Species delimitation without prior knowledge: DISSECT reveals extensive cryptic speciation in the Silene aegyptiaca complex (Caryophyllaceae)

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dc.contributor.authorToprak, Zeynep
dc.contributor.authorPfeil, Bernard E.
dc.contributor.authorJones, Graham
dc.contributor.authorMarcussen, Thomas
dc.contributor.authorErtekin, Alaattin Selcuk
dc.contributor.authorOxelman, Bengt
dc.date.accessioned2024-04-24T16:18:38Z
dc.date.available2024-04-24T16:18:38Z
dc.date.issued2016
dc.departmentDicle Üniversitesien_US
dc.description.abstractSpecies delimitation is a major focus of biosystematics. In recent years, considerable progress has been achieved with the development of the multispecies coalescent (MSC) model, where species constitute the branches of the species tree or network. However, researchers are faced with the limitation that the MSC method of choice often requires a priori assignment of individuals to species. This not only introduces subjectivitiy into the analyses, but may also lead to meaningless species tree hypotheses, if the allele-to-species assignments are inaccurate. DISSECT is a recently introduced method that does not require a priori allele-to-species assignments, but instead examines the posterior probabilities of groupings (clusterings) of individuals under study. Using the DISSECT approach, we analysed genetic data from 75 individual plants belonging to the Silene aegyptiaca species complex that has previously been divided into 3-5 species. Marginal likelihood estimates from *BEAST analyses, run with predefined species classifications, strongly favour those compatible with the DISSECT result over those from morphology- and geography-based taxonomy. We found at least nine species, including several cryptic ones, for which no clear geographical or morphological patterns are correlated. However, the limited data and the possibility of unmodelled processes mean there is still much uncertainty about the true number of MSC species, and for taxonomic purposes, other criteria might be relevant. Nevertheless, we argue that the approach signifies an important step towards objective and testable species delimitations in any organismal group. In particular, it makes it possible to avoid biologically irrelevant species classifications. (C) 2016 Elsevier Inc. All rights reserved.en_US
dc.description.sponsorshipSwedish Research Council [2012-3719, 2009-5206]; Lundgrenska Stiftelserna; Turkish Higher Education Board; Dicle University Scientific Research Centre [10-FF-112]; Royal Swedish Academy of Sciences [2009-5206]; Lars Hiertas Minne fund; Royal Physiographic Society in Lund; Helge Ax:son Johnsons funden_US
dc.description.sponsorshipThis work is supported by Swedish Research Council (grants: 2012-3719, 2009-5206), Lundgrenska Stiftelserna, Turkish Higher Education Board, Dicle University Scientific Research Centre (project no: 10-FF-112), Royal Swedish Academy of Sciences (2009-5206), Lars Hiertas Minne fund, The Royal Physiographic Society in Lund, and Helge Ax:son Johnsons fund. We thank to Vivian Alden, Anna Petri, and Anne-Cathrine Scheen for help and advice in the lab. We are grateful to Yann Bertrand for theoretical advice, Mats Topel for maintaining the Albiorix cluster (http://albiorix.bioenv.gu.se) on which most computer analyses were performed, the editors and reviewers for helpful comments and suggestions on previous versions of the manuscript, Herbarium GB for curating specimens, Kemal Yildiz for providing the material of Silene fraudatrix, Omer Faruk Kaya, Melik Aksal, and Mehmet Toprak for their fieldwork assistance.en_US
dc.identifier.doi10.1016/j.ympev.2016.05.024
dc.identifier.endpage8en_US
dc.identifier.issn1055-7903
dc.identifier.issn1095-9513
dc.identifier.pmid27233442
dc.identifier.scopus2-s2.0-84977605665
dc.identifier.scopusqualityQ1
dc.identifier.startpage1en_US
dc.identifier.urihttps://doi.org/10.1016/j.ympev.2016.05.024
dc.identifier.urihttps://hdl.handle.net/11468/16204
dc.identifier.volume102en_US
dc.identifier.wosWOS:000380622600001
dc.identifier.wosqualityQ1
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.indekslendigikaynakPubMed
dc.language.isoenen_US
dc.publisherAcademic Press Inc Elsevier Scienceen_US
dc.relation.ispartofMolecular Phylogenetics and Evolution
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/closedAccessen_US
dc.subjectDissecten_US
dc.subjectMultispecies Coalescenten_US
dc.subjectSection Atocionen_US
dc.subjectSileneen_US
dc.subjectS. Aegyptiacaen_US
dc.subjectSpecies Delimitationen_US
dc.titleSpecies delimitation without prior knowledge: DISSECT reveals extensive cryptic speciation in the Silene aegyptiaca complex (Caryophyllaceae)en_US
dc.titleSpecies delimitation without prior knowledge: DISSECT reveals extensive cryptic speciation in the Silene aegyptiaca complex (Caryophyllaceae)
dc.typeArticleen_US

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