Genetic variability of Rickettsia spp. in Dermacentor and Haemaphysalis ticks from the Russian Far East

Igolkina, Yana; Рар, В. А.; Высочина, Н. П.; Иванов, Л. И.; Tikunov, Artem; Pukhovskaya, N. M.; Epikhina, Tamara; Golovljova, Irina; Tikunova, Nina

doi:10.1016/j.ttbdis.2018.07.015

Cited by 32 publications

(19 citation statements)

References 38 publications

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“…( 2008 ) D Russia Igolkina et al. ( 2018 ) R. heilongjiangensis Far Eastern spotted fever P China Sun et al. ( 2015 ) (review) R. sibirica North Asian/Siberian tick typhus P Russia Korshunova ( 1967 ) D Russia Shulunov et al.…”

Section: Resultsmentioning

confidence: 99%

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Vectors of disease at the northern distribution limit of the genus Dermacentor in Eurasia: D. reticulatus and D. silvarum

et al. 2020

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The two ixodid tick species Dermacentor reticulatus (Fabricius) and Dermacentor silvarum Olenev occur at the northern distribution limit of the genus Dermacentor in Eurasia, within the belt of 34−60 • N latitude. Whilst the distribution area of D. reticulatus extends from the Atlantic coast of Portugal to Western Siberia, that of D. silvarum extends from Western Siberia to the Pacific coast. In Western Siberia, the distribution areas of the two Dermacentor species overlap. Although the two tick species are important vectors of disease, detailed information concerning the entire distribution area, climate adaptation, and proven vector competence is still missing. A dataset was compiled, resulting in 2188 georeferenced D. reticulatus and 522 D. silvarum locations. Up-to-date maps depicting the geographical distribution and climate adaptation of the two Dermacentor species are presented. To investigate the climate adaptation of the two tick species, the georeferenced locations were superimposed on a high-resolution map of the Köppen-Geiger climate classification. The frequency distribution of D. reticulatus under different climates shows two major peaks related to the following climates: warm temperate with precipitation all year round (57%) and boreal with precipitation all year round (40%). The frequency distribution of D. silvarum shows also two major peaks related to boreal climates with precipitation all year round (30%) and boreal winter dry climates (60%). Dermacentor silvarum seems to be rather flexible concerning summer temperatures, which can range from cool to hot. In climates with cool summers D. reticulatus does not occur, it prefers warm and to a lesser extent hot summers. Lists are given in this paper for cases of proven vector competence for various agents of both Dermacentor species. For the first time, the entire distribution areas of D. reticulatus and D. silvarum were mapped using georeferenced data. Their climate adaptations were quantified by Köppen profiles.

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Section: Resultsmentioning

confidence: 99%

“…( 2007 ) Candidatus R. tarasevichiae Unnamed rickettsiosis D Russia Igolkina et al. ( 2018 ) Candidatus R. gannanii Y27 D China Han et al. ( 2018 ) Candidatus R. tibetani D China Han et al.…”

Section: Resultsmentioning

confidence: 99%

Vectors of disease at the northern distribution limit of the genus Dermacentor in Eurasia: D. reticulatus and D. silvarum

et al. 2020

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“…Infection with other pathogens has also been detected, including severe fever with the thrombocytopenia syndrome virus (Meng et al 2015), Rickettsia spp. (Igolkina et al 2018) and Babesia spp. (Hamšíková et al 2016;Rybářová et al 2017).…”

Section: Introductionmentioning

confidence: 99%

First record of Haemaphysalis concinna (Acari: Ixodidae) in Lower Silesia, SW Poland

et al. 2019

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Haemaphysalis concinna Koch is one of 19 species of the genus Haemaphysalis which has been reported in the Palearctic region. In Europe, the presence of H. concinna ticks has been reported in numerous countries. In Poland, to date, the precise occurrence of H. concinna was known only from one site in the northwestern region. This paper shows that H. concinna ticks can be considered a typical example of the tick fauna occurring in Lower Silesia, SW Poland. Tick monitoring was conducted using a standard flagging method in 24 sites in the various forest types of Lower Silesia. Among 1622 host-seeking ticks collected, H. concinna accounted for 2.7%. From the collected H. concinna there were: 25 (58.1%) larvae, 15 (34.9%) nymphs, 1 (2.3%) female, and 2 (4.7%) males. The presence of H. concinna was confirmed in 6 out of 24 tested sites in fresh mixed broadleaf forests, fresh mixed coniferous forests and in pastures.

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“…By using cell cultures, rickettsiae can be detected 48 to 72 h after inoculation by the infected tick. This technique is crucial for identifying new species enabling genetic descriptions, physiological On the right-the state of knowledge in 2019 [1,4,[17][18][19][20][21][22][23][24][25][26][27][28][29][30][31]33,35,36,38,39,[41][42][43][44][45][46][47]56,.…”

Section: Diagnosticsmentioning

confidence: 99%

Expansion of Tick-Borne Rickettsioses in the World

Piotrowski

Rymaszewska

2020

Microorganisms

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Tick-borne rickettsioses are caused by obligate intracellular bacteria belonging to the spotted fever group of the genus Rickettsia. These infections are among the oldest known diseases transmitted by vectors. In the last three decades there has been a rapid increase in the recognition of this disease complex. This unusual expansion of information was mainly caused by the development of molecular diagnostic techniques that have facilitated the identification of new and previously recognized rickettsiae. A lot of currently known bacteria of the genus Rickettsia have been considered nonpathogenic for years, and moreover, many new species have been identified with unknown pathogenicity. The genus Rickettsia is distributed all over the world. Many Rickettsia species are present on several continents. The geographical distribution of rickettsiae is related to their vectors. New cases of rickettsioses and new locations, where the presence of these bacteria is recognized, are still being identified. The variety and rapid evolution of the distribution and density of ticks and diseases which they transmit shows us the scale of the problem. This review article presents a comparison of the current understanding of the geographic distribution of pathogenic Rickettsia species to that of the beginning of the century.

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Genetic variability of Rickettsia spp. in Dermacentor and Haemaphysalis ticks from the Russian Far East

Cited by 32 publications

References 38 publications

Vectors of disease at the northern distribution limit of the genus Dermacentor in Eurasia: D. reticulatus and D. silvarum

Vectors of disease at the northern distribution limit of the genus Dermacentor in Eurasia: D. reticulatus and D. silvarum

First record of Haemaphysalis concinna (Acari: Ixodidae) in Lower Silesia, SW Poland

Expansion of Tick-Borne Rickettsioses in the World

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