Browsing AURA by Author "Höglund, Erik"
Now showing items 1-18 of 18
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Assessing Stress Resilience After Smolt Transportation by Waterborne Cortisol and Feeding Behavior in a Commercial Atlantic Salmon (Salmo salar) Grow-Out Recirculating Aquaculture System
Höglund, Erik; Fernandes, Paulo; Rojas-Tirado, Paula Andrea; Rundberget, Thomas; Hess-Erga, Ole-Kristian (Peer reviewed; Journal article, 2022)Sampling protocols and water quality sensors have been developed to assess fish health and welfare in recirculating aquaculture systems (RASs). Still, the use of fish-based non-invasive welfare indicators, reflecting the ... -
Behavioral reactions to H2S in farmed Salmon
Markhus, Lars Martin (Master thesis, 2023)I resirkulerende akvakulturanlegg kan dannelse av hydrogensulfid (H2S) føre til akutt massedød av laks. Det er begrenset med kunnskap om hvordan fisk reagerer på H2S ved lave konsentrasjoner. Automatisk tolking av adferd ... -
Contrasting coping styles meet the wall: A dopamine driven dichotomy in behavior and cognition
Höglund, Erik; Silva, Patricia IM; Vindas, Marco Antonio; Øverli, Øyvind (Journal article; Peer reviewed, 2017) -
Contrasting neurochemical and behavioral profiles reflects stress coping styles but not stress responsiveness in farmed gilthead seabream (Sparus aurata)
Höglund, Erik; Moltesen, Maria; Castanheira, Maria Filipa; Thörnqvist, Per-Ove; Silva, Patricia IM; Øverli, Øyvind; Martins, Catarina; Winberg, Svante (Peer reviewed; Journal article, 2020)In fish, as well as in other vertebrates, contrasting suites of physiological and behavioral traits, or coping styles, are often shown in response to stressors. However, the magnitude of the response (i.e. stress responsiveness) ... -
Coping styles in farmed fish: consequences for aquaculture
Castanheira, Maria Filipa; Conceição, Luis E.C.; Millot, Sandie; Rey, Sonia; Bégout, Marie-Laure; Damsgård, Børge; Kristiansen, Tore S; Höglund, Erik; Øverli, Øyvind; Martins, Catarina I.M. (Journal article; Peer reviewed, 2017)Individual differences in physiological and behavioural responses to stressors are increasingly recognised as adaptive variation and thus raw material for evolution and fish farming improvements including selective breeding. ... -
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) -
Digital Data Help Explain Drivers of Angler Satisfaction : An Example from Southern Norway
Johansen, Kurt; Olsen, Esben Moland; Haraldstad, Tormod; Arlinghaus, Robert; Höglund, Erik (Peer reviewed; Journal article, 2022)We analyzed trip-level self-reports collected by a cell phone app to understand angler satisfaction of fishing for sea trout Salmo trutta (anadromous Brown Trout) in southern Norway. We found no clear support for a positive ... -
Digital Data Help Explain Drivers of Angler Satisfaction: An Example from Southern Norway
Johansen, Kurt; Olsen, Esben Moland; Haraldstad, Tormod; Arlinghaus, Robert; Höglund, Erik (Peer reviewed; Journal article, 2022)We analyzed trip-level self-reports collected by a cell phone app to understand angler satisfaction of fishing for sea trout Salmo trutta (anadromous Brown Trout) in southern Norway. We found no clear support for a positive ... -
Does sedation with AQUI-S® mitigate transport stress and post transport mortality in ballan wrasse (Labrus bergyltae)?
Calabrese, Sara; Jonassen, Thor Magne; Steigum, Endre; Åsnes, Helga Øen; Imsland, Albert; Saude, Carolina Serra; Wergeland, Truls; Höglund, Erik (Peer reviewed; Journal article, 2024)Ballan wrasse (Labrus bergylta) are commonly used as cleaner fish in salmon farms as a biological treatment to mitigate sea lice infestation. Improved welfare for cleaner fish both during production of these fish and when ... -
Effects of emergence time and early social rearing environment on behaviour of Atlantic salmon: Consequences for juvenile fitness and smolt migration
Larsen, Martin H.; Johnsson, Jörgen I.; Winberg, Svante; Wilson, Alexander D.M.; Hammenstig, David; Thörnqvist, Per-Ove; Midwood, Jonathan D.; Aarestrup, Kim; Höglund, Erik (Journal article; Peer reviewed, 2015)Consistent individual differences in behaviour have been well documented in a variety of animal taxa, but surprisingly little is known about the fitness and life-history consequences of such individual variation. In wild ... -
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 ... -
Migratory passage structures at hydropower plants as potential physiological and behavioural selective agents
Haraldstad, Tormod; Haugen, Thrond Oddvar; Kroglund, Frode; Olsen, Esben Moland; Höglund, Erik (Peer reviewed; Journal article, 2019) -
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, 2019)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 ... -
No additional stress of sublethal gas supersaturation in a landlocked population of Atlantic salmon (Salmo salar) exposed to environmental acidification
Höglund, Erik; Loland, Lifen Zhou; Høgberget, Rolf; Skov, Peter Vilhelm; Velle, Gaute (Peer reviewed; Journal article, 2024)The landlocked Atlantic salmon population “bleke” faces extinction due to environmental acidification (EA) and hydropower expansion in the Norwegian river Otra. Despite of restoration, unexpected mortality has been reported ... -
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) -
The social-ecological value of recreational fishing for sea trout; a potential for further development of the experience industry in Aust-Agder? (TROUT XP)
Johansen, Kurt; Moland, Esben; Höglund, Erik (NIVA-rapport, Research report, 2019)Prosjektet undersøkte hvilken betydning det å få sjøørret har for fritidsfiskere i form av fiskeglede og videre hva som er viktig for en god fiskeopplevelse. Bakgrunnen for dette er å få i stand et europeisk samarbeid og ... -
Tryptophan metabolic pathways and brain serotonergic activity: A comparative review
Höglund, Erik; Øverli, Øyvind; Winberg, Svante (Peer reviewed; Journal article, 2019) -
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, ...