RT Journal Article T1 Host dispersal shapes the population structure of a tick‐borne bacterial pathogen A1 Norte, Ana Cláudia A1 Margos, Gabriele A1 Becker, Noémie S. A1 Albino Ramos, Jaime A1 Núncio, Maria Sofia A1 Fingerle, Volker A1 Araújo, Pedro Miguel A1 Adamík, Peter A1 Alivizatos, Haralambos A1 Barba, Emilio A1 Barrientos Yuste, Rafael A1 Cauchard, Laure A1 Csörgő, Tibor A1 Diakou, Anastasia A1 Dingemanse, Niels J. A1 Doligez, Blandine A1 Dubiec, Anna A1 Eeva, Tapio A1 Flaisz, Barbara A1 Grim, Tomas A1 Hau, Michaela A1 Heylen, Dieter A1 Hornok, Sándor A1 Kazantzidis, Savas A1 Kováts, David A1 Krause, František A1 Literak, Ivan A1 Mänd, Raivo A1 Mentesana, Lucia A1 Morinay, Jennifer A1 Mutanen, Marko A1 Neto, Júlio Manuel A1 Nováková, Markéta A1 Sanz, Juan José A1 da Silva, Luís Pascoal A1 Sprong, Hein A1 Tirri, Ina‐Sabrina A1 Török, János A1 Trilar, Tomi A1 Tyller, Zdeněk A1 Visser, Marcel E. A1 de Carvalho, Isabel Lopes AB 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. AB Las aves tienen patógenos de muy diversa índole. Gracias a su capacidad de vuelo -muy especialmente la de las aves migradoras-, pueden condicionar la filogenia de sus parásitos. En este trabajo en el que han participado investigadores de 11 países europeos, encontramos que un patógeno bacteriano (Borrelia sp.) carecía de estructuración geográfica dentro del continente, lo que parece estar condicionado por el comportamiento y los patrones de movimiento de sus hospedadores aviares. PB Wiley SN 1365-294X YR 2019 FD 2019-12-17 LK https://hdl.handle.net/20.500.14352/6411 UL https://hdl.handle.net/20.500.14352/6411 LA eng NO Unión Europea. Horizonte 2020 NO Fundação para a Ciência e a Tecnologia (FCT) NO Instituto Nacional de Saúde (INSA) NO Estonian Research Council (ETAg) NO Slovenian Research Agency (ARRS) NO Academy of Finland NO Palacky University Olomouc (UP) DS Docta Complutense RD 15 dic 2025