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Geir Lasse Taranger

Telefon: 901 11 596
Besøksadresse: Nordnesgaten 50, Bergen

Arbeider med

Kjønnsmodning i laks og torsk, fiskevelferd, miljøfaktorer, oppdrettsmiljø, steril fisk

Curriculum Vitae

Summary: More than 25 years experience in aquaculture research, fish reproductive physiology, fish welfare, environmental control of reproduction, smoltification and somatic growth in fish. Qualified as professor in Aquaculture at the University of Bergen and as Principal Scientist (1183 scientist) at IMR in 2001.

Main research interest: aquaculture, regulation of puberty and spawning in fish, sterile fish, fish welfare, marine genomics, aquaculture risk assessments.

Scientific papers

ISI statistics October 9 2013: 67 scientific papers, H-index; 25, citations; 1821.

Andersson, E., Schulz, R.W., Male, R., Bogerd, J., Patina, D., Benedet, S., Norberg, B., and Taranger, G.L. (2013). Pituitary gonadotropin and ovarian gonadotropin receptor transcript levels: Seasonal and photoperiod-induced changes in the reproductive physiology of female Atlantic salmon (Salmo salar). General and Comparative Endocrinology 191, 247-258.
Hildahl, J., Taranger, G.L., Norberg, B., Haug, T.M., and Weltzien, F.-A. (2013). Differential regulation of GnRH ligand and receptor genes in the brain and pituitary of Atlantic cod exposed to different photoperiod. General and Comparative Endocrinology 180, 7-14.
Skulstad, O.F., Karlsen, O., Fosseidengen, J.E., Kristiansen, T.S., Taranger, G.L., and Oppedal, F. (2013). Vertical distribution and sexual maturation in cage-farming of Atlantic cod (Gadus morhua L.) exposed to natural or continuous light. Aquaculture Research 44, 903-917.
Kleppe, L. Karlsen, Ø. Edvardsen, R.B., Norberg, B., Andersson, E., Furmanek, T.  Taranger G.L. and Wargelius, A.. (2013). Cortisol treatment of prespawning female cod affects cytogenesis related factors in eggs and embryos. General and Comparative Endocrinology. 189, 84–95.
Opstad, I., Fjelldal, P.G., Karlsen, O., Thorsen, A., Hansen, T.J., and Taranger, G.L. (2013). The effect of triploidization of Atlantic cod (Gadus morhua L.) on survival, growth and deformities during early life stages. Aquaculture 388, 54-59.
Kvamme, B.O., Gadan, K., Finne-Fridell, F., Niklasson, L., Sundh, H., Sundell, K., Taranger, G.L., and Evensen, O. (2013). Modulation of innate immune responses in Atlantic salmon by chronic hypoxia-induced stress. Fish & Shellfish Immunology 34, 55-65.
Hildahl, J., Taranger, G.L., Norberg, B., Haug, T.M., and Weltzien, F.A. (2013). Differential regulation of GnRH ligand and receptor genes in the brain and pituitary of Atlantic cod exposed to different photoperiod. General and Comparative Endocrinology 180, 7-14.
Kleppe, L., Edvardsen, R.B., Kuhl, H., Malde, K., Furmanek, T., Drivenes, O., Reinhardt, R., Taranger, G.L., and Wargelius, A. (2012). Maternal 3 ' UTRs: from egg to onset of zygotic transcription in Atlantic cod. Bmc Genomics 13,
Haugen, T., Almeida, F.F.L., Andersson, E., Bogerd, J., Male, R., Skaar, K.S., Schulz, R.W., Sorhus, E., Wijgerde, T., and Taranger, G.L. (2012). Sex differentiation in Atlantic cod (Gadus morhua L.): morphological and gene expression studies. Reproductive Biology and Endocrinology 10,
Drivenes, O., Taranger, G.L., and Edvardsen, R.B. (2012). Gene Expression Profiling of Atlantic Cod (Gadus morhua) Embryogenesis Using Microarray. Marine Biotechnology 14, 167-176.
Chen, S.X., Almeida, F.F.L., Andersson, E., Taranger, G.L., Schmidt, R., Schulz, R.W., and Bogerd, J. (2012). Cloning, pharmacological characterization and expression analysis of Atlantic cod (Gadus morhua, L.) nuclear progesterone receptor. General and Comparative Endocrinology 179, 71-77.
Niklasson, L., Sundh, H., Fridell, F., Taranger, G.L., and Sundell, K. (2011). Disturbance of the intestinal mucosal immune system of farmed Atlantic salmon (Salmo salar), in response to long-term hypoxic conditions. Fish & Shellfish Immunology 31, 1072-1080.
Meier, S., Morton, H.C., Andersson, E., Geffen, A.J., Taranger, G.L., Larsen, M., Petersen, M., Djurhuus, R., Klungsoyr, J., and Svardal, A. (2011). Low-dose exposure to alkylphenols adversely affects the sexual development of Atlantic cod (Gadus morhua): Acceleration of the onset of puberty and delayed seasonal gonad development in mature female cod. Aquatic Toxicology 105, 136-150.
Haugen, T., Andersson, E., Norberg, B., and Taranger, G.L. (2011). The production of hermaphrodites of Atlantic cod (Gadus morhua) by masculinization with orally administered 17-alpha-methyltestosterone, and subsequent production of all-female cod populations. Aquaculture 311, 248-254.
Edvardsen, R.B., Malde, K., Mittelholzer, C., Taranger, G.L., and Nilsen, F. (2011). EST resources and establishment and validation of a 16 k cDNA microarray from Atlantic cod (Gadus morhua). Comparative Biochemistry and Physiology D-Genomics & Proteomics 6, 23-30.
de Almeida, F.F.L., Andersson, E., Mittelholzer, C., Karlsen, O., Taranger, G.L., and Schulz, R.W. (2011). Pituitary gonadotropin and testicular gonadotropin receptor expression in Atlantic cod (Gadus morhua L.) during the first reproductive season: Effects of photoperiod modulation. General and Comparative Endocrinology 173, 111-119.
Chen, S.X., Bogerd, J., Andersson, E., Almeida, F.F.L., Taranger, G.L., and Schulz, R.W. (2011). Cloning, pharmacological characterization, and expression analysis of Atlantic salmon (Salmo salar L.) nuclear progesterone receptor. Reproduction 141, 491-500.
Taranger, G.L., Carrillo, M., Schulz, R.W., Fontaine, P., Zanuy, S., Felip, A., Weltzien, F.A., Dufour, S., Karlsen, O., Norberg, B., et al. (2010). Control of puberty in farmed fish. General and Comparative Endocrinology 165, 483-515.
Muncaster, S., Andersson, E., Kjesbu, O.S., Taranger, G.L., Skiftesvik, A.B., and Norberg, B. (2010). The reproductive cycle of female Ballan wrasse Labrus bergylta in high latitude, temperate waters. Journal of Fish Biology 77, 494-511.
Garcia-Lopez, A., de Jonge, H., Nobrega, R.H., de Waal, P.P., van Dijk, W., Hemrika, W., Taranger, G.L., Bogerd, J., and Schulz, R.W. (2010). Studies in Zebrafish Reveal Unusual Cellular Expression Patterns of Gonadotropin Receptor Messenger Ribonucleic Acids in the Testis and Unexpected Functional Differentiation of the Gonadotropins. Endocrinology 151, 2349-2360.
Fjelldal, P.G., Nordgarden, U., Wargelius, A., Taranger, G.L., Waagbo, R., and Olsen, R.E. (2010). Effects of vegetable feed ingredients on bone health in Atlantic salmon. Journal of Applied Ichthyology 26, 327-333.
Benedet, S., Andersson, E., Mittelholzer, C., Taranger, G.L., and Bjornsson, B.T. (2010). Pituitary and plasma growth hormone dynamics during sexual maturation of female Atlantic salmon. General and Comparative Endocrinology 167, 77-85.
Sundh, H., Olsen, R.E., Fridell, F., Gadan, K., Evensen, O., Glette, J., Taranger, G.L., Myklebust, R., and Sundell, K. (2009). The effect of hyperoxygenation and reduced flow in fresh water and subsequent infectious pancreatic necrosis virus challenge in sea water, on the intestinal barrier integrity in Atlantic salmon, Salmo salar L. Journal of Fish Diseases 32, 687-698.
Nielsen, E.E., Hemmer-Hansen, J., Poulsen, N.A., Loeschcke, V., Moen, T., Johansen, T., Mittelholzer, C., Taranger, G.L., Ogden, R., and Carvalho, G.R. (2009). Genomic signatures of local directional selection in a high gene flow marine organism; the Atlantic cod (Gadus morhua). Bmc Evolutionary Biology 9.
Mittelholzer, C., Andersson, E., Taranger, G.L., Karlsen, O., and Norberg, B. (2009). Quantification of gonadotropin subunits GP alpha, FSH beta, and LH beta mRNA expression from Atlantic cod (Gadus morhua) throughout a reproductive cycle. Comparative Biochemistry and Physiology B-Biochemistry & Molecular Biology 153, 288-295.
Mittelholzer, C., Andersson, E., Taranger, G.L., Consten, D., Hirai, T., Senthilkumaran, B., Nagahama, Y., and Norberg, B. (2009). Molecular characterization and quantification of the gonadotropin receptors FSH-R and LH-R from Atlantic cod (Gadus morhua). General and Comparative Endocrinology 160, 47-58.
Glover, K.A., Ottera, H., Olsen, R.E., Slinde, E., Taranger, G.L., and Skaala, O. (2009). A comparison of farmed, wild and hybrid Atlantic salmon (Salmo salar L.) reared under farming conditions. Aquaculture 286, 203-210.
Garcia-Lopez, A., Bogerd, J., Granneman, J.C.M., van Dijk, W., Trant, J.M., Taranger, G.L., and Schulz, R.W. (2009). Leydig Cells Express Follicle-Stimulating Hormone Receptors in African Catfish. Endocrinology 150, 357-365.
Andersson, E., Nijenhuis, W., Male, R., Swanson, P., Bogerd, J., Taranger, G.L., and Schulz, R.W. (2009). Pharmacological characterization, localization and quantification of expression of gonadotropin receptors in Atlantic salmon (Salmo salar L.) ovaries. General and Comparative Endocrinology 163, 329-339.
Almeida, F.F.L., Taranger, G.L., Norberg, B., Karlsen, O., Bogerd, J., and Schulz, R.W. (2009). Photoperiod-Modulated Testis Maturation in Atlantic Cod (Gadus morhua, L.). Biology of Reproduction 80, 631-640.
Vikingstad, E., Andersson, E., Norberg, B., Mayer, I., Klenke, U., Zohar, Y., Stefansson, S.O., and Taranger, G.L. (2008). The combined effects of temperature and GnRHa treatment on the final stages of sexual maturation in Atlantic salmon (Salmo salar L.) females. Fish Physiology and Biochemistry 34, 289-298.
Muncaster, S., Andersson, E., Skiftesvik, A.B., Opstad, I., Taranger, G.L., and Norberg, B. (2008). Seasonal reproductive cycle of Ballan wrasse (Labrus bergylta) in Norway. Cybium 32, 199-199.
Migaud, H., Davie, A., Taranger, G.L., Taylor, J., Martinez-Chavez, C.C., and Carrillo, M. (2008). Diversity of circadian organisation and light sensitivities among teleosts species. Cybium 32, 37-37.
Benedet, S., Bjornsson, B.T., Taranger, G.L., and Andersson, E. (2008). Cloning of somatolactin alpha, beta forms and the somatolactin receptor in Atlantic salmon: Seasonal expression profile in pituitary and ovary of maturing female broodstock. Reproductive Biology and Endocrinology 6.
Almeida, F.F.L., Kristoffersen, C., Taranger, G.L., and Schulz, R.W. (2008). Spermatogenesis in Atlantic cod (Gadus morhua): A novel model of cystic germ cell development. Biology of Reproduction 78, 27-34.
Meier, S., Andersen, T.E., Norberg, B., Thorsen, A., Taranger, G.L., Kjesbu, O.S., Dale, R., Morton, H.C., Klungsoyr, J., and Svardal, A. (2007). Effects of alkylphenols on the reproductive system of Atlantic cod (Gadus morhua). Aquatic Toxicology 81, 207-218.
Fridell, F., Gadan, K., Sundh, H., Taranger, G.L., Glette, J., Olsen, R.E., Sundell, K., and Evensen, O. (2007). Effect of hyperoxygenation and low water flow on the primary stress response and susceptibility of Atlantic salmon Salmo salar L. to experimental challenge with IPN virus. Aquaculture 270, 23-35.
Taranger, G.L., Aardal, L., Hansen, T., and Kjesbu, O.S. (2006). Continuous light delays sexual maturation and increases growth of Atlantic cod (Gadus morhua L.) in sea cages. Ices Journal of Marine Science 63, 365-375.
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.
Migaud, H., Taylor, J.F., Taranger, G.L., Davie, A., Cerda-Reverter, J.M., Carrillo, M., Hansen, T., and Bromage, N.R. (2006). A comparative ex vivo and in vivo study of day and night perception in teleosts species using the melatonin rhythm. Journal of Pineal Research 41, 42-52.
Kjesbu, O.S., Taranger, G.L., and Trippel, E.A. (2006). Gadoid mariculture: Development and future challenges - Introduction. Ices Journal of Marine Science 63, 187-191.
Karlsen, O., Norberg, B., Kjesbu, O.S., and Taranger, G.L. (2006). Effects of photoperiod and exercise on growth, liver size, and age at puberty in farmed Atlantic cod (Gadus morhua L.). Ices Journal of Marine Science 63, 355-364.
Fjelldal, P.G., Grotmol, S., Kryvi, H., Taranger, G.L., Hansen, T., Porter, M.J.R., and Totland, G.K. (2004). Pinealectomy induces malformation of the spine and reduces the mechanical strength of the vertebrae in Atlantic salmon, Salmo salar. Journal of Pineal Research 36, 132-139.
Taranger, G.L., Vikingstad, E., Klenke, U., Mayer, I., Stefansson, S.O., Norberg, B., Hansen, T., Zohar, Y., and Andersson, E. (2003). Effects of photoperiod, temperature and GnRHa treatment on the reproductive physiology of Atlantic salmon (Salmo salar L.) broodstock. Fish Physiology and Biochemistry 28, 403-406.
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.
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.
Hevroy, 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.
Dahle, R., Taranger, G.L., Karlsen, O., Kjesbu, O.S., and Norberg, B. (2003). Gonadal development and associated changes in liver size and sexual steroids during the reproductive cycle of captive male and female Atlantic cod (Gadus morhua L.). Comparative Biochemistry and Physiology a-Molecular & Integrative Physiology 136, 641-653.
Andersson, E., Kumar, S.R., Ackers, J., Taranger, G.L., Stefansson, S.O., and Trant, J.M. (2003). Photoperiod and temperature affects seasonal ovarian gene expression of p450 aromatase and gonadotropin receptors in Atlantic Salmon (Salmo salar L.) broodstock. Fish Physiology and Biochemistry 28, 411-411.
Weltzien, F.A., Taranger, G.L., Karlsen, O., and Norberg, B. (2002). Spermatogenesis and related plasma androgen levels in Atlantic halibut (Hippoglossus hippoglossus L.). Comparative Biochemistry and Physiology a-Molecular and Integrative Physiology 132, 567-575.
Hemre, G.I., Taranger, G.L., and Hansen, T. (2002). Gonadal development influences nutrient utilisation in cod (Gadus morhua). Aquaculture 214, 201-209.
Sunde, J., Taranger, G.L., and Rungruangsak-Torrissen, K. (2001). Digestive protease activities and free amino acids in white muscle as indicators for feed conversion efficiency and growth rate in Atlantic salmon (Salmo salar L.). Fish Physiology and Biochemistry 25, 335-345.
Oppedal, F., Juell, J.E., Taranger, G.L., and Hansen, T. (2001). Artificial light and season affects vertical distribution and swimming behaviour of post-smolt Atlantic salmon in sea cages. Journal of Fish Biology 58, 1570-1584.
Hansen, T., Karlsen, O., Taranger, G.L., Hemre, G.I., Holm, J.C., and Kjesbu, O.S. (2001). Growth, gonadal development and spawning time of Atlantic cod (Gadus morhua) reared under different photoperiods. Aquaculture 203, 51-67.
Andersson, E., Fjelldal, P.G., Klenke, U., Vikingstad, E., Taranger, G.L., Zohar, Y., and Stefansson, S.O. (2001). Three forms of GnRH in the brain and pituitary of the turbot, Scophthalmus maximus: immunological characterization and seasonal variation. Comparative Biochemistry and Physiology B-Biochemistry & Molecular Biology 129, 551-558.
Endal, H.P., Taranger, G.L., Stefansson, S.O., and Hansen, T. (2000). Effects of continuous additional light on growth and sexual maturity in Atlantic salmon, Salmo salar, reared in sea cages. Aquaculture 191, 337-349.
Taranger, G.L., Haux, C., Hansen, T., Stefansson, S.O., Bjornsson, B.T., Walther, B.T., and Kryvi, H. (1999). Mechanisms underlying photoperiodic effects on age at sexual maturity in Atlantic salmon, Salmo salar. Aquaculture 177, 47-60.
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.
Taranger, G.L., Haux, C., Stefansson, S.O., Bjornsson, B.T., Walther, B.T., and Hansen, T. (1998). Abrupt changes in photoperiod affect age at maturity, timing of ovulation and plasma testosterone and oestradiol-17 beta profiles in Atlantic salmon, Salmo salar. Aquaculture 162, 85-98.
Oppedal, F., Taranger, G.L., Juell, J.E., Fosseidengen, 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.
Imsland, A.K., Folkvord, A., Grung, G.L., Stefansson, S.O., and Taranger, G.L. (1997). Sexual dimorphism in growth and maturation of turbot, Scophthalmus maximus (Rafinesque, 1810). Aquaculture Research 28, 101-114.
Oppen-Berntsen, D.O., Olsen, S.O., Rong, C.J., Taranger, G.L., Swanson, P. and Walther, B.T., 1994, Plasma levels of eggshell zr-proteins, estradiol-17, and gonadotropins during an annual reproductive cycle of Atlantic salmon (Salmo salar L.). J. Exp. Zool. 268, 59-70.
Björnsson, B.Th., Taranger, G.L., Hansen, T., Stefansson, S.O. and Haux, C. (1994). The inter¬relation between photoperiod, growth hormone and sexual maturation of adult Atlantic salmon. Gen. Comp. Endocrinol. 93, 70-81.
Taranger, G.L. and Hansen,.T. (1993) Ovulation and egg survival following exposure of Atlantic salmon, Salmo salar L., broodstock to different water temperatures. Aquaculture research, 24, 151-156.
Stefansson, S.O., Hansen, T. and Taranger, G.L. (1993). Growth and parr-smolt transformation of Atlantic salmon (Salmo salar L.) under different light intensities and subsequent survival and growth in seawater. Aquacultural Engineering 13, 231-243.
Taranger, G.L., Stefansson, S.O. and Hansen, T. (1992). Advancement and synchronization of ovulation in Atlantic salmon (Salmo salar L.) following injections of LHRH analogue. Aquaculture 102, 169-175
Stefansson, S.O., Björnsson, B.T., Hansen, T., Haux, C., Taranger, G.L. and Saunders, R.L. (1991). Growth, parr-smolt transformation and changes in growth hormone of Atlantic salmon (Salmo salar) under different photoperiods. Can. J. Fish. Aquat. Sci. 48, 2100-2108.
Kråkenes, R., Hansen, T., Stefansson, S.O. and Taranger, G.L. (1991). Continuous light increases growth of Atlantic salmon (Salmo salar) postsmolts in seacages, Aquaculture 95, 281-287.
Stefansson, S. O., Hansen, T. and Taranger, G.L. (1990). The influence of light on gro¬wth and parr-smolt transforma¬tion of Atlantic salmon (Salmo salar): Effects of quality, intensity and perio¬dicity. Can. Tech. Rep. Fish. Aquat. Sci. 1761, 79-84.
Hansen, T, Christiansen, R., Nortvedt, R., Stefansson, S.O. and Taranger, G.L., (1990). Artificial hatching substrates improve growth and yolk absorption of salmonids. Can. Tech. Rep. Fish. Aquat. Sci. 1761, 69-75.