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dc.contributor.authorOppedal, Frode
dc.contributor.authorDempster, Tim
dc.contributor.authorStien, Lars Helge
dc.date.accessioned2011-02-11T14:25:23Z
dc.date.available2011-02-11T14:25:23Z
dc.date.issued2011-02-03
dc.identifier.issn0044-8486
dc.identifier.urihttp://hdl.handle.net/11250/108510
dc.descriptionJournal homepage: http://www.sciencedirect.com/science Artikkelen oppsummerer 20 års forskning på atferd og miljø i merder.en_US
dc.description.abstractSalmon may sense and respond to a range of environmental variables within sea-cages, including light, temperature, salinity, dissolved oxygen, water currents and certain chemical treatments used during production. Environments within sea-cages are typically highly variable in both space and time, with the greatest variation occurring with depth. Preferred swimming depths and densities of salmon are the result of active trade-offs among environmental influences and an array of internal motivational factors such as feed and perceived threats. When preferred levels of multiple environmental cues exist at different depths, behavioural responses to temperature, light, the entry of feed, oxygen levels or the presence of treatment chemicals may dominate and override behavioural responses to all other drivers and determine swimming depths. Behavioural trade-offs in response to environmental drivers typically result in schooling at specific depths within sea-cages at densities 1.5 to 5 times their stocked density, and up to 20 times in extreme cases. Understanding the spatial and temporal variability of key environmental variables within sea-cages and how salmon respond to them may enable modifications to sea-cage environments to improve welfare outcomes, feeding regimes, artificial light management strategies and the efficacy of sea-lice treatments.en_US
dc.language.isoengen_US
dc.publisherElsevieren_US
dc.subjectaquacultureen_US
dc.subjectakvakulturen_US
dc.subjectatlantic salmonen_US
dc.subjectatlantisk laksen_US
dc.subjectsalmon liceen_US
dc.subjectlakselusen_US
dc.subjectfeedingen_US
dc.subjectfôringen_US
dc.titleEnvironmental drivers of Atlantic salmon behaviour in sea-cages: a reviewen_US
dc.typeJournal articleen_US
dc.typePeer revieweden_US
dc.subject.nsiVDP::Agriculture and fishery disciplines: 900::Fisheries science: 920::Aquaculture: 922en_US
dc.source.pagenumber1-18en_US
dc.source.volume311
dc.source.journalAquaculture
dc.source.issue1-4
dc.identifier.doihttp://dx.doi.org/10.1016/j.aquaculture.2010.11.020


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