A
Anna Siwertsson
Researcher at University of Tromsø
Publications - 24
Citations - 930
Anna Siwertsson is an academic researcher from University of Tromsø. The author has contributed to research in topics: Population & Profundal zone. The author has an hindex of 16, co-authored 24 publications receiving 811 citations. Previous affiliations of Anna Siwertsson include Norwegian College of Fishery Science.
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Journal ArticleDOI
Ecological speciation in postglacial European whitefish: rapid adaptive radiations into the littoral, pelagic, and profundal lake habitats
Kim Præbel,Rune Knudsen,Anna Siwertsson,Markku Karhunen,Kimmo K. Kahilainen,Otso Ovaskainen,Kjartan Østbye,Kjartan Østbye,Stefano Peruzzi,Svein-Erik Fevolden,Per-Arne Amundsen +10 more
TL;DR: The analyses strongly suggested that the trophic adaptive trait, number of gill rakers, was under diversifying selection in the different whitefish morphs, supporting a complex evolutionary scenario where ecological speciation acts, but where both allopatric and sympatric processes are involved.
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The role of gill raker number variability in adaptive radiation of coregonid fish
Kimmo K. Kahilainen,Anna Siwertsson,Karl Øystein Gjelland,Rune Knudsen,Thomas Bøhn,Per-Arne Amundsen +5 more
TL;DR: It is argued that zooplankton feeding leads to an eco-evolutionary feedback loop that may further shape the gill raker morphology since natural selection intensifies under resource competition for depleted prey communities.
Journal Article
Sympatric diversification as influenced by ecological opportunity and historical contingency in a young species lineage of whitefish
Anna Siwertsson,Rune Knudsen,Kimmo K. Kahilainen,Kim Præbel,Raul Primicerio,Per-Arne Amundsen +5 more
TL;DR: This article is part of Anna Siwertsons' doctoral thesis, which aims to clarify the role of language in education and how it can be used to improve the quality of life for children with learning disabilities.
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Molecular analyses reveal high species diversity of trematodes in a sub-Arctic lake.
Miroslava Soldánová,Simona Georgieva,Jana Roháčová,Rune Knudsen,Jesper A. Kuhn,Eirik Haugstvedt Henriksen,Anna Siwertsson,Jenny C. Shaw,Armand M. Kuris,Per-Arne Amundsen,Tomáš Scholz,Kevin D. Lafferty,Aneta Kostadinova +12 more
TL;DR: The findings increase the known trematode diversity at the sub-Arctic Lake Takvatn, showing that digenean diversity is high in this otherwise depauperate sub- Arctic freshwater ecosystem and indicating that sub- arctic and Arctic ecosystems may be characterised by unique trematodes assemblages.
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Morphological divergence between three Arctic charr morphs - the significance of the deep-water environment.
TL;DR: The development of morphological differences within the same deep-water habitat for the PB- and PP-morphs highlights the potential of biotic factors and ecological interactions to promote further divergence in the evolution of polymorphism in a tentative incipient speciation process.