FI61605C - INSEKTFAELLA INNEHAOLLANDE ETT INSEKTLOCKANDE MEDEL - Google Patents

Description

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Patent r.ieddeiat (51) Kv.ik? Yint.ci.3 A 01 M 1/02, 1/14 FINLAND —FINLAND (21) P »t» nttlh «k * mu» - Pu «nun» eknlng 7722 ^ 5 (22) H »k * mltpllv» - Anieknln | sdtg 21.07 · 77 ^ ^ (23) AlkuplivI - Glklghutsdtg 21.07.77 (41) Tullut | ulklMkil - Bllvlt effantllg 21.01.78

Patent · and reki.terih.Hitu. (44) Nlhtivllcip ^ j. TO THE PUBLICATION Date - λ1 05 «2

Patent- och rcgifterctyreiaan '7 Aruftktn utitgd och utl.ikrlftun publicerad (32) (33) (31) Pyy4 # tty «uolkuut —Bugird priority 23.07-76

England-England (GB) 308l8 / 76 (71) Shell Internationale Research Maatschappij BV, Carel van Bylandtlaan 30, The Hague, The Netherlands (NL) (72) Alistair Christie Hill, Sittingbourne, Kent, Lyn Davies, Sittingbourne, Kent, England -England (GB) (7l) Oy Kolster Ab (51) Insect trap containing insect attractant -Insektfälla innehällande ett insektlockande medel

The invention relates to an insect trap containing an insect attractant in the vicinity of a surface containing a sticky substance.

Some insect traps use special insect attractants to draw insects into the trap inside which or on top of the sticky substance the insects catch.

It has been found that the effectiveness of such gear can be greatly improved when an insect attractant is introduced in the immediate vicinity of the gear under controlled conditions.

In the present insect trap, this is accomplished by including a sleeve portion, an electric heater positioned below the sleeve portion, the sleeve portion being positioned directly over said heater so that insects enter the sleeve portion only through its tip, an insect pheromone reservoir immediately located above the heater, and a sticky substance added to the inner surface of the sleeve member, wherein the heater vaporizes 2 61605 insect pheromones, causing a convection air flow that carries the pheromone through the tip of the sleeve member to the surrounding atmosphere.

From the point of view of nature protection, the present invention is particularly advantageous because, when used, it is possible to significantly reduce the flight insect population of a room or other enclosed space without a chemical insecticide.

The sleeve part can be square, rectangular or circular in diameter, but it can also be made in other shapes, e.g. a bowl, a plate or a trough.

Both ends of the sleeve are either completely or partially open so that the air flow can be passed through it.

In addition to the sticky adhesive, the heater and insect attractant may also be inside the sleeve. However, it is easier to place the container and sleeve containing the attractant on top of the heater, so that the rising airflows due to the heating both facilitate the evaporation of the attractant and transport the vapors out of the sleeve.

Better results are obtained if the outlet of the attractant (the upper opening of the sleeve) is recessed, which is difficult for flying insects, especially houseflies, to get out of. The conical insertion opening is particularly practical. The inner surface of the sleeve is preferably light because flying insects fly to a light rather than a dark target. The outer surface of the sleeve is preferably warm or dark in color (brown, black, etc.) due to the difference. the colors attract flying insects.

For example, the following compounds can be used as attractants: 1. 1- (3,4-methylenedioxyphenyl) -2-phenyl-1,3-propanediol; 2. 6-methyl or 2-methylpentyl ester of 3-cyclohexene-1-carboxylic acid; 3. 4,7-methane-inden-6-ol-3a, 4,5,6,7,7a-hexahydroformate; 4. 2-methoxyethyl ester of m-toluic acid; 3 61605 5. m-Toluene 2- (2-butoxy-ethoxy) -ethyl ester; 6. tetrahydro-2- (2-propynyloxy) pyran; 7. "Staley's Bait No. 2"; 8. "Staley's Bait No. 7"; 9. feather flour hydrolyzate.

Naturally occurring pheromones are also known, the most important of which are listed in the following table, as well as the insects that are exposed to them:

Pheromone Insect 4- (p-hydroxyphenyl) -2-menol fly, Dacus curcurbutanone acetate battae (Coquillet) cis-7,8-epoxy-2-methylcho butterfly, Porthetria dispar (L) octadecane (Z) -7-hexadecene o-ol- "pink shell worm", Pec-acetate tinophora gossypiella (Saunders) (Z) -7-dodecene-1-ol acetate "cabbage looper"

Trichoplusia ni (HUbner) (Z) -7-dodecen-1-ol "cabbage loop" 4-allyl-1,2-dimethoxybenzene fruit fly, Dacus fungus dorlasis (Hendel) (Z) -9-tricocene house fly, Musca domestica ( L) phenethylpropionate + euge- Japanese hood beetle, Popillia noli (7: 3) japonica (Newman) t-butyl-4- (or 5) -chloro-2 Mediterranean fruit fly, Ceratimethylcyclohexanecarboxytis capitata (Weidemann) plate __

Other compounds that have been found to attract houseflies can be classified as follows: 1. Decay products (mainly amines) 2. Fermentation products (aldehydes, ketones and alcohols) 3. Simple carbohydrates (mono- and disaccharides) 4. Esters The most effective insects in these categories attractants include skatole, indole, ammonium hydroxide, maltose, acetophenone, benzyl alcohol, pyridine, thymol, dioctyl phthalate, glycerol dioleate, o-monooleate, Jasmyn1, radoxane and herboxane.

4 61605

According to the applicant, (Z) -9-tricocene or a mixture thereof and (Z) -9-uneikocene in a trap according to the present invention is very suitable for trapping a common house fly, Musca domestica. The attractant may be either liquid in the container or solid, e.g. dispersed in cellulose or inorganic absorbents. A simple, effective lure system is a porous material impregnated with a desired lure, e.g., filter paper or blotting paper. In general, the best result is obtained when about 0.5 to 150 mg of attractant is added to paper discs with a diameter of about 2.5 cm. If desired, the attractant can be stabilized by adding an antioxidant to the container.

The sticky attachment used to catch flying insects must remain sticky for a long time. Examples of such substances are solutions of resin, rubber and mineral oil, polybutenes and mixtures of wax and bitumen.

For a more detailed description of the invention, the accompanying drawings are used, in which - Figure 1 is a perspective view of a gear according to the present invention; Figure 2 is a perspective view of the combined heating unit and attractant tank of the gear shown in Figure 1; Figure 3 is a perspective view of another possible gear assembly according to the present invention.

The insect trap shown in part in Figures 1 and 3 and Figure 2 comprises an electric heating unit 1, a cylindrical bowl or sleeve part 2, a lure container 3 and a lining part 4 to which a sticky substance (not shown) is attached to catch insects from the bowl or sleeve. -sex. The heater unit 1 comprises an electrical element inside the housing 5 (not in the drawing). The housing has a plurality of openings 6 and above the electrical element there is a grid 7 on top of which is a circular plate-like attractant 3 made of absorbent paper impregnated with absorbent. Two protrusions 8 and 9 protrude from the upper corners of the housing 5 to position the sleeve 2 in position.

The sleeve part 2 shown in Fig. 1 is rectangular in diameter and completely open at the bottom. At its apex there is an inwardly conical opening 10 61605. Figure 3 shows a cup-shaped sleeve part. Inside the sleeve part there is a lining part 4 to which the sticky substance is attached (not in the drawing) and which can either be detached on the lattice 7 or be connected or otherwise attached to the sleeve part 2.

When the power is turned on and the heater unit has warmed up, an air flow is generated which passes through the openings 6 and the grid 7, over the attractant container, through the lining part 4 and as shown in Fig. 1 into the atmosphere surrounding the opening 10. With the air flow, the attractant vapors spread out of the sleeve part 2. The attractant used in each case attracts flying insects which are typically susceptible to it, which pass through the opening 10 inserted into the trap and get stuck in the sticky substance attached to the lining part 4 (adhesive: HYVIS-200). When a cup-shaped sleeve part is used, as in Fig. 3, the air flow over the cup 4 enters the surrounding atmosphere under the influence of air passing through it. Lure fumes travel with the air flow out of the top of the bowl. Insects susceptible to the bait used in each case go into the trap and get stuck in the sticky substance attached to the lining part 4.

In the gears shown in the drawings, the sticky substance is attached to the liner, and it has been found to be the easiest to make the liner of some easily disposable material so that it can be replaced with a new one when it is full of dead insects.

In other possible designs, the sleeve part, or the lining part, when used, can be combined with the lure container so that the lure container is either inside the sleeve part or lining part or supported on the bottom of the sleeve part or lining part next to or near the heating unit.

The insect trap of the present invention can in practice also be sold as an accessory package for existing insect pest heaters. These heaters, for example for destroying mosquitoes, work in such a way that the mosquito repellent placed on top of the heater evaporates under the influence of warm air.

It is clear that the part containing the sticky substance together with the attractant container can be easily fitted with the above-mentioned heater; ', in which case an accessory kit comprising the following parts is used: 6 61605 - a sleeve part through which air flow can be passed; - a container of attractant, from which the attractant evaporates under the influence of the air flow and travels with it to the surrounding atmosphere; a sticky substance to be attached to the inner surface of the sleeve part or any part to be inserted inside the sleeve part.

The accessory package may have a sleeve part made of thin cardboard or cardboard, which is a flat blank and can be bent into the desired shape.

As discussed above, fly insects fly over a light rather than a dark target, and therefore the sleeve portion and its liner portion could be made of some transparent material. However, the sleeve becomes more beautiful if it is made of an opaque material, so that the outer surface of the sleeve is warm or dark in color and the inner surface (as well as the lining part of the sleeve when used) is light. Further, the bottom of the sleeve can be made of a transparent material to illuminate the inner surface of the sleeve. The heater unit can also be made of a transparent or light material, or a transparent wall can be placed around and above its grid, which together with the sleeve forms a transparent base for the sleeve.

As mentioned above, one of the advantages of the present invention is that no chemical insecticides are required. However, it may sometimes be advantageous to use insecticide as an adherent inside the sleeve.

The operation of the insect trap of this invention is illustrated by the following experiment:

The gear according to Figures 1 and 2 was placed in a room with a volume of 28 m3, maintained at a temperature of 23 ° C (-2 ° C), a relative humidity of 60% (-5%) and ventilated three times an hour. As the attractant, (Z) -9-tricocene and (Z) -9-sleepwicene, which is an attractant to houseflies (Musca domestica), were mixed in a weight ratio of 7: 3. 10 mg of this mixture was added to a piece of filter paper, and this served as a decoy tank.

The trap was placed on a transparent table 0.7 m above the floor, and the room was allowed to fly freely • 2-3 day old milk-fed houseflies of both females and males.

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Three hours after entering the room, the number and sex of trapped and free flies were recorded. The experiment was repeated several times. The results are in the following table.

Experiment Used as a gel after 5 hours Room temperature Pa.ten_lu] am.

Male Female Male Female catch s ^ ° 1 15 4 60 25 53 24.0 2 11 9 100 <56 80 25.2 3 19 1 84 100 85 24.0 4. 14 8 100 25 73 25.0 5 10 13 100 69 83 23.5 6 19 3 84 33 77 20.3 7 16 7 8l 29 65 20.2 Catch as a percentage of the total number of flies used 86 47 73 23.2

The results in the table show that, on average, 70% of the free-flying housefly population was caught.

When no attractant was used, the yield was 9%, and when the heater was not in operation, the yield was 0%.

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