JP2005295937A - Artificial tree for insect spawning and method for producing the same - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To obtain an artificial tree for insect spawning suitably usable as a substitute for a spawning tree, and to provide a method for producing the artificial tree. <P>SOLUTION: The artificial tree 10 for insect spawning is obtained by mixing together tree sawdust and an inorganic binder such as rice bran followed by moderately hardening the mixture. In this artificial tree 10, the inside layer 10b is kept moistened moderately. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to an artificial tree replacing an egg-laying tree of an insect such as a stag beetle and a method for producing the same.

Conventionally, when breeding insects such as stag beetles, for example, a hodder tree after cultivating shiitake mushrooms adjusted to an appropriate size is used as a spawning tree. If this spawning tree is placed on a breeding floor such as a stag beetle and the predetermined conditions are adjusted, the stag beetle digs a hole in this spawning tree and lays eggs inside the spawning tree. The egg hatches and becomes a larva inside the spawning tree, and grows inside the spawning tree using the spawning tree as a feed. Thereafter, when the larvae grow to some extent, the spawning tree is divided at an appropriate time using, for example, pliers or a screwdriver, and the larvae inside are taken out and reared individually for each larvae.
Breeding of such stag beetles is very delicate. Especially, the spawning tree is a place for laying eggs such as stag beetles and is used for hatching eggs and growing larvae. Yes. For this reason, depending on the state of the egg-laying tree, stag beetles may not lay eggs, or the growth of larvae may be hindered, resulting in failure to obtain high-quality adults. Thus, attempts have been made to obtain healthy adults by adding nutrients and the like to the spawning tree, which is a spawning tree, in advance (see, for example, Patent Document 1).

JP 2003-144007 A (page 5)

In recent years, the production volume of hoda-trees in Japan has decreased due to the increase in imports of shiitake mushrooms and the like, and the decline in raw wood cultivation due to the spread of fungus bed cultivation, making it difficult to obtain the hoda-trees that can be used as spawning trees. In addition, as described above, the spawning tree is an important factor for the reproduction of insects and the like. For example, even if an ordinary dead tree or the like is used, the wood itself is too hard or has a nutritional value for growing larvae. The substitution was not possible because it was low. For this reason, development of a substitute that can be used as a spawning tree instead of a hoda tree is desired.
In addition, when a hoda tree is generally used as a spawning tree such as a stag beetle, including the above-described conventional example, as described above, it is necessary to perform an indexing operation for breaking the spawning tree and extracting larvae. In this indexing operation, a relatively hard spawning tree is forcibly divided while searching for larvae, and unless it is carefully done, the larvae may be damaged and healthy larvae may not be obtained.

  The present invention has been made in view of such circumstances, and it is possible to easily reproduce insects such as stag beetle and to promote the growth of insects and the growth of larvae, and can be suitably used as a substitute for spawning trees. An object is to provide a tree and a method for manufacturing the tree.

  The artificial tree for laying eggs of the present invention is characterized in that the sawdust of the tree is hardened with an inorganic binder, the surface layer is dry, and the inside has moisture.

Since the artificial tree for insect spawning constructed as described above is dried in a state where the sawdust and the inorganic binder are mixed, the surface layer is not as hard as wood but can be easily loosened. It is hardened with moderate hardness. Therefore, the surface of this insect spawning artificial tree can be made like a pseudo wood. On the other hand, since the inside of the artificial tree for insect laying has moisture and is not hardened as much as the surface layer, it is easy for an insect to dig a hole toward the inside. For these reasons, for insects such as stag beetles that have the habit of digging holes from the surface of the wood and laying eggs in the inside thereof, the artificial tree for insect laying eggs can promote egg-laying in the inside. Moreover, since the inside of the artificial tree for insect laying has moisture as described above, it can be made suitable as an environment in which insect laying and larvae grow.
Also, in the indexing work for extracting hatched larvae, this artificial spawning tree is not as hard as wood and can be easily loosened, so that the internal larvae can be taken out in a healthy state and breeding Can be prevented from failing.

  The binder is preferably made of at least one selected from rice bran, wheat flour, and starch. When these are used, in addition to being able to suitably solidify the sawdust as a binder, the hatched larvae feed on the sawdust, so that this binder can be ingested as a nutrient at the same time. Therefore, the growth of larvae inside the egg-laying tree can be promoted. In addition, when these are used as the binder, the insect spawning artificial tree can be more easily loosened.

  Moreover, you may add the nutrient for insects to the said artificial tree for insect spawning. Since these nutrients are mixed or absorbed in the sawdust, they can be taken by the larvae inside the artificial tree for insect spawning. Therefore, it is possible to promote the growth of larvae in the insect spawning artificial tree. In addition, by selecting nutrients according to the target insects, it can be used by adjusting to an artificial tree for laying eggs suitable for various insects.

In addition, the method for producing an artificial tree for insect spawning according to the present invention includes the following production steps (a) to (d).
(A) First step of sterilizing wood sawdust (b) Second step of obtaining a mixture by mixing the sawdust and an inorganic binder for solidifying the sawdust (c) Putting the mixture in a mold The third step (d), which is compressed and hardened to form a brittle solid, and the surface layer is dried, and the fourth step of drying the brittle solid to the extent that moisture remains inside.

  According to the above method for producing an artificial tree for insect spawning, the mixture obtained by mixing the sawdust and the inorganic binder is compressed and then dried appropriately, so that the surface layer can be hardened with an appropriate hardness. The surface of the artificial tree for insect laying thus obtained can be made like a pseudo timber, and moisture remains in the inside thereof, so that laying of insects and the like can be promoted as described above. Further, an insect spawning artificial tree suitable as an environment for laying eggs and larvae can be obtained by the moisture remaining inside.

  Moreover, you may further mix the nutrient for insects in said 2nd process. Since these nutrients are mixed and adhered to the sawdust, they can be ingested by the larvae inside the insect spawning artificial tree. Therefore, it can be set as the artificial tree for insect spawning which can promote the growth of a larva.

  As described above, according to the present invention, an insect spawning artificial tree can be obtained that can easily reproduce insects such as stag beetles and can be used suitably as a substitute for spawning trees by promoting egg spawning and larval growth. Can do.

  Next, preferred embodiments of the present invention will be described with reference to the accompanying drawings. FIG. 1 is a schematic view showing an appearance of an artificial tree for insect spawning according to an embodiment of the present invention and a part of its cross section. In the following description, an insect spawning artificial tree applied to stag breeding will be described as an example.

  The artificial tree 10 for egg laying shown in FIG. 1 is a solid material formed into a cylindrical shape by mixing, for example, sawdust of oak wood and a binder for solidifying the sawdust. Hereinafter, the manufacturing method of this artificial tree 10 for insect laying eggs is demonstrated.

  FIG. 2 is a schematic view showing a manufacturing process of the insect spawning artificial tree 10, and FIG. 2A shows sawdust 11 which is a main raw material of the insect spawning artificial tree 10. The sawdust 11 is powdered wood waste generated when processing oak wood with a saw or the like. The sawdust 11 can be made of wood other than the above-mentioned oak wood, but it is preferable to use sawdust of deciduous broad-leaved wood such as oak wood, oak wood, cucumber wood, and beech wood. This is because insects such as stag beetles and their larvae eat these deciduous broad-leaved trees more favorably.

  FIG. 2B schematically shows a sterilization process which is the first process. Sawdust 11 is put into a sealed container 20 as shown in the figure and sprayed with steam 21 or the like for sterilization. This is to eliminate bacteria and pests that are harmful to stag eggs and larvae. Moreover, you may perform this sterilization process by immersing the sawdust 11 in a hot water.

FIG. 2C schematically shows a second step of adding and mixing a binder or the like to the sawdust 11. In the second step, the mixture 15 is obtained by adding and mixing the inorganic binder 12 and the nutrients 13 to the sawdust 11 sterilized in the first step. At this time, the sawdust 11 is in a state of moisture due to steam or the like at the time of the sterilization treatment, but if necessary, an appropriate amount of moisture 14 may be added.
The binder 12 is added to bind and solidify the powdered sawdust 11, and in this embodiment, rice bran is used and about 20% is mixed with the sawdust.

  The binder 12 does not have adhesive strength as much as an adhesive, and any other inorganic rice bran can be used as long as it is an inorganic material that can bind and solidify the sawdust 11, but is selected from rice bran, wheat flour, and starch. It is preferable to use at least one. The reason for this is that these can be appropriately solidified in such a manner that sawdust 11 can be easily loosened. These rice bran, flour, and starch are nutrients for the larvae, and the binder 12 is mixed with the sawdust 11 so that it adheres to the sawdust 11. However, the hatched stag beetle has the binder 12 attached to the sawdust. This is because the larvae can be ingested together with the sawdust 11 and the larvae inside the artificial tree 10 for laying eggs can be promoted since the binder 12 as a nutrient is ingested as a feed.

  For example, beer yeast is used as the nutrient 13, and by adding this to the sawdust 11, the larvae inside the insect spawning artificial tree 10 can be ingested in the same manner as the binder 12. Beer yeast is known as an excellent nutrient for stag beetle larvae, which can promote the growth of larvae. As this nutrient 13, you may add a kinaco, an amino acid, etc. other than brewer's yeast.

Further, as the nutrient 13, an inoculum of a wood-rotting fungus such as shiitake mushroom or kawara mushroom may be added. Although such inoculum is not directly a larval nutrient, it can be added to the insect spawning artificial tree 1 to cultivate wood-rotting fungi inside the insect spawning artificial tree 1 as well as a shiitake mushroom. It is possible to obtain an effect of promoting egg-laying such as insects. That is, stag beetles larvae feed on the trees that have been born, and are considered to be nutrient sources by ingesting and decomposing cellulose and lignin contained in the components of the trees. If wood-rotting fungi are cultured inside the artificial tree 1 for egg laying, cellulose contained in sawdust will be decomposed moderately by the wood-rotting fungi so that larvae can be easily ingested as food and promote their growth. be able to. In addition, adult stag beetles have the habit of trying to lay eggs by judging that wood inoculated with such shiitake mushrooms and the like is suitable for laying eggs, and therefore can promote the laying of adults.
Moreover, this nutrient 13 can be adjusted to the insect spawning artificial tree 10 suitable for various insects by selecting the nutrient according to the target insects.

  FIG.2 (d) has shown the 3rd process which solidifies the mixture 15 obtained at the 2nd process. The mixture 15 has an appropriate viscosity. After the mixture 15 in such a state is put into, for example, a cylindrical mold 30, it is compressed and compressed by a plunger 31 or the like as shown in the figure. And this compacted mixture 15 can be made into the cylindrical brittle solid substance 16 by removing from the formwork.

  FIG. 2E shows a fourth step of drying the brittle solid material 16 obtained in the third step. As shown in the figure, the brittle solid material 16 is placed in, for example, a container 40 having good air permeability and dried in the shade for about three months. Then, the brittle solid material 16 is dried to such an extent that the surface thereof is dried and has an appropriate hardness, and the central portion thereof is damp. In addition, when the moisture is insufficient when drying, water may be appropriately replenished. During this time, the added rice bran and brewer's yeast can be easily ingested by the larvae by, for example, reliably adhering to the sawdust 11 properly. In addition, when a wood decay fungus is added as the nutrient 13, the inoculum is cultured inside the brittle solid 16 during the drying, and the hypha can be uniformly developed in the brittle solid 16. It can be in a state suitable for egg laying or larval growth. In this way, the artificial tree 10 for insect laying is obtained.

Returning to FIG. 1, the artificial egg-laying artificial tree 10 obtained as described above includes a surface layer 10 a that has been dried to a substantially moisture-free state, and an inner layer 10 b that is maintained in a moderately humid state. It is comprised by two layers. The inner layer 10b is dried so as to occupy an area of about 90% in the circular cross section D perpendicular to the cylindrical axis direction of the insect spawning artificial tree 10. The proportion of the inner layer 10b in the insect spawning artificial tree 10 is adjusted by the components used for the sawdust 11, the binder 12, the nutrient 13, and the like, and is set to an optimum value for the insect. In addition, the surface layer 10a is hard and hardened because it has been dried to a substantially moisture-free state, but it can be easily loosened because it originally solidifies sawdust 11 etc., and for insects that dig a hole in wood It has moderate hardness.
According to the insect spawning artificial tree 10 configured as described above, the inner layer 10b is maintained in a state with appropriate moisture, so that it can be suitable as an environment in which insect spawning and larvae grow.

  Moreover, according to the manufacturing method of the artificial tree 10 for insect spawning which concerns on this embodiment mentioned above, after compressing the mixture 15 which mixed the sawdust 11 and the inorganic binder 12, it is dried moderately, Therefore The surface layer 10a Can be hardened with moderate hardness. The surface of the insect laying artificial tree 10 thus obtained can be made like a pseudo timber. On the other hand, since the insect laying artificial tree 10 inner layer 10b has moisture and is not hardened as hard as the surface layer 10a, it is easy for an insect to dig a hole toward the inside. For this reason, for insects such as stag beetles that dig a hole from the surface of the wood and lay eggs in the inside, the artificial tree 10 for laying eggs can promote egg-laying in the inside.

Next, a method for breeding stag beetle using the insect spawning artificial tree 10 according to the present embodiment will be described. FIG. 3 is a schematic view showing how the artificial tree for insect spawning is used according to the embodiment of the present invention.
For example, a stag breeding floor S shown in FIG. 3 is used for breeding stag beetles. The breeding floor S includes a breeding case 2 made of transparent plastic, an earthy breeding mat 3 for breeding an appropriate amount of insects, and an insect spawning artificial tree 10 according to the present embodiment. It has.

  A stag beetle K1 (male) and a stag beetle K2 (female) are introduced into the breeding floor S one by one to prepare an appropriate environment. Then, if the stag beetles K1 and K2 in the breeding floor S are mated, the stag beetle K2 (female) dug a hole in the insect spawning artificial tree 10 and a plurality of eggs (not shown) at several locations inside the hole. Give birth. When the insect laying artificial tree 10 containing the eggs is held under a predetermined condition for a certain period of time, the eggs hatch inside the insect laying artificial tree 10 and become larvae (not shown). And if the larvae grow to some extent, the larvae can cannibalize inside, so when the larvae grow to some extent, the larvae are extracted from the artificial spawning artificial tree 1 and the larvae are individually raised for each animal. To do.

In this case, the insect spawning artificial tree 10 according to the present embodiment is obtained by solidifying sawdust and the like so that moisture remains, and is not as hard as wood, so that it can be easily loosened. Therefore, even when the indexing operation for extracting larvae from the insect spawning artificial tree 10 is performed, the larvae inside can be extracted in a healthy state without damaging them.
Also, the timing of this indexing work is to estimate the time when the eggs were laid in the spawning tree, and to predict when the eggs would hatch and become larvae from that time. Or larvae just after hatching. These are very weak and difficult to handle. Even in such a case, the insect spawning artificial tree 10 according to the present embodiment does not cause fatal damage to eggs or the like, so that it can be kept individually on the breeding floor as it is. Therefore, when the insect spawning artificial tree 10 is used, anyone can easily perform this work without requiring skill in the indexing work.

  As described above, the artificial tree for insect spawning 10 according to the present embodiment can facilitate the breeding work of insects such as stag beetles and can promote the spawning and growth of larvae. Can be suitably used.

Moreover, although the artificial tree 10 for egg laying of this embodiment was shape | molded in the column shape, as long as the shape can be used for an insect reproduction, you may shape | mold any shape.
In addition, the artificial tree 10 for laying eggs of the present embodiment may be used by being inserted into a cylindrical paper or plastic container that covers the side surface while being in close contact with the side surface. This container does not cover the entire surface of the insect laying artificial tree 10 but, for example, does not cover the upper and lower surfaces of the cylinder, so that the stag beetle K2 can lay a hole from its surface and lay eggs. A shape in which a part of the surface of the tree 10 is always exposed is used. By inserting the insect spawning artificial tree 10 into the container in this way, it is possible to prevent the insect spawning artificial tree 10 from collapsing when being carried and the handling of the insect spawning artificial tree 10 is facilitated. .

  In addition, the insect spawning artificial tree 10 according to the present embodiment can be used for breeding not only stag beetles but also insects whose main food is wood, such as beetles and longhorn beetles. Moreover, the waste material after using the insect spawning artificial tree 10 can be reused as the insect spawning artificial tree 10 by solidifying it again, or can be used as larvae as it is.

  In addition, the artificial tree for insect laying eggs and the method for producing the same according to the present invention are not limited to the above-described embodiments, and the types, compositions, blends, etc. of sawdust, binder, nutrients, etc. It can change suitably based on the meaning of the present invention.

It is the schematic diagram which showed the external appearance of the artificial tree for insect spawning which concerns on embodiment of this invention, and a part of its cross section. It is the schematic diagram which showed the manufacturing process of the artificial tree for insect spawning which concerns on embodiment of this invention, (a) sawdust which is a main raw material, (b) is a 1st process, (c) is a 2nd process, ( d) shows the third step, and (e) shows the fourth step. It is the schematic diagram which showed the usage condition of the artificial tree for insect spawning which concerns on embodiment of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Artificial tree for egg laying 10a Surface layer 10b Inner layer 11 Sawdust 12 Binder 13 Nutrient 15 Mixture 16 Brittle solid matter

Claims (5)

  An artificial tree for insect spawning, characterized in that sawdust from trees is hardened with an inorganic binder, the surface layer is dry, and the inside has moisture.   The artificial tree for insect spawning according to claim 1, wherein the binder comprises at least one selected from rice bran, wheat flour, and starch.   The artificial tree for insect spawning according to claim 1, wherein nutrients for insects are added. The manufacturing method of the artificial tree for insect spawning characterized by including the following process (a)-(d).
(A) First step of sterilizing wood sawdust (b) Second step of obtaining a mixture by mixing the sawdust and an inorganic binder for solidifying the sawdust (c) Putting the mixture in a mold The third step (d), which is compressed and hardened to form a brittle solid, and the surface layer is dried, and the fourth step of drying the brittle solid to the extent that moisture remains inside.   The method for producing an artificial tree for insect spawning according to claim 4, wherein in the second step, insect nutrients are further mixed.

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