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Fletta eftir efnisorði "Bleikja"

Fletta eftir efnisorði "Bleikja"

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    The developmental transcriptome of contrasting Arctic charr (Salvelinus alpinus) morphs 
    Guðbrandsson, Jóhannes; Pashay Ahi, Ehsan; Franzdottir, Sigridur Rut; Kapralova, Kalina; Kristjansson, Bjarni K.; Steinhäuser, Sophie S.; Maier, Valerie H.; Johannesson, Isak M.; Snorrason, Sigurður S.; Jonsson, Zophonias O.; Palsson, Arnar (F1000 Research, Ltd., 2016-12-02)
    Species and populations with parallel evolution of specific traits can help illuminate how predictable adaptations and divergence are at the molecular and developmental level. Following the last glacial period, dwarfism and specialized bottom feeding ...
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    Diel activity and foraging mode of juvenile Arctic charr in fluctuating water flow 
    Larranaga, Nicolas; Valdimarsson, S.K.; Linnansaari, T.; Steingrímsson, Stefán Óli (Wiley, 2018-02-28)
    Streams fluctuate in water flow because of natural (e.g., rain) and human‐induced events (e.g., hydropeaking). Magnitude, frequency, and predictability of these events can have drastic consequences for fish populations. We studied how rapid modifications ...
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    Differential expression of the aryl hydrocarbon receptor pathway associates with craniofacial polymorphism in sympatric Arctic charr 
    Pashay Ahi, Ehsan; Steinhäuser, Sophie S.; Palsson, Arnar; Franzdottir, Sigridur Rut; Snorrason, Sigurður S.; Maier, Valerie H.; Jónsson, Zophonías Oddur (Springer Nature, 2015-09-16)
    Background The developmental basis of craniofacial morphology hinges on interactions of numerous signalling systems. Extensive craniofacial variation in the polymorphic Arctic charr, a member of the salmonid family, from Lake Thingvallavatn (Iceland), ...
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    Differential gene expression during early development in recently evolved and sympatric Arctic charr morphs 
    Guðbrandsson, Jóhannes; Franzdottir, Sigridur Rut; Kristjansson, Bjarni K.; Pashay Ahi, Ehsan; Maier, Valerie H.; Kapralova, Kalina; Snorrason, Sigurður S.; Jónsson, Zophonías Oddur; Palsson, Arnar (PeerJ, 2018-02-07)
    Phenotypic differences between closely related taxa or populations can arise through genetic variation or be environmentally induced, leading to altered transcription of genes during development. Comparative developmental studies of closely related ...
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    Experimental challenges with Renibacterium salmoninarum in Arctic charr Salvelinus alpinus 
    Guðmundsdóttir, Sigríður; Kristmundsson, Árni; Árnason, Ívar Örn (Inter-Research Science Center, 2017-03-30)
    Arctic charr Salvelinus alpinus L. is an important species in Icelandic aquaculture and the most common wild salmonid in Iceland. A study on the course of infection with the bacterium Renibacterium salmoninarum was conducted using 3 different challenge ...
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    Extensive genetic differentiation between recently evolved sympatric Arctic charr morphs 
    Guðbrandsson, Jóhannes; Kapralova, Kalina; Franzdottir, Sigridur Rut; Bergsveinsdóttir, Þóra Margrét; Hafstað, Völundur; Jónsson, Zophonías Oddur; Snorrason, Sigurður S.; Palsson, Arnar (Wiley, 2019-09-12)
    The availability of diverse ecological niches can promote adaptation of trophic specializations and related traits, as has been repeatedly observed in evolutionary radiations of freshwater fish. The role of genetics, environment, and history in ...
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    Gene expression in the phenotypically plastic Arctic charr (Salvelinus alpinus): A focus on growth and ossification at early stages of development 
    Beck, Samantha V.; Räsänen, Katja; Ahi, Ehsan P.; Kristjánsson, Bjarni K.; Skúlason, Skúli; Jónsson, Zophonías Oddur; Leblanc, Camille (Wiley, 2018-11-26)
    Gene expression during development shapes the phenotypes of individuals. Although embryonic gene expression can have lasting effects on developmental trajectories, few studies consider the role of maternal effects, such as egg size, on gene expression. ...
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    Life Cycle Assessment of Icelandic Arctic Char Fed Three Different Feed Types 
    Smárason, Birgir Örn; Ögmundarson, Ólafur; Arnason, Jon; Bjornsdottir, Rannveig; Davidsdottir, Brynhildur (Central Fisheries Research Institute, Trabzon, Turkey, 2017)
    This study utilized Life Cycle Assessment (LCA) to quantify the environmental impacts of 1 kg of live-weight Arctic char, cultivated in an Icelandic land-based aquaculture farm. The functional unit included assessments of three different feed types; ...
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    Seasonal variation in the invertebrate community and diet of a top fish predator in a thermally stable spring 
    Kreiling, Agnes-Katharina; O’Gorman, Eoin J.; Pálsson, Snæbjörn; Benhaïm, David; Leblanc, Camille A.; Ólafsson, Jón S.; Kristjánsson, Bjarni K. (Springer Science and Business Media LLC, 2020-09-18)
    Many life-history events in aquatic invertebrates are triggered by seasonal changes in water temperature, but other ecological factors may be important as well. To rule out the confounding effects of changing water temperature, we studied the seasonal ...
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    Transcriptional dynamics of a conserved gene expression network associated with craniofacial divergence in Arctic charr 
    Pashay Ahi, Ehsan; Kapralova, Kalina; Palsson, Arnar; Maier, Valerie; Guðbrandsson, Jóhannes; Snorrason, Sigurður S.; Jónsson, Zophonías Oddur; Franzdottir, Sigridur Rut (Springer Nature, 2014)
    Background Understanding the molecular basis of craniofacial variation can provide insights into key developmental mechanisms of adaptive changes and their role in trophic divergence and speciation. Arctic charr (Salvelinus alpinus) is a polymorphic ...