JP3706885B2 - Spider helicopter attractant - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
[0002]
TECHNICAL FIELD The present invention relates to an attractant for a spider helicopterceae (scientific name: Leptocorisa chinensis), and more particularly to an attractant effective for controlling spider helicoptera.
[0003]
[Prior art]
[0004]
An adult spider helicoptera belonging to the family Hemiptera, Hemiptera, has occurred in Japan and other parts of East Asia and has caused great harm to rice and citrus fruits.
[0005]
It is very difficult to prevent or control the damage caused by this spider helicopterus, and it is very difficult to control the insect pests effectively. For this reason, a new type of control means different from conventional pesticides and conventional insecticides is strongly desired.
[0006]
On the other hand, the chemical structures of sex pheromones and aggregate pheromones have been elucidated for many pests.
[0007]
In addition, depending on the type of pests, these pheromone agents can be used to investigate the occurrence and development of these insects.In addition, these attractants can be used to capture a large number of adults and to confuse male and female mating behavior. A method for controlling pests by doing so is also being developed.
[0008]
[Problems to be solved by the invention]
[0009]
However, there is no known attractant effective for controlling spider helicopters.
[0010]
Therefore, an attractant having an excellent control effect on spider helicopters has been desired.
[0011]
[Means for Solving the Problems]
[0012]
With this background, the present inventors conducted research on the pheromone of the spider helicopterme, extracted the attractive component from the male spider bug, and elucidated the chemical structure of the active component substance. In addition, it was found that the compound synthesized by its chemical structure shows an effective attracting action against adult males of the spider helicopter, and a compound containing a specific component has an effective attracting action against adult males of the spider As a result, the present invention has been completed.
[0013]
That is, the means for solving the problems of the present invention are as follows.
[0014]
First, a spider helicopter attractant containing (E) -2-octenyl acetate, n-octyl acetate, and (E) -2-octenol as active ingredients.
[0015]
Secondly, a spider helicopter attractant containing (E) -2-octenyl acetate, n-octanol as an active ingredient.
[0016]
Thirdly, (E) -2-octenyl acetate (referred to as E2OA), n-octyl acetate (referred to as OA), (E) -2-octenol (referred to as E2O), E2OA: OA: E2O = 9 0.0 to 11.0: 3.0 to 5.0: A spider helicopter attractant containing a compound prepared to be 0.5 to 1.5.
[0017]
Fourth, (E) -2-octenyl acetate (referred to as E2OA) and n-octanol (referred to as OL) are set to E2OA: OL = 4.0 to 6.0: 0.5 to 1.5. A spider helicopter attractant containing a compound prepared as described above.
[0018]
Fifth, a spider helicopter attractant carrying (E) -2-octenyl acetate, n-octyl acetate, and a compound containing (E) -2-octenol as an active ingredient by a device.
[0019]
Sixth, a spider helicopter attractant carrying a compound containing (E) -2-octenyl acetate and n-octanol as an active ingredient in a device.
[0020]
Seventh, (E) -2-octenyl acetate (referred to as E2OA), n-octyl acetate (referred to as OA), (E) -2-octenol (referred to as E2O), E2OA: OA: E2O = 9 0.0 to 11.0: 3.0 to 5.0: A spider helicopter attractant carrying a compound prepared so as to be 0.5 to 1.5 with a device.
[0021]
Eighth, (E) -2-octenyl acetate (referred to as E2OA) and n-octanol (referred to as OL) become E2OA: OL = 4.0 to 6.0: 0.5 to 1.5. An attractant for the arachnid beetle, comprising the compound prepared as described above supported on a device.
[0022]
About the above, the mixing ratio of E2OA, OA and E2O is E2OA: OA: E2O = 9.0 to 11.0: 3.0 to 5.0: 0.5 to 1.5, preferably E2OA: OA : E2O = 10: 4: 1.
[0023]
Further, the mixing ratio of E2OA and OL is set to E2OA: OL = 4.0 to 6.0: 0.5 to 1.5, and preferably E2OA: OL = 5: 1.
[0024]
(E) -2-octenyl acetate [Octylyl acetate], (E) -2-octenol [Octenol], male and female of the spider helicopteran which are active ingredients of the attractant according to the present invention It exhibits attracting and behavioral stimulating effects on adults.
[0025]
In addition, (E) -2-octenyl acetate [Octanol acetate] and n-octanol [Octanol], which are active ingredients of the attractant according to the present invention, are attracting and stimulating to adult males of the spider helicopter. Indicates.
[0026]
In order to prepare the attractant according to the present invention, (E) -2-octenyl acetate, n-octyl acetate, (E) -2-octenol, and n-octanol are used in the preparation of the normal attractant. It can be carried out using the formulation technology that has been developed.
[0027]
For example, (E) -2-octenyl acetate, n-octyl acetate, (E) -2-octenol, n-octanol is used as it is or as a solution using an organic solvent such as dichloromethane, and this solution is used as an appropriate device. For example, it can be adsorbed on plastics such as polyethylene, rubber, or the like, or can be made into a practical form of attractant using a plastic capsule or an appropriate material or instrument corresponding to the capillary mode.
[0028]
[Example 1]
[0029]
Below, one Example of the attractant concerning this invention is described.
[0030]
(E) -2-octenyl acetate (referred to as E2OA), octyl acetate (referred to as OA), and (E) -2-octenol (referred to as E2O) to be E2OA: OA: E2O = 10: 4: 1 By doing so, attractant A1 according to the present invention was prepared.
[0031]
[Example 2]
[0032]
Similarly to Example 1, (E) -2-octenyl acetate (referred to as E2OA), n-octyl acetate (referred to as OA), and (E) -2-octenol (referred to as E2O) were converted into E2OA: OA: The compound was prepared such that E2O = 10: 4: 1.
[0033]
An attractant A2 according to the present invention was prepared by impregnating 100 mg of this compound into a pellet device made of an ethylene-vinyl acetate copolymer.
[0034]
[Example 3]
[0035]
Similarly to Example 1, (E) -2-octenyl acetate (referred to as E2OA), n-octyl acetate (referred to as OA), and (E) -2-octenol (referred to as E2O) were converted into E2OA: OA: The compound was prepared so that E2O = 10: 4: 1.
[0036]
An attractant A3 according to the present invention was prepared by impregnating 100 mg of this compound into a device composed of ES fiber and polyethylene film.
[0037]
[Example 4]
[0038]
The attractant B1 according to the present invention was prepared by setting (E) -2-octenyl acetate (referred to as E2OA) and n-octanol (referred to as OL) to be E2OA: OL = 5: 1. .
[0039]
[Example 5]
[0040]
In the same manner as in Example 4, the compound was prepared by changing (E) -2-octenyl acetate (referred to as E2OA) and n-octanol (referred to as OL) to be E2OA: OL = 5: 1. did.
[0041]
Attracting agent B2 according to the present invention was prepared by impregnating 10 mg of this compound into a pellet device made of an ethylene-vinyl acetate copolymer.
[0042]
[Example 6]
[0043]
In the same manner as in Example 4, the compound was prepared by changing (E) -2-octenyl acetate (referred to as E2OA) and n-octanol (referred to as OL) to be E2OA: OL = 5: 1. did.
[0044]
Attracting agent B3 according to the present invention was prepared by impregnating 10 mg of this compound into a device composed of ES fiber and polyethylene film.
[0045]
[Test Example 1]
[0046]
In order to identify the attracting component substance, the component substance was traced by a method of detecting a change in nerve potential generated when the antennae received the active substance using a bioelectric detector directly connected to a gas chromatograph.
[0047]
After field collection, male spider worms reared in rice ears are housed in glass containers, and the surrounding air is supplied with porous polymer beads (Tenax, Tenax TA) while supplying clean air. A power ram filled with was passed for 1 day.
[0048]
Immediately thereafter, an extract was obtained by passing hexane through a Tenax column.
[0049]
When this extract was analyzed by gas chromatography, a large number of components were observed.
[0050]
Therefore, when active components were examined using the gas chromatography / directly coupled antenna potential detector method (GC-EAD), five EAD active peaks were recognized as shown in FIG.
[0051]
When these five components were injected into a gas chromatograph direct mass spectrometer (GC-MS analysis) and analyzed using HP-1 and DB-Wax force ram, as shown in FIG. 2-octenyl acetate: peak III, n-octyl acetate: peak II, (E) -2-octenol: peak IV, n-octanol: peak V, (E) -2-octenal: peak I.
[0052]
Of these, (E) -2-octenal was an alarm pheromone secreted from male and female adults of the spider helicopterid, and the remaining four components were found to be aggregated pheromones.
[0053]
Separately synthesized (E) -2-octenyl acetate, n-octyl acetate, (E) -2-octenol, n-octanol: When the peak V was compared, it was consistent with the active natural product.
[0054]
From the above results, substances (natural products) exhibiting a very high attracting action against the spider Helicodidae belonging to the family Hemiptera are: (E) -2-octenyl acetate, n-octyl acetate, (E ) -2-octenol, n-octanol.
[0055]
In addition, (E) -2-octenyl acetate, n-octyl acetate, (E) -2-octenol, and n-octanol obtained by chemical synthesis were added to a gas chromatography / directly coupled antenna potential detector (GC-EAD). As a result, the EAD response was clearly recorded.
[0056]
[Test Example 2]
[0057]
As Invention Zone A, 10 plastic containers containing the attractant A2 obtained in Example 2 were prepared.
[0058]
In addition, as control group A1, a plastic container in which male spider worms (10 animals) are put together with rice ears and water, and as control group A2, an empty plastic container in which nothing can be placed. 10 pieces each were prepared.
[0059]
Set the 10 plastic containers of each ward prepared above in a hand-made basin type insect trap, prepare 10 traps for each ward, leave each trap in a paddy field in Ibaraki Prefecture, and the same environment An insect trap test was performed under the conditions.
[0060]
The test results were as follows.
[0061]
Inventive Zone A was able to catch 122 adult females of Spider Helicodidae and 135 adult males of Spider Helicodidae in a total of 10 traps.
[0062]
In the control group A1, a total of 10 traps were able to capture 116 adult females of the spider helicopter and 108 male spiders.
[0063]
In the control group A2, a total of 10 traps were not able to capture 0 adult females of the spider helicopterme and 0 male adults of the spider helicopterme, that is, none.
[0064]
As shown in the above results, the invention group A showed a strong attractive force against the spider helicopterid, like the control group A1.
[0065]
Considering the results of the above test examples, it was confirmed that the attractant according to Invention Zone A has an extremely high attracting effect on male and female adults of the spider Helicodidae belonging to the family Hemiptera.
[0066]
[Test Example 3]
[0067]
As Invention Zone B, 10 traps were prepared in which the attractant B2 obtained in Example 5 was placed in the center of a double-sided adhesive plate having a square of 20 cm.
[0068]
Further, as the control group B1, 10 traps were prepared in which the attractant A2 obtained in Example 2 was placed in the center of a square double-sided adhesive plate having a piece of 20 cm. Further, as the control group B2, a piece having a piece of 20 cm was prepared. Ten traps using a square double-sided adhesive plate were prepared.
[0069]
The trap prepared above was left in a paddy field in Ibaraki Prefecture, and a trapping test was conducted under the same environmental conditions.
[0070]
The test results were as follows.
[0071]
Invention Zone B was able to catch 74 adult males of spider helicoptera, with an average of 10 traps per trap.
[0072]
In the control group B1, the average number of traps per 10 traps was able to catch about 14 adult females of the spider bug and about 12 male spider bugs.
[0073]
In the control group B2, the average number of traps per 10 traps was 0, and no male spider Helm bugs, 0 males, that is, none could be caught.
[0074]
As shown in the above results, it was confirmed that Invention Zone B exhibits a strong attractive force particularly against adult males of the spider helicopter.
[0075]
Considering the results of the above test examples, it was confirmed that the attractant according to Invention Zone B has a very high attracting effect against male adults of the spider Helicodidae belonging to the family Hemiptera.
[0076]
【The invention's effect】
[0077]
According to the attractant of this invention, it has a high attracting effect with respect to the adult spider helicopterceae, and is excellent in the control effect.
[Brief description of the drawings]
FIG. 1 is a graph showing analysis results by gas chromatography.

Claims (8)

A spider helicopter attractant containing (E) -2-octenyl acetate, n-octyl acetate and (E) -2-octenol as active ingredients. (E) A spider helicopter attractant containing 2-octenyl acetate and n-octanol as active ingredients. (E) -2-octenyl acetate (referred to as E2OA), n-octyl acetate (referred to as OA), and (E) -2-octenol (referred to as E2O) are converted into E2OA: OA: E2O = 9.0 to 11 0.0: 3.0-5.0: A spider helicopter attractant containing a compound prepared to be 0.5-1.5. (E) -2-Octenyl acetate (referred to as E2OA) and n-octanol (referred to as OL) were prepared so that E2OA: OL = 4.0 to 6.0: 0.5 to 1.5. A spider helicopter attractant containing a compound. (E) 2-octenyl acetate, n-octyl acetate, and a spider helicopter attractant carrying a compound containing (E) -2-octenol as an active ingredient by a device. (E) A spider helicopter attractant carrying a compound containing 2-octenyl acetate and n-octanol as an active ingredient by a device. (E) -2-octenyl acetate (referred to as E2OA), n-octyl acetate (referred to as OA), and (E) -2-octenol (referred to as E2O) are converted into E2OA: OA: E2O = 9.0 to 11 0.0: 3.0 to 5.0: A spider helicopter attractant carrying a compound prepared to be 0.5 to 1.5 with a device. (E) -2-Octenyl acetate (referred to as E2OA) and n-octanol (referred to as OL) were prepared so that E2OA: OL = 4.0 to 6.0: 0.5 to 1.5. A spider helicopter attractant carrying a compound on a device.

Images