. First, the basic structure of the present invention is as follows:
In constructing a device that attracts and captures blood-sucking insects with sound waves similar to the wings of a blood-sucking insect, chemical attraction such as a diluting solution of a keto acid-based carbon compound is made at the bottom of the cage 1 knitted with stainless steel wire etc. Place the evaporation dish 3 containing the accelerator 2 and place the sounding body 4 such as a speaker that emits a sound wave similar to the wing sound above the cage 1 and place the cage 1 in a plastic bag with many small holes. The perforated bag 5 is stored in a perforated bag 5 with a knot 5b, and the outer surface of the perforated bag 5 is coated with an adhesive such as Trimochi spray. As shown in 3, use the rope 7a, stay 8, etc. by suspending it in the air 1m above the ground.

The evaporating dish 3 is heated by a heat source 6 such as a bag of iron powder for heat generation due to oxidation caused by the slow oxidation of iron powder as shown in FIG. 1 to positively evaporate the chemical attraction promoter 2. Good.

A specific example will be described in more detail below.
The cage 1 is made of stainless steel and has a rectangular parallelepiped shape about the size of a mandarin orange box as shown in FIG. 1. For example, as shown in FIG. The evaporation tray 3 and the sounding body 4 can be stored.

Examples of the chemical attracting promoter 2 for diluting a keto acid-based carbon compound include 2-keto butyric acid (keto oxalic acid) and glucuronic acid, such as water or ethyl alcohol. A solution diluted with the compound at a concentration of 0.001 PPM to 200 PPM is used.
The details will be described later.

As shown in FIG. 1, the evaporating tray 3 is a plastic shallow tray having a diameter of 50 mm and a depth of 20 mm, and the inner peripheral surface and the bottom surface of the evaporating tray 3 are in contact with the outer surface of the filter paper tube 3a to stand upright. It was used.

As the sounding body 4, a permanent dynamic speaker having a diameter of 3 inches and an impedance of 8 ohms was used, and its input signal was obtained from the following device.

In FIG. 4, a pseudo wing sound transmitter A, which is operated by a power source B such as a storage battery or a solar battery, transmits a pseudo wing sound signal. As will be described later, the transmitter A stores a wing sound generated by, for example, a mosquito in a well-known memory IC in advance, and intermittently transmits a signal of 200 to 1500 Hz modulated by this stored waveform.

The transmitted signal is transmitted through the code C to the sounding bodies 4 arranged in the plurality of cages 1 of the capturing device, and pseudo wing sounds are intermittently generated from the sounding body 4 and propagated in the air over a wide range of the surroundings. I am doing it.

For example, if the pseudo-wing sound is male, females in the sound propagation region are sexually stimulated and gather. When it comes close to the capture device, it is further physiologically stimulated by the carbon dioxide (CO2) that descends due to the sublimation of dry ice D as shown in FIG. The animal odor from the chemical attraction promoter 2 promotes blood-sucking behavior and collects, and the adhesive applied to the perforated bag 5 allows catching mosquitoes that fly together.

Next, the details of an example of the transmitter A will be described with reference to FIGS. FIG. 5 is a diagram showing a configuration of a pseudo wing sound generating device, FIGS. 6 and 7 are diagrams showing a wing sound waveform, and FIG. 8 is a diagram showing a waveform of an intermittent sound.

In FIG. 5, reference numeral 10 designates a variable frequency oscillator, 11 a modulator, 12 a wing sound wave storage memory, 13 a volume controller, 14 a control signal generator, and 4 a sounding body. ..

The variable frequency oscillator 10 is, for example, 200 to 15
A signal having a desired frequency can be output in the range of 00 Hz.

The modulator 11 modulates the output signal of the variable frequency oscillator 10 with the waveform signal from the memory 12 in which the wing sound waveform of a mosquito or the like is stored to generate a pseudo wing sound signal of mosquito.

The wing sound waveform is one in which the oscillating waveform of a wing sound as shown in FIGS. 6 and 7, for example, is stored. The one shown in FIG. 6 is for a female mosquito having a low frequency, and the one shown in FIG. 7 is for a frequency. Are high male mosquitoes.

This wing sound waveform differs depending on the type of mosquito and the type of pests such as black flies, and is stored for each species.

Therefore, the wing sound waveform is selected from the storage memory 12 according to what kind of mosquitoes and pests are to be collected, and the signal from the variable frequency oscillator 10 is thereby modulated.

The pseudo wing sound signal thus obtained is converted into an intermittent signal via the volume adjuster 13 by the control signal generator 14 described below to generate sound from the sounding body 4 and propagate it to the surroundings.

As shown in FIG. 8, for example, the control signal generator 14 has a rising time T1 and a time T2 at which the intensity is substantially constant.
, A falling time T3 and a resting time T4, a trapezoidal signal is repeatedly and intermittently generated. In response to this signal, the volume controller 13 gradually becomes stronger and reaches a certain strength, and then gradually weakens. And generate an acoustic signal that rests.

The above times T1, T2, T3 and T4 are variable and can be arbitrarily selected, and may be set appropriately according to the target pest.

When the blood-sucking insect is a mosquito, it depends on the species. For example, T1 and T3 are about 1 to 3 seconds, T2 is 9 to 25 seconds,
If T4 is set to 2 to 5 seconds, the number of captures can be increased.

This sound signal causes the sounding body 4 to gradually become stronger and reach a certain strength, and after a predetermined time, gradually become weaker and pause to generate a pseudo-wing sound intermittently.

It should be noted that the number of captures during the disease is small by simply continuously generating a signal of a predetermined frequency, and a large number of captures can be obtained by making a intermittent sound with a predetermined rest time.

Further, a larger number of catches can be obtained for the intermittent sound as well as for the sound that rises and falls gently as compared with the sound that rises and falls sharply.

As described above, the frequency of the pseudo-wing sound is 450 to 650 Hz for the Culex pipiens and 55 for the Anopheles mosquito.
Depending on the species, such as 0 to 770 Hz, and depending on the region and group, as shown in FIG. 7, male mosquitoes are relatively high-pitched, female mosquitoes are relatively low-pitched,
According to the experiment, a large number of female mosquitoes can be collected and collected by generating a pseudo-wing sound of a male mosquito of about 1200 Hz, and a male mosquito can be collected by generating a pseudo-wing sound of a female mosquito of about 350 Hz. However, it is preferable that female mosquitoes collect the female mosquitoes by generating a pseudo-wing sound of a male mosquito having a high frequency because it is the female mosquitoes that perform blood-sucking behavior and mediate pathogenic bacteria.

FIG. 9 is a view showing another embodiment of the pseudo wing sound generator used in the present invention, and the same reference numerals as those in FIG. 5 indicate the same contents. 20 is an arithmetic and control unit (CPU), 21 is a memory, and 22 is an amplifier.

In this embodiment, the pseudo wing sound waveform as shown in FIG. 6 and FIG. 7 is stored in the memory 21, and the waveform signal is read out by the CPU 20 at a predetermined timing to synthesize the waveform so that the pseudo wing sound is generated. Of the sound signal is amplified by an amplifier 22, and a pseudo wing sound is generated from a sounding body 4 via a volume controller 13 and propagated to the surroundings.

It should be noted that the above-mentioned respective times T1, T2, T3 of the intermittent sound
, T4 can be changed by the CPU 20.

Although not shown, it is also possible to simply record a mosquito wing sound on a recording tape and reproduce it to propagate it in the air from a sounding body such as a speaker.

The cage 1 containing the sounding body 4 and the evaporating dish 3 is placed in a perforated bag 5 such as a vinyl chloride bag having many small holes 5a as shown in FIG. Spray the adhesive on and stick it together with dry ice D as shown in Fig. 3.
Suspend to 8 and use.

As described above, one mosquito trapping machine is connected to each cord with a cord C of 25 to 50 m depending on the density of blood-sucking insects in the area, if necessary. However, the length of one cord C at the location of the transmitter is about 2 m. Dry ice D is 3
The size is adjusted so that 250 g sublimes in time.

Using such a trapping machine, a frequency of 350 Hz
Intermittent sounds a, 550Hz, 800Hz, 1000Hz winged squid wing continuously, a sudden rise, a sudden fall
It is a gentle ascent / descent for 2 seconds and the outgoing time is 20 seconds.
When the intermittent sound b was generated and captured with a pause time of 3 seconds, more intermittent sound b could be captured at each frequency.

Next, the results of capture experiments in Southeast Asia and the like using the ones having a rise and fall of an intermittent sound of about 2 seconds, a constant intensity time of 15 to 20 seconds and a rest time of about 3 seconds are shown below. ..

[0048]Specific example-1  Mosquitoes in the source of various vector mosquitoes, mainly mosquitoes
Capture (1) 199 in paddy fields in Sai Noi village, Nonthaburi Province, Thailand
From June 24 to July 2, 1
Table 1 shows the results of an experimental investigation of the responsiveness of attracting elephants.
It was

However, as a test condition, a chemical attraction promoter is used.
2 is water and is diluted with water to a concentration of 50PPM. The temperature is 40 ° C to 55 ° C in the evaporating dish 3 of the above specifications, and the pseudo wing sound generated from the sounding body 4 after being left in the cage 1 for 3 hours is The b waveform at 350 Hz. Outside temperature 30
± 4 ° C relative humidity 70-80%. The unit of the numbers in Table 1 is the number of catches (animals).

In the vertical column of the attracting means, (A) is one hamster, (S) is the pseudo wing sound, (D) is dry ice, (O) is a diluted aqueous solution of octyl alcohol, and (K).
b) shows the dilute aqueous solution of 2-ketobutyric acid and is abbreviated.

[0051]

[Table 1] Specific example-2  Next, Putoi, Sai Yok Noi Village, Kanchanaburi Province, Kingdom of Thailand
Experimenting with attractive response to three types of "mosquitoes" in a village stream
The results obtained are shown in Table 2.

The experimental conditions and the abbreviations are the same as in Table 1. However, 12 hours installation result.

[0053]

[Table 2] Specific example-3  Also, as in Tables 1 and 2, there are 3 types of
Organic compound solution
Table 3 shows the results of investigating the attractive response time of
You

However, the unit is% (examine how many animals among 100 animals are collected)

[0055]

[Table 3] Concrete example-4  Next, we will deal with 6 kinds of organic compounds
Table 4 shows the results of the indoor experiment on the attraction response.

However, the response to 1 ml of an aqueous solution having a co-concentration of 50 PPM for each organic compound was examined.

The pseudo wing sound and dry ice are not used, and the average value (%) of 10 times of experiments of how many out of 100 "Aedes aegypti" gathered is shown.

[0058]

[Table 4] Specific Example-5  Further, an aqueous solution of 5 kinds of organic compounds among the 6 kinds
Attracting "Aedes" per hour for concentration (PPM)
The results of the responsiveness experiment are shown in Table 5.

The experimental conditions are the same as in Table 4.

[0060]

[Table 5] Specific Example-6  The experimental conditions are the same as in Table 5.

[0061]

[Table 6]

[0062]

INDUSTRIAL APPLICABILITY As described above, according to the present invention, a quasi-wing sound is physically generated, and chemically, a chemical attraction promoter 2 such as a carbon compound solution is used to cause a physiological reaction in mosquitoes. By using this, it is possible to capture a large number of blood-sucking insects such as mosquitoes and kill them to prevent the spread of diseases such as malaria without abusing human decoys and small animals. There is.

Further, the device of the present invention itself can be easily implemented by the entry of the small electric equipment and physics and chemistry equipment industries, and from the aspect of disease transmission to humans and animals, international cooperation, health and hygiene at the domestic, regional or production enterprise level, and production. It also has a second effect that it can be useful for eliminating the adverse effect on the productivity of employees and for controlling loss related to damage due to the inclusion of harmful insects in the quality control of the product at the manufacturing site.

Furthermore, in cities, sewers, underground buildings,
Hygiene pests in underground shopping malls, subways, manholes, etc., especially for the control of butterfly flies, midges, gnats, etc. in chica mosquito, chironomid, mosquito and unpleasant pests, and also for pets such as dogs and livestock such as cattle, horses, sheep and goats It has become possible without the use of small animals or pesticides to control blood-sucking insects of each disease vector.

In addition, due to the influence of agricultural development in developing countries, it is possible to control a large outbreak of Anopheles mosquitoes and mosquitoes in Africa and the like, by means of vectors such as malaria, filariasis, encephalitis, and other mosquitoes, abu-byu and tsutsue flies. With the aid of Japan, infectious diseases can overcome the deadlock of these aids and control.

[Brief description of drawings]

FIG. 1 is a vertical sectional elevation view showing an example of the device of the present invention.

FIG. 2 is a main-part elevation view showing an example of an open state of the device on the drawing.

FIG. 3 is an explanatory diagram showing a usage example of the one shown in FIG.

FIG. 4 is a schematic view showing an example of arranging a plurality of those shown in FIG.

FIG. 5 is a system circuit diagram showing an example of a pseudo wing generator.

FIG. 6 is a waveform diagram showing an example of a wing sound waveform (female mosquito).

FIG. 7 is a waveform diagram showing an example of a wing sound waveform (male mosquito).

FIG. 8 is an envelope diagram that gives temporal changes to wings.

FIG. 9 is a system circuit diagram showing another embodiment of that shown in FIG.

[Explanation of symbols]

 1 Cage 2 Chemical attraction promoter 3 Evaporating dish 4 Sounder 5 Perforated bag 6 Heat source

Claims (2)

[Claims] 1. An apparatus for attracting and trapping a blood-sucking insect with a sound wave similar to a wing sound of a blood-sucking insect, wherein an evaporation dish (3) containing an attracting promoter (2) such as a dilute solution of a keto acid-based carbon compound at the bottom of a cage (1). The cage 1 is housed in a perforated bag 5 by placing a sounding body 4 that emits a sound wave similar to the wing sound above the cage 1, and the adhesive is attached to the outer surface of the perforated bag 5. A device for attracting and capturing blood-sucking insects. 2. The evaporating dish 3 is a heat source such as an oxidative heating iron powder bag.
The attracting and trapping device for blood-sucking insects according to claim 1, which is heated at 6.