Head supervisor: BIO370 Cell- and developmental biology; MAR350 Advanced aquaculture

Poster

• Eilertsen, Mariann; Norland, Sissel; Dolan, David William Peter et al. (2024). Onset of circadian rhythmicity in the brain of Atlantic salmon is linked to exogenous feeding. (external link)
• Norland, Sissel; Eilertsen, Mariann; Gomes, Ana Cristina Da Silva et al. (2024). Development of appetite and rhythmicity in Atlantic salmon during the transition from endogenous to exogenous feeding​. (external link)
• Horne, Christine; Eilertsen, Mariann; Denker, Elsa et al. (2024). The photoreceptive and melatonin producing pineal organ of Atlantic salmon. (external link)
• Eilertsen, Mariann; Helvik, Jon Vidar (2016). The effect of narrow banded LED light on development and growth performance. (external link)
• Helvik, Jon Vidar; Ebbesson, Lars; Eilertsen, Marianne et al. (2004). Early expression of VA opsin in Atlantic halibut. (external link)
• Søviknes, Anne Mette; Drivenes, Øyvind; Wu, Jun J. et al. (2002). Molecular cloning and characterisation of ultraviolet-sensitive opsin promoter from turbot. (external link)
• Drivenes, Øyvind; Søviknes, Anne Mette; Ebbesson, Lars O. E. et al. (2002). A dual non-visual photoreception system consisting of two melanopsins found in teleosts. (external link)
• Drivenes, Øyvind; Søviknes, Anne Mette; Seo, Hee-Chan et al. (2001). A novel nonvisual pigment gene cloned from teleost retina. (external link)
• Doldán Dans, María Jesús; Holmqvist, Bo; Prego Martinez, Benjamín et al. (2001). Differentiation of serotonergic circuits in the brain of the turbot (Psetta maxima). (external link)

Academic lecture

• Horne, Christine; Eilertsen, Mariann; Denker, Elsa et al. (2024). The photoreceptive pineal organ of the Atlantic salmon. (external link)
• Horne, Christine; Helvik, Jon Vidar; Denker, Elsa et al. (2024). The complexity of opsins in the melatonin producing pineal organ of Atlantic salmon. (external link)
• Helvik, Jon Vidar (2024). Photoreception in teleosts and adaption of the visual system in the marine environment. (external link)
• Eilertsen, Mariann; Norland, Sissel; Dolan, David William Peter et al. (2024). Onset of circadian rhythmicity in the brain of Atlantic salmon is linked to exogenous feeding. (external link)
• Helvik, Jon Vidar (2024). Nonvisual photoreception, the link between light environment and biological processes in Atlantic salmon a species with life history transitions programmed to seasonal changes. (external link)
• Norland, Sissel; Gomes, Ana Cristina Da Silva; Rønnestad, Ivar et al. (2023). Effekt av lys på appetittkontroll under startfôring hos Atlantisk laks. (external link)
• Norland, Sissel; Rønnestad, Ivar; Eilertsen, Mariann et al. (2022). Topology of the Central Melanocortin Neuropeptides in the Atlantic Salmon Parr Brain. (external link)
• Eilertsen, Mariann; Dolan, David William Peter; Bolton, Charlotte M. et al. (2022). Photoreception and transcriptome response to light during early development of Atlantic salmon (Salmon salar). (external link)
• Eilertsen, Mariann; Dolan, David William Peter; Bolton, Charlotte M. et al. (2020). The effect of light environment on transcriptome and early development in Atlantic salmon. (external link)
• Eilertsen, Mariann; Dolan, David William Peter; Bolton, Charlotte M. et al. (2019). Genomic approach to identify nonvisual photoreceptors in Atlantic salmon and effects of light environment on early development. (external link)
• Eilertsen, Mariann; Karlsen, Rita; Sveier, Harald et al. (2018). The effect of narrow banded LED light on development and growth performance. (external link)
• Gorissen, Marnix; Nilsen, Tom Ole; Bye-Ingebrigtsen, Einar et al. (2014). EXPLORING PHYSIOLOGICAL FUNCTIONS OF THE PLEIOTROPHIC MELANOCORTIN ALPHA-MSH IN ATLANTIC SALMON. (external link)
• Helvik, Jon Vidar; Søviknes, Anne Mette; Drivenes, Øyvind (2002). Topographic specialisation of photoreceptor cells within retina of marine fish larvae. (external link)
• Helvik, Jon Vidar; Søviknes, Anne Mette; Drivenes, Øyvind (2002). The developing visual system and metamorphosis in flatfish. (external link)
• Drivenes, Øyvind; Søviknes, Anne Mette; Ebbesson, Lars O. E. et al. (2002). Visual and non-visual reception in marine fish larvae. (external link)
• Kvenseth, Anne Mette; Pittman, Karin; Helvik, Jon Vidar (1993). The development of the halibut eye. (external link)

Academic article

• Norland, Sissel; Eilertsen, Mariann; Rønnestad, Ivar et al. (2023). Mapping key neuropeptides involved in the melanocortin system in Atlantic salmon (Salmo salar) brain. (external link)
• Norland, Sissel; Gomes, Ana S.; Rønnestad, Ivar et al. (2023). Light conditions during Atlantic salmon embryogenesis affect key neuropeptides in the melanocortin system during transition from endogenous to exogenous feeding. (external link)
• Horne, Christine; Helvik, Jon Vidar; Fleming, Mitchell Stewart et al. (2022). Mapping the pattern of essential neuroendocrine cells related to puberty and VA opsin expression provides further insight in the photoreceptive regulation of the BPG axis in Atlantic salmon (Salmo salar). (external link)
• Eilertsen, Mariann; Davies, Wayne I. L.; Patel, Dharmeshkumar et al. (2022). An EvoDevo Study of Salmonid Visual Opsin Dynamics and Photopigment Spectral Sensitivity. (external link)
• Eilertsen, Mariann; Dolan, David William Peter; Bolton, Charlotte M. et al. (2022). Photoreception and transcriptomic response to light during early development of a teleost with a life cycle tightly controlled by seasonal changes in photoperiod. (external link)
• Eilertsen, Mariann; Clokie, Benjamin G.J.; Ebbesson, Lars et al. (2021). Neural activation in photosensitive brain regions of Atlantic salmon (Salmo salar) after light stimulation. (external link)
• Bolton, Charlotte M.; Bekaert, Michaël; Eilertsen, Mariann et al. (2021). Rhythmic Clock Gene Expression in Atlantic Salmon Parr Brain. (external link)
• Kryvi, Harald; Nordvik, Kari; Fjelldal, Per Gunnar et al. (2020). Heads and tails: The notochord develops differently in the cranium and caudal fin of Atlantic Salmon (Salmo salar, L.). (external link)
• Eilertsen, Mariann; Valen, Ragnhild; Drivenes, Øyvind et al. (2018). Transient photoreception in the hindbrain is permissive to the life history transition of hatching in Atlantic halibut. (external link)
• Valen, Ragnhild; Karlsen, Rita; Helvik, Jon Vidar (2018). Environmental, population and life-stage plasticity in the visual system of Atlantic cod. (external link)
• Busserolles de, Fanny; Cortesi, Fabio; Helvik, Jon Vidar et al. (2017). Pushing the limits of photoreception in twilight conditions: The rod-like cone retina of the deep-sea pearlsides. (external link)
• Valen, Ragnhild; Eilertsen, Mariann; Edvardsen, Rolf et al. (2016). The two-step development of a duplex retina involves distinct events of cone and rod neurogenesis and differentiation. (external link)
• Valen, Ragnhild; Edvardsen, Rolf; Søviknes, Anne Mette et al. (2014). Molecular evidence that only two opsin subfamilies, the blue light- (SWS2) and green light-sensitive (RH2), drive color vision in Atlantic cod (Gadus morhua).. (external link)
• Eilertsen, Mariann; Drivenes, Øyvind; Edvardsen, Rolf et al. (2014). The exorhodopsin and melanopsin systems in the pineal complex and brain at early developmental stages of Atlantic halibut (Hippoglossus hippoglossus). (external link)
• Kamisaka, Yuko; Helvik, Jon Vidar; Tagawa, Masatomo et al. (2013). Evidence for an ontogenetic change from pre-programmed to meal-responsive cck production in Atlantic herring, Clupea harengus L. (external link)
• Sandbakken, Mari; Ebbesson, Lars O.E.; Stefansson, Sigurd Olav et al. (2012). Isolation and characterization of melanopsin photoreceptors of atlantic salmon (Salmo salar). (external link)
• Ebbesson, Lars O.E.; Nilsen, Tom Ole; Helvik, Jon Vidar et al. (2011). Corticotropin-Releasing Factor Neurogenesis during Midlife Development in Salmon: Genetic, Environmental and Thyroid Hormone Regulation. (external link)
• Helvik, Jon Vidar; Rødahl, Eyvind; Drivenes, Øyvind et al. (2009). Identification and Characterization of Two Zebrafish Nectin-1 Genes That Are Differentially Expressed in the Developing Eye and Brain. (external link)
• Karlsen, Marius; Nylund, Are; Watanabe, Kuninori et al. (2008). Characterization of 'Candidatus Clavochlamydia salmonicola': an intracellular bacterium infecting salmonid fish. (external link)
• Hoppmann, Verena; Wu, Jun J.; Søviknes, Anne Mette et al. (2008). Expression of the eight AMPA receptor subunit genes in the developing central nervous system and sensory organs of zebrafish. (external link)
• Zhao, Xiaofeng; Fjose, Anders; Larsen, Natalia et al. (2008). Treatment with small interfering RNA affects the microRNA pathway and causes unspecific defects in zebrafish embryos. (external link)
• Kamisaka, Y; Drivenes, Øyvind; Kurokawa, T et al. (2005). Cholecystokinin mRNA in Atlantic herring, Clupea harengus - molecular cloning, characterization, and distribution in the digestive tract during the early life stages. (external link)
• ALLISON,, W. TED; DANN, STEPHEN G; Helvik, Jon Vidar et al. (2003). Ontogeny of Ultraviolet-Sensitive Cones in the Retina of Rainbow Trout (Oncorhynchus mykiss). (external link)
• Drivenes, Øyvind; Søviknes, Anne Mette; Ebbesson, Lars O. E. et al. (2003). Isolation and characterization of two teleost melanopsin genes and their differential expression within the inner retina and brain. (external link)
• Weltzien, Finn Arne; Nordberg, Birgitta; Helvik, Jon Vidar et al. (2003). Identification and localization of eight distinct hormone-producing cell types in the pituitary of male Atlantic halibut (Hippoglossus hippoglossus L.). (external link)
• Weltzien, Finn-Arne; Andersen, Øivind; Norberg, Birgitta et al. (2003). Identification and localization of eight distinct hormone-producing cell types in the pituitary of male Atlantic halibut (hippoglossus hippoglossus). (external link)
• Helvik, Jon Vidar; Drivenes, Øyvind; Næss, Tore et al. (2001). Molecular cloning and characterisation of five opsin genes from the marine flatfish Atlantic halibut (Hippoglossus hippoglossus). (external link)
• Helvik, Jon Vidar; Drivenes, Øyvind; Habroe, Torstein et al. (2001). Topography of different photoreceptor cell types in the larval retina of Atlantic halibut (Hippoglossus hippoglossus). (external link)
• Karlsen, Ørjan; Skiftesvik, Anne Berit; Helvik, Jon Vidar (1998). The effect of light on activity and growth of Atlantic halibut, Hippoglossus hippoglossus L., yolk-sac larvae. (external link)
• Helvik, Jon Vidar; Karlsen, Ørjan (1996). The effect of light- and dark-rearing on the development of the eyes of Atlantic halibut (Hippoglossus hippoglossus) yolk sac larvae. (external link)
• Kvenseth, A. M.; Pittman, Karin; Helvik, Jon Vidar (1994). Når kan kveitelarven se? - en brikke i puslespillet omkring startforing av kveite. (external link)
• Helvik, Jon Vidar; Walther, Bernt T. (1993). Development of hatchability in halibut (Hippoglossus hippoglossus) embryos. (external link)
• Helvik, Jon Vidar; Walther, Bernt T. (1992). Photo-regulation of the hatching process in halibut (Hippoglossus hippoglossus) eggs. (external link)
• Oppen-Berntsen, D. O.; Hyllner, S. J.; Haux, C. et al. (1992). Eggshell zona radiat-proteins: Extra-ovarian origin and induction by estradiol-17_b. (external link)
• Helvik, Jon Vidar; Flood, P. R.; Walther, Bernt T. et al. (1991). Morphogenesis of the hatching gland of Atlantic halibut (Hippoglossus hippoglossus). (external link)
• Helvik, Jon Vidar; Oppen-Berntsen, D. O.; Walther, Bernt T. (1991). The hatching mechanism in Atlantic halibut (Hippoglossus hippoglossus). (external link)
• Hyllner, S. J.; Oppen-Berntsen, D. O.; Helvik, Jon Vidar et al. (1991). Oestradiol -17_b induces the major vitellin envelope proteins in both sexes in teleosts. (external link)
• Hyllner, S. J.; Oppen-Berntsen, D. O.; Helvik, Jon Vidar et al. (1991). Oestradiol 17_b induces the major vitelline envelope proteins in both sexes in teleosts. (external link)
• Helvik, Jon Vidar; Oppen-Berntsen, D. O.; Walther, Bernt T. (1991). The hatching mechanism in Atlantic halibut (#_H#_i#_p#_p#_o#_g#_l#_o#_s#_s#_u#_s#_ #_h#_i#_p#_p#_o#_g#_l#_o#_s#_s#_u#_s). (external link)
• Helvik, Jon Vidar; Oppen-Berntsen, D. O.; Flood, P. R. et al. (1991). Morphogenesis of the hatching gland of Atlantic halibut (Hippoglossus hippoglossus). (external link)
• Bergh, Øivind; Hansen, Geir Høvik; Jelmert, Anders et al. (1990). Bakterier på kveiteegg er en viktig årsak til dødelighet. (external link)

Doctoral dissertation

• Valen, Ragnhild; Helvik, Jon Vidar (2016). Visual photoreception in Atlantic cod (Gadus morhua) – Genomic restrictions, neurogenesis and life history transformation. (external link)
• Skern, Rasmus; Nilsen, Frank; Helvik, Jon Vidar et al. (2005). Trypsin and trypsin-like peptidases from Lepeophtheirus salmonis. Functional implications from molecular studies. (external link)
• Helvik, Jon Vidar (1992). Biology of hatching : mechanism and control of hatching in eggs of halibut (Hippoglossus hippoglossus). (external link)

Popular scientific article

• Nilsen, Tom Ole; Lukas, Juliane; Valen, Ragnhild et al. (2015). Utvikling av osmoreguleringssystemet hos torskelarver startfôret på rotatorier eller naturlig zooplankton. (external link)

Report

• Schander, Christoffer; Helvik, Jon Vidar; Lindblom, Louise et al. (2007). Biology Education at University of Bergen Part I. A Background Document. (external link)
• Folkvord, Arild; Blom, Geir; Helvik, Jon Vidar et al. (1998). Teori- og eksperimentbasert studie av rekruttering hos marin fisk. Sluttrapport for del I av Strategisk Program. (external link)

See a complete overview of publications in Cristin.

Helvik JV, Rødahl E, Drivenes, O and Haarr L  (2009)  Identification and Characterization of Two Zebrafish Nectin-1 Genes That Are Differentially Expressed in the Developing Eye and Brain Developmental dynamics 238(1): 43-55

 

Xiao-Feng Z, Fjose A, Larsen N, Helvik JV and Drivenes O (2008) Treatment with small interfering RNA affects the microRNA pathway and causes unspecific defects in zebrafish embryos FEBS Journal 275(9) 2177-2184

 

Hoppmann V, Wu JJ, Søviknes AM, Helvik JV, and Becker, TS. (2008). Expression of the eight AMPA Receptor Subunit Genes in the Developing Central Nervous System and Sensory Organs of Zebrafish Developmental Dynamics J237(3):788-799

 

Karlsen, M., Nylund, A., Watanabe, K., Helvik, J.V., Nylund, S. and Plarre, H. (2008) Characterization of ‘Candidatus Clavochlamydia salmonicola’: an intracellular bacterium infecting salmonid fish. Environmental Microbiology 10 (1), 208–218

 

Kamisaka, Y., Drivenes, Ø., Kurokawa, T., Tagawa, M., Rønnestad, I., Tanaka, M., and  Helvik, J.V. (2005) Cholecystokinin mRNA in Atlantic herring, Clupea harengus - molecular cloning, characterization, and distribution in the digestive tract during the early life stages PEPTIDES 26 (3): 385-393