Host-Dependent Genetic Structure Of Parasite Populations:Differential Dispersal Of Seabird Tick Host Races

• Published in: Evolution
• Main Authors: Mccoy, Karen D., Boulinier, Thierry, Tirard, Claire, Michalakis, Yannis
• Other Authors: Centre d’Ecologie Fonctionnelle et Evolutive (CEFE), Centre National de la Recherche Scientifique (CNRS)-Université de Montpellier (UM)-École pratique des hautes études (EPHE), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Centre international d'études supérieures en sciences agronomiques (Montpellier SupAgro)-Institut National de la Recherche Agronomique (INRA)-Université Paul-Valéry - Montpellier 3 (UPVM)-Institut national d’études supérieures agronomiques de Montpellier (Montpellier SupAgro), Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro)-Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro)-Institut de Recherche pour le Développement (IRD France-Sud ), Parasitologie évolutive (PE), École normale supérieure - Paris (ENS Paris), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Centre National de la Recherche Scientifique (CNRS), Génétique et évolution des maladies infectieuses (GEMI), Centre National de la Recherche Scientifique (CNRS)-Université Montpellier 1 (UM1)-Institut de Recherche pour le Développement (IRD France-Sud )
• Format: Article in Journal/Newspaper
• Language: English
• Published: HAL CCSD 2003
• Subjects: [Vectors]; Lyme disease]; [Coevolution Dispersal] [Genetic structure]; [enetic markers]; [Genetic] [diversity]; [Microsatellites]; [Marine birds]; [ost] [Dispersion]; [Population genetics]; [Parasites] [Aquaticinsects]; [Biological vectors]; [Human diseases]; [Public health]; [Ixodesuriae]; [Fratercula arctica]; [Rissa tridactyla]; [Borrelia burgdorferi] [xodidae]; [SDV.BID.EVO]Life Sciences [q-bio]/Biodiversity/Populations and Evolution [q-bio.PE]; [SDV.MP.PAR]Life Sciences [q-bio]/Microbiology and Parasitology/Parasitology; Atlantic puffin; fratercula; Fratercula arctica; rissa tridactyla
• Online Access: https://hal.archives-ouvertes.fr/hal-00085988; https://doi.org/10.1111/j.0014-3820.2003.tb00263.x

Despite the fact that parasite dispersal is likely to be one ofthe most important processes influencing the dynamics andcoevolution of host-parasite interactions, little information isavailable on the factors that affect it. In most cases,opportunities for parasite dispersal should be closely linked tohost biology. Here we use microsatellite genetic markers tocompare the population structure and dispersal of two host racesof the seabird tick Ixodes uriae at the scale of the NorthAtlantic. Interestingly, tick populations showed highwithin-population genetic variation and relatively low populationdifferentiation. However, gene flow at different spatial scalesseemed to depend on the host species exploited. The black-leggedkittiwake (Rissa tridactyla) had structured tick populationsshowing patterns of isolation by distance, whereas tickpopulations of the Atlantic puffin (Fratercula arctica) were onlyweakly structured at the largest scale considered. Host-dependentrates of tick dispersal between colonies will alter infestationprobabilities and local dynamics and may thus modify theadaptation potential of ticks to local hosts. Moreover, as I.uriae is a vector of the Lyme disease agent Borrelia burgdorferisensu lato in both hemispheres, the large-scale movements of birdsand the subsequent dispersal of ticks will have importantconsequences for the dynamics and coevolutionary interactions ofthis microparasite with its different vertebrate and invertebratehosts.