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dc.contributor.authorAndersen, Øivind
dc.contributor.authorVieira, Vera
dc.contributor.authorDessen, Jens-Erik
dc.contributor.authorJohnston, Ian A.
dc.identifier.citationAndersen , Ø , Vieira , V , Dessen , J-E & Johnston , I A 2019 , ' Influence of feed ration size on somatic and muscle growth in landlocked dwarf and farmed Atlantic salmon Salmo salar ' , Journal of Fish Biology , vol. 94 , no. 4 , pp. 614-620 .
dc.identifier.otherPURE: 257988095
dc.identifier.otherPURE UUID: 829de309-2809-4e38-bde4-98d49555ec04
dc.identifier.otherRIS: urn:70A92BF8253C08D6EEEBB8A50C370900
dc.identifier.otherORCID: /0000-0002-7796-5754/work/55643767
dc.identifier.otherScopus: 85064216195
dc.identifier.otherWOS: 000466180500008
dc.description.abstractWe examined the possible adaptation of the dwarf Bleke population of Atlantic salmon Salmo salar from Lake Byglandsfjord in southern Norway to limited food resources. The growth performance and muscle development in juvenile Bleke and farmed S. salar under satiated or restricted (50%) feeding were examined for 10 months, starting 3 weeks after first‐feeding stage. Four‐thousand fish were divided into four replicated groups and random samples of 16–40 fish per group were measured six times during the experiment. The two strains showed no significant difference in mean body mass when fed restricted ration, but the individual variation was considerably higher in the farmed fish. Both Bleke and farmed S. salar grew significantly faster when fed to satiation, but the farmed S. salar showed much higher gain in mass and were three times heavier (201.5 g v. 66.7 g) and possessed twice as many fast muscle fibres (179682 v. 84779) compared with landlocked S. salar after 10 months. Farmed fish fed full ration displayed both hypertrophic and hyperplasic muscle growth, while the increased growth in Bleke S. salar was entirely associated with a larger fibre diameter. The landlocked Bleke strain has apparently adapted to low food availability by minimising the metabolic costs of maintenance and growth through reduced dominance hierarchies and by an increase in average muscle fibre diameter relative to the ancestral condition.
dc.relation.ispartofJournal of Fish Biologyen
dc.rightsCopyright © 2019 The Fisheries Society of the British Isles. This work has been made available online in accordance with the publisher’s policies. This is the author created, accepted version manuscript following peer review and may differ slightly from the final published version. The final published version of this work is available at
dc.subjectFeed restrictionen
dc.subjectLandlocked salmonen
dc.subjectMuscle fibreen
dc.subjectQH301 Biologyen
dc.subjectSH Aquaculture. Fisheries. Anglingen
dc.titleInfluence of feed ration size on somatic and muscle growth in landlocked dwarf and farmed Atlantic salmon Salmo salaren
dc.typeJournal articleen
dc.contributor.institutionUniversity of St Andrews.School of Biologyen
dc.contributor.institutionUniversity of St Andrews.Marine Alliance for Science & Technology Scotlanden
dc.contributor.institutionUniversity of St Andrews.Scottish Oceans Instituteen
dc.contributor.institutionUniversity of St Andrews.Centre for Research into Ecological & Environmental Modellingen
dc.description.statusPeer revieweden

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