DOI: 10.35411/2076-457X-2024-2-22-27
Disinfection Affairs № 2/2024, pp. 22-27
Efficacy of bait based on PfDNV densovirus against synanthropic cockroaches
K.S. Krivonos, O.Yu.Eremina, V.V. Olifer
Disinfectology Institute of the Center of Hygiene named after F.F. Erisman of Federal Service for Surveillance on Consumer Rights Protection and Human Wellbeing: 117246, Russian Federation, Moscow, Nauchniy proezd, 18a.
We present our own data on the effectiveness of insecticidal bait based on the densovirus of the smoky-brown cockroach Periplaneta fuliginosa (PfDNV) for German, American and Oriental cockroaches. On average, the mortality rate of German cockroaches was 70 % within 5 days of the experiment, which corresponds to the required indicator of bait effectiveness. The total mortality of males and females of Oriental and American cockroaches was below 70 %, which does not allow us to recommend this product for use against these species of cockroaches. It has been established that male German cockroaches are more susceptible to bait than females. A comparison of the mortality rates of German cockroaches in the absence of alternative food showed that the MAG and KR strains resistant to traditional insecticides do not differ from that of the susceptible S-NIID strain. Females of the DM strain died off 3 times longer than susceptible S-NIID females. In the presence of alternative food, a slowdown in the action of the bait was observed in females of the KR strain by 2.5 times and in DM by 4 times. Viruses are highly specific to their hosts and can lead to a significant reduction in the number of hosts. Bioinsecticides may be a necessary alternative in the control of resistant German cockroaches.
Keywords: densovirus PfDNV, synanthropic cockroaches, resistance.
Authors
Krivonos Kseniya Sergeevna – PhD in Biological Sciences; Senior Researcher of the Division of disinsection (with laboratory of entomology) of the Institute of Disinfectology of the Federal Scientific Center of Hygiene named after F.F. Erisman of the Rospotrebnadzor; Tel.: (495) 586-11-44 (ext. 1440), e-mail: Адрес электронной почты защищен от спам-ботов. Для просмотра адреса в вашем браузере должен быть включен Javascript.. ORCID ID: 0000-0003-4633-6645
Eremina Olga Yurevna – Doctor of Science in Biology; Leading Researcher of the Division of disinsection (with laboratory of entomology) of the Institute of Disinfectology of the Federal Scientific Center of Hygiene named after F.F. Erisman of the Rospotrebnadzor. ORCID ID: 0000-0002-8268-2230
Olifer Veronika Valentinovna – PhD in Biological Sciences; Leading Researcher of the Division of disinsection (with laboratory of entomology) of the Institute of Disinfectology of the Federal Scientific Center of Hygiene named after F.F. Erisman of the Rospotrebnadzor. ORCID ID: 0000-0002-4736-7905
Full-text is available in Russian
DOI: 10.35411/2076-457X-2024-2-22-27
Дезинфекционное дело № 2/2024, стр. 22-27
Mycoinsecticides for controlling the house fly, Musca domestica L. (Diptera: Muscidae)
K.S. Krivonos, O.Yu. Eremina, V.V. Olifer
Disinfectology Institute of the Center of Hygiene named after F.F. Erisman of Federal Service for Surveillance on Consumer Rights Protection and Human Wellbeing: 117246, Russian Federation, Moscow, Nauchniy proezd, 18a.
The review of foreign literature analyzes the effects of mycoinsecticides on the adults and larvae of the house fly. The time of death of 50 % of individuals at a high concentration of 1•109 conidia varies from 3.8 days for Beauveria bassiana and from 5.2 days for Metarhizium anisopliae. The time required to kill the host is usually 4–6 days for both species of fungi. Currently, more effective strains of fungi are developing in the world. Further increases in kill indices can be achieved by genetically modification of pathogen to accelerate its penetration through the cuticle. The susceptibility of house fly adults to sugar baits with B. bassiana conidia has been established. The reasons for differences in the effectiveness of B. bassiana against house fly larvae (from 0 % to 70 % mortality of larvae) are investigated, for example, variations in strain virulence, fungal cultivation method, conidial dose or concentration, fly instar, nutritional status of the host larvae, method of exposure, properties of the substrate for larval cultivation and differences in the susceptibility of fly cultures. Several mycoinsecticides assigned to control the house fly are produced abroad. Domestic developments are needed for use of entomopathogenic fungi against resistant flies in Russia.
Keywords: mycoinsecticides, entomopathogens, house fly, Beauveria bassiana, Metarhizium anisopliae.
Authors
Krivonos Kseniya Sergeevna – PhD in Biological Sciences; Senior Researcher of the Division of disinsection (with laboratory of entomology) of the Institute of Disinfectology of the Federal Scientific Center of Hygiene named after F.F. Erisman of the Rospotrebnadzor; Tel.: (495) 586-11-44 (ext. 1440), e-mail: Адрес электронной почты защищен от спам-ботов. Для просмотра адреса в вашем браузере должен быть включен Javascript.; ORCID ID: 0000-0003-4633-6645
Eremina Olga Yurevna – Doctor of Science in Biology; Leading Researcher of the Division of disinsection (with laboratory of entomology) of the Institute of Disinfectology of the Federal Scientific Center of Hygiene named after F.F. Erisman of the Rospotrebnadzor. ORCID ID: 0000-0002-8268-2230
Olifer Veronika Valentinovna – PhD in Biological Sciences; Leading Researcher of the Division of disinsection (with laboratory of entomology) of the Institute of Disinfectology of the Federal Scientific Center of Hygiene named after F.F. Erisman of the Rospotrebnadzor. ORCID ID: 0000-0002-4736-7905