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dc.contributor.authorSimonsen, Marianne
dc.contributor.authorSiwertsson, Anna
dc.contributor.authorAdams, Colin Ean
dc.contributor.authorAmundsen, Per-Arne
dc.contributor.authorPræbel, Kim
dc.contributor.authorKnudsen, Rune
dc.date.accessioned2018-03-16T07:31:07Z
dc.date.available2018-03-16T07:31:07Z
dc.date.issued2017-08-08
dc.description.abstractA study of body and head development in three sympatric reproductively isolated Arctic charr (Salvelinus alpinus (L.)) morphs from a subarctic lake (Skogsfjordvatn, northern Norway) revealed allometric trajectories that resulted in morphological differences. The three morphs were ecologically assigned to a littoral omnivore, a profundal benthivore and a profundal piscivore, and this was confirmed by genetic analyses (microsatellites). Principal component analysis was used to identify the variables responsible for most of the morphological variation of the body and head shape. The littoral omnivore and the profundal piscivore morph had convergent allometric trajectories for the most important head shape variables, developing bigger mouths and relatively smaller eyes with increasing head size. The two profundal morphs shared common trajectories for the variables explaining most of the body and head shape variation, namely head size relative to body size, placement of the dorsal and pelvic fins, eye size and mouth size. In contrast, the littoral omnivore and the profundal benthivore morphs were not on common allometric trajectories for any of the examined variables. The findings suggest that different selective pressures could have been working on traits related to their trophic niche such as habitat and diet utilization of the three morphs, with the two profundal morphs experiencing almost identical environmental conditions.en_US
dc.descriptionSource at <a href=https://doi.org/10.1002/ece3.3224> https://doi.org/10.1002/ece3.3224 </a>.en_US
dc.identifier.citationSimonsen, M., Siwertsson, A., Adams, C.E., Amundsen, P.A., Præbel, K. & Knudsen, R. (2017). Allometric trajectories of body and head morphology in three sympatric Arctic charr (Salvelinus alpinus (L.)) morphs. Ecology and Evolution, 7(18), 7277-7289.en_US
dc.identifier.cristinIDFRIDAID 1485175
dc.identifier.doi10.1002/ece3.3224
dc.identifier.issn2045-7758
dc.identifier.urihttps://hdl.handle.net/10037/12354
dc.language.isoengen_US
dc.publisherWiley Open Accessen_US
dc.relation.journalEcology and Evolution
dc.rights.accessRightsopenAccessen_US
dc.subjectniche segregationen_US
dc.subjectphenotypic diversityen_US
dc.subjectpolymorphismen_US
dc.subjectsalmonidsen_US
dc.subjectVDP::Matematikk og Naturvitenskap: 400::Basale biofag: 470en_US
dc.subjectVDP::Matematikk og Naturvitenskap: 400::Basale biofag: 470en_US
dc.titleAllometric trajectories of body and head morphology in three sympatric Arctic charr (Salvelinus alpinus (L.)) morphsen_US
dc.typeJournal articleen_US
dc.typeTidsskriftartikkelen_US
dc.typePeer revieweden_US


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