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dc.contributor.authorSvenning, Martin
dc.contributor.authorStien, Audun
dc.contributor.authorBorgstrøm, Reidar
dc.date.accessioned2024-05-10T11:16:37Z
dc.date.available2024-05-10T11:16:37Z
dc.date.issued2024-05-06
dc.description.abstractIn sympatry, juvenile brown trout (Salmo trutta) usually occupy the shallow and most productive areas (littoral zone) of lakes, while juveniles of Arctic charr (Salvelinus alpinus) are found in deeper, less productive parts. In contrast, when Arctic charr juveniles occur in allopatry, they often occupy shallow littoral areas as well. Habitat segregation has traditionally been interpreted as a trade-of between predation risk and energy gain, while the segregation of these two species has been explained by brown trout being more aggressive and competitively superior to Arctic charr. We hypothesize, however, that the marked habitat segregation between the two species may also be due to diferences in predator avoidance. Accordingly, we conducted several laboratory tests, using Arctic charr and brown trout as potential predators. Live fsh of the same species were ofered as prey, either as small charr only, small trout only, or both small charr and small trout together. Artifcial shelters were then introduced to examine the avoidance ability of prey fsh against predatory fsh. Our results showed that under these circumstances, access to shelters strongly decreased mortality in juvenile brown trout, but had no efect on juvenile Arctic charr mortality. Thus, the habitat segregation shown by sympatric juvenile Arctic charr and brown trout in lakes may be a consequence of interspecifc diferences in predator avoidance. Juvenile salmonids · Habitat use · Competition · Shelter · Predator avoidanceen_US
dc.identifier.citationSvenning M, Stien A, Borgstrøm R. Habitat segregation by sympatric juvenile Arctic charr and brown trout in shallow lake areas: a consequence of interspecifc diferences in predator avoidance?. Ichthyological Research. 2024en_US
dc.identifier.cristinIDFRIDAID 2267082
dc.identifier.doi10.1007/s10228-024-00974-0
dc.identifier.issn1341-8998
dc.identifier.issn1616-3915
dc.identifier.urihttps://hdl.handle.net/10037/33504
dc.language.isoengen_US
dc.publisherSpringer Natureen_US
dc.relation.journalIchthyological Research
dc.relation.projectIDEgen institusjon: Norwegian institute for nature research (NINA)en_US
dc.relation.projectIDEgen institusjon: The Arctic University of Norwayen_US
dc.relation.projectIDNorges forskningsråd: xxxxxxen_US
dc.rights.accessRightsopenAccessen_US
dc.rights.holderCopyright 2024 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.subjectVDP::Matematikk og naturvitenskap: 400::Zoologiske og botaniske fag: 480en_US
dc.subjectVDP::Mathematics and natural scienses: 400::Zoology and botany: 480en_US
dc.titleHabitat segregation by sympatric juvenile Arctic charr and brown trout in shallow lake areas: a consequence of interspecifc diferences in predator avoidance?en_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)