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Lars Ebbesson

Research Professor

+47 56 10 74 10
+46 730 598 600
Nygårdsgaten 112, 5008 Bergen, Norway

My research over the last 30 years has covered many basic and applied aspects of fish biology, integrating neuroscience, endocrinology, physiology, and behavior to address how the environment impacts salmon neural development, smoltification, stress, welfare, robustness, behavior, and appetite.

In 2006, I formed the Fish Neuroscience Network in Bergen. In 2009, I formed the Integrative Fish Biology Group and in 2016 the Centre for Sustainable Aquaculture Innovations (CSAI). In 2015, together with Nofima, we established the SFI-CtrlAQUA where I led the Dept of Fish Production and Welfare until the end of 2018 where my focus has turned towards the digitalization of fish biology to facilitate more sustainable aquaculture operational solutions.

In 2018, the H2020 innovation action project iFishIENCi was funded where I am the Science and Technology Manager. The project will develop innovations that will provide reliable real-time environmental and biological data online. We work together with SME´s, technology providers and fish farmers to develop real-time systems such as Fish-Talk-To-Me, intelligent Biology Online Steering System (iBOSS), and SMARTRAS.

A strategic focus and strength at NORCE is its ability to support the aquaculture industry in their digital transformation by providing competences from all departments, Environment, Technology, Climate, Health, Society and Energy. Further Digital Fish, the integration of biology and environment with technology to provide real-time understanding of fish physiology and behavior through sensors, cameras, and tracking systems will provide game-changing information on the biology of fish whether related to behavior and migration of wild fish or in aquaculture systems.

Lars Ebbesson


Climate & Environment

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Source: Andreas Graven, NORCE


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Water Flow Requirements of Post-smolt Atlantic Salmon (Salmo salar L.) Reared in Intensive Seawater Flow-through Systems: A Physiological Perspective † – Fishes 2023
Food anticipatory behaviour on European seabass in sea cages: activity-, positioning-, and density-based approaches – Frontiers in Marine Science 2023
Increased Thermal Challenges Differentially Modulate Neural Plasticity and Stress Responses in Post-Smolt Atlantic Salmon (Salmo salar) – Frontiers in Marine Science 2022
Exposure to cold temperatures differentially modulates neural plasticity and stress responses in post-smolt Atlantic salmon (Salmo salar) – Aquaculture 2022
Changes in circulating insulin-like growth factor-1 and its binding proteins in yearling rainbow trout during spring under natural and manipulated photoperiods and their relationships with gill Na+, K+-ATPase and body size – Comparative Biochemistry and Physiology A 2022
Neural activation in photosensitive brain regions of Atlantic salmon (Salmo salar) after light stimulation – PLOS ONE 2021
Performance and welfare of Atlantic salmon, Salmo salar L. post-smolts in recirculating aquaculture systems: Importance of salinity and water velocity – Journal of the World Aquaculture Society 2020
Effects of temperature and photoperiod on rainbow trout (Oncorhynchus mykiss) smoltification and haematopoiesis – Aquaculture 2019
Effects of different photoperiod regimes on the smoltification and seawater adaptation of seawater-farmed rainbow trout (Oncorhynchus mykiss): Insights from Na+, K+-ATPase activity and transcription of osmoregulation and growth regulation genes – Aquaculture 2019
Effects of environmental enrichment on forebrain neural plasticity and survival success of stocked Atlantic salmon – Journal of Experimental Biology 2019
Phylogenetic Reclassification of Vertebrate Melatonin Receptors To Include Mel1d – G3: Genes, Genomes, Genetics 2019
Proactive avoidance behaviour and pace-of-life syndrome in Atlantic salmon – Royal Society Open Science 2019
Transient photoreception in the hindbrain is permissive to the life history transition of hatching in Atlantic halibut – Developmental Biology 2018
Effects of high environmental CO2 levels on Atlantic salmon post-smolts – 2018
Comparison between Atlantic salmon Salmo salar post-smolts reared in open sea cages and in the Preline raceway semi-closed containment aquaculture system – Journal of Fish Biology 2018
Allostatic Load and Stress Physiology in European Seabass (Dicentrarchus labrax L.) and Gilthead Seabream (Sparus aurata L.) – Frontiers in Endocrinology 2018
Early life stress induces long-term changes in limbic areas of a teleost fish: The role of catecholamine systems in stress coping – Scientific Reports 2018
Rearing environment influences boldness and prey acquisition behavior, and brain and lens development of bull trout – Environmental Biology of Fishes 2017
How do individuals cope with stress? Behavioural, physiological and neuronal differences between proactive and reactive coping styles in fish – Journal of Experimental Biology 2017
Stocking density limits for post-smolt Atlantic salmon (Salmo salar L.) emphasis on production performance and welfare – Aquaculture 2017
Cognitive appraisal of aversive stimulus differs between individuals with contrasting stress coping styles; evidences from selected rainbow trout (Oncorhynchus mykiss) strains – Behaviour 2016
Impact of fish density and specific water flow on skin properties in Atlantic salmon (Salmo salar L.) post-smolts – Aquaculture 2016
Effects of two sublethal concentrations of mercury chloride on the morphology and metallothionein activity in the liver of zebrafish (Danio rerio) – International Journal of Molecular Sciences 2016
The ontogeny and brain distribution dynamics of the appetite regulators NPY, CART and pOX in larval Atlantic cod (Gadus morhua L.) – PLOS ONE 2016
A comparative study of the response to repeated chasing stress in Atlantic salmon (Salmo salar L.) parr and post-smolts – Comparative Biochemistry and Physiology A 2016
Functional divergence of type 2 deiodinase paralogs in the Atlantic salmon – Current Biology 2015
The effects of environmental enrichment and age-related differences on inhibitory avoidance in zebrafish (danio rerio hamilton) – Zebrafish 2015
Apolipoprotein E isoforms 3/3 and 3/4 differentially interact with circulating stearic, palmitic, and oleic fatty acids and lipid levels in Alaskan Natives – Nutrition Research 2015
Stress in Atlantic salmon: Response to unpredictable chronic stress – Journal of Experimental Biology 2015
Early steps in the European eel (Anguilla anguilla)-Vibrio vulnificus interaction in the gills: Role of the RtxA13 toxin – Fish and Shellfish Immunology 2015
Utvikling av osmoreguleringssystemet hos torskelarver startfôret på rotatorier eller naturlig zooplankton – Norsk Fiskeoppdrett 2015
Hvordan kan appetitt og fôrinntak stimuleres hos torskelarver? – Norsk Fiskeoppdrett 2015
Osmoregulation in Atlantic salmon Salmo salar smolts transferred to seawater at different temperatures – Journal of Fish Biology 2014
Krav til fisketetthet og vannforbruk – Norsk Fiskeoppdrett 2014
The exorhodopsin and melanopsin systems in the pineal complex and brain at early developmental stages of Atlantic halibut (Hippoglossus hippoglossus) – Journal of Comparative Neurology 2014
Unpredictable chronic stress decreases inhibitory avoidance learning in Tuebingen long-fin zebrafish: Stronger effects in the resting phase than in the active phase – Journal of Experimental Biology 2014
Dietary LC-PUFA deficiency early in ontogeny induces behavioural changes in pike perch (Sander lucioperca) larvae and fry – Aquaculture 2014
Pain and stress responses in farmed fish – Rev Sci Tech Off Int Epizoot 2014
Osmoregulation and growth in offspring of wild Atlantic salmon at different temperatures – Environmental Biology of Fishes 2014
Low light intensity can reduce Atlantic salmon smolt quality – Aquaculture 2013
Seawater tolerance and post-smolt migration of wild Atlantic salmon Salmo salar × brown trout S. trutta hybrid smolts – Journal of Fish Biology 2013
Environmental enrichment promotes neural plasticity and cognitive ability in fish – Proceedings of the Royal Society of London. Biological Sciences 2013
Environmental enrichment promotes neural plasticity and cognative behaviour in fish – Proceedings of the Royal Society of Edinburgh Section B 2013
Aluminum exposure impacts brain plasticity and behavior in Atlantic salmon (Salmo salar) – Journal of Experimental Biology 2013
Atlantic salmon (Salmo salar L.) smolts require more than two weeks to recover from acidic water and aluminium exposure – Aquatic Toxicology 2013
Growth, osmoregulation and endocrine changes in wild Atlantic salmon smolts and post-smolts during marine migration – Aquaculture 2012
Heart rate is associated with markers of fatty acid desaturation: the GOCADAN study – International Journal of Circumpolar Health 2012
Isolation and characterization of melanopsin photoreceptors of atlantic salmon (Salmo salar) – Journal of Comparative Neurology 2012
Recovery of Atlantic salmon smolts following aluminum exposure defined by changes in blood physiology and seawater tolerance – Aquaculture 2012
Salmon lice-induced mortality of Atlantic salmon postsmolts experiencing episodic acidification and recovery in freshwater – Aquaculture 2012
Environmental effects on fish neural plasticity and cognition – Journal of Fish Biology 2012
Corticotropin-Releasing Factor Neurogenesis during Midlife Development in Salmon: Genetic, Environmental and Thyroid Hormone Regulation – Journal of neuroendocrinology 2011
Forsuringsskader og helbredningsstid for laksesmolt – ? 2010
Individual saturated fatty acids are associated with different components of insulin resistance and glucose metabolism: the GOCADAN study – International Journal of Circumpolar Health 2010
Effects of acidic water and aluminum exposure on gill Na+, K+-ATPase alpha-subunit isoforms, enzyme activity, physiology and return rates in Atlantic salmon (Salmo salar L.) – Aquatic Toxicology 2010
Heart rate is associated with red blood cell fatty acid concentration: The Genetics of Coronary Artery Disease in Alaska Natives (GOCADAN) study – American Heart Journal 2010
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