Abundance of <i>Ixodes persulcatus</i> ticks in Komi Republic as a function of an air temperature

The sharp rising incidence of tick-borne encephalitis (TBE) in Komi Republic at the North-east of European Russia was recorded last decades. Tick-bite incidence also was grown. Rapid rise of TBE incidence growth and Ixodidae ticks depends on a number of factors, and the impact of climate change bein...

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Autores principales:	A. A. Tronin, N. K. Tokarevich, B. R. Gnativ
Formato:	article
Lenguaje:	RU
Publicado:	Sankt-Peterburg : NIIÈM imeni Pastera 2020
Materias:	tick-borne encephalitis tick-bite incidence ixodes persulcatus population climate change air temperature komi republic Infectious and parasitic diseases RC109-216
Acceso en línea:	https://doaj.org/article/d30fee6c415943b0b73ab900ac23f66d
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spelling	oai:doaj.org-article:d30fee6c415943b0b73ab900ac23f66d2021-11-22T07:09:53ZAbundance of <i>Ixodes persulcatus</i> ticks in Komi Republic as a function of an air temperature2220-76192313-739810.15789/2220-7619-2019-5-6-811-816https://doaj.org/article/d30fee6c415943b0b73ab900ac23f66d2020-02-01T00:00:00Zhttps://www.iimmun.ru/iimm/article/view/896https://doaj.org/toc/2220-7619https://doaj.org/toc/2313-7398The sharp rising incidence of tick-borne encephalitis (TBE) in Komi Republic at the North-east of European Russia was recorded last decades. Tick-bite incidence also was grown. Rapid rise of TBE incidence growth and Ixodidae ticks depends on a number of factors, and the impact of climate change being one of them. Ixodes persulcatus ticks is considered as a main vector of TBE in Komi. Our objective is to estimate the influence of air temperature change on the tickbite incidence and Ixodes persulcatus population in Komi. Komi Republic is located near the Polar circle where the northern frontier of Ixodes persulcatus ticks situated and we expected the growth of tick’s population. The number of Komi inhabitants seeking medical care after tick bites in 1992–2014 was considered. Gridded monthly air temperature data with grid size 0.5 degree were recalculated to temperature referred to Komi administrative units. The time series of annual number of tick victims from 1992 till 2014 and model air temperature from 1948 till 2016 for all Komi administrative units were compiled. We analyzed the data on tick-bite incidence in Komi administrative units in relation to changes in local annual average air temperature within the study area. The linear dependence of the tick-bite incidence on air temperature was established when of the tick-bite incidence is represented in logarithm form. The tick population depends not only on temperature but humidity, landcover and hosts. Described areas of Komi belong to humid climate, where precipitations exceed evaporation. Most of the Komi territory is covered by taiga with underwood, grass and bush. Hosts of the first and the major levels are represented by birds and rodents. The dependence of tick-bite incidence and temperature looks like “Malthus’s law”, but the development of population depends on temperature not on time. The exponential growth in the nearest future will ceased and the population will proceed to stable phase. Ticks population in Komi Republic is moving to the North and the air temperature determines the dynamics of population.A. A. TroninN. K. TokarevichB. R. GnativSankt-Peterburg : NIIÈM imeni Pasteraarticletick-borne encephalitistick-bite incidenceixodes persulcatuspopulationclimate changeair temperaturekomi republicInfectious and parasitic diseasesRC109-216RUInfekciâ i Immunitet, Vol 9, Iss 5-6, Pp 811-816 (2020)
institution	DOAJ
collection	DOAJ
language	RU
topic	tick-borne encephalitis tick-bite incidence ixodes persulcatus population climate change air temperature komi republic Infectious and parasitic diseases RC109-216
spellingShingle	tick-borne encephalitis tick-bite incidence ixodes persulcatus population climate change air temperature komi republic Infectious and parasitic diseases RC109-216 A. A. Tronin N. K. Tokarevich B. R. Gnativ Abundance of <i>Ixodes persulcatus</i> ticks in Komi Republic as a function of an air temperature
description	The sharp rising incidence of tick-borne encephalitis (TBE) in Komi Republic at the North-east of European Russia was recorded last decades. Tick-bite incidence also was grown. Rapid rise of TBE incidence growth and Ixodidae ticks depends on a number of factors, and the impact of climate change being one of them. Ixodes persulcatus ticks is considered as a main vector of TBE in Komi. Our objective is to estimate the influence of air temperature change on the tickbite incidence and Ixodes persulcatus population in Komi. Komi Republic is located near the Polar circle where the northern frontier of Ixodes persulcatus ticks situated and we expected the growth of tick’s population. The number of Komi inhabitants seeking medical care after tick bites in 1992–2014 was considered. Gridded monthly air temperature data with grid size 0.5 degree were recalculated to temperature referred to Komi administrative units. The time series of annual number of tick victims from 1992 till 2014 and model air temperature from 1948 till 2016 for all Komi administrative units were compiled. We analyzed the data on tick-bite incidence in Komi administrative units in relation to changes in local annual average air temperature within the study area. The linear dependence of the tick-bite incidence on air temperature was established when of the tick-bite incidence is represented in logarithm form. The tick population depends not only on temperature but humidity, landcover and hosts. Described areas of Komi belong to humid climate, where precipitations exceed evaporation. Most of the Komi territory is covered by taiga with underwood, grass and bush. Hosts of the first and the major levels are represented by birds and rodents. The dependence of tick-bite incidence and temperature looks like “Malthus’s law”, but the development of population depends on temperature not on time. The exponential growth in the nearest future will ceased and the population will proceed to stable phase. Ticks population in Komi Republic is moving to the North and the air temperature determines the dynamics of population.
format	article
author	A. A. Tronin N. K. Tokarevich B. R. Gnativ
author_facet	A. A. Tronin N. K. Tokarevich B. R. Gnativ
author_sort	A. A. Tronin
title	Abundance of <i>Ixodes persulcatus</i> ticks in Komi Republic as a function of an air temperature
title_short	Abundance of <i>Ixodes persulcatus</i> ticks in Komi Republic as a function of an air temperature
title_full	Abundance of <i>Ixodes persulcatus</i> ticks in Komi Republic as a function of an air temperature
title_fullStr	Abundance of <i>Ixodes persulcatus</i> ticks in Komi Republic as a function of an air temperature
title_full_unstemmed	Abundance of <i>Ixodes persulcatus</i> ticks in Komi Republic as a function of an air temperature
title_sort	abundance of <i>ixodes persulcatus</i> ticks in komi republic as a function of an air temperature
publisher	Sankt-Peterburg : NIIÈM imeni Pastera
publishDate	2020
url	https://doaj.org/article/d30fee6c415943b0b73ab900ac23f66d
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_version_	1718417945806241792

Abundance of <i>Ixodes persulcatus</i> ticks in Komi Republic as a function of an air temperature

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