RU2077199C1 - Food toxic bait for synanthropic coackroach - Google Patents

Abstract

FIELD: sanitary epidemiology. SUBSTANCE: proposed food toxic bait has insecticide, regulator of insect development, food attractant and vehicle. Insecticide - permethrin or deltamethrin, or cypermethrin, or neopinamine, or chlorofos, or dibrom, or trolen, or dichlor; regulator of insect development - substance of juvenile hormone analog or inhibitors of chitin biosynthesis; food attractant - sunflower oil; vehicle - paraffin and wheat dry bread crumble taken at the definite ratio of components. EFFECT: enhanced effectiveness of bait. 2 tbl

Description

 The invention relates to means of controlling domestic insects, in particular with anthropogenic cockroaches.

 One of the promising areas in the integrated cockroach control system is the development and use of solid forms of food toxic baits (PTP), designed to regulate the number of cockroaches, and in some cases the destruction of their populations.

 Known food toxic bait [1] for combating arthropods, containing 0.05-1 wt. organophosphorus, organochlorine, carbamate or pyrethroid insecticide, not less than 66 wt. food filler (sugar and / or protein food product), a surfactant (for example, alkaline or ammonium salts, aryl, alkylaryl or ligninsulfon-1, etc.), which gives the bait hygroscopic properties. In PTP, synergists, preservatives, dyes can be introduced.

 The disadvantage of this PTP is the relatively low effectiveness of the action (the average number of dead insects during the control time). This is due to the low rate of residual insecticidal action (the period during which the death of at least 50% of insects is ensured) and insufficient due to the repellency of the composition by the eating of cockroaches, which does not provide an insecticidal effect.

 Another disadvantage is the high cost due to the use of expensive surfactants and the need for frequent replacement of bait.

 Known food toxic bait 2, containing as a toxic substance an insect development regulator (PPH) an analogue of juvenile hormone (e.g. hydroprene, metoprene, etc.) and an inhibitor of chitin synthesis (e.g. diflubenzuron, triflubenzuron) in an amount of 0.01-2 wt. dextrin filler in an amount of 10-99 wt. and food attractant - vegetable oil in an amount of not more than 10 wt. Functional additives, for example, preservative, antioxidant, etc. can be included in the composition of the bait.

 The specified PTP is attractive, it affects the larvae of cockroaches of different ages. Although its use does not cause direct death of the larval phase and imago, however, after 1-2 generation of insects it leads to a sterilizing effect.

 The main disadvantage of this anti-TB drug is the long-term effect on cockroaches, which leads to the long-term existence of their colony after treatment with the drug, which is unacceptable at such facilities as medical institutions, computer installations, communication systems, etc. In addition, PTP is unstable during storage, which leads to the need for its frequent replacement and, as a result, to a rise in price.

 The prototype of the invention is a food toxic bait [3] containing as a toxic substance a mixture of insecticide (propetamphos) and PPH from the class of analogues of juvenile hormones (hydroprene), aluminosilicate filler, ethylene glycol attractant, functional additive (disintegrant) silicon dioxide in the following ratio of components, wt .

propetamphos (technical, 90%) 1.33
(RS) hydroprene (technical, 88%) 0.14
aluminosilicate 88.53
ethylene glycol 5.0
silica 5.0
The use as a toxic substance of a mixture of PPH and an insecticide as a part of harmful insect control agents is currently considered one of the most promising, but poorly developed areas of applied entomology. The given composition of the anti-TB drug allows fighting cockroaches located both in the larval and in the imaginal phases of development.

 The disadvantage of the prototype PTP is the low efficiency due to the short residual effect due to the partial blocking of the toxic effects of propetamphos and hydroprene by the components of the mixture and low eatability due to the repellency of the composition.

 In addition, the high volatility of propetamphos in the proposed mixture causes the toxicity of the drug for warm-blooded.

 The present invention allows to expand the range of anti-TB drugs based on a mixture of insecticide and PPH and to increase efficiency by increasing the duration of the residual effect and increasing the eatability of the bait.

 This result is achieved by the fact that the known food toxic bait, including a toxic substance based on an insecticide and an insect development regulator, a food attractant and a filler, contains permethrin or deltamethrin, or cipremetrin, or neopinamine, or chlorophos, or DDVF or dibromo as an insecticide. or trolene, or dichloro, as a regulator of insect development, hydroprene or methoprene, or epoxene, or phenoxycarb from the class of analogues of juvenile hormones, or diflubenzuron, or triflubenzuron, or teflubens a ron from the class of chitin synthesis inhibitors, or a mixture of insect development regulators taken from the compounds of the juvenile hormone analog class with an insect development regulator taken from the above compounds of the chitin synthesis class, it contains sunflower oil as a food attractant, and paraffin as a filler and wheat cracked crumbs in the following ratio of components, wt.

insecticide 0.2-5.0
a regulator of the development of insects from the class of analogues of juvenile hormones or from the class of inhibitors of chitin synthesis, or a mixture of 0.15-0.5
sunflower oil 3.0-7.0
paraffin 30.0-40.0
wheat breadcrumbs rest
The invention consists in the following.

 The population of synanthropic cockroaches living in the premises, depending on the action of many environmental factors, is different both in species, sex and age, and in the ratio of larval and imaginal phases. In addition, in synanthropic cockroaches, the time intervals between periods sensitive to the action of toxic drugs in the larval stages, depending on the species, vary significantly.

 In this regard, it is necessary to develop anti-TB drugs in which a toxic substance is a mixture of PPH with an insecticide and cockroach mortality is ensured due to abnormalities in the development of the imaginal and larval phases for a long time.

 For this, it is necessary that there is no mutual blocking of the action of the components, stability of the composition and resistance to environmental factors must be ensured. In addition, the food attractant should ensure the maximum attraction of insects and contribute to the successful eating of the bait. PTP should be minimally toxic to warm-blooded animals and be made from available non-deficient raw materials.

 Proposed, according to the invention, PTP satisfy the above requirements. Moreover, the use of mixtures of the listed compounds related to PPH with the listed insecticides as a toxic substance not only does not block the action of each component, but even an increase in the duration of their action is observed due to a combination of effects characteristic of each of the groups of drugs.

 The use of sunflower oil as an attractant and paraffin with wheat bread crumbs as a filler provides high bait eatability by all types of cockroaches (red, black, American, ashy), high stability during long-term (more than a year) storage.

 Due to the use of paraffin, the proposed anti-TB drugs are characterized by low volatility of toxic components and, therefore, low toxicity to warm-blooded animals.

 With the introduction of PTP less than 0.2 wt. insecticide and less than 0.15 wt. PPH drug is ineffective. The introduction of an insecticide of more than 5.0 wt. and PPH more than 0.5 wt. leads to an increase in PTP repellency and its cost increase.

 When the content of sunflower oil is less than 3.0 wt. there is insufficient attractiveness and eatability of PTP. When the content of sunflower oil is more than 7.0 wt. and paraffin less than 30.0 wt. PTP becomes loose, crumbles, which leads to the need for its frequent replacement. The introduction of PTP paraffin more than 40.0 wt. reduces efficiency by blocking the action of toxic components and reducing the eatability of the bait.

 The use of wheat crumbs along with paraffin as a filler increases the consumption of anti-TB drugs by cockroaches.

 Execution example.

 Prepare the necessary weight quantities of the components included in the PTP.

Toxic substance (insecticide and PPH) is dissolved in warmed up to 50-60 ^o With sunflower oil. Paraffin is melted and mixed with wheat cracker, the particle diameter of which is 1-2 mm. Preventing cooling, an oily solution of a toxic substance is introduced into the hot mass and mixed thoroughly. Briquettes (or tablets, or granules, etc.) are formed from the resulting mixture, 1 x 1 x 2 cm in size, and cooled.

 The effectiveness of the toxic effect was evaluated using the method of group feeding of insects. The number of repetitions for each experiment is 5. In each group, 40 insects were present, including 20 adults (10 males and females) and 20 larvae (10 individuals of younger and older ages).

 The following components were used to prepare the toxic substance of the proposed anti-TB drugs: technical permethrin 95-97% from FMC (USA) or domestic TU 113-04-3-458-83, cypermethrin 96% FMC (USA); neopinamine 90% Sumitomo (Japan); technical deltamethrin 88% Roussel-Uclaff (France); dichloride TU 6-15-853-74; DDVF Standard SV 19-47-74; dibroma 97% Bayer; trolene 95% (Dow Chemical); chlorophos 88% TU 6-04-29-81; Hydroprene 97% Loekon (USA); metoprene 98% Loekon (USA) and 97% (CSFR); efoxen 95% (Estonia); phenoxycarb 96% Hoffman-Laroche (Switzerland); diflubenzuron (dimilin) Sandoz (Switzerland); triflubenzuron (alcystine) Bayer (Germany); teflubenzuron (nomolt) Shell (England).

 In the examples of execution, the concentration of the components in terms of pure substance is given. The compositions of the PTP and the results of their tests are shown in tables 1 and 2, respectively.

 From the above examples it is seen that the effectiveness of the freshly prepared PTP lies in the range of 60-98% for the control time of 3 days and 100% for the control time of 7 days. When using PTP after storing them for several months in a room environment (without special vacuum packaging), the effectiveness of the action decreases, but in all cases the duration of the residual action exceeds 12 months. It should be noted that the use of packaging that isolates it from the environment for storing PTP significantly increases the residual effect, for example, PTP according to examples NN 1 and 2 had a residual action of more than 2 years.

 All the proposed toxicological compositions for warm-blooded animals belong to the IY hazard class according to the hygienic classification of pesticides (GOST 12.10.07-76).

 Thus, the results allow us to recommend the proposed PTP as an effective means of suppressing the population of synanthropic cockroaches. Their use will allow, without additional treatments with contact preparations, to suppress the dispersion of the living or residual cockroach colony, as well as significantly reduce the amount of toxicants introduced into the urban exystem.

Sources of information
1. Application of France N 75 01279, CL A 01 N 17/14, publ. 08/13/76.

 2. US Patent N 5096710, cl. A 01 N 25/08, publ. 03/17/92.

 3. PCT application 89/09543, cl. A 01 N 57/28, publ. 10.19.89 prototype.

Claims (1)

1 Food toxic bait for synanthropic cockroaches, including an insecticide, insect development regulator from the class of analogues of juvenile hormones hydroprene, food attractant and excipient, characterized in that it contains permethrin or deltamethrin or cypermethrin or neopinamine or chlorophos or DDVF, or dibrom, or trolene, or dichloro, as a regulator of insect development, it contains a substance from the class of analogues of juvenile hormones metoprene, or epoxene, or phenoxycarb, or a substance from the class of ing chitin synthesis inhibitors diflubenzuron, or triflubenzuron, or teflubenzuron, as a food attractant, it contains sunflower oil, and paraffin and wheat crumbs as a filler in the following ratio of ingredients, wt. 3 Permethrin, or deltamethrin, or cypermethrin, or neopinamine, or chlorophos or DDVF, or dibrom, or trolene, or dichloro7 0.2 5.03 Hydroprene, or methoprene, or epoxene, or phenoxycarb, or diflubenzuron, or triflubenzuron, or teflubenzuron7 0.15 0.53 Sunflower oil 7 3 73 Paraffin 7 30 403 Wheat cracker th kroshka7 rest

Images