Blar i Brage NMBU på forfatter "Øverli, Øyvind"
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Depression-like state behavioural outputs may confer beneficial outcomes in risky environments
Vindas, Marco; Helland-Riise, Siri Helene; Nilsson, Göran Erik; Øverli, Øyvind (Journal article; Peer reviewed, 2019) -
Dietary l-tryptophan leaves a lasting impression on the brain and the stress response
Höglund, Erik; Øverli, Øyvind; Andersson, Madelene Åberg; Silva, Patricia; Laursen, Danielle Caroline; Moltesen, Maria M; Krogdahl, Åshild; Schjolden, Joachim; Winberg, Svante; Vindas, Marco Antonio; Mayer, Ian; Hillestad, Marie (Journal article; Peer reviewed, 2017) -
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 repeated short episodes of environmental acidification on Atlantic salmon (Salmo salar) from a landlocked population
Höglund, Erik; Høgberget, Rolf; Åtland, Åse; Haraldstad, Tormod; Øverli, Øyvind; Vindas, Marco A (Peer reviewed; Journal article, 2021)Chronic or repeated exposure to environmental contaminants may result in allostatic overload, a physiological situation in which the costs of coping affect long-term survival and reproductive output. Continuous measurements ... -
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 ... -
Future directions for personality research: Contributing new insights to the understanding of animal behavior
Wilson, Vanessa; Guenther, Anja; Øverli, Øyvind; Seltmann, Martin W; Altschul, Drew (Journal article; Peer reviewed, 2019)As part of the European Conference on Behavioral Biology 2018, we organized a symposium entitled, “Animal personality: providing new insights into behavior?” The aims of this symposium were to address current research in ... -
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 ... -
Melanin-based skin pigmentation and stress in Atlantic salmon (Salmo salar)
Thorsen, David Krokedal (Master thesis, 2019-05-12)Anybody who has studied, fished for, handled, or consumed Atlantic salmon (Salmo salar) and rainbow trout (Oncorhynchus mykiss) will have noticed that the skin of these fishes is typically dappled with black spots. In ... -
Microbiomes, plausible players or not in alteration of host behavior
Biron, David G.; Bonhomme, Ludovic; Coulon, Marianne; Øverli, Øyvind (Journal article; Peer reviewed, 2015) -
Neuroendocrine indicators of allostatic load reveal the impact of environmental acidification in fish
Höglund, Erik; Korzan, Wayne; Åtland, Åse; Haraldstad, Tormod; Høgberget, Rolf; Mayer, Ian; Øverli, Øyvind (Peer reviewed; Journal article, 2020)When mobilized from surrounding soils and binding to gills at moderately low pH, aluminum (Al) cations can adversely affect fish populations. Furthermore, acidification may lead to allostatic overload, a situation in which ... -
Parasite induced changes in neuronal activity : is the parasitic eye-fluke (Diplostomum spp.) manipulating its Arctic charr (Salvelinus alpinus) host?
Gunnes, Mikkel (Master thesis, 2022)Many parasites possess complex lifecycles and depend on several host species to complete their lifecycle. Some parasites even manipulate their hosts phenotype in a way that facilitates trophic transmission to their final ... -
Proactive avoidance behaviour and pace-of-life syndrome in Atlantic salmon
Damsgård, Børge; Evensen, Tor Hatten; Øverli, Øyvind; Gorissen, Marnix; Ebbesson, Lars O.E.; Rey, Sonia; Höglund, Erik (Journal article; Peer reviewed, 2019) -
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) -
Stress responsiveness in salmonids : effects on genes, organs, and organisms
Johansen, Ida Beitnes (PhD Thesis;2011:06, Doctoral thesis, 2011)Stress is an inescapable burden for fish like for all other animals. For individuals that frequently encounter stressful situations, repeated or prolonged physiological stress responses, can potentially compromise the ... -
The neural basis of threat-sensitive behaviour in fish
Silva, Patricia Isabel Mota (PhD Thesis;2015:6, Doctoral thesis, 2020-11-10)Fear, or threat-sensitive behaviour, is an emotionally guided response allowing animals to minimize exposure to potential danger. Stress is a set of physiological/behavioural responses to such exposure. Among other ... -
Tryptophan metabolic pathways and brain serotonergic activity: A comparative review
Höglund, Erik; Øverli, Øyvind; Winberg, Svante (Journal article; Peer reviewed, 2019) -
The use of light, restrictive feeding, fibrous feed and stocking density and the consequences for animal welfare for poultry species kept in Norway - Scientific Opinion of the Panel on Animal Health and Welfare of the Norwegian Scientific Committee for Food and Environment
Bøe, Knut Egil; Grahek-Ogden, Danica; Hoel, Kristian; Gjøen, Tor; Godfroid, Jacques Xavier Leon; Janczak, Andrew Michael; Madslien, Knut; Olsen, Rolf-Erik; Rimstad, Espen; Øverli, Øyvind; Agdestein, Angelika (VKM Report;2022:24, Journal article; Peer reviewed, 2022) -
Variation at early life stages of Atlantic salmon : relationships between emergence time and stress coping styles
Serrano, Jonathan David Vaz (PhD Thesis;2011:08, Doctoral thesis, 2011)Captive fish are exposed to a variety of stressful situations, which can affect growth rates and promote diseases. Identification and selection for stress resistant fish at early stages of the production cycle could be ... -
Welfare effects of environmental hypercapnia quantified by indicators based on morphology and allostatic load in Atlantic salmon (Salmo salar)
Höglund, Erik; Folkedal, Ole; Aerts, Johan; Hvas, Malthe; Øverli, Øyvind; Mangor-Jensen, Anders; Vindas, Marco A.; Nilsson, Jonatan; Kristiansen, Tore (Peer reviewed; Journal article, 2023)Water supply is a limited resource in most salmon hatcheries, which is compensated by reduced water flow and oxygenation. However, reduced water exchange can lead to accumulation of CO2, resulting in environmental hypercapnia, ...