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dc.contributor.authorPræbel, Kim
dc.contributor.authorKnudsen, Rune
dc.contributor.authorSiwertsson, Anna
dc.contributor.authorKarhunen, Markku
dc.contributor.authorKahilainen, Kimmo K.
dc.contributor.authorOvaskainen, Otso
dc.contributor.authorØstbye, Kjartan
dc.contributor.authorPeruzzi, Stefano
dc.contributor.authorFevolden, Svein-Erik
dc.contributor.authorAmundsen, Per-Arne
dc.date.accessioned2013-12-16T09:42:20Z
dc.date.available2013-12-16T09:42:20Z
dc.date.issued2013
dc.identifier.citationPræbel, K., Knudsen, R., Siwertsson, A., Karhunen, M., Kahilainen, K. K., Ovaskainen, O., . . . Amundsen, P.-A. (2013). Ecological speciation in postglacial European whitefish: rapid adaptive radiations into the littoral, pelagic, and profundal lake habitats. Ecology and Evolution, 3(15), 4970-4986. doi: 10.1002/ece3.867no_NO
dc.identifier.urihttp://hdl.handle.net/11250/134632
dc.descriptionThis article is also available at onlinelibrary.wiley.comno_NO
dc.description.abstractUnderstanding how a monophyletic lineage of a species diverges into several adaptive forms has received increased attention in recent years, but the underly- ing mechanisms in this process are still under debate. Postglacial fishes are excellent model organisms for exploring this process, especially the initial stages of ecological speciation, as postglacial lakes represent replicated discrete envi- ronments with variation in available niches. Here, we combine data of niche utilization, trophic morphology, and 17 microsatellite loci to investigate the diversification process of three sympatric European whitefish morphs from three northern Fennoscandian lakes. The morphological divergence in the gill raker number among the whitefish morphs was related to the utilization of dif- ferent trophic niches and was associated with reproductive isolation within and across lakes. The intralacustrine comparison of whitefish morphs showed that these systems represent two levels of adaptive divergence: (1) a consistent littoral – pelagic resource axis; and (2) a more variable littoral – profundal resource axis. The results also indicate that the profundal whitefish morph has diverged repeatedly from the ancestral littoral whitefish morph in sympatry in two different watercourses. In contrast, all the analyses performed revealed clus- tering of the pelagic whitefish morphs across lakes suggesting parallel postglacial immigration with the littoral whitefish morph into each lake. Finally, the analy- ses strongly suggested that the trophic adaptive trait, number of gill rakers, was under diversifying selection in the different whitefish morphs. Together, the results support a complex evolutionary scenario where ecological speciation acts, but where both allopatric (colonization history) and sympatric (within watercourse divergence) processes are involved.no_NO
dc.language.isoengno_NO
dc.publisherWileyno_NO
dc.subjectCoregonus lavaretusno_NO
dc.subjectgill rakerno_NO
dc.subjectphenotype – genotype correlationno_NO
dc.subjectpostglacial fishno_NO
dc.subjectreproductive isolationno_NO
dc.titleEcological speciation in postglacial European whitefish: rapid adaptive radiations into the littoral, pelagic, and profundal lake habitatsno_NO
dc.typeJournal articleno_NO
dc.typePeer reviewedno_NO
dc.subject.nsiVDP::Agriculture and fishery disciplines: 900::Fisheries science: 920no_NO
dc.source.volume3no_NO
dc.source.journalEcology and evolutionno_NO
dc.source.issue15no_NO
dc.identifier.doi10.1002/ece3.867


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