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Establishment of a coastal fish in the Azores: recent colonisation or sudden expansion of an ancient relict population?

2015-12Journal article Open access
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dc.contributor.authorStefanni, S.
dc.contributor.authorCastilho, Rita
dc.contributor.authorSala-Bozano, M.
dc.contributor.authorRobalo, J. I.
dc.contributor.authorFrancisco, S. M.
dc.contributor.authorSantos, R. S.
dc.contributor.authorMarques, N.
dc.contributor.authorBrito, A.
dc.contributor.authorAlmada, V. C.
dc.contributor.authorMariani, S.
dc.date.accessioned2018-12-07T14:52:47Z
dc.date.available2018-12-07T14:52:47Z
dc.date.issued2015-12
dc.description.abstractThe processes and timescales associated with ocean-wide changes in the distribution of marine species have intrigued biologists since Darwin's earliest insights into biogeography. The Azores, a mid-Atlantic volcanic archipelago located >1000 km off the European continental shelf, offers ideal opportunities to investigate phylogeographic colonisation scenarios. The benthopelagic sparid fish known as the common two-banded seabream (Diplodus vulgaris) is now relatively common along the coastline of the Azores archipelago, but was virtually absent before the 1990s. We employed a multiple genetic marker approach to test whether the successful establishment of the Azorean population derives from a recent colonisation from western continental/island populations or from the demographic explosion of an ancient relict population. Results from nuclear and mtDNA sequences show that all Atlantic and Mediterranean populations belong to the same phylogroup, though microsatellite data indicate significant genetic divergence between the Azorean sample and all other locations, as well as among Macaronesian, western Iberian and Mediterranean regions. The results from Approximate Bayesian Computation indicate that D. vulgaris has likely inhabited the Azores for similar to 40 (95% confidence interval (CI): 5.5-83.6) to 52 (95% CI: 6.32-89.0) generations, corresponding to roughly 80-150 years, suggesting near-contemporary colonisation, followed by a more recent demographic expansion that could have been facilitated by changing climate conditions. Moreover, the lack of previous records of this species over the past century, together with the absence of lineage separation and the presence of relatively few private alleles, do not exclude the possibility of an even more recent colonisation event.
dc.description.sponsorshipMarinERA project 'Marine phylogeographic structuring during climate change: the signature of leading and rear edge of range shifting populations'; Eco-Ethology Research Unit (Fundacao para a Ciencia e Tecnologia, FEDER) [PEst-OE/MAR/UI0331/2011]; Marie Curie Grant; EU under the FP7; Regional, National and International Programmes, GA [600407]; Bandiera Project RITMARE; FCT Grant [SFRH/BPD/84923/2012]; OE; COMPETE; FCT; DRCTC/GovAzores
dc.description.versioninfo:eu-repo/semantics/publishedVersion
dc.identifier.doi10.1038/hdy.2015.55
dc.identifier.issn0018-067X
dc.identifier.issn1365-2540
dc.identifier.urihttp://hdl.handle.net/10400.1/11209
dc.language.isoeng
dc.peerreviewedyes
dc.publisherNature Publishing Group
dc.relationBest Action for National Development of International Expert Researchers Activity
dc.relationInternational comparisons of product supply chains in the agro-food sectors: determinants of their competitiveness and performance on EU and international markets
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/
dc.subjectAtlantic-Mediterranean transition
dc.subjectCross-species amplification
dc.subjectAllele frequency data
dc.subjectDiplodus-Sargus
dc.subjectSea Bream
dc.subjectCoryphoblennius-Galerita
dc.subjectGenetic differentiation
dc.subjectComputer-program
dc.subjectMontagus Blenny
dc.subjectOblada-Melanura
dc.titleEstablishment of a coastal fish in the Azores: recent colonisation or sudden expansion of an ancient relict population?
dc.typejournal article
dspace.entity.typePublication
oaire.awardTitleBest Action for National Development of International Expert Researchers Activity
oaire.awardTitleInternational comparisons of product supply chains in the agro-food sectors: determinants of their competitiveness and performance on EU and international markets
oaire.awardURIinfo:eu-repo/grantAgreement/EC/FP7/600407/EU
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/SFRH/SFRH%2FBPD%2F84923%2F2012/PT
oaire.awardURIinfo:eu-repo/grantAgreement/EC/FP7/312029/EU
oaire.citation.endPage537
oaire.citation.issue6
oaire.citation.startPage527
oaire.citation.titleHeredity
oaire.citation.volume115
oaire.fundingStreamFP7
oaire.fundingStreamSFRH
oaire.fundingStreamFP7
person.familyNameCastilho
person.givenNameRita
person.identifier452212
person.identifier.ciencia-id0513-0407-A6C1
person.identifier.orcid0000-0003-0727-3688
person.identifier.ridB-6185-2008
person.identifier.scopus-author-id56271196600
project.funder.identifierhttp://doi.org/10.13039/501100008530
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.identifierhttp://doi.org/10.13039/501100008530
project.funder.nameEuropean Commission
project.funder.nameFundação para a Ciência e a Tecnologia
project.funder.nameEuropean Commission
rcaap.rightsopenAccess
rcaap.typearticle
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relation.isAuthorOfPublication.latestForDiscovery051f68ec-18e0-4008-b06d-bf4b996fa098
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