Рыжий таракан Blattella germanica Linnaeus, 1767 является наиболее распространенным в помещениях синантропным насекомым, имеющим гигиеническое и медицинское значение как механический переносчик и резервуар многих патогенных микроорганизмов и грибов [1, 2, 3, 4]. В медицинских организациях положение усугубляется нали-37

The spectrum of resistance to various groups of insecticides of several laboratory strains of German cockroach, Blattella germanica, from different geographically remote regions of Russia is presented. Studies have been carried out on the synergistic effects of desynchronized use of piperonyl butoxide (PBO), S, S, Stributylphosphorotrithioate (DEF), diethyl maleate (DEM) and verapamil (Ver) in combination with 5-7 concentrations of acetamiprid to determine possible resistance mechanisms. The studies were performed on three strains (M1, Moscow; OBN, Obninsk; U1, Yekaterinburg) in comparison with the standard laboratory susceptible strain S-NIID. Acetamiprid resistance was reduced using PBO, DEF, and Ver which indicates the involvement of P450 monooxygenases, esterases, and ABC transporters in this phenomenon. DEM turned out to be less effective. Insecticide multi-resistance is widespread in German cockroaches in Russia.

When eating poisoned baits based on 0.1–1.0 % pyriproxyfen, within 6 weeks killed up to 50 % of German cockroaches of the S-NIID strain, and 12 % of cockroaches of the OBN strain. The resulting oothecae turned out to be defective and the second generation of cockroaches did not hatch. Morphological changes consisted were in the deformation of the wings (rudimentary, curved, twisted) and in the inability of the larvae to transform into adults. In experiments with an alternative food, similar results were obtained, females formed more oothecae, but the emergence of new generation larvae was not recorded. The consumption of pyriproxyfen-based baits by Pharaoh ant led to the elimination of colonies. A significant decrease in brood number was recorded at 3–6 weeks, and complete death of brood was observed at 6–8 weeks in all treated colonies. The absence of brood can be explained by both mortality as a result of developmental disorders and the cessation of egg laying by queens. Keywords: insect growth regulators, German cockroach, Pharaoh ant, pyriproxifen, hydroprene.

The insecticidal properties of proinsecticides fipronil, indoxacarb, and methomyl were studied against the colonies of Pharaoh ant. It was found that sugar food baits based on fipronil or indoxacarb are effective against colonies of Pharaoh ant in the concentration ranges 0.001–0.1 % and 0.1–1.0 %, respectively. Baits based on 1 % methomyl are also highly effective. In the presence of alternative food, the mortality of workers and queens was reduced. The food attractiveness of ant baits should be increased by introducing honey, peanut butter, and other attractants. Keywords: proinsecticides, fipronil, indoxacarb, methomyl, baits, Pharaoh ant.

Тараканы Blattella germanica (L.) из Москвы (линия Bg-М1), Обнинска (Bg-ОБН) и Екатеринбурга (Bg-У1) проявляли среднюю резистентность к ФОС (показатель резистентности (ПР) к хлорпирифосу Bg-М1-13×, Bg-ОБН-15×, Bg-У1-18×) и чувствительность или слабую толерантность (ПР к пропоксуру-1,8×, 0,7×, 0,8×, соответственно). Механизмы резистентности исследовали топикальным методом с помощью ингибиторов различных систем детоксикации-монооксигеназ (ППБ), эстераз (ТБТФ), глутатион-S-трансфераз (ДЭМ) и АВС-транспортеров (верапамил)-в сочетании с 5-7 концентрациями инсектицидов. Устойчивость к ФОС и карбаматам была значительно снижена с помощью ТБТФ, что свидетельствует о значитеольном вкладе эстераз в резистентность тараканов к хлорпирифосу (коэффициент сиренгического действия (КСД) 38-146) и пропоксуру (КСД 2.5-8.0). Вклад других ферментных систем-монооксигеназ и глутатион-S-трансфераз, а также АВС-транспортеров был менее выражен.