JP2002047106A - Poison bait agent against wasp - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a poison bait agent against wasps, which can kill all the harmful wasps, such as Vespa mandarinia, in a nest, because the poison bait agent can effectively be carried in the nest. SOLUTION: This poison bait agent against the wasps, characterized by adding an insecticidal ingredient to an eating ingredient comprising an eating bait for the larvae of the wasps.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

TECHNICAL FIELD The present invention relates to a poison bait suitable for controlling bees.

[0002]

2. Description of the Related Art In recent years, as harmful bees such as hornets approach the living area of humans, damage to bees has increased, and the number of requests for bee removal to local governments in each prefecture has been increasing year by year. I have. In addition, since wasps are also natural enemies of honey bees, the increase and decrease of wasps is a major factor that affects the yield of honey in the beekeeping industry.

[0003] Conventional methods for controlling pests include spraying the pesticide directly onto the pest, applying the pesticide to the path of the pest or the entire living space in advance, and attracting the pest with an attractant. A method using a so-called attracting trap, in which a poison bait prepared by adding an insecticidal component to a bait and placing it on the path of a pest, has been used.

[0004] As a pesticide or a pesticide for bees,
Insecticide sprays and attracting traps are already on sale, but insecticide sprays are very dangerous because they can excite bees and get counterattacked, and attracting traps are only for bees that pass nearby. There is no effect, and bees cannot capture a large number of bees at once, because many individuals do not form a matrix to the same feeding ground as ants. Since bees have a large number of worker bees in one nest, killing or capturing a small number of bees has little effect on the whole nest, and the method using insecticidal sprays and attracting traps is not a fundamental solution .

At present, the most effective method is to use a poison bait, as described in, for example, JP-A-59-7811.
No. 1 discloses a poison bait for controlling insect pests comprising pyrethroids, food attractants, compounding aids added as required, and other additives, and the like.
No. 28303 discloses a poison bait for controlling pests comprising a powdery insoluble poison, an oil base, an emulsifier, an attractant, a thickener and water.

However, since all of the above poison baits are quick-acting, they can kill a small number of bees, as in the case of the attracting trap, but affect a large number of bees and the whole beehive. There is a problem that it is difficult to give.

Japanese Patent Application Laid-Open No. 8-175910 discloses a poison bait for ants containing a specific pyrazole compound as an insecticidal component. However, since this poison bait is slow-acting and ineffective until it is brought back to the nest, it is effective against ants carrying a large number of individuals in a matrix and feeding from the same feeding ground, For bees,
Since one or a few individuals only make round trips from the feeding ground to the nest, after the individual dies, the poison bait will not be carried to the nest and will affect many bees and the entire nest of bees There is a problem similar to the above, which is difficult.

[0008]

SUMMARY OF THE INVENTION In view of the above problems, it is an object of the present invention to destroy harmful bees such as hornets throughout the nest, because the bait is effectively carried into the nest. To provide a bee bait that can be used.

[0009]

The bee poison according to the first aspect of the present invention is characterized in that an insecticidal component is added to a dietary component consisting of a bee larval diet.

[0010] The foodstuffs of bee larvae as eating ingredients used in the present invention are not particularly limited, and include, for example, mealworms, silkworm pupae, krill, fish meal,
Caterpillars, locusts, locusts, mantis, crickets, katydids, butterflies, moths, flies, akamuushi, beef, pork, chicken, and the like are preferably used. Feeding feed of bee larvae as these eating ingredients may be used alone,
Two or more types may be used in combination.

The insecticidal component used in the present invention is not particularly limited. For example, organophosphorus insecticides such as fenitrothion, diazinon, marathon and pyridafenthion; carbamate insecticides such as carbazole, propoxur and ethiophenecarb Pyrethroid or pyrethroid-like insecticides such as permethrin, phenothrin, cyphenothrin, d-resmethrin, dl-resmethrin, tralomethrin, deltamethrin, silafluofen, cypermethrin, etofenprox; aminohydrazine-based insecticides such as hydramethylnon; fipronil; Pyrazole compounds; insect growth inhibitors such as diflubenzuron, triflumuron, cyromazine, hydroprene, pyriproxyfen, methoprene; or Boric acid, borax, imidacloprid, Surufuramido and the like, is preferably used. These insecticidal components may be used alone or in combination of two or more.

The amount of the insecticidal component to be added to the food component consisting of the feed of the bee larvae depends on the type of bee to be eliminated, the type and composition of the feed of the bee larva as a food component, the type and composition of the insecticide component, It may be appropriately set according to the degree of desired killing property, the desired time to exert the killing effect, and the like, and is not particularly limited.

The poison bait for bees of the present invention may further comprise a binder, if necessary, as long as it does not impair the achievement of the object of the present invention, in addition to the edible component and the insecticidal component, which are the essential components of bee larvae. One or more of various additives such as a shape-improving agent, a bulking agent, a colorant, and a fragrance may be added.

The above-mentioned binder is not particularly limited, and examples thereof include starch, dextrin, glycogen, alginate, gelatin, carrageenan, flour,
Examples include agar, sugar, honey, and cellulose derivatives.
These binders may be used alone or in combination of two or more.

The formulation of the bee bait of the present invention is not particularly limited.
Granules, tablets, gels, pastes, powders and the like can be mentioned, and any of these preparations may be used.

The method for producing the bee bait of the present invention is not particularly limited. For example, the consumption of bee larvae, which is an essential component, at room temperature or under heating using a conventional stirring mixer. After uniformly stirring and mixing each predetermined amount of the food ingredient and the insecticidal component consisting of feed and one or two or more predetermined amounts of various additives to be added as necessary, the desired formulation form is obtained by a conventional method. By processing the formulation so as to obtain the desired poison bait for bees, it can be obtained.

[0017]

Since the bee bait of the present invention uses a bee larvae feed as a food ingredient, adult bees that carry their food to the nest (worker bees) do not eat this poison bait, and therefore kill insects. Poison bait can be carried into the nest many times from the same feeding ground without being affected by the component (poison). The poisonous bait carried into the nest in this way is consumed by the larvae in the nest, so that the larvae in the nest can be destroyed first.

On the other hand, since adult bees do not have enzymes that digest proteins in their bodies, they rely on amino acids contained in body fluids produced by the larva for nutrients derived from proteins. Therefore,
When the larvae are destroyed, the adults lose their source of protein-based nutrients, which in turn cause the adult to die,
As a result, the entire nest can be destroyed.

In addition, while the diet of honey bee larvae is a vegetable protein such as pollen, the diet of harmful bee larvae such as wasps is an animal protein such as caterpillars. Taking advantage of this difference, by using an animal protein as a feedstuff, it can be a selective bee poison when taking measures against harmful bees such as wasps in the beekeeping industry.

[0020]

BEST MODE FOR CARRYING OUT THE INVENTION The present invention will be described in more detail with reference to examples, but the present invention is not limited to these examples. In the examples, “parts” means “parts by weight”.

(Example 1) 3 parts of hydramethylnon as an insecticidal component and 97 parts of dextrin as a binder were added to 100 parts of meal worms which were freeze-dried and then pulverized into powdered form as eating ingredients. After mixing, a small amount of water was further added, and the mixture was extruded and granulated by an extrusion granulator to produce a granular poison bait for bees.

(Example 2) Example 1 was repeated except that 100 parts of powdered meal worms were used instead of 100 parts of powdered mealworms as moisturizing ingredients.
In the same manner as in the above case, a granular bee bait was prepared.

The performance (removability and killing property) of the poison bait for bees obtained in Examples 1 and 2 was evaluated by the following methods. The results were as shown in Table 1.

Taking off property: Thirty bee poison baits were placed on a small dish and allowed to stand for three days in the wasp feeding ground, and the number of taken out of the thirty were confirmed (counted).

Killing property: A bee poison bait was eaten by the last instar larva of the Japanese hornet, and one day later, whether or not the larva was active was visually observed.

[0026]

[Table 1]

As is clear from Table 1, all of the bee poison baits of Examples 1 and 2 according to the present invention were carried away in three days. This indicates that the adult wasp (working bee) of the Japanese hornet transported the venom for bees many times into the nest from the feeding ground without being affected by the insecticidal component (poison).

Further, the last instar larva of the Japanese hornet, which ate the bee bait of Example 1 and Example 2, stopped its activity one day after eating. This indicates that the bee bait exhibited excellent killing properties.

[0029]

As described above, by using the poison bait for bees of the present invention, adult bees (worker bees) carrying food to the nest can be subjected to many times without being affected by insecticidal components (poisonous). The bee poison bait can be carried into the nest from the same feeding ground. Since the bee bait carried into the nest in this way is consumed by the larvae of the bees in the nest, first, the larvae in the nest can be destroyed.

When the larvae in the nest are destroyed, adult bees that rely on amino acids in body fluids to release protein-based nutrients lose their protein-based nutrient supply. Devastating in a chain. Therefore, the bees can be destroyed in the whole nest in a relatively short time.

As described above, the bee poison bait of the present invention can be effectively and easily destroyed in the whole nest as described above, and thus is suitably used for controlling harmful bees such as wasps. Further, since only the above harmful bees can be selectively removed, the harmful bees can be suitably used for beekeepers.

Claims (1)

[Claims] 1. A poisonous bait for a bee characterized in that an insecticidal component is added to a food component consisting of a bee larval diet.