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dc.contributor.authorRoney, Nancy
dc.contributor.authorOomen, Rebekah Alice
dc.contributor.authorKnutsen, Halvor
dc.contributor.authorOlsen, Esben Moland
dc.contributor.authorHutchings, Jeffrey
dc.date.accessioned2019-01-21T11:32:05Z
dc.date.available2019-01-21T11:32:05Z
dc.date.created2018-10-15T08:27:10Z
dc.date.issued2018
dc.identifier.citationEcology and Evolution. 2018, .nb_NO
dc.identifier.issn2045-7758
dc.identifier.urihttp://hdl.handle.net/11250/2581480
dc.description.abstractSuccessful resource‐management and conservation outcomes ideally depend on matching the spatial scales of population demography, local adaptation, and threat mitigation. For marine fish with high dispersal capabilities, this remains a fundamental challenge. Based on daily parentage assignments of more than 4,000 offspring, we document fine‐scaled temporal differences in individual reproductive success for two spatially adjacent (<10 km) populations of a broadcast‐spawning marine fish. Distinguished by differences in genetics and life history, Atlantic cod (Gadus morhua) from inner‐ and outer‐fjord populations were allowed to compete for mating and reproductive opportunities. After accounting for phenotypic variability in several traits, reproductive success of outer‐fjord cod was significantly lower than that of inner‐fjord cod. This finding, given that genomically different cod ecotypes inhabit inner‐ and outer‐fjord waters, raises the intriguing hypothesis that the populations might be diverging because of ecological speciation. Individual reproductive success, skewed within both sexes (more so among males), was positively affected by body size, which also influenced the timing of reproduction, larger individuals spawning later among females but earlier among males. Our work suggests that spatial mismatches between management and biological units exist in marine fishes and that studies of reproductive interactions between putative populations or ecotypes can provide an informative basis on which determination of the scale of local adaptation can be ascertained.nb_NO
dc.language.isoengnb_NO
dc.titleFine-Scale Population Differences in Atlantic Cod Reproductive Success: A Potential Mechanism for Ecological Speciation in a Marine Fishnb_NO
dc.title.alternativeFine-Scale Population Differences in Atlantic Cod Reproductive Success: A Potential Mechanism for Ecological Speciation in a Marine Fishnb_NO
dc.typeJournal articlenb_NO
dc.typePeer reviewednb_NO
dc.description.versionpublishedVersionnb_NO
dc.source.pagenumber11nb_NO
dc.source.journalEcology and Evolutionnb_NO
dc.identifier.doi10.1002/ece3.4615
dc.identifier.cristin1620278
dc.relation.projectNorges forskningsråd: 143961nb_NO
cristin.unitcode7431,0,0,0
cristin.unitcode7431,23,0,0
cristin.unitnameHavforskningsinstituttet
cristin.unitnamePopulasjonsgenetikk
cristin.ispublishedtrue
cristin.fulltextoriginal
cristin.qualitycode1


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