DOI  10.25732/PM.2020.112.4.001

Sarcoptes scabiei (Acariformes: Sarcoptidae): susceptibility to scabicides

Y. V. Lopatina 1,2,

T. V. Sokolova 2,

A. P. Malyarchuk 3

1 - Lomonosov Moscow state University, Russia;

2 - Scientific Research Disifectology Institute of Rospotrebnadzor Moscow, Russia;

3 - Medical Institute of continuing education MOSCOW state University of food production (IMST MGUPP), Moscow, Russia.

Scabies mite or itch mite Sarcoptes scabiei L. is one of the most widespread and common specific parasites of humans. The resistance of S. scabiei micropopulations to lindane (organochlorine pesticides), ivermectin (macrocyclic lactones), benzylbenzoate (esters), crotamiton (amides) was established. The weak tolerance to permethrin (pyrethroids) manifested in increasing of survival time at contact with inseticide was shown. Some mechanisms of scabies mite resistance were described. In Russia, S. scabiei is susceptible to applied scabicides (permethrin, benzylbenzoate etc.). Cases of inefficiency of scabicides can be caused by features of the structure of the burrows: lack of openings in a top of burrows of non-fertilized females, burrows depth.

Keywords: Sarcoptes scabiei, scabicides, Resistance

page 5-7

DOI  10.25732/PM.2020.112.4.002

About treatment against ticks in natural biotopes

M. B. Akhmetshina, N. I. Shashina, Doctor of Biology, O. M. Germant, Scientific Research Disinfectology Institute of Pospotrebnadzor, Nauchny pr., 18, Moscow, 117246

The use of acaricides for the treatment of natural biotopes in order to eliminate populations of ixodid ticks continues to be a necessary direction of nonspecific prevention of dangerous natural-focal infec-tions. The article contains a brief description of the experience of using insecticoacaricidal agents for tick-borne treatments in natural biotopes in different countries. The results of a three-year survey of 48 subjects of the Russian Federation, endemic for tick-borne viral encephalitis, are reported. The cases of wrongful use of insectoacaricids and other means for treatment of objects in some regions of the country are discussed. Recommendations on rotation of means based on substances with different mechanisms of action for tick-borne treatments in order to prevent the development of tick-borne populations resistance are given. Among insecticoacaricids permitted for use on the territory of the Russian Federation, currently any ones with insufficient efficacy aren’t found.

Keywords: tick-borne treatments, ixodid ticks, tick-borne infections

page 8-11

DOI 10.25732/PM.2020.111.3.003  

Detection of the tropical bed bug in Russia

Kseniya Sergeyevna Krivonos, Mikhail Anatolievich Alekseev, PhD in biological sciences, Svetlana Aleksandrovna Roslavtseva,Doctor of biology, Professor Scientific Research Disinfectology Institute,

Moscow, Nauchnyy proyezd, 18

The presence of tropical bed bug on the territory of the Russian Federation has been confirmed. The populations of С. hemipterus from St. Petersburg and Moscow are resistant to cypermethrin.

Keywords: Cimex hemipterus, distribution in Russian cities, insecticide resistance.

page 11-23

  DOI  10.25732/PM.2020.112.4.003

Study of insecticide sensitivity of larvae of invasive mosquito species Aedes (Stegomyia) aegypti and Aedes (Stegomyia) albopictus

A. I. Frolova, S. A. Roslavceva, M. A. Alekseev

Scientific Research Disinfectology Institute of Pospotrebnadzor, 18 Nauchniy proezd. Moscow 117246, Russian Federation

Comparative susceptibility to insecticides in mosquito of larvae of invasive mosquito species from populations of Aedes aegypti and Ae. albopictus that are vectors of arboviral fevers was studied. Diagnostic concentrations for the detection of resistance to insecticides in populations of Ae. albopictus from the Russian Black Sea coast of Caucasus were calculated.

Keywords: mosquitoes, larvicides, diagnostic concentrations, resistance, the Russian Black Sea coast of Caucasus

page 14-18

DOI  10.25732/PM.2020.112.4.004

 Sanitary condition of objects of the environment of the Astrakhan region for 2014–2018

R. S. Arakelyan 1 – Candidate of Medical Sciences, V. A. Irdeeva 1, G. L. Shendo 2, Yu. B. Salina 3,

S. R. Saltereeva 1, T. V. Nikeshina 1, P. S. Lendova 1, A. M. Gadzhieva 1

1 - Astrakhan State Medical University

2 - Center for Hygiene and Epidemiology in the Astrakhan Region

3 - State Center of Agrochemical Service "Astrakhan"

In the complex of measures for the prevention of parasitic diseases among the population, the leading place is taken by the protection and improvement of the environment from their pathogens. Conducting sanitary-parasitological monitoring of environmental objects, as a factor in the transmission of parasitoses, provides for the indication of pathogens and the determination of the degree of contamination of various substrates, in particular, soil. Soil and sand are the most epidemiologically significant substrates for geohelminthiasis, in which, under favorable climatic conditions, geohelmintic eggs persist for a long time, develop and reach the invasive stage, contributing to the spread of parasitic diseases [3].

Keywords: sanitary-parasitological studies, soil, water, flushing from hard surfaces, Strongilid larvae, Ascaris eggs, toxocar eggs, helminth eggs and larvae

page 19 - 25

DOI  10.25732/PM.2020.112.4.005

 Epidemiological characteristics of West Nile fever in the Astrakhan region in 2005 to 2018

V. A. Irdeeva 1, N. N. Nikeshina 2, A. I. Boldyreva 2, G. L. Shendo 3, A. R. Azaryan 2, N. R. Bedlinskaya 1, L. E. Kuznetsova 1, I. D. Gladkiy 1

1- FGBOU VO «Astrakhan state medical University» of the Ministry of health of Russia, 414000,

Astrakhan, ul. Bakinskaya, 121

2 - Office of the Federal service for supervision of consumer protection and human welfare, 414057,

Astrakhan, St. Nicholas Ostrovsky, 138

3 - FBUZ «Center of hygiene and epidemiology in the Astrakhan region», 414057, Astrakhan, ul. Kirov, 89

In recent decades, the world, including Russia, has seen major outbreaks and sporadic incidence of West Nile fever. The epidemiological significance of the fever is determined by the severity of the clinical course with the defeat of the Central nervous system and mortality from 2 to 14%, a large proportion of erased forms of infection with Virology, the lack of specific treatment and prevention, the presence of endemic areas in Asia and Africa.At present, the West Nile virus area has expanded and natural foci of this arbovirus infection have become more active, due to the adaptation of West Nile virus to a wide range of birds, blood-sucking arthropods, some mammals, as well as seasonal bird migrations and transcontinental transfer of the fever pathogen from endemic countries to natural biocenoses [5].The problem of West Nile fever is relevant for the southern Federal district (Volgograd, Astrakhan, Rostov regions, Krasnodar territory, the Republic of Kalmykia) due to the large outbreaks and registration of sporadic morbidity [3].

Keywords: West Nile fever, West Nile virus, arbovirus infection

page 26 - 31

DOI  10.25732/PM.2020.112.4.006

Aspects of production and control of microcapsulated insecticide compositions. I. Determination of particle size

A. I. Lvovsky, senior researcher K. A. Bolshakov Chair of Chemistry and Technology of Rare and Scattered Elements, Nanoscale and Composite Materials, M.V. Lomonosov Institute of Fine Chemical Technologies, MIREA –Russian Technological University, 86, Vernadskogo Pr., Moscow 119571, Russia

L. A. Nosikova, Ph.D. (Chemistry), senior researcher A. N. Frumkin Institute of Physical Chemistry and Electrochemistry of the Russian Academy of Sciences(IPCE RAS), 31, Leninsky Pr, Moscow, 119991, Russia; associate professor M. V. Lomonosov Institute of Fine Chemical Technologies, Russia Technological University (86, Vernadskogo Pr., Moscow, 119571, Russia)

A. N. Kochetov, Ph.D. (Chemistry), Senior Lecturer, A. N. Reformatsky Chair of Inorganic Chemistry, M. V. Lomonosov Institute of Fine Chemical Technologies, MIREA – Russian Technological University, 86, Vernadskogo Pr., Moscow 119571, Russia

The possibilities of determining the particle size in commercial and experimental compositions produced using the technology of microencapsulation of insecticidal substances are considered. Various building blocks – natural lipids (of animal and plant origin) and synthetic polymeric materialswere used as capsuleformers, while different classes of organic compounds – pyrethroid and organophosphorus derivativeswere considered as encapsulated  insecticidal substances. The evaluation of particle sizes in the working solutions of microencapsulated insecticidal means. It is established that for the correct determination of the particle size it is necessary to dilute the initial compositions to concentrations below the set values for the working solutions. The range of particle size, revealed in the course of the study, allows us to refer all the considered compositions really to the microcapsulated ones. We believe it is necessary for the registration of new microencapsulated funds to implement not only control their residual effect on different surfaces and, optionally, monitoring of particle size, because their effectiveness and, perhaps, Toxicological characteristics, certainly, will not equally change the size of the capsules, and thus information on the size and fractional composition will serve as an important characteristics of these formulations.

Keywords: microencapsulated agents, insecticidal substances, particle size determination, pest control, active substance

page 34-41