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dc.date.accessioned2019-12-10T19:14:22Z
dc.date.available2019-12-10T19:14:22Z
dc.date.created2018-10-15T08:27:10Z
dc.date.issued2018
dc.identifier.citationRoney, Nancy Oomen, Rebekah Alice Knutsen, Halvor Olsen, Esben Moland Hutchings, Jeffrey . Fine-Scale Population Differences in Atlantic Cod Reproductive Success: A Potential Mechanism for Ecological Speciation in a Marine Fish. Ecology and Evolution. 2018
dc.identifier.urihttp://hdl.handle.net/10852/71519
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.
dc.languageEN
dc.rightsAttribution 4.0 International
dc.rights.urihttps://creativecommons.org/licenses/by/4.0/
dc.titleFine-Scale Population Differences in Atlantic Cod Reproductive Success: A Potential Mechanism for Ecological Speciation in a Marine Fish
dc.title.alternativeENEngelskEnglishFine-Scale Population Differences in Atlantic Cod Reproductive Success: A Potential Mechanism for Ecological Speciation in a Marine Fish
dc.typeJournal article
dc.creator.authorRoney, Nancy
dc.creator.authorOomen, Rebekah Alice
dc.creator.authorKnutsen, Halvor
dc.creator.authorOlsen, Esben Moland
dc.creator.authorHutchings, Jeffrey
cristin.unitcode185,15,29,50
cristin.unitnameCentre for Ecological and Evolutionary Synthesis
cristin.ispublishedtrue
cristin.fulltextoriginal
cristin.qualitycode1
dc.identifier.cristin1620278
dc.identifier.bibliographiccitationinfo:ofi/fmt:kev:mtx:ctx&ctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=Ecology and Evolution&rft.volume=&rft.spage=&rft.date=2018
dc.identifier.jtitleEcology and Evolution
dc.identifier.volume8
dc.identifier.issue23
dc.identifier.startpage11634
dc.identifier.endpage11644
dc.identifier.pagecount11
dc.identifier.doihttps://doi.org/10.1002/ece3.4615
dc.identifier.doihttps://doi.org/10.1002/ece3.4615
dc.identifier.urnURN:NBN:no-74666
dc.type.documentTidsskriftartikkel
dc.type.peerreviewedPeer reviewed
dc.source.issn2045-7758
dc.identifier.fulltextFulltext https://www.duo.uio.no/bitstream/handle/10852/71519/1/Roney_et_al-2018-Ecology_and_Evolution.pdf
dc.type.versionPublishedVersion
dc.relation.projectNFR/143961


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