Prevalence of Anaplasma and Ehrlichia species in Ixodes persulcatus ticks and small mammals from different regions of the Asian part of Russia

2008 ◽  
Vol 298 ◽  
pp. 222-230 ◽  
Author(s):  
Vera A. Rar ◽  
Natalya N. Livanova ◽  
Victor V. Panov ◽  
Irina V. Kozlova ◽  
Natalya M. Pukhovskaya ◽  
...  
Keyword(s):  
Small Mammals ◽  
Ixodes Persulcatus

scholarly journals Выявление различных видов риккетсий у иксодовых клещей, в крови людей и мелких млекопитающих на юге Западной Сибири и на Урале

2006 ◽  
Vol 5 ◽  
pp. 121-125
Author(s):  
Ya. P. Igolkina ◽  
N. V. Fomenko ◽  
N. N. Livanova ◽  
V. B. Astanin ◽  
L. A. Gosteeva ◽  
...  
Keyword(s):  
Small Mammals ◽  
Human Blood ◽  
Nested Pcr ◽  
Ixodes Persulcatus ◽  
Blood Samples ◽  
Rickettsia Helvetica ◽  
Rickettsia Slovaca ◽  
High Prevalence ◽  
Human Blood Samples ◽  
Rickettsia Sibirica

We investigated ticks, human blood samples, specimens of tissue and blood from small mammals using nested PCR. We de- tected high prevalence Rickettsia tarasevichiae and Rickettsia sp. RpA4 in samples of ticks Ixodes persulcatus and Dermacentor re- ticulatus, correspondingly. We observed DNA of pathogenic Rickettsia helvetica and Rickettsia slovaca in I. persulcatus and Der- macentor marginatus and DNA of Rickettsia sibirica in human blood and in blood and liver samples of small mammals.

scholarly journals Materials on Ixodes tick (Ixodidae) of the Khanty-Mansi Autonomous Okrug - Yugra

2017 ◽  
Vol 6 (2) ◽  
pp. 88-91
Author(s):  
Vladimir Pavlovich Starikov ◽  
Antonina Dmitrievna Mayorova ◽  
Ekaterina Sergeevna Sarapultseva ◽  
Kirill Alexandrovich Bernikov ◽  
Nikolay Vladimirovich Nakonechny ◽  
...  
Keyword(s):  
Small Mammals ◽  
Ixodid Ticks ◽  
Ixodes Persulcatus ◽  
Total Absence ◽  
Myodes Rutilus ◽  
Khanty Mansi Autonomous

The paper contains information about ixodid mites of the Khanty-Mansi Autonomous Okrug - Yugra, obtained during expedition work in 2006-2016. Ixodes persulcatus dominates in the structure of the population of ixodid ticks. The list of small mammals serving as feeders of ixodid ticks is indicated. The highest indices of occurrence and abundance of ixodid ticks were introduced for Myodes rutilus and Craseomys rufocanus (28,6 and 25,0%, 0,8 and 0,9 respectively). Researches in Nizhnevartovsk region in 2016 confirmed the opinion about total absence of ixodid mites on flooded part of the floodplain because of usual overflows. All ixodid ticks are registered in rodents and shrews on mainland part. The same feature in location of ixodid matis in 2013 was observed in surroundings of Khanty-Mansiysk city. The paper contains the information about distribution of ixodid ticks on feeders in Nizhnevartovsk region.

scholarly journals Tick-borne encephalitis virus isolates from natural foci of the Irkutsk region: clarification of the genotype landscape

2016 ◽  
Vol 61 (5) ◽  
pp. 229-234 ◽  
Author(s):  
O. V. Mel’Nikova ◽  
R. V. Adel’Shin ◽  
V. M. Korzun ◽  
Yu. N. Trushina ◽  
E. I. Andaev
Keyword(s):  
Small Mammals ◽  
Encephalitis Virus ◽  
Ixodes Persulcatus ◽  
Tick Borne Encephalitis ◽  
Irkutsk Region ◽  
High Virulence ◽  
Natural Foci ◽  
Tick Borne Encephalitis Virus ◽  
Relationship Of ◽  
Far Eastern

The Irkutsk region is the unique territory where all known subtypes of tick-borne encephalitis virus (TBEV) circulate. In the last years, the phenomenon of changes in TBEV subtypes (substitution of the Far-Eastern subtype by the Siberian one) was noted in some regions of the Russian Federation. The results of individual investigation of 11522 Ixodes persulcatus ticks and brain specimens from 81 small mammals collected in natural foci of the Irkutsk region during 2006-2014 are presented in the article. More than 60 TBEV strains have been isolated and studied by virological methods; E gene fragments (1193 b.p.) of 68 isolates have been typed. The majority of the strains (irrespective of subtype) were of high virulence for laboratory mice (LM) in case of both intracerebral and subcutaneous inoculation of virus. All isolates from warm-blooded small mammals and humans were of high virulence for LM, but placed in the same clusters of the phylogenetic tree with ticks collected in the same area. Tick-borne strains of different virulence also did not form separate clusters on the tree. Phylogenetic analysis showed that modern TBEV genotypic landscape of the studied territory is changing toward absolute predominance of the Siberian subtype (94.1%). This subtype is represented by two groups with prototype strains “Zausaev” and “Vasilchenko”. The “Vasilchenko” group of strains is spread on the whole territory under study; the strains of “Zausaev” group were isolated previously in the Irkutsk suburbs. The European subtype of TBEV circulates in natural foci of Pribaikalie permanently (at least 5% of the random sampling); the strains are of high virulence for LM. The Far-Eastern TBEV subtype was not found within the group of isolates collected in 20062014. The phylogenetic relationship of the strains under study had a higher correlation with the place of isolation than with the year or source.

Genetic diversity ofBabesiainIxodes persulcatusand small mammals from North Ural and West Siberia, Russia

Parasitology ◽  
2010 ◽  
Vol 138 (2) ◽  
pp. 175-182 ◽  
Author(s):  
V. A. RAR ◽  
T. I. EPIKHINA ◽  
N. N. LIVANOVA ◽  
V. V. PANOV
Keyword(s):  
Genetic Diversity ◽  
Small Mammals ◽  
West Siberia ◽  
18S Rrna Gene ◽  
Sensu Stricto ◽  
Babesia Microti ◽  
Rrna Gene ◽  
Ixodes Persulcatus ◽  
Novosibirsk Region ◽  
The Us

SUMMARYObjective.The aim of this work was to study the prevalence and genetic diversity ofBabesiainIxodes persulcatusticks and small mammals from Ural and Siberia in Russia.Methods.In total, 481 small mammals and 922 questing adultI. persulcatusfrom North Ural (Sverdlovsk region) and West Siberia (Novosibirsk region) were examined for the presence ofBabesiaby nested PCR based on the 18S rRNA gene.Results.Babesia microtiof the ‘Munich’-type was found in 36·2% of blood samples of the small mammals from the Sverdlovsk region andB. microtiof the ‘US’-type in 5·3% of the animals from the Novosibirsk region.BabesiaDNA was not detected in 133 analysedI. persulcatusfrom the Sverdlovsk region; however, it was found in 24 of 789 ticks from the Novosibirsk region. Three distinctBabesiaspecies were detected inI. persulcatus. B. microti‘US’-type was identified in 10 ticks,Babesiaclosely related toB. divergens/B. capreoliin 2 ticks, andBabesiaclosely related toB. venatorum(EU1) in 12 ticks.Conclusion.To our knowledge, this is the first detection ofBabesia sensu strictoinI. persulcatusticks and ofB. microtiinI. persulcatusin the Asian part of Russia.

Genetic variability of Anaplasmataceae circulating in small mammals and ticks in an Ixodes persulcatus/Ixodes trianguliceps sympatric area in Russian Siberia

2020 ◽  
Vol 11 (5) ◽  
pp. 101499 ◽  
Author(s):  
Vera Rar ◽  
Valeriy Yakimenko ◽  
Artem Tikunov ◽  
Marat Makenov ◽  
Tamara Epikhina ◽  
...  
Keyword(s):  
Genetic Variability ◽  
Small Mammals ◽  
Ixodes Persulcatus ◽  
Ixodes Trianguliceps

High prevalence of Babesia microti ‘Munich’ type in small mammals from an Ixodes persulcatus/Ixodes trianguliceps sympatric area in the Omsk region, Russia

2016 ◽  
Vol 115 (9) ◽  
pp. 3619-3629 ◽  
Author(s):  
Vera Rar ◽  
Valeriy Yakimenko ◽  
Marat Makenov ◽  
Artem Tikunov ◽  
Tamara Epikhina ◽  
...  
Keyword(s):  
Small Mammals ◽  
Babesia Microti ◽  
Ixodes Persulcatus ◽  
High Prevalence ◽  
Ixodes Trianguliceps

scholarly journals DETECTION OF BABESIA AND ANAPLASMATACEAE BACTERIA IN SMALL MAMMALS FROM IRKUTSK AND NOVOSIBIRSK REGIONS

2016 ◽  
Vol 1 (3) ◽  
pp. 37-41
Author(s):  
Козлова ◽  
Irina Kozlova ◽  
Лисак ◽  
Oksana Lisak ◽  
Панов ◽  
...  
Keyword(s):  
Small Mammals ◽  
Babesia Microti ◽  
Ixodes Persulcatus ◽  
Small Rodents ◽  
Tissue Samples ◽  
Candidatus Neoehrlichia Mikurensis ◽  
Novosibirsk Region ◽  
Irkutsk Region ◽  
Pcr Method ◽  
Neoehrlichia Mikurensis

Tissue samples from 228 small mammals captured from 2013 to 2015 in four districts of Irkutsk region and in one district of Novosibirsk region were examined for the presence of Anaplasmataceae bacteria and Babesia parasites by nested PCR method with subsequent sequencing of positive samples. In Ekhirit-Bulagatskiy District of Irkutsk region, Babesia microti DNA was found in 10.9 % of small mammals, Anaplasma phagocytophilum DNA – in 7.3 %, and Ehrlichia muris DNA – in 1.8 %. Infected mammals were not found in the other three examined districts of Irkutsk region. In Novosibirsk region, B. microti DNA was found in 8.9 % of small rodents, A. phagocytophilum DNA – in 8.9 % of small mammals, and Candidatus Neoehrlichia mikurensis DNA – in 8.9 % of small mammals. The identified infection agents corresponded to microorganism species and genetic variants previously found in Ixodes persulcatus ticks but not in ticks of other species.

scholarly journals The study of anaplasma and ehrlichia genetic variability in parasitic systems in the South-Western Siberia and Ural

2006 ◽  
Vol 5 ◽  
pp. 116-120
Author(s):  
V. A. Rar ◽  
N. N. Livanova ◽  
V. V. Panov ◽  
V. B. Astanin ◽  
S. G. Livanov ◽  
...  
Keyword(s):  
Genetic Variability ◽  
Small Mammals ◽  
Genetic Variants ◽  
Nested Pcr ◽  
Anaplasma Phagocytophilum ◽  
Western Siberia ◽  
Ixodes Persulcatus ◽  
Blood Samples ◽  
Novosibirsk Region ◽  
Ehrlichia Muris

Ehrlichia muris and Anaplasma phagocytophilum DNA were detected using nested PCR among Ixodes persulcatus collected in Novosibirsk, Sverdlovsk and Chelyabinsk regions and in blood samples of small mammals from Novosibirsk and Sverdlovsk re- gions. Two genetic variants of A. phagocytophilum were revealed in blood samples and ticks from Novosibirsk region.

scholarly journals BABESIA INFECTION OF SMALL MAMMALS FROM SOUTHERN TAIGA OF OMSK REGION

2016 ◽  
Vol 1 (1) ◽  
pp. 59-64
Author(s):  
Боброва ◽  
Oksana Bobrova ◽  
Танцев ◽  
Aleksey Tantsev ◽  
Епихина ◽  
...  
Keyword(s):  
Small Mammals ◽  
Small Mammal ◽  
Nested Pcr ◽  
Southern Taiga ◽  
Babesia Microti ◽  
Ixodes Persulcatus ◽  
Blood Samples ◽  
Genetic Groups ◽  
Tamias Sibiricus ◽  
Babesia Spp

Blood samples were taken from 541 small mammal captured in 2013–2015 in Znamensky district of Omsk region from Ixodes persulcatus and Ixodes trianguliceps sympatric area and examined for the Babesia spp. presence by nested PCR with subsequent sequencing of positive samples. Babesia microti DNA was found in 31,1 % of positive samples; a proportion of infected mammals varied from 5,3 % to 61,6 % in different sampling periods. B. microti DNA was found in samples from three prevailing Myodes species as well as from a root vole (Microtus oeconomus), field voles (Microtus argestis) and Siberian chipmunks (Tamias sibiricus). It was shown that identified B. microti samples belong to two genetic groups: B. microti ‘US’-type and B. microti ‘Munich’-type; notably that > 90 % infected mammals contained DNA of nonpathogenic for human B. microti ‘Munich’-type. We suppose that I. trianguliceps tick is the most probable vector of B. microti ‘Munich’-type.

scholarly journals Diversity Borrelia burgdorferi sensu lato in natural foci of Novosibirsk region

2006 ◽  
Vol 5 ◽  
pp. 93-98
Author(s):  
N. V. Fomenko ◽  
Ye. V. Romanova ◽  
Yu. Yu. Karavaeva ◽  
V. V. Panov ◽  
N. Ya. Chernousova ◽  
...  
Keyword(s):  
Borrelia Burgdorferi ◽  
Small Mammals ◽  
Human Blood ◽  
Test Sample ◽  
Borrelia Burgdorferi Sensu Lato ◽  
Ixodes Persulcatus ◽  
Novosibirsk Region ◽  
Natural Foci ◽  
Pcr Assays

PCR assays were used to test sample from Ixodes persulcatus, blood and tissues of small mammals, human blood after tick bi- tes, as well as isolates from adult ticks. It was demonstrated the presence of two Borrelia species: B. garinii and B. afzelii. Mainly DNA B. garinii NT29 were determined.

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