Where and when does a ring start and end? Testing the ring-species hypothesis in a species complex of Australian parrots Joseph, Leo, Dolman, Gaynor, Donnellan, Stephen, Saint, Kathleen M., Berg, Mathew L. and Bennett, Andrew T. D. 2008, Where and when does a ring start and end? Testing the ring-species hypothesis in a species complex of Australian parrots, Proceedings of the Royal Society B-biological sciences, vol. 275, no. 1650, pp. 2431-2440, doi: 10.1098/rspb.2008.0765. Attached Files Name Description MIMEType Size Downloads Title Where and when does a ring start and end? Testing the ring-species hypothesis in a species complex of Australian parrots Author(s) Joseph, Leo Dolman, Gaynor Donnellan, Stephen Saint, Kathleen M. Berg, Mathew L. orcid.org/0000-0002-5774-3089 Bennett, Andrew T. D. orcid.org/0000-0001-8512-2805 Journal name Proceedings of the Royal Society B-biological sciences Volume number 275 Issue number 1650 Start page 2431 End page 2440 Total pages 10 Publisher The Royal Society Place of publication London, England Publication date 2008-11-07 ISSN 0962-8452 1471-2954 Keyword(s) ring species landscape genetics phylogeography speciation Platycercus elegans Crimson Rosella Summary Speciation, despite ongoing gene flow can be studied directly in nature in ring species that comprise two reproductively isolated populations connected by a chain or ring of intergrading populations. We applied three tiers of spatio-temporal analysis (phylogeny/historical biogeography, phylogeography and landscape/population genetics) to the data from mitochondrial and nuclear genomes of eastern Australian parrots of the Crimson Rosella Platycercus elegans complex to understand the history and present genetic structure of the ring they have long been considered to form. A ring speciation hypothesis does not explain the patterns we have observed in our data (e.g. multiple genetic discontinuities, discordance in genotypic and phenotypic assignments where terminal differentiates meet). However, we cannot reject that a continuous circular distribution has been involved in the group's history or indeed that one was formed through secondary contact at the 'ring's' east and west; however, we reject a simple ring-species hypothesis as traditionally applied, with secondary contact only at its east. We discuss alternative models involving historical allopatry of populations. We suggest that population expansion shown by population genetics parameters in one of these isolates was accompanied by geographical range expansion, secondary contact and hybridization on the eastern and western sides of the ring. Pleistocene landscape and sea-level and habitat changes then established the birds' current distributions and range disjunctions. Populations now show idiosyncratic patterns of selection and drift. We suggest that selection and drift now drive evolution in different populations within what has been considered the ring. Language eng DOI 10.1098/rspb.2008.0765 Field of Research 059999 Environmental Sciences not elsewhere classified Socio Economic Objective 970105 Expanding Knowledge in the Environmental Sciences HERDC Research category C1.1 Refereed article in a scholarly journal Copyright notice ©2008, The Royal Society Persistent URL http://hdl.handle.net/10536/DRO/DU:30022779 Document type: Journal Article Collections: Faculty of Arts and Education Faculty of Science, Engineering and Built Environment School of Life and Environmental Sciences Higher Education Research Group Centre for Integrative Ecology Related Links Link Description Connect to published version (restricted access) Go to link with your DU access privileges     Unless expressly stated otherwise, the copyright for items in DRO is owned by the author, with all rights reserved. Versions Version Filter Type Thu, 28 Jan 2010, 10:09:49 EST Mon, 01 Feb 2010, 13:57:39 EST Mon, 01 Feb 2010, 13:58:15 EST Mon, 05 Apr 2010, 21:00:57 EST Wed, 04 Jun 2014, 15:44:05 EST Wed, 04 Jun 2014, 15:45:15 EST Fri, 06 Jun 2014, 15:32:29 EST Mon, 30 Jun 2014, 10:23:36 EST Filtered Full Citation counts:   Cited 71 times in TR Web of Science Cited 75 times in Scopus Search Google Scholar Access Statistics: 936 Abstract Views, 0 File Downloads  -  Detailed Statistics Created: Thu, 28 Jan 2010, 10:09:49 EST

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