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Broad-scale sampling of primary freshwater fish populations reveals the role of intrinsic traits, inter-basin connectivity, drainage area and latitude on shaping contemporary patterns of genetic diversity

2016Journal article Open access
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dc.contributor.authorSantos, Carla Sousa
dc.contributor.authorRobalo, Joana Isabel
dc.contributor.authorPereira, Ana Martins
dc.contributor.authorBranco, Paulo
dc.contributor.authorSantos, José Maria
dc.contributor.authorFerreira, Maria Teresa
dc.contributor.authorSousa, Mónica
dc.contributor.authorDoadrio, Ignacio
dc.date.accessioned2016-04-11T17:22:33Z
dc.date.available2016-04-11T17:22:33Z
dc.date.issued2016
dc.description.abstractBackground. Worldwide predictions suggest that up to 75% of the freshwater fish species occurring in rivers with reduced discharge could be extinct by 2070 due to the combined effect of climate change and water abstraction. The Mediterranean region is considered to be a hotspot of freshwater fish diversity but also one of the regions where the effects of climate change will be more severe. Iberian cyprinids are currently highly endangered, with over 68% of the species raising some level of conservation concern. Methods. During the FISHATLAS project, the Portuguese hydrographical network was extensively covered (all the 34 river basins and 47 sub-basins) in order to contribute with valuable data on the genetic diversity distribution patterns of native cyprinid species. A total of 188 populations belonging to 16 cyprinid species of Squalius, Luciobarbus, Achondrostoma, Iberochondrostoma, Anaecypris and Pseudochondrostoma were characterized, for a total of 3,678 cytochrome b gene sequences. Results. When the genetic diversity of these populations was mapped, it highlighted differences among populations from the same species and between species with identical distribution areas. Factors shaping the contemporary patterns of genetic diversity were explored and the results revealed the role of latitude, inter-basin connectivity, migratory behaviour, species maximum size, species range and other species intrinsic traits in determining the genetic diversity of sampled populations. Contrastingly, drainage area and hydrological regime (permanent vs. temporary) seem to have no significant effect on genetic diversity. Species intrinsic traits, maximum size attained, inter-basin connectivity and latitude explained over 30% of the haplotype diversity variance and, generally, the levels of diversity were significantly higher for smaller sized species, from connected and southerly river basins. Discussion. Targeting multiple co-distributed species of primary freshwater fish allowed us to assess the relative role of historical versus contemporary factors affecting genetic diversity. Since different patterns were detected for species with identical distribution areas we postulate that contemporary determinants of genetic diversity (species' intrinsic traits and landscape features) must have played a more significant role than historical factors. Implications for conservation in a context of climate change and highly disturbed habitats are detailed, namely the need to focus management and conservation actions on intraspecific genetic data and to frequently conduct combined genetic and demographic surveys.pt_PT
dc.description.sponsorshipFundação para a Ciência e a Tecnologia (FCT)pt_PT
dc.identifier.citationPeerJ, 4, e1694. doi:10.7717/peerj.1694pt_PT
dc.identifier.doi10.7717/peerj.1694pt_PT
dc.identifier.issn2167-8359
dc.identifier.urihttp://hdl.handle.net/10400.12/4519
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.publisherPeerJpt_PT
dc.relationStrategic Project - UI 331 - 2011-2012
dc.relationESTUDO DA DIVERSIDADE GENÉTICA A NÍVEL NACIONAL DAS ESPÉCIES DE PEIXES DULCIAQUÍCOLAS NATIVAS CRITICA- MENTE AMEAÇADAS DE EXTINÇÃO E IMPLEMENTAÇÃO DE PROGRAMAS DE REPRODUÇÃO EX SITU
dc.relationFRESHWATER FISH RESPONSES TO MULTIPLE STRESSORS - Re-Connect - Enhancing connectivity of freshwater networks for river
dc.subjectCyprinidaept_PT
dc.subjectHaplotype diversitypt_PT
dc.subjectNucleotide diversitypt_PT
dc.subjectMediterranean streamspt_PT
dc.subjectFreshwater fish conservationpt_PT
dc.subjectGenetic diversity driverspt_PT
dc.subjectEndangered speciespt_PT
dc.titleBroad-scale sampling of primary freshwater fish populations reveals the role of intrinsic traits, inter-basin connectivity, drainage area and latitude on shaping contemporary patterns of genetic diversitypt_PT
dc.typejournal article
dspace.entity.typePublication
oaire.awardTitleStrategic Project - UI 331 - 2011-2012
oaire.awardTitleESTUDO DA DIVERSIDADE GENÉTICA A NÍVEL NACIONAL DAS ESPÉCIES DE PEIXES DULCIAQUÍCOLAS NATIVAS CRITICA- MENTE AMEAÇADAS DE EXTINÇÃO E IMPLEMENTAÇÃO DE PROGRAMAS DE REPRODUÇÃO EX SITU
oaire.awardTitleFRESHWATER FISH RESPONSES TO MULTIPLE STRESSORS - Re-Connect - Enhancing connectivity of freshwater networks for river
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/6817 - DCRRNI ID/PEst-OE%2FMAR%2FUI0331%2F2011/PT
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/3599-PPCDT/PTDC%2FAAC-CLI%2F103110%2F2008/PT
oaire.awardURIinfo:eu-repo/grantAgreement/FCT//SFRH%2FBPD%2F29774%2F2006/PT
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/SFRH/SFRH%2FBD%2F44938%2F2008/PT
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/OE/SFRH%2FBPD%2F94686%2F2013/PT
oaire.citation.conferencePlaceLondonpt_PT
oaire.citation.endPage28pt_PT
oaire.citation.startPage1pt_PT
oaire.citation.titlePeerJpt_PT
oaire.citation.volume4pt_PT
oaire.fundingStream6817 - DCRRNI ID
oaire.fundingStream3599-PPCDT
oaire.fundingStreamSFRH
oaire.fundingStreamOE
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.nameFundação para a Ciência e a Tecnologia
project.funder.nameFundação para a Ciência e a Tecnologia
project.funder.nameFundação para a Ciência e a Tecnologia
project.funder.nameFundação para a Ciência e a Tecnologia
project.funder.nameFundação para a Ciência e a Tecnologia
rcaap.rightsopenAccesspt_PT
rcaap.typearticlept_PT
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relation.isProjectOfPublication.latestForDiscovery848de729-c76b-4a1a-a57b-90b33554833e

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