Breeding device for arthropods and breeding method for arthropods

Abstract

To provide a breeding container which facilitates avoiding density of arthropods in the breeding container, increases hiding places and enhances feeding efficiency or to provide a breeding method for arthropods using the breeding container.SOLUTION: A breeding device for arthropods is prepared in which three or more first feeding sheets each comprising a container body having an opening on an upper surface, a plurality of projecting parts projected upward in a breeding container composed of a lid body attached to the opening, and a bait holding part composed of a recess capable of holding a bait and formed between the adjacent projecting parts are laminated almost horizontally in a vertical direction while holding a gap where arthropods are hidden, and a flat plate shaped second feeding sheet is arranged above the first feeding sheet present in the uppermost layer.SELECTED DRAWING: None

Description

[Technical field]

[0001] The present invention relates to an apparatus for raising arthropods, such as crickets, and a method for raising arthropods. [Background technology]

[0002] In recent years, crickets such as Gryllus bifida and Gryllus tschonoskii have been attracting attention for their use as food and feed. In order to raise these crickets for food and feed purposes, it is necessary to improve the rearing environment and develop more efficient rearing methods.

[0003] A conventional method for rearing crickets has been disclosed in which, for example, a rearing container has an opening at the top, with side walls that are approximately vertical and at least the inner surfaces are smooth, and is deep enough that adult crickets cannot jump out, and inside this container an egg-laying container with a flat flowerpot structure containing an egg-laying medium made of crushed soil and sand with appropriate moisture control, and a water supply means are housed (see Patent Document 1).

[0004] In addition, with the expansion of the scale of cricket production, a method of rearing crickets has been adopted in which deep clothing cases are used as rearing containers, with food spread on half of the floor and egg molds placed vertically on the remaining half of the floor.

[0005] In addition, efforts have been made to quickly and efficiently separate and collect the reared organisms from the rearing unit. For example, a rearing device has been disclosed that includes at least one retaining member on which the organisms can rest, and a separating member that is provided in the rearing case and can move along the retaining member (see Patent Documents 2 and 3).

[0006] Furthermore, because some arthropods such as crickets have a cannibalistic ecology, rearing devices have also been developed to prevent cannibalism. For example, a rearing device has been disclosed that includes a plurality of rearing boxes for rearing organisms of the same age that have a cannibalistic ecology, and a live food supplying device for supplying the younger organisms from a younger organism rearing box in which the organisms are in a younger state to an older organism rearing box in which the organisms are in an older state as live food for the older organisms (see Patent Document 4). [Prior art documents] [Patent documents]

[0007] [Patent Document 1] Japanese Patent Application Publication No. 10-191834 [Patent Document 2] International Publication No. 2023-042404 Brochure [Patent Document 3] International Publication No. 2021-192820 Brochure [Patent Document 4] JP 2023-54497 A Summary of the Invention [Problem to be solved by the invention]

[0008] In the conventional method of rearing arthropods such as crickets, food was spread over about half of the floor of the rearing container, and the remaining floor and space were used as an area for the arthropods to move around, so the area of ​​the feeding area was very small and it was difficult to effectively use the rearing space. Also, in order to secure a large space for the arthropods to move around, the rearing container itself had to be large, so it was necessary to secure a large room to place the rearing container.

[0009] Therefore, the object of the present invention is to provide a breeding container which makes it easier to avoid overcrowding of arthropods within the breeding container, increases hiding places, and improves feeding efficiency, and to provide a method for breeding arthropods using such a breeding container. [Means for solving the problem]

[0010] The inventors of the present invention considered that the better the rearing environment for crickets, the better the area of ​​the feeding area per individual, since the larvae and adults perform territorial behavior. Therefore, in order to perform more efficient large-scale rearing, they focused on expanding the area of ​​the feeding area per individual. In this context, the inventors of the present invention discovered that the area of ​​the feeding area in the rearing container could be increased by stacking feeding sheets approximately horizontally in the rearing container and further placing a flat feeding sheet above the top layer, thereby completing the present invention.

[0011] That is, the present invention is as follows. [1] A breeding container is made up of a container body with an open top and a lid attached to the opening, and a first feeding sheet having a food receiving portion consisting of a plurality of protrusions protruding upward and a depression formed between adjacent protrusions capable of holding food is stacked in three or more layers in a substantially horizontal and vertical direction, with gaps for arthropods to hide in, characterized in that a flat second feeding sheet is placed above the first feeding sheet in the top layer. Arthropod rearing equipment. [2] The arthropod rearing device described in [1] above, characterized in that the second feeding sheet is stacked in two or more layers vertically with gaps for arthropods to pass through. [3] The arthropod rearing device described in [1] or [2] above, wherein the second feeding sheet, which is the top layer, has a smooth upper surface. [4] The arthropod rearing device described in [1] or [2] above, characterized in that the distance between the bottom surface of the lid body and the top surface of the second feeding sheet in the uppermost layer is 0.5 to 20 cm. [5] The arthropod rearing device described in [1] or [2] above, characterized in that the peripheral portion and / or top portion of the convex portion have minute projections and recesses for holding food. [6] An arthropod rearing device as described in [1] or [2] above, characterized in that the top or bottom surface of the first feeding sheet and / or the second feeding sheet are provided with legs for forming gaps for arthropods to hide in. [7] A method for raising arthropods by using the arthropod rearing device described in any one of [1] to [6] above, and placing food in the food receiving portion of the first feeding sheet and the second feeding sheet of the rearing device. [8] A method for raising arthropods as described in [7] above, characterized in that the particle diameter of the feed particles scattered on the feed receiving portion of the first feeding sheet or on the upper surface of the second feeding sheet is different from the particle diameter of the feed particles scattered on at least a portion of the first or second feeding sheet and the particle diameter of the feed particles scattered on the other first or second feeding sheets. Effect of the Invention

[0012] The arthropod breeding device of the present invention makes it possible to reduce crowding of arthropods within a limited breeding container and to increase feeding efficiency. [Brief description of the drawings]

[0013] [Figure 1] FIG. 2 is a front view of the entire arthropod breeding apparatus. [Diagram 2] FIG. 2 is a plan view of the arthropod breeding device with the lid removed. [Diagram 3] FIG. 2 is a perspective view of a first feeding sheet and a second feeding sheet. [Figure 4] FIG. 2 is a perspective view of a first feeding sheet having a typical protrusion. [Diagram 5] FIG. 13 is a perspective view of a first feeding sheet having a semi-cylindrical protrusion. [Figure 6] 1 is a perspective view of a first feeding sheet in which rectangular prism-shaped protrusions are evenly arranged vertically and horizontally. FIG. [Figure 7A] FIG. 13 is a diagram showing an embodiment in which minute projections and recesses are formed on the projections for holding bait. [Figure 7B] FIG. 13 is a diagram showing an aspect in which minute projections and recesses are formed on the projections and bait is held therein. [Figure 8] 13 is a diagram showing an embodiment in which legs are provided on the bottom surface of the first feeding sheet. FIG. [Figure 9] 13A and 13B are diagrams showing an aspect in which the width of the gap is changed in the second feeding sheet. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0014] The arthropod breeding device of the present invention is characterized in that, in a breeding container consisting of a container body with an open top and a lid attached to the opening, a first feeding sheet having a feeding receiving section consisting of a plurality of protrusions protruding upward and a depression formed between adjacent protrusions capable of holding feeding is stacked in three or more layers in a substantially horizontal and vertical direction with gaps for hiding arthropods, and a flat-shaped second feeding sheet is placed above the first feeding sheet in the top layer, and is not particularly limited as long as it is an arthropod breeding device, and is hereinafter also referred to as "the present arthropod breeding device". In addition, the arthropod breeding method of the present invention is not particularly limited as long as it is a method of breeding arthropods by using the present arthropod breeding device, placing feeding on the feeding receiving section and the second feeding sheet of the breeding device, and raising arthropods, and is hereinafter also referred to as "the present arthropod breeding method".

[0015] ■ Rearing equipment First, the present arthropod breeding apparatus will be described below.

[0016] (First feeding sheet) · Convex part and feeding part The first feeding sheet has a plurality of convex parts protruding upward. The first feeding sheet also has a food receiving part consisting of a depression formed between adjacent convex parts that can hold food. The shape of the convex parts can be an approximately conical shape, an approximately pyramidal shape, an approximately truncated conical shape, an approximately truncated pyramidal shape, an approximately bell shape, an approximately cylindrical shape, an approximately square prism shape, an approximately inverted conical shape, an approximately inverted pyramidal shape, an approximately cylindrical shape, an approximately semi-cylindrical shape, and the like. The convex parts may be arranged so as to extend in the horizontal direction. From the viewpoint of ensuring a large feeding area, it is preferable that the convex parts are formed so as to have a curved or inclined surface that gradually becomes wider as it moves downward from the top of the convex parts. The convex parts may also be shaped so that the bottom surface is raised upward, or may be hollow.

[0017] The intervals between adjacent convex portions may be approximately equal or irregular, but are preferably approximately equal and arranged with regularity, and may be arranged in a lattice pattern. The pitch between the convex portions may be 1 to 8 cm, or 2 to 6 cm. The height of the convex portions may be 1 to 5 cm, or 2 to 4 cm. If the convex portions have a slope on their periphery, the angle of the slope with respect to the horizontal direction may be 20 to 80 degrees, or 30 to 70 degrees.

[0018] The peripheral portion and / or the top of the convex portion may have minute irregularities for holding the bait. This minute irregularity allows the bait to be held not only in the bait receiving portion but also in the peripheral portion and / or the top of the convex portion, which makes it possible to expand the area of ​​the feeding area and increase the feeding efficiency. In addition, the feces of arthropods are approximately spherical and easy to roll. Therefore, when the peripheral portion has an inclination, the bait and the feces are less likely to mix at the peripheral portion, and the feces are more likely to accumulate locally near the base of the convex portion in the bait receiving portion, which makes it possible to relatively reduce the accumulation of feces in other bait receiving portions. As a result, the probability that the arthropods will encounter feces when ingesting food is reduced, and it is possible to reduce the intake of feces as well.

[0019] -Material and size of the sheet Examples of the material of the first feeding sheet include paper, plastic, etc. The first feeding sheet may be made of a smooth material or may have fine particles applied to the surface by a spray or the like to allow the claws of the legs of arthropods to hook onto it, but it is preferable that the material is capable of allowing the claws of the legs of arthropods to hook onto it. The size of each first feeding sheet may be 100% or less, 95% or less, 90% or less, 80% or less, or 70% or less of the area of ​​the bottom surface of the rearing container, calculated in terms of the vertical x horizontal plane of the sheet without taking into account the unevenness of the first feeding sheet.

[0020] Sheet stacking The first feeding sheets are stacked vertically in three or more layers, preferably four or more layers, more preferably five or more layers, and particularly preferably six or more layers, with gaps for arthropods to hide in. The width of the gap for arthropods to hide in can be adjusted appropriately depending on the arthropods to be reared, and may be 0.1 to 0.3 cm when rearing young larvae (1 to 15 days of growth), 0.2 to 0.5 cm when rearing middle-aged larvae (15 to 30 days of growth), and 0.5 to 1.0 cm when rearing old larvae (30 days or more of growth). The width of the gap may be constant between the first feeding sheets, may be stepwise wider or narrower, or may be random. For example, when six layers of the first feeding sheet are laminated, the gap between the first sheet and the second sheet from the bottom is called gap a, the gap between the second sheet and the third sheet from the bottom is called gap b, and there are five gaps a to e in that order. The width of each gap may be the same, or may gradually widen or narrow from a to e, or from e to a, or a and b may have the same gap width, and c, d, and e may be wider or narrower than that width. For arthropods with small bodies, it is preferable for the hiding place to be a hiding place that is difficult for arthropods with large bodies to enter. Therefore, when the arthropods to be raised vary in body size, it is possible to improve the rearing environment of the arthropods to be raised by adjusting the width of the gap in which the arthropods hide as a hiding place. By laminating the first feeding sheets in this way, the first feeding sheet serves two roles: a place to feed and a hiding place.

[0021] In order to form the gap, the first feeding sheets may be arranged so as not to overlap, but legs may be provided on at least two or more, preferably three or more, more preferably four or more, and even more preferably five or more, parts of the top or bottom surface of the first feeding sheet, according to the width of the gap to be formed. The height of the legs can be adjusted appropriately according to the body width of the arthropod to be grown, and may be 0.2 to 1.0 cm or 0.3 to 0.7 cm, and the length of the legs provided on each sheet may differ according to the width of the gap to be formed. In addition, when stacking the first feeding sheets, it is preferable to stack them so that the tops of the respective convex portions are at the same position in the vertical direction, from the viewpoint of preventing the first feeding sheets from overlapping and forming gaps.

[0022] (Second feeding sheet) -Sheet shape and material The second feeding sheet is a flat sheet. Examples of the material of the second feeding sheet include plastics such as polyethylene, polypropylene, and polyvinyl chloride, paper, wood, and metal, and may be flexible or rigid as long as food can be placed on the upper surface. The material may be permeable or non-permeable. In this second feeding sheet, at least the uppermost second feeding sheet, preferably all layers of the second feeding sheet, preferably have a smooth upper surface. By having a smooth upper surface, it is possible to suppress the claws of the legs of the arthropods from getting caught, and to reduce the escape of the arthropods from the breeding container when the lid is opened, and when the arthropods are harvested from the breeding container, it is possible to suppress the arthropods from remaining attached to the second feeding sheet, and it is possible to easily harvest without using a means to separate the arthropods from the sheet. Furthermore, since the second feeding sheet is smooth, it is easy to feed the entire sheet, and it is easy to replace the food and remove the feces, and it is possible to reduce the number of feedings and cleaning times, thereby reducing the labor required for breeding. Even if particulate food is placed on the upper surface of the second feeding sheet, the claws of the legs of arthropods are less likely to get caught on the particulate food, which reduces the risk of arthropods escaping from the rearing container. The size of the second feeding sheet, calculated as the area of ​​the bottom surface of the rearing container in terms of the length x width of the sheet, can be 100% or less, 95% or less, 90% or less, 80% or less, or 70% or less, and may be the same as, narrower than, or wider than the area of ​​the second feeding sheet.

[0023] In addition, by using the second feeding sheet, the mixing of food and feces can be minimized. When a deep breeding container is used and food is spread on the floor to a certain thickness as in the past, it takes a long time for the arthropods to finish eating the food, and the time for the food and feces to mix is ​​also long. On the other hand, by using the second feeding sheet, the feeding area is expanded, so the food can be spread thinly and widely, shortening the time for the food to be finished and the time for the food and feces to mix. Furthermore, it is possible to provide an abundant amount of food, and it is also possible to suppress cannibalism between the arthropods being raised, which occurs due to a shortage of food.

[0024] Sheet placement and stacking The second sheet is disposed above the first sheet, either in contact with the top of the protrusion of the first sheet or via legs provided on the upper surface of the first sheet.

[0025] From the viewpoint of expanding the area of ​​the feeding area, the second feeding sheet is preferably stacked approximately horizontally in two or more layers, preferably three or more layers, more preferably four or more layers, with gaps for arthropods to pass through. When stacking the second feeding sheets, legs may be provided at least in two or more places, preferably three or more places, more preferably four or more places on the top or bottom surface of the second feeding sheet. The height of the legs can be appropriately adjusted according to the body width of the arthropods to be grown, and may be 0.2 to 1.0 cm or 0.3 to 0.7 cm, and the length of the legs provided on each sheet may be different depending on the gap width to be formed.

[0026] (Breeding container) The container body in the breeding container has an open top and includes a bottom, a body connected to the bottom, and a space for breeding arthropods with an opening on the upper side of the body. The shape of this container body can be a rectangular parallelepiped, a cylinder, or the like. A lid is attached to the opening of the container body. The container body and the lid can be made of plastics such as polyethylene, polypropylene, and polyvinyl chloride, paper, wood, metal, and the like. From the viewpoint of increasing space efficiency and reducing capital investment for shelves, etc., the height of the container body is 15 to 40 cm, and the volume is 10,000 to 20,000 cm. 3 From the viewpoint of reducing escape of arthropods, it is preferable that the inner walls of the rearing container, i.e., the inner surface of the trunk of the container body and the bottom surface of the lid, are smooth.

[0027] The lid can be attached and detached from the container body. The lid can be provided with a ventilation window of, for example, 10 x 10 cm. The ventilation window allows the rearing containers to be stacked without using a shelf even when the lid is closed, making effective use of the space in the rearing room. Note that a ventilation window may be provided in the body (side) of the container body together with or instead of the lid. A water supply can also be installed inside the present rearing container.

[0028] The distance between the bottom surface of the lid and the top surface of the second feeding sheet at the top layer can be 0.5 to 20 cm, preferably 0.5 to 10 cm. In conventional arthropod breeding, it was common to ensure a distance of 20 cm or more between the lid and the sheet on which the arthropods are active in order to prevent escape. However, in the present arthropod breeding device, by providing a second feeding sheet, it is possible to reduce the risk of arthropods flying away and escaping even when the lid is opened, and therefore it is possible to reduce the distance between the lid and the top surface of the second feeding sheet and increase the space efficiency of the present breeding container.

[0029] (Feeding area) The food can be fed to the first feeding sheet and / or the second feeding sheet. The food may be fed to the entire upper surface of the first feeding sheet and / or the second feeding sheet, or to only a part of the sheet, or to only a part of the upper surface of each sheet. In addition to the food receiving part of the first feeding sheet, when the peripheral part and / or the top part of the convex part of the first feeding sheet have a minute unevenness for holding the food, the food can be fed to the minute unevenness. As described above, the feeding area can be widened in the present arthropod breeding device, which can reduce crowding and territorial disputes when arthropods eat food, leading to an improvement in survival rate.

[0030] (Arthropods) In the present specification, examples of arthropods include crickets such as Gryllus bifida and European house cricket, and cockroaches such as red roach and Dubia roach.

[0031] ■ Breeding method Next, the present arthropod breeding method will be described below. The present arthropod breeding apparatus used in the present arthropod breeding method is as described above.

[0032] (Type and placement of bait) The feed is not particularly limited as long as it is a feed that is usually used as feed for arthropods, and examples thereof include bran, rice bran, fish meal, soybean meal, etc., and these can also be used in combination. In addition, proteins, vitamins, fatty acids, etc. may be mixed as necessary. The size of the feed can be appropriately adjusted depending on the size of the arthropod to be reared, and examples include feed sieved to a size of 500 to 1,000 μm, or feed with a particle size of 100 to 500 μm. Since young larvae cannot eat coarse and large-sized feed, it is also possible to provide young larvae with fine powder feed filtered through a sieve with a fine mesh of 500 to 700 μm, and middle-aged and old larvae with feed filtered through a sieve with a coarse mesh of 700 to 1,000 μm. Furthermore, when young larvae are reared together with middle-aged and older larvae, in order to prevent cannibalism, the feed may be divided into two parts: one where fine powder feed filtered through a fine mesh sieve is spread, and the other where feed filtered through a coarse mesh sieve is spread. In this case, for example, fine powder feed filtered through a fine mesh sieve may be spread on the lower layer to attract young larvae, and feed filtered through a coarse mesh sieve may be spread on the upper layer, or conversely, fine powder feed filtered through a coarse mesh sieve may be spread on the lower layer to attract middle-aged and older larvae, and feed filtered through a fine mesh sieve may be spread on the upper layer.

[0033] The thickness of the feed to be fed to the first feeding sheet and the second feeding sheet can be 0.1 to 0.5 cm, or 0.2 to 0.3 cm. Of these, the feed to be spread on the second feeding sheet, which is the top layer, is preferably 0.2 cm or less so that it does not become a foothold for arthropods to escape. In addition, the feed to be spread on the second feeding sheet, which is the top layer, is preferably filtered through a sieve of 700 μm or less.

[0034] (Arthropod Harvesting) When harvesting arthropods from the breeding container, the lid is removed and the arthropods are dropped into a container for collecting arthropods. Before removing the lid, the entire breeding container can be swung horizontally or vertically to reduce the chance of the claws of the arthropods getting caught on the first and second feeding sheets. In particular, when a smooth second feeding sheet is used, the effect of reducing the chance of the claws of the arthropods getting caught and the effect of preventing escape are enhanced, making it easier to harvest arthropods. EXAMPLES

[0035] The present invention will be described in more detail below with reference to examples. The examples are not limiting.

[0036] An example of the present arthropod breeding apparatus and its usage state will be described with reference to Figures 1 to 3. Figure 1 is a front view of the entire arthropod breeding apparatus 1 (a cross-sectional view of only the container body 11), Figure 2 is a plan view of the present arthropod breeding apparatus 1 with the lid 12 removed, and Figure 3 is a perspective view of the first feeding sheet 3 (only the top layer) and the second feeding sheet 4.

[0037] The container body 11 has a bottom 13 and a trunk 14 connected to the bottom, with an opening on the upper side of the trunk, forming a space 15 for raising arthropods. The container body 11 has about three layers of first paper feeding sheets 3a-c stacked vertically, with gaps 16 for hiding arthropods. The lid 12 has a 10 x 20 cm ventilation window 17 made of mesh material in the center.

[0038] The first feeding sheet 3a-c has a convex portion 21 formed thereon, and is provided with a food receiving portion 22 consisting of a depression formed between adjacent convex portions 21 that can hold food. A smooth second feeding sheet 4a made of polyethylene is arranged to abut on the top of the convex portion 21 of the first feeding sheet 3c. A second feeding sheet 4b having legs 23 of 1.5 cm at five locations, namely, the four corners and the center of the bottom surface of the sheet, is stacked above the second feeding sheet 4a. A water supply device 24 is also arranged on the bottom 13 of the container body 11. In addition, food 25 is scattered on the first feeding sheet 3a-c and the second feeding sheet 4a, 4b (omitted in FIG. 1) to show the use state together with the arthropod breeding device. The distance between the bottom surface of the lid body 12 and the top surface of the second feeding sheet 4b in the uppermost layer is 5 cm. Crickets 26 are bred in the breeding device.

[0039] The above example of the rearing device allows the feeding area to be enlarged and the hiding area to be wider than when the feed is spread on a part of the floor. As a result, it is possible to avoid crowding when ingesting feed and increase the hiding area, which makes it possible to reduce cannibalism and insufficient feeding. Furthermore, the upper layer is provided with a smooth second feeding sheet 4, which not only enlarges the feeding area but also reduces the chance of the claws of the legs of the arthropods getting caught, making it possible to prevent the arthropods from escaping when harvesting them.

[0040] Next, the convex portions 21 provided on the first feeding sheet 3 will be described with reference to Figs. 4 to 7. Fig. 4 is a perspective view of the first feeding sheet 3 with a representative convex portion 21, in which the convex portions 21 are 3 cm high and 4 cm in diameter at the bottom, and are arranged in a lattice pattern with a pitch P of 5 cm at predetermined intervals. Fig. 5 is a perspective view of the first feeding sheet 3 with the convex portions 21, in which the convex portions 21 are approximately semicylindrical, 3 cm high and 3 cm in width at the bottom, extending parallel to the sheet surface, i.e., in the horizontal direction, and have a cavity 27 between the bottom and the approximately semicylindrical shape. Fig. 6 is a perspective view of the first feeding sheet 3 with the convex portions 21, 3 cm high and 3 cm in width at the bottom, evenly arranged vertically and horizontally.

[0041] Figure 7A is a partially enlarged view of the convex portion 21 shown in Figure 4, and shows an aspect in which tiny irregularities 28 for holding bait are formed around the entire peripheral edge of the convex portion 21, and the top is flat. Figure 7B shows an aspect in which bait is held near the tiny irregularities 28 of the convex portion 21 shown in Figure 7A above, and bait 25 is attached to the entire portion and the top.

[0042] FIG. 8 shows an embodiment in which the bottom surface of the first feeding sheet 3 is provided with five 2 cm long legs 23 .

[0043] Next, FIG. 9 shows an embodiment in which the width L of the gap is changed in the second feeding sheet 4. Three gaps, 16a-c, are formed by four second feeding sheets 4. Of these, the width L1 of the upper two gaps 16b and 16c is 1 cm, and the width L2 of the lower gap 16a is 0.7 cm. By adjusting the width L of the gap 16 in this way, in FIG. 9, the large cricket 26b cannot enter the lower gap 16a, and only the cricket 26a can enter. In other words, the lower gap 16a becomes a gap only for the cricket 26b, and the cricket 26a can eat without the risk of being eaten by the cricket 26b. Note that FIG. 9 shows an embodiment in which the width L of the gap in the second feeding sheet 4 is changed, but the width L of the gap in the first feeding sheet 3 may be changed in the same manner.

[0044] Next, using the above-mentioned breeding device, we investigated whether increasing the number of hiding places leads to an improvement in survival rate. In a breeding container 1 with a width of 16 cm, a depth of 23 cm, and a height of 7 cm, a first feeding sheet 3 with two protrusions 21 and a first feeding sheet 3 with six protrusions 21 were provided. 2The survival rate was examined by placing flat plates and scattering food. 25 crickets were placed in the cage one day after hatching and rearing was started. The survival rate began to differ from about the 20th day after hatching when the crickets reached the second stage, and on the 20th day, the survival rate was 63% when there were six protrusions 21 and 55% when there were two protrusions 21. Furthermore, on the 30th day, the survival rate was 52% when there were six protrusions 21 and 42% when there were two protrusions 21. Therefore, it was confirmed that the larger the hiding area, the higher the survival rate. [Explanation of symbols]

[0045] 1. Breeding equipment 2. First Thermal Cycler 3, 3a-c…First feeding sheet 4, 4a, b...Second feeding sheet 11...Container body 12…Lid body 13...Bottom 14...Torso 15…Space part 16, 16a-c…Gap 17…Ventilation window 21…Convex part 22…Feed receiving part 23...legs 24…Water dispenser 25…Feed 26, 26a, 26b...Crickets 27...Cavity 28...Slight unevenness L, L1, L2...Gap width P … Pitch

Claims

1. A breeding container is made up of a container body with an open top and a lid attached to the opening, and a first feeding sheet having a food receiving portion consisting of a plurality of protrusions protruding upward and a depression formed between adjacent protrusions capable of holding food is stacked in three or more layers in a substantially horizontal and vertical direction, with gaps for arthropods to hide in, and a flat second feeding sheet is placed above the first feeding sheet in the top layer. Arthropod rearing equipment.

2. 2. The arthropod breeding device according to claim 1, wherein the second feeding sheet is formed by stacking two or more layers vertically with gaps provided for the arthropods to pass through.

3. 3. The arthropod rearing device according to claim 1 or 2, wherein the second feeding sheet (12) which is the uppermost layer) has a smooth upper surface.

4. 3. The arthropod rearing device according to claim 1, wherein the distance between the bottom surface of the lid and the top surface of the second feeding sheet in the uppermost layer is 0.5 to 20 cm.

5. 3. The arthropod breeding device according to claim 1, wherein minute projections and recesses are formed on the periphery and / or top of the convex portion for holding food.

6. An arthropod rearing device as described in claim 1 or 2, characterized in that the top or bottom surface of the first feeding sheet and / or the second feeding sheet are provided with legs for forming gaps in which arthropods can hide.

7. A method for raising arthropods by using the arthropod rearing device according to any one of claims 1 to 6, and arranging food in the food receiving portion of the first feeding sheet and in the second feeding sheet of the rearing device.

8. The method for raising arthropods as described in claim 7, characterized in that the particle diameter of the food particles scattered on the food receiving portion of the first feeding sheet or the upper surface of the second feeding sheet is different from the particle diameter of the food particles scattered on at least a portion of the first or second feeding sheet and the particle diameter of the food particles scattered on the other first or second feeding sheets.

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