Dermacentor ticks and their human pathogens in various ecosystems of eastern France
Dermacentor is Europe’s second most important tick genus. It comprises two species: Dermacentor reticulatus, which has a more northerly range, and Dermacentor marginatus, which is typically found in Mediterranean regions. In France, especially in the east, the presence of Dermacentor remains underst...
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Elsevier
2025-07-01
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| Series: | Ticks and Tick-Borne Diseases |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S1877959X25000846 |
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| author | C. Barthel J. Stynen M. Grau M-L. Poulle P. Bauda N. Boulanger |
| author_facet | C. Barthel J. Stynen M. Grau M-L. Poulle P. Bauda N. Boulanger |
| author_sort | C. Barthel |
| collection | DOAJ |
| description | Dermacentor is Europe’s second most important tick genus. It comprises two species: Dermacentor reticulatus, which has a more northerly range, and Dermacentor marginatus, which is typically found in Mediterranean regions. In France, especially in the east, the presence of Dermacentor remains understudied. Leveraging projects on Ixodes ricinus, we identified high-risk ecosystems for Dermacentor ticks. Both species were present, but D. reticulatus was dominant (96.3 %), always coexisting with Ixodes, at densities reaching 30.3 questing adults/100 m2 in Bas-Rhin. This species was found to thrive in wet meadows, alluvial forests, and lakes, where wild boars (Sus scrofa) are common. Among domestic animals, dogs and horses were the preferred hosts. Regarding human pathogens, we focused on the circulation of rickettsiae responsible for tick-borne lymphadenopathy. Acarological risk varied by region, with Rickettsia raoultii being the most prevalent bacterial species in all the departments, whereas Rickettsia slovaca was rarer and present only in 2 Bas-Rhin nature reserves. At the peak of tick activity, up to 18.7 % of Dermacentor adult ticks carried R. raoultii. In the studied region, D. reticulatus is the only known vector of these potentially pathogenic microorganisms. |
| format | Article |
| id | doaj-art-25cd8b1d26b849ec933a7aac129c232a |
| institution | DOAJ |
| issn | 1877-9603 |
| language | English |
| publishDate | 2025-07-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Ticks and Tick-Borne Diseases |
| spelling | doaj-art-25cd8b1d26b849ec933a7aac129c232a2025-08-20T02:45:50ZengElsevierTicks and Tick-Borne Diseases1877-96032025-07-0116410252010.1016/j.ttbdis.2025.102520Dermacentor ticks and their human pathogens in various ecosystems of eastern FranceC. Barthel0J. Stynen1M. Grau2M-L. Poulle3P. Bauda4N. Boulanger5UR3073: PHAVI: Pathogen-Host-Arthropod Vector Interactions: ticks and tick-borne diseases group, Université de Strasbourg, FranceUR3073: PHAVI: Pathogen-Host-Arthropod Vector Interactions: ticks and tick-borne diseases group, Université de Strasbourg, FranceCentre d’épidémiologie et de santé publique des armées (CESPA), Marseille, FranceUR ESCAPE, Université de Reims, France; Zone Atelier Argonne, Institut de Chimie Moléculaire de Reims, UMR CNRS 7312, Case postale 44, UFR Sciences Exactes et Naturelles, BP 1039, 51687 Reims Cedex 2, FranceLIEC, CNRS, Université de Lorraine, 57 000 Metz, FranceUR3073: PHAVI: Pathogen-Host-Arthropod Vector Interactions: ticks and tick-borne diseases group, Université de Strasbourg, France; Centre National de Référence Borrelia, Hôpitaux Universitaires de Strasbourg, France; Corresponding author: Boulanger N.Dermacentor is Europe’s second most important tick genus. It comprises two species: Dermacentor reticulatus, which has a more northerly range, and Dermacentor marginatus, which is typically found in Mediterranean regions. In France, especially in the east, the presence of Dermacentor remains understudied. Leveraging projects on Ixodes ricinus, we identified high-risk ecosystems for Dermacentor ticks. Both species were present, but D. reticulatus was dominant (96.3 %), always coexisting with Ixodes, at densities reaching 30.3 questing adults/100 m2 in Bas-Rhin. This species was found to thrive in wet meadows, alluvial forests, and lakes, where wild boars (Sus scrofa) are common. Among domestic animals, dogs and horses were the preferred hosts. Regarding human pathogens, we focused on the circulation of rickettsiae responsible for tick-borne lymphadenopathy. Acarological risk varied by region, with Rickettsia raoultii being the most prevalent bacterial species in all the departments, whereas Rickettsia slovaca was rarer and present only in 2 Bas-Rhin nature reserves. At the peak of tick activity, up to 18.7 % of Dermacentor adult ticks carried R. raoultii. In the studied region, D. reticulatus is the only known vector of these potentially pathogenic microorganisms.http://www.sciencedirect.com/science/article/pii/S1877959X25000846Dermacentor reticulatusDermacentor marginatusRickettsia raoultiiRickettsia slovacaWetlandsEcosystem |
| spellingShingle | C. Barthel J. Stynen M. Grau M-L. Poulle P. Bauda N. Boulanger Dermacentor ticks and their human pathogens in various ecosystems of eastern France Ticks and Tick-Borne Diseases Dermacentor reticulatus Dermacentor marginatus Rickettsia raoultii Rickettsia slovaca Wetlands Ecosystem |
| title | Dermacentor ticks and their human pathogens in various ecosystems of eastern France |
| title_full | Dermacentor ticks and their human pathogens in various ecosystems of eastern France |
| title_fullStr | Dermacentor ticks and their human pathogens in various ecosystems of eastern France |
| title_full_unstemmed | Dermacentor ticks and their human pathogens in various ecosystems of eastern France |
| title_short | Dermacentor ticks and their human pathogens in various ecosystems of eastern France |
| title_sort | dermacentor ticks and their human pathogens in various ecosystems of eastern france |
| topic | Dermacentor reticulatus Dermacentor marginatus Rickettsia raoultii Rickettsia slovaca Wetlands Ecosystem |
| url | http://www.sciencedirect.com/science/article/pii/S1877959X25000846 |
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