High diversity and low genetic structure of feather mites associated with a phenotypically variable bird host



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Fernández González, Sofía and Pérez Rodríguez, Antón David and Proctor, Heather C. and Hera Fernández, Iván de la and Pérez Tris, Javier (2018) High diversity and low genetic structure of feather mites associated with a phenotypically variable bird host. Parasitology . pp. 1-8. ISSN 0031-1820, ESSN: 1469-8161

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Official URL: https://www.cambridge.org/core/journals/parasitology/article/high-diversity-and-low-genetic-structure-of-feather-mites-associated-with-a-phenotypically-variable-bird-host/8BFCA30B1963085CE5E4D0A1E8916853


Obligate symbionts may be genetically structured among host individuals and among phenotypically distinct host populations. Such processes may in turn determine within-host genetic diversity of symbionts, which is relevant for understanding symbiont population dynamics. We analysed the population genetic structure of two species of feather mites (Proctophyllodes sylviae and Trouessartia bifurcata) in migratory and resident blackcaps Sylvia atricapilla that winter sympatrically. Resident and migratory hosts may provide mites with habitats of different qualities, what might promote specialization of mite populations. We found high genetic diversity of within-host populations for both mite species, but no sign of genetic structure of mites between migratory and resident hosts. Our results suggest that, although dispersal mechanisms between hosts during the non-breeding season are unclear, mite populations are not limited by transmission bottlenecks that would reduce genetic diversity among individuals that share a host. Additionally, there is no evidence that host phenotypic divergence (associated with the evolution of migration and residency) has promoted the evolution of host-specialist mite populations. Unrestricted dispersal among host types may allow symbiotic organisms to avoid inbreeding and to persist in the face of habitat heterogeneity in phenotypically diverse host populations.

Item Type:Article
Uncontrolled Keywords:Astigmata; COI gene; DNA-barcoding; Migratory behaviour; Symbiont dispersal; Symbiont genetic diversity
Subjects:Medical sciences > Veterinary > Parasitology
Medical sciences > Biology > Birds
Medical sciences > Biology > Ecology
Medical sciences > Biology > Evolution
Medical sciences > Biology > Genetics
Medical sciences > Biology > Invertebrates
Medical sciences > Biology > Zoology
ID Code:47437
Deposited On:09 May 2018 07:05
Last Modified:07 Apr 2022 10:21

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