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dc.contributor.authorAmundsen, Per-Arne
dc.contributor.authorSalonen, Erno
dc.contributor.authorNiva, Teuvo
dc.contributor.authorGjelland, Karl Øystein
dc.contributor.authorPræbel, Kim
dc.contributor.authorSandlund, Odd Terje
dc.contributor.authorKnudsen, Rune
dc.contributor.authorBøhn, Thomas
dc.date.accessioned2012-12-17T14:13:40Z
dc.date.available2012-12-17T14:13:40Z
dc.date.issued2012
dc.description.abstractWe explore the long-term developments in population biology and life history during the invasion and establishment of the fish species vendace Coregonus albula in a subarctic watercourse by comparing life-history traits and molecular genetic estimates between the source and the colonist population. The two populations exhibited highly contrasting life-history strategies. Relative to the source population, the colonist population was characterized by slower somatic growth rates, earlier sexual maturation at smaller individual size, higher mortality rates and a shorter life span. The two populations could also be significantly discriminated by the genetic markers. Limited founder effects were detected from heterozygote deficit and reduced allelic richness in the colonist population, but both populations were associated with relatively high genetic diversity. The study reveals that the invasion into a new environment induced large changes in life-history strategy, with typical r-selected traits being more prominent in the colonist than in the source population. We discuss the mechanisms that may explain the observed life-history differences between the source and the colonist population, and argue that the accelerated life history of the colonist population represents an adaptive pioneer strategy aimed at fast population increase during colonization and establishment.en
dc.identifier.citationBiological Invasions 14(2012) nr. 7 s. 1501-1513en
dc.identifier.cristinIDFRIDAID 911897
dc.identifier.doidoi: 10.1007/s10530-012-0175-3
dc.identifier.issn1387-3547
dc.identifier.urihttps://hdl.handle.net/10037/4691
dc.identifier.urnURN:NBN:no-uit_munin_4401
dc.language.isoengen
dc.publisherSpringer Netherlandsen
dc.rights.accessRightsopenAccess
dc.subjectVDP::Mathematics and natural science: 400::Zoology and botany: 480::Marine biology: 497en
dc.subjectVDP::Matematikk og Naturvitenskap: 400::Zoologiske og botaniske fag: 480::Marinbiologi: 497en
dc.titleInvader population speeds up life history during colonizationen
dc.typeJournal articleen
dc.typeTidsskriftartikkelen
dc.typePeer revieweden


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