JP5931364B2 - Red bearded winged turtle capture device - Google Patents

Description

The present invention relates to an apparatus for capturing Trigonotylus caestierium, which is an important pest of rice.

  Red beetle is a pest of paddy rice that occurs mainly in the Hokuriku region from the Sea of Japan side of the Tohoku region. Overwintering generations inhabit paddy rice paddies and surrounding grasslands, but when rice heads, they move to paddy fields and suck brown rice with a mouth needle. The part sucked by this species turns black. This is called spotted rice. If two spots of spotted rice are mixed in 1000 grains of rice, it becomes second-class rice and its commercial value drops. Therefore, in areas where red bearded moss turtles are distributed, excessive insecticides tend to be sprayed to prevent spotted rice, and there are concerns about adverse environmental effects.

  In order to avoid the use of unnecessary insecticides and to disperse insecticides as efficiently as possible, it is necessary to have a so-called forecast of occurrence that knows in advance when the red-bellied flies are invading the paddy fields and how many insects have invaded.

  This kind of sex pheromone is identified as a mixture of n-hexyl n-hexanoate, n-hexanoic acid (E) -2-hexenyl and n-octyl n-butyrate having a mass ratio of 1000: 400: 30 (non-patent literature). 1) It has been experimentally shown that occurrence prediction is possible from the tendency of wild insects collected regularly using these compounds (Non-patent Document 2, Patent Document 1).

Two types of capture devices are used for these occurrence predictions.
For example, as shown in FIG. 5, for example, a sex pheromone 25 placed on the talai 23 using a wire 22 connected to the talai 23 by adding water 26 with an inverse soap to the talai 23 having a diameter of 45 cm. It is a “basin-type” capture device that captures insects attracted by water.
The other is, as shown in FIG. 6, for example, a “exposed adhesive type” capture in which two of a 24 cm × 30 cm adhesive plate 36 having sex pheromones 35 are placed with their non-adhesive surfaces back to back and standing on a support 33. Device.
Both capture devices efficiently capture red-bellied midge turtles attracted by sex pheromones. However, the “basin type” is hard to manage such as regular water exchange and lacks practicality. In addition to the use of two adhesive plates, which are normally only used for the “bare adhesive type”, the adhesive surface is exposed and placed on the field, so large non-target insects such as dragonflies and swallowtails adhere to the adhesive plate. The number of exchanges increases and the cost becomes a problem.

JP 2005-47889 A

Kakizaki M. et al. and H. Sugie, (2001) J. MoI. Chem. Ecol. 27: 2447-2458. Ishimoto Manjuhiro et al. (2006) Japanese Society of Applied Entomology 50 (4): 311-318.

At present, the “basin type” (FIG. 5) and the “bare adhesion type” (FIG. 6) are unavoidably used, but improvement has been desired from the agricultural field where this kind of occurrence prediction is practiced.
An object of the present invention is to provide a capture device that efficiently and economically captures the red-bellied mosquito attracted by sex pheromones and a method for predicting the occurrence using the same.

  First, the present inventor studied the capture of red bearded winged turtle using the roof-type adhesive trapping device shown in FIG. This trapping device covers the adhesive plate 16 placed on the floor member 13 with the roof member 11, and captures insects attracted by the sex pheromone 15 placed on the adhesive plate 16, thereby reducing the area of the entrance. This prevents the entry of unintended insects that are not attracted by the pheromone and prevents the adhesive plate 16 from becoming dirty. The present inventor considered that such a capturing device would enable an investigation with a single adhesive plate, and would save observation time in addition to economic merit. However, in practice, the number of captures was extremely small, and the prospect of occurrence prediction could not be achieved (Reference Example 1).

The inventors of the present invention have further advanced the research on the device for capturing red-bellied flies, and have reached the present invention.
The present invention provides a floor member having a capture part for capturing red bearded mosquito turtle, a roof member covering the floor member, an opening having a height of at least 5 cm provided between the floor member and the roof member. And a spacer for forming an opening that allows entry of the red-bellied spider turtle from at least 180 degrees of rotation around 360 degrees when the height direction is a rotation axis, and a sex pheromone There is provided a capture device for red beetle mosquito turtles having a carrier holding portion on the floor member, the roof member or the spacer, which can hold a carrier that volatilizes volatile substances above the capture portion.
Moreover, this invention provides the generation | occurrence | production prediction method of the red-bellied winged midge turtle using this capture device at least including the step which captures a red-bellied winged mid-sided turtle.
As one specific example of the capture device of the present invention, a column is provided between the roof member and the floor member of the adhesive-type capture device with a roof shown in FIG. 1, and the height of the column is 5 cm or more. In addition, while preventing the invasion of large-sized insects that are not intended, the red-faced butterfly turtle attracted by sex pheromones is captured even in the adhesive type with a roof.

  By using the capture device provided by the present invention, it becomes possible to economically and efficiently capture the red-bellied mosquito attracted by sex pheromones, and useless insecticides by knowing the state of occurrence of the pests So-called outbreak forecasting that avoids the use of water is achieved, which can contribute to the formation of environmentally friendly agriculture.

The apparatus for capturing red bearded moss turtle used in Reference Example 1 is shown. The front perspective view of one Embodiment of the capture device of the red bearded winged midsumika turtle of this invention is shown. FIG. 3 is a side perspective view of the capture device of FIG. 2. Figure 2 shows an elongated piece that can be folded to form a beam and spacer. A conventional basin-type capture device is shown. A conventional bare adhesive mold is shown.

  The overall shape of the capture device for the red beetle mosquito turtle is provided with a floor member having a capture part, a roof member that covers the floor member, and a spacer that forms an opening provided between the floor member and the roof member. It is not limited, it is a columnar shape, a triangular columnar shape, a quadrangular columnar shape with flattened roof members and floor members, or a combination of two flat plates in an inverted V shape by replacing the roof member with one flat plate. Is mentioned. In view of the fact that rain does not collect on the roof member, it is preferable to use a combination of two flat plates in an inverted V shape as the roof member. From the viewpoint of ease of installation of the carrier that volatilizes the sex pheromone, this inverse V More preferably, a beam is provided between two flat plates combined in a letter.

The carrier holding part that can hold the carrier that volatilizes the sex pheromone above the capturing part can be provided on the floor member, the roof member, or the spacer. For example, a wire connected to a floor member, a roof member, or a spacer and extending above the capture unit can be used, and the carrier can be held at the tip thereof. In addition, when a roof member is provided with a beam between two flat plates combined in an inverted V shape, a hole for attaching a carrier that volatilizes sex pheromone may be provided in the beam to form a carrier holding portion. it can. It has been confirmed that even if a carrier holding part is provided on the beam, the number of captured red-spotted beetle turtles is not reduced, and since the exchange of the carrier becomes easy, the carrier that releases the sex pheromone is periodically exchanged. Workability can be improved.
As the carrier for volatilizing the sex pheromone, a known carrier can be used, and examples thereof include a rubber cap impregnated with the sex pheromone (rubber is isopropylene rubber, for example), a polyethylene cap, a filter paper, and a cotton rope.
The sex pheromone may be a natural pheromone of Akahigehosomidorisikameka, but a synthetic pheromone is preferred from the standpoint of availability and cost. The synthetic pheromone is composed of n-hexyl n-hexanoate, n-hexanoic acid (E) -2-hexenyl, and n-octyl n-butyrate in a mass ratio of 1000: (100 to 1000): (3 to 300 ) Is preferable, and an antioxidant or the like may be contained.

The floor member has a capturing unit for capturing red bearded mosquito turtle.
The trapping part may be one in which reverse soap is put into the talai, but since water exchange becomes heavy labor, preferably, it is an adhesive plate having an adhesive substance on one side, and the adhesive substance faces the roof member Thus, it is installed in the surface of a floor member so that attachment or detachment is possible. The size of the pressure-sensitive adhesive plate is preferably 24 cm × 30 cm, and is preferably the same size as the pressure-sensitive adhesive sheet used in a conventional bare pressure-sensitive adhesive trapping device because the pressure-sensitive adhesive sheet of the bare pressure-sensitive adhesive trapping device can be used. In order to make the pressure-sensitive adhesive sheet detachable, it is preferable to arrange a fastener for the pressure-sensitive adhesive plate on the floor member. It is also possible to make a cut in the floor member and hold the corner of the adhesive sheet by the cut.
The magnitude | size of a floor member should just be a magnitude | size which can hold | maintain a capture part.

The spacer is provided between the floor member and the roof member, and is an opening having a height of at least 5 cm. The spacer is at least 180 degrees out of 360 degrees around the rotation direction when the height direction is the axis of rotation. An opening for allowing the penetration of the turtle is formed.
The height of the opening is 5 cm or more, preferably 10 cm to 15 cm. Even if the height of the opening is higher than 15 cm, the number of captured red beetle mosquito turtles does not increase significantly, and there is a risk that large insects may adhere to the adhesive plate.
The spacer is preferably provided at a position along the inside or outside of the floor member or in the vicinity thereof so as not to disturb the installation of the capture unit.
The spacer only needs to be able to maintain the roof member above the floor member, and is, for example, an elongated piece, a bar, a pipe, a wire, a string, or a plate. The wire may be extended in the vertical direction to connect the roof member and the floor member, but may be connected in a mesh shape. Even a spacer that cannot hold the roof member alone can be used because the roof member can be maintained above the floor member by, for example, hanging or hanging the roof member on a support assembled in the shape of a steel bar. Further, when a plate is used as a spacer and the plate is arranged on the inner periphery or outer periphery of the floor member and used as a wall between the floor member and the roof member, the rotation circumference 360 when the height direction is the rotation axis. In order to allow intrusion of red bearded winged turtle from at least 180 degrees of the degree, for example, a plurality of openings having a height of at least 5 cm can be provided on the wall. Further, at least two plates having a height of 5 cm may be arranged in parallel with each other with the capture portion interposed therebetween so as to allow the invasion of the red bearded mosquito turtle from the direction in which the plate is not arranged. If a long, narrow piece, rod, pipe, wire, or string is used as a spacer, the number of adhesive plates can be reduced by adjusting the number of spacers to prevent the entry of large non-target insects such as dragonflies and swallowtails. Is preferable.

In addition, when a roof member is provided with a beam between two flat plates combined in an inverted V shape, for example, if a long and slender piece is used as a spacer, it can be bent to form the beam and the spacer. Can be In the case where the beam and the spacer are integrated, it is preferable because the structure is superior in strength compared to the case in which these are separate parts. In addition, the manufacturing cost can be suppressed by reducing the number of parts.
In addition, it is preferable that at least one of the elongated pieces is provided with a hole for attaching the carrier to a portion to be a beam.

  The material of the roof members, spacers, beams, and floor members should be weatherproof and have a strength that is not destroyed by the wind, and any of plastic, wood, metal, and paper may be used. Is optimal.

An example of the device for capturing red bearded mosquito turtles of the present invention will be described with reference to the drawings.
The capture device shown in the front perspective view of FIG. 2 and the side perspective view of FIG. 3 includes a floor member 3 having an adhesive plate 6 for capturing red beetle moss turtle and a carrier that covers the floor member 3 and volatilizes the sex pheromone. An opening having a height of at least 5 cm, provided between the roof member 1 having a beam 2a having a hole 4 for holding 5 and the roof member 1 at a position on the inner periphery of the floor member 3, And a spacer 2b that forms an opening that allows entry of the red-haired winged midge turtle from about 360 degrees around the rotation when the height direction is the rotation axis. The floor member 3 has a cut 3 a for fixing the adhesive plate 6.

As shown in FIG. 4, the beam 2a and the spacer 2b are formed by bending the elongated piece 2 together with the floor member fixing portion 2c and the adhesive plate holding portion 2d, and are integrated. The floor member and the spacer, and the roof member and the spacer are fixed with screws 8 through the screw holes 7, respectively. The carrier 5 for releasing the synthetic pheromone is attached to the central hole 4 of the beam 2a. The adhesive plate holding part 2d is used for fixing the adhesive plate 6.
The height between the floor member and the roof member (the length of the spacer 2b) is 5 cm or more.
In the capture device of FIG. 1, the space on the adhesive plate is narrow, and a carrier that releases a synthetic pheromone is placed on the adhesive plate, and the exchange of the carrier is troublesome. However, in the capturing device of the present invention, the exchange of the carrier is easy, and when this is installed in the hole 4 of the beam 2a, the exchange of the carrier is particularly easy. By integrating the spacer 2b for connecting the roof member and the floor member and the beam 2a (in FIG. 2, together with the fixing member 2c to the floor member and the adhesive plate holding portion 2d), the capture device is inexpensive and excellent in strength.

The device for capturing red bearded mosquito turtles configured as described above has a plant height of about the height of the plant body in paddy fields and weedlands where the stink bugs live during the period from April to October, which is the staging period of the stink bugs. Install horizontally at height. Then, by counting the number of insects attached to the adhesive plate at intervals of about 5 to 10 days, it becomes possible to know the transition of the number of occurrences in the corresponding year. By accumulating such data for several years, it becomes possible to detect an abnormal occurrence year at an early stage.
In addition to the above-mentioned long-term outbreak prediction, in the case of short-term outbreak prediction that determines whether the red-bellied flies are entering the paddy field and determines whether or not control is necessary, This can be achieved by measuring the number of insects attached to the adhesive plate at intervals of 2 days.

Hereinafter, specific embodiments of the present invention will be described with reference to examples and comparative examples, but the present invention is not limited to the examples.
Example 1, Reference Example 1
In the device for capturing red bearded mosquito turtles shown in FIG. 2, the height of the pillar connecting the floor member and the roof member is 15 cm, and isopropylene rubber impregnated with 0.01 mg of the synthetic pheromone of the insect is used as a sustained release carrier. Attached to the beam of the capture device. As a synthetic pheromone, a mixture of n-hexyl n-hexyl, n-hexanoic acid (E) -2-hexenyl, and n-octyl n-butyrate having a mass ratio of 1000: 400: 30 was used. This capture device was installed in the weedy (4 places) of the paddy field before tillage. Then, the number of insects captured by these capturing devices was continuously counted for 5 days (Example 1). In addition, in the same weed land to which the capture device is attached, an adhesive type capture device with a roof as shown in FIG. 1 equipped with a carrier for releasing the synthetic pheromone is attached at a point 10 m away from the capture device. The number of captures during the same period was measured (Reference Example 1). The results are shown in Table 1.

As shown in Table 1, an average of 16.3 Akagegehosomidorikasikameka was captured by the capture device of Example 1, but the capture device of Reference Example 1 is equipped with the same type of sex pheromone release carrier. Nevertheless, the average number of captures was only 1.0.
The capture device of Reference Example 1 having no spacer is general and widely used as a trapping device for moss, but a space of 5 cm or more is required for capturing red beetle mosquito turtles. This suggests the possibility that the red bearded mosquito turtle is derived from the nature of flying below the plume, and such a phenomenon is not known in other insects.
During the survey period, no large insects were captured on any of the capture devices. Therefore, it can be seen that the capture device of the present application does not capture large insects that hinder the investigation, and captures the target red-bellied spider turtle.

Examples 2-4
In the red-bellied mosquito trapping device shown in FIG. 2, three types of traps with the height of the pillar connecting the floor member and the roof being 5 cm (Example 2), 10 cm (Example 3), and 15 cm (Example 4) To each apparatus, isopropylene rubber impregnated with 0.01 mg of the synthetic pheromone of the insect was attached as a sustained release carrier to the beam of the capture apparatus, and these were attached to a 6-block paddy field. And the number of insects captured by these capture devices was continuously counted for 5 days. The results are shown in Table 2.

  As shown in Table 2, in Example 2 with a column height of 5 cm, the average number of catches was 5.3, and in Example 3 with a column height of 10 cm, the average number of catches was 6.8 and the column height was 15 cm. In Example 4, the average number of captures was 9.7, and it was found that any of the capture devices captures the red beetle moss turtle without capturing large insects. It can also be seen that the higher the column height, the greater the number of captures.

DESCRIPTION OF SYMBOLS 1 Roof member 2a Beam 2b Spacer 2c Fixing part 2d to floor member Adhesive plate holding part 3 Floor member 3a Cut 4 Carrier holding hole 5 Carrier 6, 36 Adhesive plate 7 Screw hole 8 Screw 22 Wire 23 Tarai 25, 35 Pheromone 26 Water 33 Prop

Claims (6)

A floor member having a capturing part for capturing red bearded winged turtle,
A roof member covering the floor member;
An opening portion provided between the floor member and the roof member, and having an opening of at least 5 cm and having a rotation axis in the height direction of at least 180 degrees of rotation around 360 degrees. And a spacer for forming an opening that allows intrusion of miscellaneous turtles. The floor member, the roof member, or the spacer has a carrier holding part capable of holding a carrier for volatilizing the sex pheromone above the capture part. Hosomidorikamikame capture device.   The said roof member is provided with a beam between two flat plates combined in an inverted V shape, and the carrier holding portion is a hole provided in the beam for attaching the carrier. Capture device for Japanese red beetle.   The device for capturing red beetle mosquito turtles according to claim 2, wherein the beam and the spacer are integrated. The said spacer is a stick | rod , a pipe, a wire, a string, or a board, The capture apparatus of the red-bellied winged midge turtle as described in any one of Claims 1-3.   The said capture | acquisition part is an adhesive sheet which has an adhesive substance on one side, and is detachably installed in the surface of the said floor member so that this adhesive substance may oppose the said roof member. Capture device for Japanese red beetle.   A method for predicting the occurrence of red beetle foliage turtle using at least the step of capturing the red beetle foliage using the capture device according to claim 1.

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