Browsing Institutt for biovitenskap by Issue Date

Now showing items 1-20 of 2164

  • Predicting fish recruitment from juvenile abundance and environmental indices 
    Stige, Leif Christian; Hunsicker, Mary E.; Bailey, Kevin M.; Yaragina, Natalia A.; Hunt, George L Jr (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2013)
    Prediction of year-class strength is a critical challenge for fisheries managers. Theoretically, predictions of recruitment should be better when they are based on estimates of cohort size taken close to the age of recruitment ...
  • Extension of the match-mismatch hypothesis to predator-controlled systems 
    Durant, Joel Marcel; Hjermann, Dag Øystein; Falkenhaug, Tone; Gifford, Dian; Naustvoll, Lars Johan; Sullivan, Barbara; Beaugrand, Grégory; Stenseth, Nils Christian (Journal article / Tidsskriftartikkel / AcceptedVersion; Peer reviewed, 2013)
    Differential change in the phenology of predators and prey is a potentially important climate-mediated mechanism influencing populations. The match-mismatch hypothesis describes the effect of predator-prey population ...
  • INTRODUCTION: Impact of climate and fisheries on sub-Arctic stocks 
    Durant, Joel Marcel; Ottersen, Geir; Stenseth, Nils Christian (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2013)
    Understanding the drivers (internal and external) that determine the productivity of marine ecosystems is challenging. For example, the correct estimate of recruitment is essential to estimate fish stock abundance. In this ...
  • Population growth across heterogeneous environments: effects of harvesting and age structure 
    Durant, Joel Marcel; Hidalgo, Manuel; Rouyer, Tristan Alexander; Hjermann, Dag Øystein; Ciannelli, Lorenzo; Eikeset, Anne Marie; Yaragina, Natalia A.; Stenseth, Nils Christian (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2013)
    Population growth is affected by several factors such as climate, species interaction and harvesting pressure. However, additional complexity can arise if fishing increases the sensitivity to environmental variability. To ...
  • Phenological Changes in the Southern Hemisphere 
    Chambers, Lynda E.; Altwegg, Res; Barbraud, Christophe; Barnard, Phoebe; Beaumont, Linda J.; Crawford, Robert J. M.; Durant, Joel Marcel; Hughes, Lesley; Keatley, Marie R.; Low, Matt; Morellato, Patricia C.; Poloczanska, Elvira S.; Ruoppolo, Valeria; Vanstreels, Ralph E.T.; Woehler, Eric J.; Wolfaardt, Anton C. (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2013)
    Current evidence of phenological responses to recent climate change is substantially biased towards northern hemisphere temperate regions. Given regional differences in climate change, shifts in phenology will not be uniform ...
  • Transglutaminase 2-Specific Autoantibodies in Celiac Disease Target Clustered, N-Terminal Epitopes Not Displayed on the Surface of Cells 
    Iversen, Rasmus; Di Niro, Roberto; Stamnæs, Jorunn; Lundin, Knut E A; Wilson, Patric C.; Sollid, Ludvig Magne (Journal article / Tidsskriftartikkel / AcceptedVersion; Peer reviewed, 2013)
    The gluten-sensitive enteropathy celiac disease is tightly associated with the production of autoantibodies specific for the enzyme transglutaminase 2 (TG2)5 . The mechanisms underlying the activation of autoreactive B ...
  • Space use, climate and selective harvesting 
    Rivrud, Inger Maren (Doctoral thesis / Doktoravhandling, 2013)
    Mennesker har i lang tid forvaltet hjortevilt for ulike formål som mat, troféer eller bestandsregulering. Forvaltningen foregår gjennom ulike former for selektiv jakt. Pga. alders- og kjønnsspesifikke kvoter og jegernes ...
  • Landscape Level Variation in Tick Abundance Relative to Seasonal Migration in Red Deer 
    Qviller, Lars; Olsen, Nina Risnes; Bærum, Kim Magnus; Meisingset, Erling L.; Loe, Leif Egil; Ytrehus, Bjørnar; Viljugrein, Hildegunn; Mysterud, Atle (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2013)
    Partial migration is common among northern ungulates, typically involving an altitudinal movement for seasonally migratory individuals. The main driving force behind migration is the benefit of an extended period of access ...
  • 454 Pyrosequencing to Describe Microbial Eukaryotic Community Composition, Diversity and Relative Abundance: A Test for Marine Haptophytes 
    Egge, Elianne Sirnæs; Bittner, Lucie; Andersen, Tom; Audic, Stéphane; de Vargas, Colomban; Edvardsen, Bente (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2013)
    Next generation sequencing of ribosomal DNA is increasingly used to assess the diversity and structure of microbial communities. Here we test the ability of 454 pyrosequencing to detect the number of species present, and ...
  • Potential corridors and barriers for plague spread in central Asia 
    Wilschut, Liesbeth I; Addink, Elisabeth A; Heesterbeek, Hans; Heier, Lise; Laudisoit, Anne; Begon, Mike; Davis, Stephen; Dubyanskiy, Vladimir M; Burdelov, Leonid A; de Jong, Steven M (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2013)
    Background Plague (Yersinia pestis infection) is a vector-borne disease which caused millions of human deaths in the Middle Ages. The hosts of plague are mostly rodents, and the disease is spread by the ...
  • A bio-economic analysis of harvest control rules for the Northeast Arctic cod fishery 
    Eikeset, Anne Marie; Richter, Andries Peter; Dankel, Dorothy; Dunlop, Erin; Heino, Mikko Petteri; Dieckmann, Ulf; Stenseth, Nils Christian (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2013)
    Harvest control rules (HCRs) have been implemented for many fisheries worldwide. However, in most instances, those HCRs are not based on the explicit feedbacks between stock properties and economic considerations. This ...
  • Characterization of human ALKBH4 – an AlkB homolog with a possible function in gene regulation 
    Bjørnstad, Linn Grimsdatter (Doctoral thesis / Doktoravhandling, 2013)
  • The Lévy flight foraging hypothesis: forgetting about memory may lead to false verification of Brownian motion 
    Gautestad, Arild O.; Mysterud, Atle (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2013)
    Background. The Lévy flight foraging hypothesis predicts a transition from scale-free Lévy walk (LW) to scale-specific Brownian motion (BM) as an animal moves from resource-poor towards resource-rich environment. However, ...
  • Magnetic Compass Orientation in the European Eel 
    Durif, Caroline; Browman, Howard; Phillips, John B.; Skiftesvik, Anne Berit; Vøllestad, Leif Asbjørn; Stockhausen, Hagen (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2013)
    European eel migrate from freshwater or coastal habitats throughout Europe to their spawning grounds in the Sargasso Sea. However, their route (∼ 6000 km) and orientation mechanisms are unknown. Several attempts have been ...
  • Spatial and seasonal variation in the prevalence of Anaplasma phagocytophilum and Borrelia burgdorferi sensu lato in questing Ixodes ricinus ticks in Norway 
    Mysterud, Atle; Easterday, William Ryan; Qviller, Lars; Viljugrein, Hildegunn; Ytrehus, Bjørnar (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2013)
    Background. Understanding the variation in prevalence of Borrelia burgdorferi sensu lato (Lyme Borreliosis Spirochaetes, LBS) and Anaplasma phagocytophilum (causing tick-borne fever in ruminants and human granulocytic ...
  • TCTP is an androgen-regulated gene implicated in prostate cancer 
    Kaarbø, Mari; Storm, Margrethe; Qu, Su; Wæhre, Haakon; Risberg, Bjørn Åke; Danielsen, Håvard Emil; Saatcioglu, Fahri (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2013)
    TCTP has been implicated in a plethora of important cellular processes related to cell growth, cell cycle progression, malignant transformation and inhibition of apoptosis. In addition to these intracellular functions, ...
  • Comprehensive analysis of MHC class II genes in teleost fish genomes reveals dispensability of the peptide-loading DM system in a large part of vertebrates 
    Dijkstra, Johannes M; Grimholt, Unni; Leong, Jong; Koop, Ben F; Hashimoto, Keiichiro (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2013)
    Background Classical major histocompatibility complex (MHC) class II molecules play an essential role in presenting peptide antigens to CD4+ T lymphocytes in the acquired immune system. The non-classical ...
  • Landscape genetics and behavioural ecology of mountain nyala (Tragelaphus buxtoni) in the Southern highlands of Ethiopia 
    Meshesha, Anagaw Atickem (Doctoral thesis / Doktoravhandling, 2013)
    Many African wildlife species are at risk of extinction as a result of habitat loss and fragmentation associated with human influence. Among these is the endangered antelope, mountain nyala (Tragelaphus buxtoni), endemic ...
  • Analysis of isoform specific functions of atypical PKCɩ and PKCζ 
    Seidl, Sebastian (Doctoral thesis / Doktoravhandling, 2013)
    We investigated two proteins. PKC iota and zeta, that are involved in cancer development and metastasis of tumors. I was able to show that both proteins underly different regulation regarding their nuclear import in cells. ...
  • Unraveling the Evolution of the Atlantic Cod’s (Gadus morhua L.) Alternative Immune Strategy 
    Malmstrøm, Martin; Jentoft, Sissel; Gregers, Tone Fredsvik; Jakobsen, Kjetill Sigurd (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2013)
    Genes encoding the major histocompatibility complex (MHC) have been thought to play a vital role in the adaptive immune system in all vertebrates. The discovery that Atlantic cod (Gadus morhua) has lost important components ...