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Genetic isolation in an endemic African habitat specialist

dos Remedios, Natalie, Küpper, Clemens, Székely, Tamás, Baker, Neil, Versfeld, Wilferd and Lee, Patricia L. M. 2017, Genetic isolation in an endemic African habitat specialist, Ibis, vol. 159, no. 4, pp. 792-802, doi: 10.1111/ibi.12520.

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Title Genetic isolation in an endemic African habitat specialist
Author(s) dos Remedios, Natalie
Küpper, Clemens
Székely, Tamás
Baker, Neil
Versfeld, Wilferd
Lee, Patricia L. M.ORCID iD for Lee, Patricia L. M. orcid.org/0000-0002-8489-9206
Journal name Ibis
Volume number 159
Issue number 4
Start page 792
End page 802
Total pages 11
Publisher Wiley
Place of publication Chichester, Eng.
Publication date 2017-10
ISSN 0019-1019
1474-919X
Keyword(s) dispersal
phylogeography
population genetics
shorebirds
speciation
Summary The Chestnut-banded Plover Charadrius pallidus is a Near-Threatened shorebird species endemic to mainland Africa. We examined levels of genetic differentiation between its two morphologically and geographically distinct subspecies, C. p. pallidus in southern Africa (population size 11 000–16 000) and C. p. venustus in eastern Africa (population size 6500). In contrast to other plover species that maintain genetic connectivity over thousands of kilometres across continental Africa, we found profound genetic differences between remote sampling sites. Phylogenetic network analysis based on four nuclear and two mitochondrial gene regions, and population genetic structure analyses based on 11 microsatellite loci, indicated strong genetic divergence, with 2.36% mitochondrial sequence divergence between individuals sampled in Namibia (southern Africa) and those of Kenya and Tanzania (eastern Africa). This distinction between southern and eastern African populations was also supported by highly distinct genetic clusters based on microsatellite markers (global FST = 0.309, math formula = 0.510, D = 0.182). Behavioural factors that may promote genetic differentiation in this species include habitat specialization, monogamous mating behaviour and sedentariness. Reliance on an extremely small number of saline lakes for breeding and limited dispersal between populations are likely to promote reproductive and genetic isolation between eastern and southern Africa. We suggest that the two Chestnut-banded Plover subspecies may warrant elevation to full species status. To assess this distinction fully, additional sample collection will be needed, with analysis of genetic and phenotypic traits from across the species’ entire breeding range.
Language eng
DOI 10.1111/ibi.12520
Field of Research 0608 Zoology
0602 Ecology
HERDC Research category C1 Refereed article in a scholarly journal
ERA Research output type C Journal article
Copyright notice ©2017, The Authors
Free to Read? Yes
Use Rights Creative Commons Attribution licence
Persistent URL http://hdl.handle.net/10536/DRO/DU:30103122

Document type: Journal Article
Collections: School of Life and Environmental Sciences
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Every reasonable effort has been made to ensure that permission has been obtained for items included in DRO. If you believe that your rights have been infringed by this repository, please contact drosupport@deakin.edu.au.