scholarly journals INFLUENCE OF NATURAL FACTORS ON THE NUMBER OF IXODIC TICKS OF THE GENUS DERMACENTOR IN TYUMEN REGION

2021 ◽  
pp. 156-160
Author(s):  
Glazunov
Keyword(s):  
Air Temperature ◽  
Dermacentor Reticulatus ◽  
Ixodid Ticks ◽  
Ixodes Persulcatus ◽  
Large Mammals ◽  
Depressing Effect ◽  
Dominance Index ◽  
Spring Period ◽  
Natural Factors ◽  
Ixodes Apronophorus

At present, the ixodofauna of the Tyumen region is represented by six species of ixodid ticks – these are Ixodes persulcatus Schulze, 1930; Dermacentor reticulatus Fabricius, 1794 (D. pictus, Hermann, 1804); D. marginatus Sulz, 1776; I. apronophorus P. Sch., 1924; I. (Exopalpiger) trianguliceps Bir., 1895 and I. (Ceratixodes) plumbeus, Kirsch., 1936. Three species of ixodid ticks parasitize cattle: I. persulcatus, D. reticulatus, D. marginatus. The remaining three species of ticks, Ixodes apronophorus, Ixodes strianguliceps, and Ixodes plumbeus, belong to the nest-like parasitic type and therefore are less dangerous parasites for large mammals. The most widespread ticks of the genus Ixodes and Dermacentor in the context of all natural-geographical zones of the region are ticks of the genus Dermacentor, their dominance index was 54.8%. As a result of observation, it was noted that the temperature and humidity of the air affect the activity of ixodid ticks of the genus Dermacentor in nature. Thus, the peak of ixodid activity in the spring period fell on days when the air temperature reached values from 16 oC to 26 oC, and in autumn from 15 oC to 21 oC, while lower and higher humidity indices had a depressing effect on ixodid mites of the genus Dermacentor.

scholarly journals Detection and genotyping of Anaplasma phagocytophilum in I. persulcatus and D. reticulatus ticks collected in Tomsk (Western Siberia) in 2015–2016

2019 ◽  
Vol 18 (2) ◽  
pp. 89-98
Author(s):  
M. Yu. Kartashov ◽  
T. P. Mikryukova ◽  
N. S. Moskvitina ◽  
E. I. Krivosheina ◽  
A. I. Kuznetsov ◽  
...  
Keyword(s):  
Phylogenetic Analysis ◽  
Nucleotide Sequence ◽  
Western Siberia ◽  
Genetic Material ◽  
Dermacentor Reticulatus ◽  
Ixodid Ticks ◽  
Ixodes Persulcatus ◽  
Human Granulocytic Anaplasmosis ◽  
Granulocytic Anaplasmosis ◽  
Species Specific

Introduction. The detection of the first cases of tick-borne human granulocytic anaplasmosis in Russia, discovery of genetic markers for Anaplasma spp. in ixodid ticks and reporting of a significant number of cases of tick-borne infections in the southern part of Western Siberia give reason to suppose that causative agents of tick-borne anaplasmosis may be transmitted in Tomsk and its suburbs. Objective. To study the distribution and species biodiversity of A. phagocytophilum in ixodid ticks in Tomsk Region. Materials and methods. The analysis of 690 individual ixodid ticks (larvae and adults) was carried out for Ixodes persulcatus (n = 530) and Dermacentor reticulatus (n = 160) ticks collected in 2015–2016 on the territory of urban and suburban biotopes of Tomsk. Primary screening of ticks for the presence of genetic material of A. phagocytophilum was conducted using two-round PCR with species-specific primers for the 16S rRNA gene. The amplification (1,220 kB) of the groESL fragment of the heat shock protein operon was performed for positive isolates with subsequent determination of the nucleotide sequence in the gene fragment for phylogenetic analysis. Results. The number of A. phagocytophilum positive samples for I. persulcatus (larvae) was 1.2 ± 0.6%, I. persulcatus (adult) was 1.8 ± 0.7%; and D. reticulatus (adult) was 0.6 ± 0.3%. Analysis of the nucleotide sequence of the gene fragments in groESL operon for nine isolates confirmed that the genetic material of the granulocytic anaplasmosis was detected. Phylogenetic analysis showed that all the isolates belonged to the first group of the “new cluster” of A. phagocytophilum. Conclusion. The causative agent of human granulocytic anaplasmosis has been newly detected in I. persulcatus ticks collected in urban and suburban biotopes of Tomsk and in D. reticulatus from urban foci.

scholarly journals From the experience of combating ixodid ticks with vectors of spring-summer tick-borne encephalitis

2021 ◽  
Vol 43 (3) ◽  
pp. 5-8
Author(s):  
M. A. Smetanina
Keyword(s):  
Air Temperature ◽  
Ixodid Ticks ◽  
Ixodes Persulcatus ◽  
Mixed Forests ◽  
The Third ◽  
Tick Borne Encephalitis ◽  
Mass Activity

The beginning of the activity of the tick - the vector of spring-summer encephalitis - Ixodes persulcatus in the deciduous and mixed forests of the TASSR is marked from the second decade of April at an average daily air temperature of 4-5, -1- 10.4o and an average ten-day f-6.5 , 4-8.0 . The mass activity of ticks is observed in the third decade of May and the first decade of June.

scholarly journals Detection of bartonella DNA in ixodid ticks, mosquitoes and in patients blood in Novosibirsk region

2006 ◽  
Vol 5 ◽  
pp. 106-110
Author(s):  
O. V. Morozova ◽  
L. V. Petrozhitskaya ◽  
N. Ya. Chernousova ◽  
A. G. Mirzayeva ◽  
A. K. Dobrotvorsky ◽  
...  
Keyword(s):  
Human Blood ◽  
Mixed Infection ◽  
Nested Pcr ◽  
Bartonella Henselae ◽  
Dermacentor Reticulatus ◽  
Ixodid Ticks ◽  
Ixodes Persulcatus ◽  
Bartonella Quintana ◽  
Novosibirsk Region ◽  
Pcr Product

Bartonella DNA was detected using nested PCR in ticks Ixodes persulcatus and Dermacentor reticulatus, in mosquitoes Aedes cantans, but not in other mosquito or gnat species. Phylogenic analysis of the PCR product nucleotide sequences proved the infec- tion of arthropod vectors and human blood with Bartonella henselae, Bartonella quintana or their mixed infection in Novosibirsk region.

scholarly journals The efficacy of FOS and Fitoverm drugs against Ixodes ticks

2021 ◽  
Vol 15 (1) ◽  
pp. 85-91
Author(s):  
E. I. Butakov ◽  
L. D. Shamanskaya
Keyword(s):  
Lethal Effect ◽  
Ixodid Tick ◽  
Dermacentor Reticulatus ◽  
Ixodid Ticks ◽  
Biologically Active ◽  
Ixodes Persulcatus ◽  
Field Environment ◽  
Ixodes Ticks ◽  
Working Solution ◽  
Grass Stand

The purpose of the research is studying the efficacy of FOS and Fitoverm drugs against ixodid ticks.Materials and methods. The study objects were ixodid tick species Ixodes persulcatus (Schulze, 1930), Dermacentor reticulatus (Hermann, 1804) and D. marginatus (Schulzer, 1776) in the imago stage. Ticks were collected in the environment of the Altai plains and mountains from vegetation to the flag under the methodology. The efficacy of drug acaricidal activity was assessed according to the methodological guide. In the laboratory, the ticks were placed in a chamber at a temperature of 7 оC. The effect of drugs was assessed by observation every hour for 2-3 days. Live ticks (20 individuals) were contacted with the drug by immersion three times in the working solution in a permeable fabric container. Neostomosan was used as control. Further tests of FOS and Fitoverm were carried out in the field environment. Briz 25% e.c. was used as control. The plots on which the number of Ixodes had previously been recorded was treated using a sprayer on June 1-2 in the morning. The number of live ticks in the plots was counted 1-2 days after the treatment. The biochemical composition of grass stand on various treated grounds was studied according to standard methods. The results were processed statistically.Results and discussion. The Siberian Scientific-Research Institute of Horticulture has developed a series of environmentally friendly drugs based on natural biologically active substances that have shown high efficacy against Ixodes. These are FOS and Fitoverm, which provided a 100% lethal effect against Ixodes in working concentrations of 3–4% and 0.1–0.3% under laboratory conditions. Treatment with Fitoverm 0.3%, FOS 3% and synthetic industrial drug Briz 25% of e.c. 0.75% of grass stand at the stage of grazing for cattle in pasture conditions statistically significantly reduces the number of ticks by 71–79%.

scholarly journals Atlas of ticks (Acari: Argasidae, Ixodidae) in Germany

2021 ◽  
Author(s):  
Franz Rubel ◽  
Katharina Brugger ◽  
Lidia Chitimia-Dobler ◽  
Hans Dautel ◽  
Elisabeth Meyer-Kayser ◽  
...  
Keyword(s):  
Tick Species ◽  
Migratory Birds ◽  
Dermacentor Reticulatus ◽  
Ixodid Ticks ◽  
Federal States ◽  
Ixodes Frontalis ◽  
Argas Reflexus ◽  
The One ◽  
Argasid Tick ◽  
First Time

AbstractAn updated and increased compilation of georeferenced tick locations in Germany is presented here. This data collection extends the dataset published some years ago by another 1448 new tick locations, 900 locations of which were digitized from literature and 548 locations are published here for the first time. This means that a total of 3492 georeferenced tick locations is now available for Germany. The tick fauna of Germany includes two species of Argasidae in the genera Argas and Carios and 19 species of Ixodidae in the genera Dermacentor, Haemaphysalis, and Ixodes, altogether 21 tick species. In addition, three species of Ixodidae in the genera Hyalomma (each spring imported by migratory birds) and Rhipicephalus (occasionally imported by dogs returning from abroad with their owners) are included in the tick atlas. Of these, the georeferenced locations of 23 tick species are depicted in maps. The occurrence of the one remaining tick species, the recently described Ixodes inopinatus, is given at the level of the federal states. The most common and widespread tick species is Ixodes ricinus, with records in all 16 federal states. With the exception of Hamburg, Dermacentor reticulatus was also found in all federal states. The occurrence of the ixodid ticks Ixodes canisuga, Ixodes frontalis, Ixodes hexagonus and I. inopinatus were documented in at least 11 federal states each. The two mentioned argasid tick species were also documented in numerous federal states, the pigeon tick Argas reflexus in 11 and the bat tick Carios vespertilionis in seven federal states. The atlas of ticks in Germany and the underlying digital dataset in the supplement can be used to improve global tick maps or to study the effects of climate change and habitat alteration on the distribution of tick species.

scholarly journals Rickettsia spp. in rodent-attached ticks and first evidence of Spotted fever Group Rickettsia species Candidatus Rickettsia uralica in Europe.

2020 ◽  
Author(s):  
Maria Vikentjeva ◽  
Julia Geller ◽  
Jaanus Remm ◽  
Irina Golovljova
Keyword(s):  
Spotted Fever ◽  
Ixodid Ticks ◽  
Distribution Area ◽  
Myodes Glareolus ◽  
Ixodes Persulcatus ◽  
Spotted Fever Group ◽  
Human Pathogens ◽  
Rickettsia Species ◽  
Questing Ticks ◽  
Spotted Fever Group Rickettsia

Abstract BACKGROUND Rickettsia spp. are human pathogens that cause a number of diseases and are transmitted by arthropods, including ixodid ticks. Estonia contributes a region, where the distribution area of two exophilic tick species of known medical importance, Ixodes persulcatus and I. ricinus, overlap. The presence of the nidicolous rodent-associated I. trianguliceps has recently been shown for Estonia. Although there is no Estonian data available on human disease caused by tick-borne Rickettsia spp., the presence of three Rickettsia species in non-nidicolous ticks, albiet at very dissimilar rates, was also previously reported. The aim of this studywas to screen, identify and characterize Rickettsia species in nidicolous and non-nidicolous ticks attached to rodents. RESULTS Nymphs and larvae of I. ricinus ( n = 1004), I . persulcatus ( n = 75) and I. trianguliceps ( n = 117) attached to rodents and shrews caught in different parts of Estonia were studied for the presence of Rickettsia spp. by nested PCR. Ticks were removed from 314 small animals of 5 species (bank voles Myodes glareolus , yellow necked mice Apodemus flavicollis , striped field mice A. agrarius, pine voles M. subterranius and common shrews S. araneus) . Rickettsial DNA was detected in 8,7% (103/1186) studied ticks. In addition to R. helvetica, previously found in questing ticks, this study reports the first identification of the recently described I. trianguliceps- associated Candidatus R. uralica in west of the Ural.

scholarly journals Prevalence and monitoring of ixodid ticks in the western region of Ukraine

2020 ◽  
Vol 23 (9) ◽  
pp. 38-45
Author(s):  
Viktoriya Levytska ◽  
Andrii Mushynskyi ◽  
Andrii Berezovskyi
Keyword(s):  
Dermacentor Reticulatus ◽  
Average Density ◽  
Ixodid Ticks ◽  
Seasonal Activity ◽  
Widespread Species ◽  
Wooded Area ◽  
Western Asia ◽  
Significant Difference ◽  
Northern Regions ◽  
Two Peaks

Ixodes ricinus is the most common tick in Europe, distributed almost throughout the continent, except the northern regions. Dermacentor reticulatus is a widespread species of tick in Europe and Western Asia. The study included monitoring the distribution density and seasonal activity of ticks D. reticulatus and I. ricinus in the natural environment during 2018-2019. A total of 1592 D. reticulatus ticks and 712 I. ricinus ticks were collected in Ternopil, Ivano-Frankivsk and Lviv oblasts. There was a tendency to increasing of the number of ticks of both species in 2019 compared to 2018. The largest number of ticks was collected in autumn 2019, during the autumn peak of activity, which amounted to 710 adult ticks. Thus, the average density of ticks of both species collected in the Ternopil region was 40 ticks/1000 m2, in Ivano-Frankivsk – 32 and 45 in Lviv regions in 2018 and 62, 46 and 63 ticks/1000 m2 in 2019, respectively. In the spring of 2018, almost twice as many adult ticks of D. reticulatus were detected as in the fall in all areas. With regard to I. ricinus ticks, we did not observe a statistically significant difference in seasonal activity. In the spring and autumn, two peaks of ticks’ activity were registered in all regions and the average number of ticks in the spring in the meadows was 20 ticks/1000 m2, and on the wooded area – 39 ticks/1000 m2, and in autumn – 17 and 41 ticks/ 1000 m2 respectively. During both years and in all three oblasts, females prevailed over males during all the period. Although the density of ticks of both species in all areas was quite high, but the ticks were unevenly distributed. The largest number of D. reticulatus ticks was found in the Lviv region in 2019, which ranged from 46 to 119 ticks/1000 m2. Low and medium density of adult ticks D. reticulatus and I. ricinus, from 11 to 77 ticks/1000 m2 was observed in Ivano-Frankivsk region in 2018. Throughout the study period, the seasonal activity of D. reticulatus and I. ricinus ticks was significantly affected by air temperature, which fluctuated during collection of ticks.

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