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dc.contributor.authorMura-Jornet, Isidora-
dc.contributor.authorPimentel, Carolina-
dc.contributor.authorDantas, Gisele P. M.-
dc.contributor.authorPetry, Maria V.-
dc.contributor.authorGonzález-Acuña, Daniel-
dc.contributor.authorBarbosa, Andrés-
dc.contributor.authorLowther, Andrew D.-
dc.contributor.authorKovacs, Kit M.-
dc.contributor.authorPoulin, Elie-
dc.contributor.authorVianna, Juliana A.-
dc.date.accessioned2018-06-17T03:44:43Z-
dc.date.available2018-06-17T03:44:43Z-
dc.date.issued2018-06-13-
dc.identifier.citationBMC Evolutionary Biology 18(1): 90-
dc.identifier.issn1471-2148-
dc.identifier.urihttp://hdl.handle.net/10261/166453-
dc.description.abstract[Background] Historical factors, demography, reproduction and dispersal are crucial in determining the genetic structure of seabirds. In the Antarctic marine environment, penguins are a major component of the avian biomass, dominant predators and important bioindicators of ecological change. Populations of chinstrap penguins have decreased in nearly all their breeding sites, and their range is expanding throughout the Antarctic Peninsula. Population genetic structure of this species has been studied in some colonies, but not between breeding colonies in the Antarctic Peninsula or at the species’ easternmost breeding colony (Bouvetøya).-
dc.description.abstract[Results] Connectivity, sex-biased dispersal, diversity, genetic structure and demographic history were studied using 12 microsatellite loci and a mitochondrial DNA region (HVRI) in 12 breeding colonies in the South Shetland Islands (SSI) and the Western Antarctic Peninsula (WAP), and one previously unstudied sub-Antarctic island, 3600 km away from the WAP (Bouvetøya). High genetic diversity, evidence of female bias-dispersal and a sign of population expansion after the last glacial maximum around 10,000 mya were detected. Limited population genetic structure and lack of isolation by distance throughout the region were found, along with no differentiation between the WAP and Bouvetøya (overall microsatellite FST = 0.002, p = 0.273; mtDNA FST = − 0.004, p = 0.766), indicating long distance dispersal. Therefore, genetic assignment tests could not assign individuals to their population(s) of origin. The most differentiated location was Georges Point, one of the southernmost breeding colonies of this species in the WAP.-
dc.description.abstract[Conclusions] The subtle differentiation found may be explained by some combination of low natal philopatric behavior, high rates of dispersal and/or generally high mobility among colonies of chinstrap penguins compared to other Pygoscelis species.-
dc.description.sponsorshipFinancial support for this study was provided by the Chilean Antarctic Institute (INACH T_27–10, G_06–11, RT_12–14), FONDECYT projects (1150517), CONICYT PIA ACT172065 GAB, CONICYT-PCHA/MagísterNacional/2016–22162312, National Council for Scientific and Technological Research – CNPq (n 482501/2013–8; INCT-APA 574018/2008–5) and the Spanish Ministry of Economy and Competitiveness (CGL2004–01348, CGL2007–60369, CTM2011–24427). None of the funding body had any role in the design of the study and collection, analysis and interpretation of the data, nor in the manuscript.-
dc.publisherBioMed Central-
dc.rightsopenAccess-
dc.subjectSeabirds-
dc.subjectPygoscelis antarcticus-
dc.subjectDispersal-
dc.subjectGene flow-
dc.subjectMicrosatellites-
dc.subjectD-loop-
dc.subjectSex-biased-
dc.subjectAntarctica-
dc.titleChinstrap penguin population genetic structure: one or more populations along the southern ocean?-
dc.typeartículo-
dc.identifier.doi10.1186/s12862-018-1207-0-
dc.description.peerreviewedPeer reviewed-
dc.relation.publisherversionhttps://doi.org/10.1186/s12862-018-1207-0-
dc.date.updated2018-06-17T03:44:43Z-
dc.language.rfc3066en-
dc.rights.licensehttp://creativecommons.org/licenses/by/4.0/-
dc.contributor.funderMinisterio de Economía y Competitividad (España)-
dc.contributor.funderInstituto Antártico Chileno-
dc.contributor.funderFondo Nacional de Desarrollo Científico y Tecnológico (Chile)-
dc.contributor.funderComisión Nacional de Investigación Científica y Tecnológica (Chile)-
dc.contributor.funderConsejo Nacional de Investigaciones Científicas y Técnicas (Argentina)-
dc.relation.csic-
dc.identifier.funderhttp://dx.doi.org/10.13039/501100002848es_ES
dc.identifier.funderhttp://dx.doi.org/10.13039/501100002850es_ES
dc.identifier.funderhttp://dx.doi.org/10.13039/501100003329es_ES
dc.identifier.funderhttp://dx.doi.org/10.13039/501100002923es_ES
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