Abstract:
:Parasites represent ideal models for unravelling biogeographic patterns and mechanisms of diversification on islands. Both host-mediated dispersal and within-island adaptation can shape parasite island assemblages. In this study, we examined patterns of genetic diversity and structure of Ornithodoros seabird ticks within the Cape Verde Archipelago in relation to their global phylogeography. Contrary to expectations, ticks from multiple, geographically distant clades mixed within the archipelago. Trans-oceanic colonization via host movements probably explains high local tick diversity, contrasting with previous research that suggests little large-scale dispersal in these birds. Although host specificity was not obvious at a global scale, host-associated genetic structure was found within Cape Verde colonies, indicating that post-colonization adaptation to specific hosts probably occurs. These results highlight the role of host metapopulation dynamics in the evolutionary ecology and epidemiology of avian parasites and pathogens.
journal_name
Biol Lettjournal_title
Biology lettersauthors
Gómez-Díaz E,Morris-Pocock JA,González-Solís J,McCoy KDdoi
10.1098/rsbl.2012.0179subject
Has Abstractpub_date
2012-08-23 00:00:00pages
616-9issue
4eissn
1744-9561issn
1744-957Xpii
rsbl.2012.0179journal_volume
8pub_type
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