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Updated: Aug 6, 2026
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Tick Microbiome Characterization by Next-Generation 16S rRNA Amplicon Sequencing
Published on: August 25, 2018
Spatial Heterogeneity of Tick-Borne Pathogens Outpaces Genetic Structuring in Anatolian Dermacentor reticulatus
Ömer Orkun1, Maide Nur Gündoğdu2, Tuğba Özdemir2
1Department of Parasitology, Faculty of Veterinary Medicine, Ankara University, Ankara, Türkiye, ankara.edu.tr.
Transboundary and Emerging Diseases
|July 22, 2026
Summary
Vector genetics in Anatolian Dermacentor reticulatus ticks show limited structure, contrasting with varied spatial patterns of tick-borne pathogens. This mismatch highlights complex eco-epidemiological dynamics in this transitional region.
Area of Science:
- Tick-borne disease ecology
- Vector population genetics
- Pathogen circulation dynamics
Background:
- Understanding vector population structure is crucial for predicting tick-borne disease spread, especially in complex biogeographical areas.
- Dermacentor reticulatus ticks are important vectors of various pathogens across the Palearctic region.
- Anatolia represents a significant ecogeographical transition zone, making it ideal for studying vector-pathogen relationships.
Purpose of the Study:
- To investigate the population genetic structure of Dermacentor reticulatus in Anatolia.
- To screen these ticks for the presence of various tick-borne pathogens.
- To analyze the relationship between vector genetic diversity and pathogen distribution patterns.
Main Methods:
- Mitochondrial (cox1) and nuclear (ITS2) DNA sequencing for population genetic analysis.
- Broad-spectrum screening for tick-borne pathogens.
- Spatial analysis of tick population genetics and pathogen detection data.
Main Results:
- Dermacentor reticulatus populations in Anatolia exhibited moderate genetic diversity with limited regional structuring, clustering with broader Eurasian lineages.
- Pathogen detections, including Rickettsia raoultii and Coxiella burnetii, displayed significant spatial heterogeneity, not correlating with tick genetic structure.
- Species-specific differences in population structure and pathogen assemblages were observed when compared to sympatric Dermacentor marginatus.
Conclusions:
- A mismatch exists between the genetic structure of Dermacentor reticulatus populations and the spatial distribution of tick-borne pathogens in Anatolia.
- Local ecological factors, host communities, and transmission dynamics likely drive the observed spatial heterogeneity of pathogen detections.
- These findings offer insights into the eco-epidemiology of tick-borne pathogens in a key transition zone of the eastern Palearctic.
