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dc.contributor.authorCerca, José
dc.contributor.authorColon, Angel G. Rivera
dc.contributor.authorFerreira, Mafalda S.
dc.contributor.authorRavinet, Mark
dc.contributor.authorNowak, Michael
dc.contributor.authorCatchen, Julian M.
dc.contributor.authorStruck, Torsten H
dc.date.accessioned2022-01-10T13:31:58Z
dc.date.available2022-01-10T13:31:58Z
dc.date.created2021-06-09T12:22:08Z
dc.date.issued2021
dc.identifier.citationPeerJ. 2021, 9 .en_US
dc.identifier.issn2167-8359
dc.identifier.urihttps://hdl.handle.net/11250/2836765
dc.description.abstractMorphologically similar species, that is cryptic species, may be similar or quasi-similar owing to the deceleration of morphological evolution and stasis. While the factors underlying the deceleration of morphological evolution or stasis in cryptic species remain unknown, decades of research in the field of paleontology on punctuated equilibrium have originated clear hypotheses. Species are expected to remain morphologically identical in scenarios of shared genetic variation, such as hybridization and incomplete lineage sorting, or in scenarios where bottlenecks reduce genetic variation and constrain the evolution of morphology. Here, focusing on three morphologically similar Stygocapitella species, we employ a whole-genome amplification method (WGA) coupled with double-digestion restriction-site associated DNA sequencing (ddRAD) to reconstruct the evolutionary history of the species complex. We explore population structure, use population-level statistics to determine the degree of connectivity between populations and species, and determine the most likely demographic scenarios which generally reject for recent hybridization. We find that the combination of WGA and ddRAD allowed us to obtain genomic-level data from microscopic eukaryotes (∼1 millimetre) opening up opportunities for those working with population genomics and phylogenomics in such taxa. The three species share genetic variance, likely from incomplete lineage sorting and ancient admixture. We speculate that the degree of shared variation might underlie morphological similarity in the Atlantic species complex.en_US
dc.language.isoengen_US
dc.publisherPeerJ
dc.rightsNavngivelse 4.0 Internasjonal*
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/deed.no*
dc.titleIncomplete lineage sorting and ancient admixture, and speciation without morphological change in ghost-worm cryptic speciesen_US
dc.typePeer revieweden_US
dc.typeJournal articleen_US
dc.description.versionpublishedVersionen_US
dc.source.pagenumber31en_US
dc.source.volume9en_US
dc.source.journalPeerJen_US
dc.identifier.doi10.7717/peerj.10896
dc.identifier.cristin1914791
cristin.ispublishedtrue
cristin.fulltextoriginal
cristin.qualitycode1


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