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dc.contributor.authorBurton, Tim
dc.contributor.authorUgedal, Ola
dc.contributor.authorKarlsson, Sten
dc.contributor.authorThorstad, Eva Bonsak
dc.contributor.authorBolstad, Geir Hysing
dc.coverage.spatialAtlanticen_US
dc.date.accessioned2024-04-24T12:25:25Z
dc.date.available2024-04-24T12:25:25Z
dc.date.created2024-04-22T09:42:47Z
dc.date.issued2024
dc.identifier.issn0706-652X
dc.identifier.urihttps://hdl.handle.net/11250/3127948
dc.description.abstractMeasurements of individual body length at different life stages are critical in understanding fish ecology and evolution. Such data can be obtained via back-calculation from measurements of fish scales or by using the size of the scale as a direct proxy for body length. Using data from Atlantic salmon, we test key assumptions associated with each approach and their implications for investigating how variation in growth earlier in life is associated with age at maturity. The scaling of scale size approximated isometry and was similar among individuals who matured at different ages——validating a key assumption of back-calculation. However, we observed that individuals genetically predisposed to delay maturation have smaller scales for their body size——challenging a key assumption of the “direct scale-size” approach. Depending on the method of body length estimation, the relationship between body length growth earlier in life and age at maturity was observed to differ. Thus, when using scale material to study the relationship between growth and maturation in salmon, we recommend back-calculation and an assumed allometric scaling coefficient. scalimetry, scale reading, scale radius, body size, vgll3, six6en_US
dc.language.isoengen_US
dc.rightsNavngivelse 4.0 Internasjonal*
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/deed.no*
dc.subjectscalimetryen_US
dc.subjectscale readingen_US
dc.subjectscale radiusen_US
dc.subjectbody sizeen_US
dc.subjectvgll3en_US
dc.subjectsix6en_US
dc.titleUsing scale-derived estimates of body size in analyses of Atlantic salmon life-history variation: a cautionary noteen_US
dc.title.alternativeUsing scale-derived estimates of body size in analyses of Atlantic salmon life-history variation: a cautionary noteen_US
dc.typePeer revieweden_US
dc.typeJournal articleen_US
dc.description.versionpublishedVersionen_US
dc.rights.holder© 2024 The Authorsen_US
dc.subject.nsiVDP::Økologi: 488en_US
dc.subject.nsiVDP::Ecology: 488en_US
dc.source.journalCanadian Journal of Fisheries and Aquatic Sciencesen_US
dc.identifier.doi10.1139/cjfas-2023-0154
dc.identifier.cristin2263303
dc.relation.projectNorges forskningsråd: 280308en_US
dc.relation.projectNorges forskningsråd: 275862en_US
dc.relation.projectAndre: Statkraft Energi ASen_US
dc.relation.projectNorges forskningsråd: 160022/F40en_US
cristin.ispublishedtrue
cristin.fulltextoriginal
cristin.qualitycode2


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