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Frode Oppedal

Phone: 971 66 781
Visiting address: Havforskningsinstituttet Matre 5984 Matredal

Works with

Animal welfare, fish welfare, salmon behaviour, cage environment, sexual maturation, growth, farm management, feeding,

Curriculum Vitae

Doctor scientiarum at University of Bergen, 28 March 2003: Influences of artificial light on Atlantic salmon (Salmo salar L.) in seawater.

Scientist at Institute of Marine Research, Matre within research group Animal Welfare from 1995 to date.

My main focus has been studies on salmon behaviour and performance in commercial sea cages during fluctuating natural and artificial environments. As an authority in this field, a compilation is recently published as a review in the journal Aquaculture.


Oppedal, F., Dempster, T., Stien, L., 2011. Environmental drivers of Atlantic salmon behaviour in sea-cages: a review. Aquaculture 311, 1-18. DOI:10.1016/j.aquaculture.2010.11.020

Folkedal., O., Torgersen, T., Nilsson, J., Oppedal, F., 2010. Habituation rate and capacity of Atlantic salmon (Salmo salar) parr to sudden transitions from darkness to light. Aquaculture 307, 170-172. http://dx.doi.org/10.1016/j.aquaculture.2010.06.001

Bratland, S., Stien. L.H., Braithwaite, V., Juell, J-E., Folkedal, O., Nilsson, J., Oppedal, F., Kristiansen, T.S. 2010. From fright to anticipation: Using aversive light stimuli to investigate reward conditioning in large groups of Atlantic salmon (Salmo salar L.). Aquaculture International 18, 991-1001. DOI 10.1007/s10499-009-9317-8.

Korsøen Ø., Dempster, T., Fjelldal P.G., Oppedal F., Kristiansen, T., 2009. Long-term culture of Atlantic salmon (Salmo salar L.) in submerged cages during winter affects behaviour, growth and condition. Aquaculture 296, 373-381.

Johansson, D., Ruohonen, K., Juell, J-E. and Oppedal, F., 2009. Swimming depth and thermal history of individual Atlantic salmon (Salmo salar L.) in production cages under different ambient temperature conditions. Aquaculture 290, 296-303.

Dempster, T., Korsøen, Ø., Folkedal, O., Juell, J-E. and Oppedal, F., 2009. Submergence of Atlantic salmon (Salmo salar L.) in commercial scale sea-cages: a potential short-term solution to poor surface conditions. Aquaculture 288, 254-263.

Rungruangsak-Torrissen, K., Sunde, J., Berg A.E., Nordgarden, U., Fjelldal P.G., and Oppedal, F., 2009. Digestive efficiency, free amino acid pools and quality of growth performance in Atlantic salmon (Salmo salar L.) affected by light regimes and vaccine types. Fish Physiology and Biochemistry 35, 255-272.

Stien, L.H., Bratland, S., Austevoll, I., Oppedal, F. and Kristiansen, T.S., 2007. A video analysis procedure for assessing vertical fish distribution in aquaculture tanks. Aquacultural Engineering 37, 115-124.

Oppedal, F., Juell, J.-E. and Johansson, D., 2007. Thermo- and photoregulatory swimming behaviour of caged Atlantic salmon: Implications for photoperiod management and fish welfare. Aquaculture 265, 70-81.

Johansson, D., Juell, J.-E., Oppedal, F., Stiansen J.E. and Ruohonen, K., 2007. The influence of the pycnocline and cage resistance on current flow, oxygen flux and swimming behaviour of Atlantic salmon (Salmo salar L.) in production cages. Aquaculture 265, 271-287.

Johansson, D., Ruohonen., K., Kiessling, D., Oppedal, F., Stiansen, J.E., Kelly, M., and Juell, J-.E., 2006. Effect of environmental factors on swimming depth preferences of Atlantic salmon (Salmo salar L.) and temporal and spatial variations in oxygen levels in sea cages at a fjord site. Aquaculture 254, 594-605.

Oppedal, F., Berg, A., Olsen, R.E., Taranger, G.L., and Hansen, T., 2006. Photoperiod in seawater influence seasonal growth and chemical composition in autumn sea-transferred Atlantic salmon (Salmo salar L.) given two vaccines. Aquaculture 254, 396-410.

Knudsen, F.R., Fosseidengen, J.E., Oppedal, F., Karlsen, Ø and Ona, E., 2004. Hydroacustic monitoring of fish in sea cages; target strength (TS) measurements on Atlantic salmon (Salmo salar). Fisheries Research 69, 205-209.

Nordgarden, U., Oppedal, F., Taranger G.L., Hemre, G.-I. and Hansen, T., 2003. Seasonally changing metabolism in Atlantic salmon (Salmo salar L.) I – Growth and feed conversion ratio. Aquaculture Nutrition 9, 287-293.

Juell, J.-E., Oppedal, F., Boxaspen, K. and Taranger G.L., 2003. Submerged light increases swimming depth and reduces fish density of Atlantic salmon Salmo salar L. in production cages. Aquaculture Research 34, 469-477.

Hevrøy, E.M., Boxaspen, K., Oppedal, F., Taranger G.L. and Holm, J.C., 2003. The effect of artificial light treatment and depth on the infestation of the sea louse Lepeophtheirus salmonis on Atlantic salmon (Salmo salar L.) culture. Aquaculture 220, 1-14.

Oppedal, F., Taranger, G.L, and Hansen, T. 2003. Growth performance and sexual maturation in diploid and triploid Atlantic salmon (Salmo salar L.) in seawater tanks exposed to continuous light or simulated natural photoperiod. Aquaculture 215, 145-162.

Oppedal, F., Juell, J.E, Taranger, G.L. and Hansen, T., 2001. Artificial light and season affect vertical distribution and swimming behaviour of post-smolt Atlantic salmon in sea cages. Journal of Fish Biology 58, 1570-1584.

Oppedal, F., Taranger, G.L., Juell, J.E. and Hansen, T., 1999. Growth, osmoregulation and sexual maturation of underyearling Atlantic salmon smolt (Salmo salar L.) exposed to different intensities of continuous light in sea cages. Aquaculture Research 30, 491-499.

Oppedal, F., Taranger, G.L., Juell, J.E, Fosseidengen, J.E. and Hansen, T., 1997. Light intensity affects growth and sexual maturation of Atlantic salmon (Salmo salar) postsmolts in sea cages. Aquatic Living Resources 10, 351-357.

Research group