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dc.contributor.authorBarth, Julia Maria Isis
dc.contributor.authorVillegas-Ríos, David
dc.contributor.authorFreitas, Carla
dc.contributor.authorMoland, Even
dc.contributor.authorStar, Bastiaan
dc.contributor.authorAndré, Carl
dc.contributor.authorKnutsen, Halvor
dc.contributor.authorBradbury, Ian
dc.contributor.authorDierking, Jan
dc.contributor.authorPetereit, Christoph
dc.contributor.authorRighton, David
dc.contributor.authorMetcalfe, Julian
dc.contributor.authorJakobsen, Kjetill Sigurd
dc.contributor.authorOlsen, Esben Moland
dc.contributor.authorJentoft, Sissel
dc.date.accessioned2019-05-23T11:43:11Z
dc.date.available2019-05-23T11:43:11Z
dc.date.created2019-01-18T16:04:29Z
dc.date.issued2019
dc.identifier.citationMolecular Ecology. 2019, 28 (6), 1394-1411.nb_NO
dc.identifier.issn0962-1083
dc.identifier.urihttp://hdl.handle.net/11250/2598563
dc.description.abstractGenetic divergence among populations arises through natural selection or drift and is counteracted by connectivity and gene flow. In sympatric populations, isolating mechanisms are thus needed to limit the homogenizing effects of gene flow to allow for adaptation and speciation. Chromosomal inversions act as an important mechanism maintaining isolating barriers, yet their role in sympatric populations and divergence with gene flow is not entirely understood. Here, we revisit the question of whether inversions play a role in the divergence of connected populations of the marine fish Atlantic cod (Gadus morhua), by exploring a unique data set combining whole‐genome sequencing data and behavioural data obtained with acoustic telemetry. Within a confined fjord environment, we find three genetically differentiated Atlantic cod types belonging to the oceanic North Sea population, the western Baltic population and a local fjord‐type cod. Continuous behavioural tracking over 4 year revealed temporally stable sympatry of these types within the fjord. Despite overall weak genetic differentiation consistent with high levels of gene flow, we detected significant frequency shifts of three previously identified inversions, indicating an adaptive barrier to gene flow. In addition, behavioural data indicated that North Sea cod and individuals homozygous for the LG12 inversion had lower fitness in the fjord environment. However, North Sea and fjord‐type cod also occupy different depths, possibly contributing to prezygotic reproductive isolation and representing a behavioural barrier to gene flow. Our results provide the first insights into a complex interplay of genomic and behavioural isolating barriers in Atlantic cod and establish a new model system towards an understanding of the role of genomic structural variants in adaptation and diversification.nb_NO
dc.language.isoengnb_NO
dc.titleDisentangling structural genomic and behavioral barriers in a sea of connectivitynb_NO
dc.typeJournal articlenb_NO
dc.typePeer reviewednb_NO
dc.description.versionacceptedVersionnb_NO
dc.description.versionpublishedVersionnb_NO
dc.source.pagenumber1394-1411nb_NO
dc.source.volume28nb_NO
dc.source.journalMolecular Ecologynb_NO
dc.source.issue6nb_NO
dc.identifier.doi10.1111/mec.15010
dc.identifier.cristin1660602
dc.relation.projectEC/FP7/625852nb_NO
dc.relation.projectNorges forskningsråd: 280453nb_NO
dc.relation.projectNorges forskningsråd: 221734nb_NO
cristin.unitcode7431,28,0,0
cristin.unitcode7431,23,0,0
cristin.unitnameBunnsamfunn og kystinteraksjon
cristin.unitnamePopulasjonsgenetikk
cristin.ispublishedtrue
cristin.fulltextpostprint
cristin.fulltextoriginal
cristin.qualitycode2


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