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Journal Articles Molecular Ecology Year : 2020

Host dispersal shapes the population structure of a tick‐borne bacterial pathogen

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Ana Cláudia Norte
  • Function : Author
Gabriele Margos
  • Function : Author
Noémie Becker
  • Function : Author
Jaime Albino Ramos
  • Function : Author
Maria Sofia Núncio
  • Function : Author
Volker Fingerle
  • Function : Author
Pedro Miguel Araújo
  • Function : Author
Peter Adamík
  • Function : Author
Haralambos Alivizatos
  • Function : Author
Emilio Barba
  • Function : Author
Rafael Barrientos
  • Function : Author
Laure Cauchard
Tibor Csörgő
  • Function : Author
Anastasia Diakou
  • Function : Author
Niels Dingemanse
  • Function : Author
Anna Dubiec
  • Function : Author
Tapio Eeva
  • Function : Author
Barbara Flaisz
  • Function : Author
Tomas Grim
  • Function : Author
Michaela Hau
  • Function : Author
Dieter Heylen
  • Function : Author
Sándor Hornok
  • Function : Author
Savas Kazantzidis
  • Function : Author
David Kováts
  • Function : Author
František Krause
  • Function : Author
Ivan Literak
  • Function : Author
Raivo Mänd
  • Function : Author
Lucia Mentesana
  • Function : Author
Marko Mutanen
  • Function : Author
Júlio Manuel Neto
  • Function : Author
Markéta Nováková
  • Function : Author
Juan José Sanz
  • Function : Author
Luís Pascoal da Silva
  • Function : Author
Hein Sprong
  • Function : Author
Ina‐sabrina Tirri
  • Function : Author
János Török
  • Function : Author
Tomi Trilar
  • Function : Author
Zdeněk Tyller
  • Function : Author
Marcel Visser
Isabel Lopes de Carvalho
  • Function : Author

Abstract

Birds are hosts for several zoonotic pathogens. Because of their high mobility, especially of longdistance migrants, birds can disperse these pathogens, affecting their distribution and phylogeography. We focused on Borrelia burgdorferi sensu lato, which includes the causative agents of Lyme borreliosis, as an example for tick‐borne pathogens, to address the role of birds as propagation hosts of zoonotic agents at a large geographical scale. We collected ticks from passerine birds in 11 European countries. B. burgdorferi s.l. prevalence in Ixodes spp. was 37% and increased with latitude. The fieldfare Turdus pilaris and the blackbird T. merula carried ticks with the highest Borrelia prevalence (92 and 58%, respectively), whereas robin Erithacus rubecula ticks were the least infected (3.8%). Borrelia garinii was the most prevalent genospecies (61%), followed by B. valaisiana (24%), B. afzelii (9%), B. turdi (5%) and B. lusitaniae (0.5%). A novel Borrelia genospecies “Candidatus Borrelia aligera” was also detected. Multilocus sequence typing (MLST) analysis of B. garinii isolates together with the global collection of B. garinii genotypes obtained from the Borrelia MLST public database revealed that: (a) there was little overlap among genotypes from different continents, (b) there was no geographical structuring within Europe, and (c) there was no evident association pattern detectable among B. garinii genotypes from ticks feeding on birds, questing ticks or human isolates. These findings strengthen the hypothesis that the population structure and evolutionary biology of tick‐borne pathogens are shaped by their host associations and the movement patterns of these hosts.
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Dates and versions

hal-02990550 , version 1 (19-11-2020)

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Ana Cláudia Norte, Gabriele Margos, Noémie Becker, Jaime Albino Ramos, Maria Sofia Núncio, et al.. Host dispersal shapes the population structure of a tick‐borne bacterial pathogen. Molecular Ecology, 2020, 29 (3), pp.485-501. ⟨10.1111/mec.15336⟩. ⟨hal-02990550⟩
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