Taxonomy based on limited genomic markers may underestimate species diversity of rockhopper penguins and threaten their conservation

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dc.contributor.authorFrugone M.J.
dc.contributor.authorPoulin E.
dc.contributor.authorFrugone M.J.
dc.contributor.authorPoulin E.
dc.contributor.authorFrugone M.J.
dc.contributor.authorCole T.L.
dc.contributor.authorWaters J.M.
dc.contributor.authorCole T.L.
dc.contributor.authorLopez M.E.
dc.contributor.authorClucas G.
dc.contributor.authorClucas G.
dc.contributor.authorMatos-Maravi P.
dc.contributor.authorLois N.A.
dc.contributor.authorLois N.A.
dc.contributor.authorPistorius P.
dc.contributor.authorBonadonna F.
dc.contributor.authorTrathan P.
dc.contributor.authorPolanowski A.
dc.contributor.authorWienecke B.
dc.contributor.authorRaya-Rey A.
dc.contributor.authorRaya-Rey A.
dc.contributor.authorRaya-Rey A.
dc.contributor.authorPutz K.
dc.contributor.authorSteinfurth A.
dc.contributor.authorSteinfurth A.
dc.contributor.authorBi K.
dc.contributor.authorWang-Claypool C.Y.
dc.contributor.authorBowie R.C.K.
dc.contributor.authorVianna J.A.
dc.date.accessioned2024-01-10T12:37:09Z
dc.date.available2024-01-10T12:37:09Z
dc.date.issued2021
dc.description.abstract© 2021 The Authors. Diversity and Distributions published by John Wiley & Sons Ltd.Aim: Delimiting recently diverged species is challenging. During speciation, genetic differentiation may be distributed unevenly across the genome, as different genomic regions can be subject to different selective pressures and evolutionary histories. Reliance on limited numbers of genetic markers that may be underpowered can make species delimitation even more challenging, potentially resulting in taxonomic inconsistencies. Rockhopper penguins of the genus Eudyptes comprise three broadly recognized taxa: northern (E. moseleyi), southern (E. chrysocome) and eastern rockhopper (E. filholi). Their taxonomic status has been controversial for decades, with researchers disagreeing about whether E. chrysocome and E. filholi are distinct species or conspecific. Our goal is to evaluate genome-wide patterns of divergence to evaluate genetic differentiation and species delimitation in rockhopper penguins, and to assess which mechanisms may underlie previous discordance among nuclear versus mitochondrial analyses. Location: Sub-Antarctic and temperate coastal regions of the Southern Hemisphere. Methods: We generated reduced-representation genomic libraries using double digest restriction-site associated DNA (ddRAD) sequencing to evaluate genetic differentiation, contemporary migration rates and admixture among colonies of rockhopper penguins. Results: The extent of genetic differentiation among the three taxa was consistently higher than population-level genetic differentiation found within these and other penguin species. There was no evidence of admixture among the three taxa, suggesting the absence of ongoing gene flow among them. Species delimitation analyses based on molecular data, along with other lines of evidence, provide strong support for the taxonomic distinction of three species of rockhopper penguins. Main conclusions: Our results provide strong support for the existence of three distinct species of rockhopper penguins. The recognition of this taxonomic diversity is crucial for the management and conservation of this widely distributed species group. This study illustrates that widespread dispersive seabird lineages lacking obvious morphological differences may nevertheless have complex evolutionary histories and comprise cryptic species diversity.
dc.description.funderCzech Science Foundation
dc.description.funderCONICYT
dc.description.funderFONDECYT
dc.description.funderCzech Academy of Sciences
dc.description.funderFrench Polar Institute
dc.description.funderINACH
dc.fechaingreso.objetodigital2024-05-28
dc.format.extent2296 páginas
dc.fuente.origenScopus
dc.identifier.doi10.1111/ddi.13399
dc.identifier.eissn14724642
dc.identifier.issn14724642 13669516
dc.identifier.scopusidSCOPUS_ID:85115298472
dc.identifier.urihttps://doi.org/10.1111/ddi.13399
dc.identifier.urihttps://repositorio.uc.cl/handle/11534/76766
dc.information.autorucFacultad de Agronomía e Ingenieria Forestal; De Abreu Vianna, Juliana; 0000-0003-2330-7825; 158861
dc.issue.numero11
dc.language.isoen
dc.nota.accesocontenido completo
dc.pagina.final2296
dc.pagina.inicio2277
dc.publisherJohn Wiley and Sons Inc
dc.relation.ispartofDiversity and Distributions
dc.revistaDiversity and Distributions
dc.rightsacceso abierto
dc.subjectEudyptes
dc.subjectgenomics
dc.subjectrockhopper penguins
dc.subjectspecies delimitation
dc.titleTaxonomy based on limited genomic markers may underestimate species diversity of rockhopper penguins and threaten their conservation
dc.typeartículo
dc.volumen27
sipa.codpersvinculados158861
sipa.indexScopus
sipa.trazabilidadCarga SIPA;09-01-2024
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