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dc.contributor.authorStrøm, John Fredrik
dc.contributor.authorBøhn, Thomas
dc.contributor.authorSkjæraasen, Jon Egil
dc.contributor.authorGjelland, Karl Øystein
dc.contributor.authorKarlsen, Ørjan
dc.contributor.authorJohansen, Torild
dc.contributor.authorHanebrekke, Tanja Lexau
dc.contributor.authorBjørn, Pål Arne
dc.contributor.authorOlsen, Esben Moland
dc.date.accessioned2023-11-08T07:21:00Z
dc.date.available2023-11-08T07:21:00Z
dc.date.issued2023-07-24
dc.description.abstractMovement diversity within species represent an important but often neglected, component of biodiversity that affects ecological and genetic interactions, as well as the productivity of exploited systems. By combining individual tracking data from acoustic telemetry with novel genetic analyses, we describe the movement diversity of two Atlantic cod Gadus morhua ecotypes in two high-latitude fjord systems: the highly migratory Northeast Arctic cod (NEA cod) that supports the largest cod fishery in the world, and the more sedentary Norwegian coastal cod, which is currently in a depleted state. As predicted, coastal cod displayed a higher level of fjord residency than NEA cod. Of the cod tagged during the spawning season, NEA cod left the fjords permanently to a greater extent and earlier compared to coastal cod, which to a greater extent remained resident and left the fjords temporarily. Despite this overall pattern, horizontal movements atypical for the ecotypes were common with some NEA cod remaining within the fjords year-round and some coastal cod displaying a low fjord fidelity. Fjord residency and exit timing also differed with spawning status and body size, with spawning cod and large individuals tagged during the feeding season more prone to leave the fjords and earlier than non-spawning and smaller individuals. While our results confirm a lower fjord dependency for NEA cod, they highlight a movement diversity within each ecotype and sympatric residency between ecotypes, previously undetected by population-level monitoring. This new knowledge is relevant for the management, which should base their fisheries advice for these interacting ecotypes on their habitat use and seasonal movements.en_US
dc.identifier.citationStrøm JF, Bøhn, Skjæraasen, Gjelland, Karlsen, Johansen, Hanebrekke, Bjørn, Olsen. Movement diversity and partial sympatry of coastal and Northeast Arctic cod ecotypes at high latitudes. Journal of Animal Ecology. 2023;92(10):1966-1978en_US
dc.identifier.cristinIDFRIDAID 2170798
dc.identifier.doi10.1111/1365-2656.13989
dc.identifier.issn0021-8790
dc.identifier.issn1365-2656
dc.identifier.urihttps://hdl.handle.net/10037/31701
dc.language.isoengen_US
dc.publisherWileyen_US
dc.relation.journalJournal of Animal Ecology
dc.rights.accessRightsopenAccessen_US
dc.rights.holderCopyright 2023 The Author(s)en_US
dc.rights.urihttps://creativecommons.org/licenses/by-nc-nd/4.0en_US
dc.rightsAttribution-NonCommercial-NoDerivatives 4.0 International (CC BY-NC-ND 4.0)en_US
dc.titleMovement diversity and partial sympatry of coastal and Northeast Arctic cod ecotypes at high latitudesen_US
dc.type.versionpublishedVersionen_US
dc.typeJournal articleen_US
dc.typeTidsskriftartikkelen_US
dc.typePeer revieweden_US


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Attribution-NonCommercial-NoDerivatives 4.0 International (CC BY-NC-ND 4.0)
Med mindre det står noe annet, er denne innførselens lisens beskrevet som Attribution-NonCommercial-NoDerivatives 4.0 International (CC BY-NC-ND 4.0)