Insect mating promotion device and insect mating promotion method

Abstract

To provide an insect mating promotion device capable of improving reproductive efficiency by promoting surely mating of two-winged insects, even when using only artificial light.SOLUTION: An insect mating promotion device 10 for promoting mating of two-winged insects stored in a cage 1, includes an irradiation light source 2 for irradiating light containing visible light into the cage 1, and a reflection member 3 for reflecting, towards the inside of cage 1, light having a wavelength of green to red irradiated from the irradiation light source 2.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to an apparatus and method for promoting mating in dipteran insects. [Background technology]

[0002] Dipteran insects, particularly black soldier flies, have the potential to avoid future protein crises, and therefore mass production technologies for them are being developed around the world. It has long been known that adult black soldier flies require light to promote mating, and that sunlight is a suitable light source. For example, Non-Patent Document 1 below shows that the use of artificial light in combination with sunlight increases the number of eggs laid and the number of fertilized eggs compared to artificial light alone. [Prior art documents] [Non-patent literature]

[0003] [Non-Patent Document 1] Small-scale rearing of the black soldier fly, Hermetia illucens (Diptera: Stratiomyidae), in the laboratory: low-cost and year-round rearing, November 2015 Applied Entomology and Zoology 51(1), DOI:10.1007 / s13355-015-0376-1 Summary of the Invention [Problem to be solved by the invention]

[0004] However, when breeding American soldier flies in an artificial environment year-round, mating promotion methods that rely on sunlight can result in large changes in egg yield due to changes in the amount of sunlight caused by seasonal and weather changes. Therefore, a mating promotion method that uses only artificial light is desired.

[0005] An object of the present invention is to provide an apparatus and method that can reliably promote mating of dipteran insects and improve reproduction efficiency even when using only artificial light. [Means for solving the problem]

[0006] A first aspect of the present invention is an insect mating promotion device for promoting mating of dipteran insects housed in a cage, comprising: an irradiation light source that irradiates light including visible light into the cage; a reflecting member that reflects light of a green to red wavelength among the light irradiated from the irradiation light source toward the inside of the cage, or a light emitting member that emits light of a green to red wavelength toward the inside of the cage; Equipped with It is characterized by the following.

[0007] A second aspect of the present invention is a method for promoting mating of dipteran insects housed in a cage, comprising: an irradiation step of irradiating the inside of the cage with light including visible light; a reflecting step of reflecting light of a green to red wavelength from the irradiated light toward the inside of the cage, or a light emitting step of emitting light of a green to red wavelength toward the inside of the cage; Contains, It is characterized by the following. [Effects of the Invention]

[0008] According to the present invention, mating of dipteran insects can be reliably promoted and the reproduction efficiency can be improved even when artificial light alone is used. [Brief explanation of the drawings]

[0009] [Figure 1] 1 is a schematic perspective view of an insect mating promotion device according to a first embodiment of the present invention. [Figure 2] FIG. 2 is an enlarged partial view of FIG. [Figure 3] 1 is a schematic perspective view of an insect mating promotion device according to a first modified example of the first embodiment. [Figure 4]10 is a schematic perspective view of an insect mating promotion device according to a second modified example of the first embodiment. [Figure 5] 10 is a schematic perspective view of an insect mating promotion device according to a third modified example of the first embodiment. [Figure 6] 10 is a schematic perspective view of an insect mating promotion device according to a fourth modified example of the first embodiment. [Figure 7] 10 is a schematic perspective view of an insect mating promotion device according to a fifth modified example of the first embodiment. [Figure 8] 10 is a schematic perspective view of an insect mating promotion device according to a sixth modified example of the first embodiment. FIG. [Figure 9] 10 is a schematic perspective view of an insect mating promotion device according to a seventh modified example of the first embodiment. [Figure 10] 10 is a schematic perspective view of an insect mating promotion device according to an eighth modified example of the first embodiment. [Figure 11] 13 is a schematic perspective view of an insect mating promotion device according to a ninth modified example of the first embodiment. [Figure 12] 1 is a schematic perspective view of an insect mating promotion device according to a second embodiment of the present invention. DETAILED DESCRIPTION OF THE INVENTION

[0010] [First embodiment] FIG. 1 is a schematic perspective view of an insect mating promotion device according to a first embodiment of the present invention. The insect mating promotion device 10 of this embodiment is a device for promoting mating of dipteran insects housed in a cage 1, and includes an irradiation light source 2 that irradiates light including visible light into the cage 1, and a reflecting member 3 that reflects red wavelength light from the light irradiated from the irradiation light source 2 toward the inside of the cage 1. Here, the red wavelength is 590 to 780 nm. The dipteran insect in this embodiment is an American soldier fly.

[0011] The cage 1 has a rectangular parallelepiped shape made up of six walls. As shown in FIG. 2, each wall is made up of a rectangular frame 11 with a thin mesh body 12 stretched across it. The periphery of the mesh body 12 is fixed to the frame 11 with fasteners such as screws or adhesive. The frame 11 is made of resin, wood, metal, or the like. The mesh plates 12 are made of natural fibers, synthetic fibers, metal fibers, or the like. The mesh plates 12 are configured to allow air and light to pass through but not allow insects to pass through.

[0012] The irradiation light source 2 is a light source that emits artificial light, and is a light source that emits light that includes visible light. The irradiation light source 2 may emit light that includes not only visible light but also ultraviolet light. Existing lighting can be used as the irradiation light source 2. The wavelength of the light emitted from the irradiation light source 2 is 300 to 780 nm if it includes ultraviolet light, and 380 to 780 nm if it includes only visible light.

[0013] The reflective member 3 is a member that exhibits red color, and specifically, is paper that exhibits red color (i.e., red paper). Note that a board (i.e., a red board) may be used instead of paper.

[0014] In this embodiment, as shown in FIG. 1 , the irradiation light source 2 faces the left wall 131 of the cage 1 and is arranged to irradiate light horizontally into the cage 1 through the left wall 131. The red paper serving as the reflective member 3 is arranged to cover the entire outer wall surface of the right wall 132 of the cage 1. Therefore, in this embodiment, the irradiation light source 2 and the reflective member 3 face each other. Note that in FIG. 1 , the reflective member 3 is shown separated from the outer wall surface of the right wall 132, but this is merely for ease of understanding; in reality, the reflective member 3 is in close contact with the outer wall surface of the right wall 132. The red paper serving as the reflective member 3 is preferably attached to the right wall 132 by fastening its peripheral edge to the frame 11.

[0015] According to the device 10 of this embodiment, light including visible light from the irradiation light source 2 is irradiated onto the black soldier flies housed in the cage 1, and the irradiated light is reflected by the reflecting member 3 toward the inside of the cage 1, so that light of a red wavelength is also irradiated. That is, according to the device 10 configured as described above, a larger amount of light of a red wavelength can be irradiated onto the black soldier flies compared to when only light is irradiated from the irradiation light source 2. As a result, mating of the black soldier flies can be promoted compared to when the reflecting member 3 is not provided, i.e., when the light irradiated from the irradiation light source 2 is not reflected.

[0016] That is, the device 10 of this embodiment implements a method for promoting insect mating, which includes an irradiation step of irradiating light containing visible light into the cage 1, and a reflection step of reflecting red wavelength light from the irradiated light toward the inside of the cage 1.

[0017] Furthermore, the device 10 of this embodiment uses only artificial light, that is, the irradiation light source 2, and therefore can stably irradiate light into the cage 1. Therefore, the device 10 of this embodiment can reliably promote mating of black soldier flies.

[0018] [Modification of the first embodiment] The device 10 of the first embodiment may optionally employ one or more of the following modified configurations, which can also achieve effects equal to or greater than those described above.

[0019] (1) As the reflective member 3, a member that reflects light of a green wavelength may be used instead of a member that reflects light of a red wavelength. Specifically, green paper or board (i.e., green paper or green board) may be used. Here, the green wavelength is 500 to 570 nm.

[0020] (2) Instead of being provided so as to cover the "entire" exterior wall surface of one wall, the reflective member 3 may be provided so as to cover only a "part" of the exterior wall surface. Here, "a part" means 25% or more but less than 100% of the exterior wall surface. Of course, 100%, i.e., the "entire" surface, is most preferable.

[0021] (3) The reflecting member 3 may be provided on a wall other than the right wall 132. That is, the positional relationship between the irradiation light source 2 and the reflecting member 3 does not have to be directly opposite to each other as shown in FIG. 1. For example, in the device 10 of FIG. 3, the reflecting member 3 is provided on the upper wall 133. Note that the reflecting member 3 may also be provided on the lower wall 134, the front wall 135, or the rear wall 136.

[0022] (4) The reflecting member 3 may be provided outside the wall, not on the outer wall surface of the wall. For example, in the device 10 of Fig. 4, the reflecting member 3 is positioned obliquely with respect to the irradiation light source 2 outside the cage 1.

[0023] (5) The irradiation light source 2 may be provided so as to irradiate the interior of the cage 1 with light from a vertical or oblique direction. For example, in the device 10 of Fig. 5, the irradiation light source 2 is provided so as to irradiate the interior of the cage 1 with light from a vertical direction. Note that although the reflective member 3 is provided on the lower wall 134 in Fig. 5, it may be provided on another wall.

[0024] (6) The reflecting members 3 may be provided on the outer wall surfaces of a plurality of walls. For example, in the device 10 of FIG.

[0025] (7) The reflective member 3 may be a combination of a member that reflects red wavelength light and a member that reflects green wavelength light. For example, if the reflective member 3 is provided on only one wall, the outer surface of the wall may be covered with red paper and green paper separately. Alternatively, if the reflective member 3 is provided on multiple walls, red paper and green paper may be used separately for each wall.

[0026] (8) The reflecting member 3 may be provided on the “inner wall surface” rather than the “outer wall surface” of the wall of the cage 1. For example, in the device 10 of FIG. 7, the reflecting member 3 is provided on the inner wall surface of the right wall 132.

[0027] (9) The reflecting member 3 may be formed by the wall of the cage 1 itself. For example, in the device 10 of Fig. 8, the right wall 132 itself forms the reflecting member 3. Specifically, the mesh body 12 of the right wall 132 is made of, for example, metal fibers coated with red paint.

[0028] (10) The reflective members 3 may be provided inside the cage 1, rather than on the outer wall surface, inner wall surface, or outside of the cage 1. For example, in the device 10 shown in FIG. 9, four cylindrical reflective members 3 are provided inside the cage 1. Note that FIG. 9 shows the reflective members 3 in a perspective view of the cage 1. The reflective members 3 are provided inside the cage 1 by being fixed to the lower wall 134, by being suspended from the upper wall 133, or by other methods. The surfaces of the cylindrical members are red or green, for example, by being painted with red or green paint or by having red or green paper or board attached to the surfaces. The number of reflective members 3 is not limited to four, as long as there is one or more. Furthermore, the reflective members 3 are not limited to cylindrical shapes, and may be any shape, such as a cube or a triangular pyramid, as long as the surfaces are red or green.

[0029] (11) The cage 1 is not limited to a rectangular parallelepiped shape and may have other shapes. For example, in the device 10 of FIG. 10, the cage 1 has a cylindrical shape. In this device 10, the reflective member 3 is provided so as to cover the entire outer wall surface of the right wall 132 of the cage 1. Note that, as shown in FIG. 11, the reflective member 3 may be provided so as to cover the outer wall surface of the cylindrical wall 101 of the cage 1. Alternatively, the reflective member 3 may be provided on the "inner wall surface" or "outside" or "inside" of the cage 1, rather than on the "outer wall surface" of the cage 1. Note that FIG. 11 shows the cage 1 in a perspective view of the reflective member 3.

[0030] (12) The irradiation light source 2 may irradiate not only artificial light but also sunlight.

[0031] [Second embodiment] 12 is a schematic perspective view of an insect mating promotion device according to a second embodiment of the present invention. The insect mating promotion device 10 of this embodiment is a device for promoting mating of dipteran insects housed in a cage 1, and is equipped with an irradiation light source 2 that irradiates the cage 1 with light including visible light, and a light-emitting member 4 that emits red wavelength light toward the inside of the cage 1. Here, the red wavelength is 590 to 780 nm. The dipteran insect in this embodiment is an American soldier fly.

[0032] The cage 1 and the irradiation light source 2 are the same as those in the first embodiment, and the modified configurations that can be adopted are also the same as those in the first embodiment.

[0033] The light emitting member 4 is a light emitting body that emits red light, specifically a red light, and more specifically a red LED.

[0034] 12, in this embodiment, the irradiation light source 2 is disposed opposite the left wall 131 of the cage 1 and is disposed so as to irradiate light horizontally into the cage 1 through the left wall 131. The light emitting member 4, a red LED, is disposed outside the cage 1 and faces the right wall 132 via a light diffusion plate 41. That is, here, the irradiation light source 2 and the light emitting member 4 are positioned directly opposite each other. The light diffusion plate 41 is not necessary, but is preferably provided.

[0035] According to the device 10 of this embodiment, light including visible light is irradiated from the irradiation light source 2 onto the black soldier flies housed in the cage 1, and red wavelength light is also irradiated from the light-emitting member 4 toward the inside of the cage 1. That is, according to the device 10 configured as described above, a larger amount of red wavelength light can be irradiated onto the black soldier flies compared to when only light is irradiated from the irradiation light source 2. As a result, mating of the black soldier flies can be promoted compared to when the light-emitting member 4 is not provided, i.e., when only light is irradiated from the irradiation light source 2.

[0036] That is, the device 10 of this embodiment implements a method for promoting insect mating, which includes an irradiation step of irradiating light containing visible light into the cage 1, and an emission step of emitting light of a red wavelength toward the inside of the cage 1.

[0037] Furthermore, the device 10 of this embodiment uses only artificial light, that is, the irradiation light source 2 and the light-emitting member 4, and therefore can stably irradiate light into the cage 1. Therefore, the device 10 of this embodiment can reliably promote mating of black soldier flies.

[0038] [Modification of the second embodiment] The device 10 of the second embodiment may optionally employ one or more of the following modified configurations, which can also achieve effects equal to or greater than those described above.

[0039] (1) As the light-emitting member 4, a member that emits light with a green wavelength may be used instead of a member that emits light with a red wavelength. Specifically, a green light, more specifically, a green LED, may be used. Here, the green wavelength is 500 to 570 nm.

[0040] (2) The positional relationship between the irradiation light source 2 and the light emitting member 4 does not have to be such that they face each other as shown in Figure 12. In other words, the light emitting member 4 may be provided so as to face the lower wall 134, the front wall 135, or the rear wall 136, instead of the right wall 132.

[0041] (3) A plurality of light emitting members 4 may be provided facing one wall.

[0042] (4) The light emitting members 4 may be provided on the "outside" of a plurality of walls, i.e., a plurality of light emitting members 4 may be provided. For example, the light emitting members 4 may be provided on the five walls 132, 133, 134, 135, and 136, facing each other.

[0043] (5) A component that emits light of a red wavelength and a component that emits light of a green wavelength may be used together as the light emitting component 4. For example, when the light emitting component 4 is provided on only one wall, a red LED and a green LED may be disposed so as to face one wall. Alternatively, when the light emitting component 4 is provided facing multiple walls, a red LED and a green LED may be used for each wall.

[0044] (6) The light emitting member 4 is not limited to being provided on the "outside" of the wall body, but may be provided on the "external wall surface," "inner wall surface," or "inside."

[0045] (7) The light-emitting member 4 may be configured by the wall of the cage 1 itself. For example, the right wall 132 itself may configure the light-emitting member 4. Specifically, the mesh body 12 of the right wall 132 is configured by an optical fiber that emits light of, for example, a red or green wavelength.

[0046] [Other embodiments] The first and second embodiments are directed to the American soldier fly, but the present invention can be similarly applied to insects other than the American soldier fly as long as they are Diptera, such as insects of the Muscidae family, Ophidiidae family, Tephritidae family, and Syrphidae family.

[0047] [Examples 1 and 2 and Comparative Examples 1 and 2] The following test method was carried out under the following conditions using the device 10 of Fig. 1. Example 1 was used as the reflective member 3 in the case where red paper was used, Example 2 in the case where green paper was used, Comparative Example 1 in the case where blue paper was used, and Comparative Example 2 in the case where black paper was used.

[0048] (conditions) ·Irradiation light source 2 Artificial solar lighting (Seric Corporation, XC-500BF) Emission wavelength range 300~780nm Photon flux density of the irradiated light Front in cage 1: 302 μmol m -2 ·s -1 · Posterior in cage 1: 212 μmol·m-2 ·s -1 Cage 1 Length x Width x Height: 30 x 30 x 30 cm

[0049] (Test Method) Cage 1 contained 100 adult American soldier flies (sex ratio unknown), and light was irradiated from light source 2. The number of matings was counted 5 minutes after irradiation. This was done twice, and the average number of matings was calculated.

[0050] (result) The results are shown in Table 1.

[0051] [Table 1]

[0052] As is clear from Table 1, Examples 1 and 2 can increase the number of matings compared to Comparative Examples 1 and 2. In Comparative Example 2, the light emitted from the irradiation light source 2 is absorbed by the black paper and is not reflected within the cage 1, so that only the light emitted from the irradiation light source 2 is irradiated onto the American soldier fly. In other words, Comparative Example 2 shows the case where only the light emitted from the irradiation light source 2 is used.

[0053] [Example 3 and Comparative Examples 3 and 4] The following test method was carried out under the following conditions using the device 10 shown in Fig. 6. Example 3 was used as the reflective member 3 when green paper was used, Comparative Example 3 was used when blue paper was used, and Comparative Example 4 was used when black paper was used.

[0054] (conditions) ·Irradiation light source 2 Artificial solar lighting (Seric Corporation, XC-100BF) Emission wavelength range 300~780nm Cage 1 Length x Width x Height: 30 x 30 x 30 cm

[0055] (Test Method) Fifty adult male and fifty adult female black soldier flies were housed in cage 1, and light was irradiated from light source 2. The number of matings was counted 15 minutes after irradiation. This was done three times, and the average number of matings was calculated.

[0056] (result) The results are shown in Table 2.

[0057] [Table 2]

[0058] As is clear from Table 2, according to Example 3, the number of matings can be increased compared to Comparative Examples 3 and 4. It can be understood that Comparative Example 4 shows the same case as Comparative Example 2. [Industrial Applicability]

[0059] The insect mating promotion device of the present invention is highly industrially useful because it can reliably promote mating of dipteran insects and improve their reproduction efficiency even when using only artificial light. [Explanation of symbols]

[0060] 1 cage 2 Irradiation light source 3 Reflective material 4. Light-emitting components 10 Insect mating promotion device 131~136 Wall

Claims

1. 1. An insect mating promotion device for promoting mating of dipteran insects housed in a cage, comprising: an irradiation light source that irradiates light including visible light into the cage; a reflecting member disposed directly opposite the irradiation light source and reflecting light of a green to red wavelength from the light emitted from the irradiation light source toward the inside of the cage; Equipped with An insect mating promotion device characterized by:

2. The reflective member is a member that exhibits green or red color.

2. The insect mating promotion device according to claim 1.

3. The reflective member is disposed inside, on an inner wall surface, on an outer wall surface, or on the outside of the cage.

3. The insect mating promotion device according to claim 1 or 2.

4. The reflecting member is formed by the wall of the cage itself.

3. The insect mating promotion device according to claim 1 or 2.

5. The reflective member is made of paper or board that is green or red and is provided on the outer wall surface of the cage.

2. The insect mating promotion device according to claim 1.

6. An insect mating promotion device for promoting mating of dipteran insects housed in a cage, comprising: an irradiation light source that irradiates light including visible light into the cage; a light-emitting member as a light-emitting body that emits light of a green to red wavelength toward the inside of the cage; Equipped with An insect mating promotion device characterized by:

7. The light-emitting member is a light-emitting body that emits green or red light.

7. The insect mating promotion device according to claim 6.

8. The light emitting member is arranged inside, on an inner wall surface, on an outer wall surface, or on the outside of the cage.

7. The insect mating promotion device according to claim 6.

9. The light emitting member is formed by the wall of the cage itself.

7. The insect mating promotion device according to claim 6.

10. The light emitting member is a light that emits green or red light and is provided on the outside of the cage.

7. The insect mating promotion device according to claim 6.

11. The dipteran insect is an American soldier fly. The insect mating promotion device according to any one of claims 1 to 10.

12. 1. A method for promoting mating of dipteran insects housed in a cage, comprising: an irradiation step of irradiating the inside of the cage with light including visible light using an irradiation light source; a reflecting step of reflecting light of a green to red wavelength, among the light emitted from the irradiation light source, toward the inside of the cage using a reflecting member disposed directly opposite the irradiation light source; Contains, A method for promoting insect mating, comprising:

13. A method for promoting mating of dipteran insects housed in a cage, comprising: an irradiation step of irradiating the inside of the cage with light including visible light using an irradiation light source; a light emitting step of emitting light of a green to red wavelength toward the inside of the cage using a light emitting member as a light emitting body; Contains, A method for promoting insect mating, comprising:

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