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dc.contributor.authorKettemer, Lisa Elena
dc.contributor.authorRamm, Theresia
dc.contributor.authorBroms, Fredrik Björn
dc.contributor.authorBiuw, Martin
dc.contributor.authorBlanchet, Marie-Anne
dc.contributor.authorBourgeon, Sophie
dc.contributor.authorDubourg, Paul
dc.contributor.authorEllendersen, Anna C. J.
dc.contributor.authorHoraud, Mathilde
dc.contributor.authorKershaw, Joanna
dc.contributor.authorMiller, Patrick J. O.
dc.contributor.authorØien, Nils Inge
dc.contributor.authorPallin, Logan J.
dc.contributor.authorRikardsen, Audun H.
dc.date.accessioned2023-10-13T12:42:36Z
dc.date.available2023-10-13T12:42:36Z
dc.date.issued2023-09-06
dc.description.abstractMigration patterns are fundamentally linked to the spatiotemporal distributions of prey. How migrating animals can respond to changes in their prey’s distribution and abundance remains largely unclear. During the last decade, humpback whales (Megaptera novaeangliae) used specific winter foraging sites in fjords of northern Norway, outside of their main summer foraging season, to feed on herring that started overwintering in the area. We used photographic matching to show that whales sighted during summer in the Barents Sea foraged in northern Norway from late October to February, staying up to three months and showing high inter-annual return rates (up to 82%). The number of identified whales in northern Norway totalled 866 individuals by 2019. Genetic sexing and hormone profiling in both areas demonstrate a female bias in northern Norway and suggest higher proportions of pregnancy in northern Norway. This may indicate that the fjord-based winter feeding is important for pregnant females before migration. Our results suggest that humpback whales can respond to foraging opportunities along their migration pathways, in some cases by continuing their feeding season well into winter. This provides an important reminder to implement dynamic ecosystem management that can account for changes in the spatio-temporal distribution of migrating marine mammals.en_US
dc.identifier.citationKettemer, Ramm, Broms, Biuw, Blanchet, Bourgeon, Dubourg, Ellendersen, Horaud, Kershaw, Miller, Øien, Pallin, Rikardsen. Don't mind if I do: Arctic humpback whales respond to winter foraging opportunities before migration. Royal Society Open Science. 2023;10(9)en_US
dc.identifier.cristinIDFRIDAID 2182092
dc.identifier.doi10.1098/rsos.230069
dc.identifier.issn2054-5703
dc.identifier.urihttps://hdl.handle.net/10037/31552
dc.language.isoengen_US
dc.relation.ispartofKettemer, L.E. (2023). Migration Ecology of North Atlantic Humpback Whales: Mapping Movements throughout the Annual Cycle. (Doctoral thesis). <a href=https://hdl.handle.net/10037/31692>https://hdl.handle.net/10037/31692</a>.
dc.relation.journalRoyal Society Open Science
dc.rights.accessRightsopenAccessen_US
dc.rights.holderCopyright 2023 The Author(s)en_US
dc.rights.urihttps://creativecommons.org/licenses/by/4.0en_US
dc.rightsAttribution 4.0 International (CC BY 4.0)en_US
dc.titleDon't mind if I do: Arctic humpback whales respond to winter foraging opportunities before migrationen_US
dc.type.versionpublishedVersionen_US
dc.typeJournal articleen_US
dc.typeTidsskriftartikkelen_US
dc.typePeer revieweden_US


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