Blar i Department of Biological Sciences på tittel

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    • Evaluation of potential reference genes in real-time RT-PCR studies of Atlantic salmon 

      Olsvik, Pål A.; Lie, Kai Kristoffer; Olderbakk Jordal, Anne-Lise; Nilsen, Tom Ole; Hordvik, Ivar (Peer reviewed; Journal article, 2005)
      Background: Salmonid fishes are among the most widely studied model fish species but reports on systematic evaluation of reference genes in qRT-PCR studies is lacking. Results: The stability of six potential reference genes ...

    • Evidence for light-controlled migration amplitude of a sound scattering layer in the Norwegian Sea 

      Norheim, Eirik; Klevjer, Thor A.; Aksnes, Dag Lorents (Peer reviewed; Journal article, 2016)
      The oceanic sound scattering layer (SL) is an ubiquitous acoustic signature of mesopelagic fishes and invertebrates that are important food sources for the oceanic macrofauna and players in the biological carbon pump. We ...

    • Evidence of diel vertical migration in Mnemiopsis leidyi 

      Haraldsson, Matilda; Båmstedt, Ulf; Tiselius, Peter; Titelman, Josefin; Aksnes, Dag Lorents (Peer reviewed; Journal article, 2014-01-22)
      The vertical distribution and migration of plankton organisms may have a large impact on their horizontal dispersal and distribution, and consequently on trophic interactions. In this study we used video-net profiling to ...

    • Evidence that Listeria innocua modulates its membrane’s stored curvature elastic stress, but not fluidity, through the cell cycle 

      Furse, Samuel Robert; Jakubec, Martin; Rise, Frode; Williams, Huw E.; Rees, Catherine E.D.; Halskau, Øyvind (Peer reviewed; Journal article, 2017-08-14)
      This paper reports that the abundances of endogenous cardiolipin and phosphatidylethanolamine halve during elongation of the Gram-positive bacterium Listeria innocua. The lyotropic phase behaviour of model lipid systems ...

    • An EvoDevo Study of Salmonid Visual Opsin Dynamics and Photopigment Spectral Sensitivity 

      Eilertsen, Mariann; Davies, Wayne I. L.; Patel, Dharmeshkumar; Barnes, Jonathan E.; Karlsen, Rita; Mountford, Jessica Kate; Stenkamp, Deborah; Patel, Jagdish Suresh; Helvik, Jon Vidar (Journal article; Peer reviewed, 2022)
      Salmonids are ideal models as many species follow a distinct developmental program from demersal eggs and a large yolk sac to hatching at an advanced developmental stage. Further, these economically important teleosts ...

    • Evolution of a portfolio-based design in ecology: a three-year design cycle 

      Esterhazy, Rachelle; Fiksen, Øyvind (Peer reviewed; Journal article, 2019)
      Portfolio-based designs are among the most popular student-centered approaches in higher education. While the pedagogical literature typically provides generic advice on ideal portfolio-based designs, there is little ...

    • Evolution of age and length at maturation of Alaskan salmon under size-selective harvest 

      Kendall, Neala W.; Dieckmann, Ulf; Heino, Mikko Petteri; Punt, André E.; Quinn, Thomas P. (Peer reviewed; Journal article, 2014-02)
      Spatial and temporal trends and variation in life-history traits, including age and length at maturation, can be influenced by environmental and anthropogenic processes, including size-selective exploitation. Spawning ...

    • The evolution of insular woodiness 

      Zizka, Alexander; Onstein, Renske E.; Rozzi, Roberto; Weigelt, Patrick; Kreft, Holger; Steinbauer, Manuel; Bruelheide, Helge; Lens, Frederic (Journal article; Peer reviewed, 2022)
      Insular woodiness (IW)—the evolutionary transition from herbaceousness toward woodiness on islands—is one of the most iconic features of island floras. Since pioneering work by Darwin and Wallace, a number of drivers of ...

    • Evolution of reproduction periods in seasonal environments 

      Sun, Zepeng; Parvinen, Kalle; Heino, Mikko Petteri; Metz, Johan A.J.; de Roos, André M.; Dieckmann, Ulf (Journal article; Peer reviewed, 2020)
      Many species are subject to seasonal cycles in resource availability, affecting the timing of their reproduction. Using a stage-structured consumer-resource model in which juvenile development and maturation are resource ...

    • Evolution of temperature optimum in Thermotogaceae and the prediction of trait values of uncultured organisms 

      Dahle, Håkon; Hannisdal, Bjarte; Steinsbu, Bjørn Olav; Ommedal, Hege; Einen, Jørn; Jensen, Sigmund; Larsen, Øyvind; Øvreås, Lise; Norland, Svein (Peer reviewed; Journal article, 2011-06-03)
      Quantitative characterization of the mode and rate of phenotypic evolution is rarely applied to prokaryotes. Here, we present an analysis of temperature optimum (Topt) evolution in the thermophilic family Thermotogaceae, ...

    • The evolution of the metazoan Toll receptor family and its expression during protostome development 

      Alcalde, Andrea Orus; Lu, Tsai-Ming; Børve, Aina; Hejnol, Andreas (Journal article; Peer reviewed, 2021)
      Background: Toll-like receptors (TLRs) play a crucial role in immunity and development. They contain leucine-rich repeat domains, one transmembrane domain, and one Toll/IL-1 receptor domain. TLRs have been classified into ...

    • Evolution of the Pax-Six-Eya-Dach network: the calcisponge case study 

      Fortunato, Sofia; Leininger, Sven Dirk; Adamska, Maja (Peer reviewed; Journal article, 2014-06-23)
      Background: The Pax-Six-Eya-Dach network (PSEDN) is involved in a variety of developmental processes, including well documented roles in determination of sensory organs and morphogenesis in bilaterian animals. Expression ...

    • Evolution of vegetation and climate variability on the Tibetan Plateau over the past 1.74 million years 

      Zhao, Yan; Tzedakis, P. Chronis; Li, Quan; Qin, Feng; Cui, Qiaoyu; Liang, Chen; Birks, Harry John Betteley; Liu, Yaoliang; Zhang, Zhiyong; Ge, Junyi; Zhao, Hui; Felde, Vivian Astrup; Deng, Chenglong; Cai, Maotang; Li, Huan; Ren, Weihe; Wei, Haicheng; Yang, Hanfei; Zhang, Jiawu; Yu, Zicheng; Guo, Zhengtang (Journal article; Peer reviewed, 2020)
      The Tibetan Plateau exerts a major influence on Asian climate, but its long-term environmental history remains largely unknown. We present a detailed record of vegetation and climate changes over the past 1.74 million years ...

    • Evolutionary and developmental perspective on annelid eye and nervous system: Insights from Malacoceros fuliginosus 

      Kumar, Suman (Doctoral thesis, 2019-11-25)
      Eye evolution is far from resolved and despite the considerable interest and decades of study, many questions remain on the evolutionary scenarios of eyes and photoreceptor cells. While examining their ultrastructure has ...

    • The evolutionary diversity of barnacles, with an updated classification of fossil and living forms 

      Chan, Benny K. K; Dreyer, Niklas; Gale, Andy S; Glenner, Henrik; Ewers-Saucedo, Christine; Pérez-Losada, Marcos; Kolbasov, Gregory A; Crandall, Keith A; Høeg, Jens T (Journal article; Peer reviewed, 2021)
      We present a comprehensive revision and synthesis of the higher-level classification of the barnacles (Crustacea: Thecostraca) to the genus level and including both extant and fossils forms. We provide estimates of the ...

    • Evolutionary drivers of kype size in atlantic salmon (salmo salar): domestication, age and genetics 

      Perry, William; Solberg, Monica Favnebøe; Besnier, Francois; Dyrhovden, Lise; Matre, Ivar Helge; Fjelldal, Per Gunnar; Ayllon, Fernando; Creer, Simon; Llewellyn, Martin; Taylor, Martin I.; Carvalho, Gary; Glover, Kevin (Peer reviewed; Journal article, 2019-04-17)
      The diversity of reproduction and associated mating patterns in Atlantic salmon (Salmo salar) has long captivated evolutionary biologists. Salmo salar exhibit strategies involving migration, bold mating behaviours and ...

    • Evolutionary effects of fishing gear on foraging behavior and life-history traits 

      Claireaux, Marion; Jørgensen, Christian; Enberg, Katja (Peer reviewed; Journal article, 2018-11)
      Fishing gears are designed to exploit the natural behaviors of fish, and the concern that fishing may cause evolution of behavioral traits has been receiving increasing attention. The first intuitive expectation is that ...

    • An evolutionary explanation of female-biased sexual size dimorphism in North Sea plaice, Pleuronectes platessa L. 

      Mollet, Fabian M.; Enberg, Katja Susanna; Boukal, David; Rijnsdorp, Adriaan D.; Dieckmann, Ulf (Journal article; Peer reviewed, 2023)
      Sexual size dimorphism (SSD) is caused by differences in selection pressures and life-history trade-offs faced by males and females. Proximate causes of SSD may involve sex-specific mortality, energy acquisition, and energy ...

    • Evolutionary expression differences of creatine synthesis-related genes: Implications for skeletal muscle metabolism in fish 

      Borchel, Andreas; Verleih, Marieke; Kühn, Carsten; Rebl, Alexander; Goldammer, Tom (Peer reviewed; Journal article, 2019)
      The creatine/phosphocreatine system is the principal energy buffer in mammals, but is scarcely documented in fish. We measured the gene expression of major enzymes of this system, glycine amidinotransferase (GATM), ...

    • The evolutionary history of the Central Asian steppe-desert taxon Nitraria (Nitrariaceae) as revealed by integration of fossil pollen morphology and molecular data 

      Woutersen, Amber; Jardine, Phillip E; Silvestro, Daniele; Bogotá-Angel, Raul Giovanni; Zhang, Hong-Xiang; Meijer, Niels; Bouchal, Johannes; Barbolini, Natasha; Dupont-Nivet, Guillaume; Koutsodendris, Andreas; Antonelli, Alexandre; Hoorn, Carina (Journal article; Peer reviewed, 2023)
      The transition from a greenhouse to an icehouse world at the Eocene-Oligocene Transition (EOT) coincided with a large decrease of pollen from the steppe-adapted genus Nitraria. This genus, now common along the Mediterranean ...