Browsing Brage NMBU by Author "Johansen, Ida Beitnes"
Now showing items 1-20 of 21
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A novel role for pigment genes in the stress response in rainbow trout (Oncorhynchus mykiss)
Kahn, Uniza Wahid; Øverli, Øyvind; Hinkle, Patricia M.; Pasha, Farhan Ahmad; Johansen, Ida Beitnes; Berget, Ingunn; Silva, Patricia; Kittilsen, Silje; Höglund, Erik; Omholt, Stig William; Våge, Dag Inge (Journal article; Peer reviewed, 2016) -
Acute and genomic effects of Thyroid Hormones on the Atlantic salmon (Salmo salar) heart
Spanos, Georgios (Master thesis, 2022)Farmed salmon suffer from a variety of heart pathologies that impair cardiac function and ultimately contribute to cardiac failure and mortality. Thyroid hormones (TH) have well-studied cardioprotective effects in mammals, ... -
Behavioural effects of the common brain-infecting parasite Pseudoloma neurophilia in laboratory zebrafish (Danio rerio)
Midttun, Helene Louise Eghave; Vindas, Marco; Nadler, Lauren Elizabeth; Øverli, Øyvind; Johansen, Ida Beitnes (Peer reviewed; Journal article, 2020)Research conducted on model organisms may be biased due to undetected pathogen infections. Recently, screening studies discovered high prevalence of the microsporidium Pseudoloma neurophilia in zebrafish (Danio rerio) ... -
Bigger is not better: cortisol-induced cardiac growth and dysfunction in salmonids
Johansen, Ida Beitnes; Sandblom, Erik; Skov, Peter V.; Gräns, Albin; Ekström, Andreas; Lunde, Ida Gjervold; Vindas, Marco Antonio; Zhang, Lili; Höglund, Erik; Frisk, Michael; Sjaastad, Ivar; Nilsson, Göran Erik; Øverli, Øyvind (Journal article; Peer reviewed, 2017) -
Brain serotonergic activation in growth-stunted farmed salmon: Adaption versus pathology
Vindas, Marco Antonio; Johansen, Ida Beitnes; Folkedal, Ole; Höglund, Erik; Gorissen, Marnix; Flik, Gert; Kristiansen, Tore S; Øverli, Øyvind (Journal article; Peer reviewed, 2016) -
Brain-encysting trematodes (Euhaplorchis californiensis) decrease raphe serotonergic activity in California killifish (Fundulus parvipinnis)
Helland-Riise, Siri Helene; Vindas, Marco; Johansen, Ida Beitnes; Nadler, Lauren Elizabeth; Weinersmith, Kelly L.; Hechinger, Ryan F.; Øverli, Øyvind (Peer reviewed; Journal article, 2020)Modulation of brain serotonin (5-HT) signalling is associated with parasite-induced changes in host behaviour, potentially increasing parasite transmission to predatory final hosts. Such alterations could have substantial ... -
Brain-infecting parasites leave lasting effects on behaviour even in resistant hosts
Vindas, Marco; Midttun, Helene Louise Eghave; Nadler, Lauren Elizabeth; Fontaine, Romain; Weltzien, Finn-Arne; Øverli, Øyvind; Johansen, Ida Beitnes (Peer reviewed; Journal article, 2022) -
A brain‐infecting parasite impacts host metabolism both during exposure and after infection is established
Nadler, Lauren Elizabeth; Bengtson, Erik; Eliason, Erika J.; Helland-Riise, Siri Helene; Johansen, Ida Beitnes; Turner, Andrew; Øverli, Øyvind; Hechinger, Ryan F. (Peer reviewed; Journal article, 2020)1. Metabolic costs associated with parasites should not be limited to established infections. Even during initial exposure to questing and attacking parasites, hosts can enact behavioural and physiological responses that ... -
Contrasting associations between breeding coloration and parasitism of male Arctic charr relate to parasite species and life cycle stage
Johansen, Ida Beitnes; Henriksen, Eirik Haugstvedt; Shaw, Jenny Carolyn; Mayer, Ian; Amundsen, Per-Arne; Øverli, Øyvind (Journal article; Peer reviewed, 2019)Conspicuous carotenoid ornamentation is considered a signal of individual “quality” and one of the most intensely studied traits found to co-vary with parasitism. Since it has been suggested that only “high quality” ... -
Coping with unpredictability: Dopaminergic and neurotrophic responses to omission of expected reward in Atlantic salmon (Salmo salar L.)
Vindas Alvarado, Marco Antonio; Sørensen, Christina; Johansen, Ida Beitnes; Folkedal, Ole; Höglund, Erik; Kahn, Uniza Wahid; Stien, Lars Helge; Kristiansen, Tore S; Braastad, Bjarne Olai; Øverli, Øyvind (Journal article; Peer reviewed, 2014) -
Echocardiography - a non-invasive alternative for assessing cardiac morphology and function in Atlantic salmon (Salmo salar L.)
Becker, Victoria; Kavaliauskiene, Simona; Sandblom, Erik; Zena, Lucas A.; Gräns, Albin; Louch, William Edward; Sjaastad, Ivar; Johansen, Ida Beitnes; Frisk, Michael (Peer reviewed; Journal article, 2024) -
Effects of Pseudoloma neurophilia infection on the brain transcriptome in zebrafish (Danio rerio)
Midttun, Helene Louise Eghave; Vindas, Marco; Whatmore, Paul J; Øverli, Øyvind; Johansen, Ida Beitnes (Peer reviewed; Journal article, 2020)Laboratory zebrafish are commonly infected with the intracellular, brain‐infecting microsporidian parasite Pseudoloma neurophilia . Chronic P. neurophilia infections induce inflammation in meninges, brain and spinal cord, ... -
Effects of the brain-infecting parasite Pseudoloma neurophilia in laboratory zebrafish (Danio rerio)
Midttun, Helene Louise Eghave (PhD thesis;2020:40, Doctoral thesis, 2020)Zebrafish (Danio rerio) are increasingly popular model animals in scientific fields ranging from behavioural ecology to neurobiology. It is therefore of increasing concern that half of all zebrafish research facilities are ... -
Intensive smolt production is associated with deviating cardiac morphology in atlantic salmon
Frisk, Michael; Høyland, Maren; Zhang, Lili; Vindas, Marco; Øverli, Øyvind; Johansen, Ida Beitnes (Peer reviewed; Journal article, 2020)High pre-slaughter mortality rates of Atlantic salmon (Salmo salar L.) are a reoccurring welfare issue and economic burden in aquaculture. Sudden death immediately prior to slaughter is particularly problematic given the ... -
Kindness to the final host and vice versa: A trend for parasites providing easy prey?
Øverli, Øyvind; Johansen, Ida Beitnes (Journal article; Peer reviewed, 2019)Traditionally the “extended phenotype” concept refers to parasites that manipulate host phenotype to increase parasite fitness. This includes parasites that render intermediate hosts more susceptible to predation by final ... -
Persistent immune responses in the heart determine the outcome of cardiomyopathy syndrome in Atlantic salmon (Salmo salar)
Sun, Baojian; Vindas, Marco; Kavaliauskiene, Simona; Bjørgen, Håvard; Koppang, Erling Olaf; Wisløff, Helene; Frisk, Michael; Lund, Hege; Johansen, Ida Beitnes (Peer reviewed; Journal article, 2024) -
Prevalence and severity of cardiac abnormalities and arteriosclerosis in farmed rainbow trout (Oncorhynchus mykiss)
Brijs, Jeroen; Hjelmstedt, Per; Berg, C.; Johansen, Ida Beitnes; Sundh, Henrik; Roques, Jonathan AC; Ekström, Andreas; Sandblom, Erik; Sundell, Kristina; Olsson, Catharina; Axelsson, Michael; Gräns, Albin (Peer reviewed; Journal article, 2020) -
Regional Distribution of a Brain-Encysting Parasite Provides Insight on Parasite-Induced Host Behavioral Manipulation
Helland-Riise, Siri Helene; Nadler, Lauren Elizabeth; Vindas, Marco; Bengston, Erik; Turner, Andrew; Johansen, Ida Beitnes; Weinersmith, Kelly L.; Hechinger, Ryan F.; Øverli, Øyvind (Peer reviewed; Journal article, 2020) -
Short-term cortisol exposure alters cardiac hypertrophic and non-hypertrophic signalling in a time-dependent manner in rainbow trout
Nørstrud, Karoline S.; Vindas, Marco; Nilsson, Göran Erik; Johansen, Ida Beitnes (Journal article; Peer reviewed, 2018)Cardiac disease is a growing concern in farmed animals, and stress has been implicated as a factor for myocardial dysfunction and mortality in commercial fish rearing. We recently showed that the stress hormone cortisol ... -
State of the heart: Anatomical annotation and assessment of morphological cardiac variation in Atlantic salmon (Salmo salar L.)
Engdal, Vilde Arntzen; Dalum, Alf Seljenes; Kryvi, Harald; Frisk, Michael; Torsvik, Håkon; Hodne, Kjetil; Romstad, Harriet; Johansen, Ida Beitnes (Peer reviewed; Journal article, 2024)