Genetic variability of Rickettsia spp. in Dermacentor and Haemaphysalis ticks from the Russian Far East
| Autor: | Yana Igolkina, Natalya M. Pukhovskaya, Nelya P. Vysochina, Irina Golovljova, Leonid Ivanov, Nina V. Tikunova, V. A. Rar, Artem Tikunov, T. I. Epikhina |
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| Rok vydání: | 2018 |
| Předmět: |
0301 basic medicine
Male Nymph Haemaphysalis concinna Ixodidae 030231 tropical medicine ved/biology.organism_classification_rank.species Zoology Tick Microbiology 03 medical and health sciences 0302 clinical medicine Rickettsia heilongjiangensis medicine Animals Rickettsia Dermacentor biology ved/biology Rickettsia sibirica Genetic Variation biology.organism_classification Haemaphysalis medicine.disease Siberia 030104 developmental biology Infectious Diseases Rickettsiosis Insect Science Larva Candidatus Parasitology Female |
| Zdroj: | Ticks and tick-borne diseases. 9(6) |
| ISSN: | 1877-9603 |
| Popis: | The Russian Far East is an endemic region for tick-borne rickettsioses. However, the prevalence and genetic variability of Rickettsia species in this region have not been extensively investigated. In this study, 188 Dermacentor silvarum, 439 Haemaphysalis concinna, and 374 Haemaphysalis japonica adult ticks were collected from four locations in Khabarovsk Province and three locations in Amur Province in the Russian Far East. These ticks were examined for the presence of Rickettsia spp. by amplifying a fragment of the gltA gene. Identified rickettsiae were genotyped by sequencing of the gltA, 16S rRNA, ompA, ompB, and sca4 genes. In the examined ticks, Rickettsia heilongjiangensis, the causative agent of Far-Eastern tick-borne rickettsiosis, was found in 10.5% of H. concinna and in 1.9% of H. japonica ticks, while Rickettsia sibirica, the agent of Siberian tick typhus, was detected in only one H. concinna tick. In addition, Rickettsia raoultii was found predominantly in D. silvarum (>70%) and significantly less frequently in Haemaphysalis ticks ( |
| Databáze: | OpenAIRE |
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