Genetic structure among Charadrius plovers on the African mainland and islands of Madagascar and St Helena

Dos Remedios, Natalie, Küpper, Clemens, Székely, Tamas, Zefania, Sama, Burns, Fiona, Bolton, Mark and Lee, Patricia L. M. 2018, Genetic structure among Charadrius plovers on the African mainland and islands of Madagascar and St Helena, Ibis, doi: 10.1111/ibi.12694.

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Title Genetic structure among Charadrius plovers on the African mainland and islands of Madagascar and St Helena
Author(s) Dos Remedios, Natalie
Küpper, Clemens
Székely, Tamas
Zefania, Sama
Burns, Fiona
Bolton, Mark
Lee, Patricia L. M.ORCID iD for Lee, Patricia L. M.
Journal name Ibis
Total pages 15
Publisher Wiley
Place of publication Chichester, Eng.
Publication date 2018-11-12
ISSN 0019-1019
Summary © 2018 The Authors. Ibis published by John Wiley & Sons Ltd on behalf of British Ornithologists' Union. Colonization of islands by long-distance dispersers has great impact on genetic diversification among populations and may spearhead speciation events. We investigated intra- and interspecific divergence in Charadrius plovers with populations on mainland Africa, Madagascar and St Helena. We analysed microsatellite loci and sequence data from four nuclear and two mitochondrial gene regions. Charadrius plovers are shorebirds with high dispersal and mobility. Our results confirmed genetic differentiation between Madagascar and mainland populations of three plover species (White-fronted Plover Charadrius marginatus, Kittlitz's Plover Charadrius pecuarius and, based on sequence data only, Three-banded Plover Charadrius tricollaris) but highlight substantial variation in levels of intraspecific divergence among the three species. Namely, the Kittlitz's Plover, a dispersive habitat generalist with a polygamous mating system, exhibited lower island–mainland differentiation (0.05% COI sequence divergence) compared with the two monogamous species, the White-fronted Plover (0.6% COI divergence) and Three-banded Plover (1.6% COI divergence). In addition, past colonization of the islands of St Helena and Madagascar by ancestors of today's Kittlitz's Plover has led to the evolution of two endemic island species, the Madagascar Plover Charadrius thoracicus and the more closely-related St Helena Plover Charadrius sanctaehelenae. We discuss the factors driving species differences in island–mainland divergence and highlight the importance of conserving genetically unique island populations and island habitats to safeguard future evolutionary potential.
Notes In Press
Language eng
DOI 10.1111/ibi.12694
Field of Research 0608 Zoology
0806 Information Systems
0602 Ecology
HERDC Research category C1 Refereed article in a scholarly journal
ERA Research output type C Journal article
Copyright notice ©2018, The Authors
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Document type: Journal Article
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