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Jon Vidar Helvik's picture

Jon Vidar Helvik

Professor
Department of Biological Sciences (BIO)
  • E-mailvidar.helvik@uib.no
  • Phone+47 55 58 43 71+47 976 18 925
  • Visitor Address
    Thormøhlens gate 53 A/B
    5006 Bergen
  • Postal Address
    Postboks 7803
    5020 Bergen

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

Academic article
  • Show author(s) (2023). Mapping key neuropeptides involved in the melanocortin system in Atlantic salmon (Salmo salar) brain. Journal of Comparative Neurology. 89-115.
  • Show author(s) (2022). Photoreception and transcriptomic response to light during early development of a teleost with a life cycle tightly controlled by seasonal changes in photoperiod. PLoS Genetics. 28 pages.
  • Show author(s) (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). Brain, Behavior and Evolution. 32-43.
  • Show author(s) (2022). An EvoDevo Study of Salmonid Visual Opsin Dynamics and Photopigment Spectral Sensitivity. Frontiers in Neuroanatomy. 15 pages.
  • Show author(s) (2021). Rhythmic Clock Gene Expression in Atlantic Salmon Parr Brain. Frontiers in Physiology.
  • Show author(s) (2021). Neural activation in photosensitive brain regions of Atlantic salmon (Salmo salar) after light stimulation. PLOS ONE. 1-17.
  • Show author(s) (2020). Heads and tails: The notochord develops differently in the cranium and caudal fin of Atlantic Salmon (Salmo salar, L.). Stem Cell Reviews and Reports (SCRR). 21 pages.
  • Show author(s) (2018). Transient photoreception in the hindbrain is permissive to the life history transition of hatching in Atlantic halibut. Developmental Biology. 129-138.
  • Show author(s) (2018). Environmental, population and life-stage plasticity in the visual system of Atlantic cod. Journal of Experimental Biology. 1-13.
  • Show author(s) (2017). Pushing the limits of photoreception in twilight conditions: The rod-like cone retina of the deep-sea pearlsides. Science Advances. 1-13.
  • Show author(s) (2016). The two-step development of a duplex retina involves distinct events of cone and rod neurogenesis and differentiation. Developmental Biology. 389-401.
  • Show author(s) (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. 4003-4022.
  • Show author(s) (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). PLOS ONE.
  • Show author(s) (2013). Evidence for an ontogenetic change from pre-programmed to meal-responsive cck production in Atlantic herring, Clupea harengus L. Comparative Biochemistry and Physiology A. 17-20.
  • Show author(s) (2012). Isolation and characterization of melanopsin photoreceptors of atlantic salmon (Salmo salar). Journal of Comparative Neurology. 3727-3744.
  • Show author(s) (2011). Corticotropin-Releasing Factor Neurogenesis during Midlife Development in Salmon: Genetic, Environmental and Thyroid Hormone Regulation. Journal of neuroendocrinology. 733-741.
  • Show author(s) (2009). Identification and Characterization of Two Zebrafish Nectin-1 Genes That Are Differentially Expressed in the Developing Eye and Brain. Developmental Dynamics. 43-55.
  • Show author(s) (2008). Treatment with small interfering RNA affects the microRNA pathway and causes unspecific defects in zebrafish embryos. The FEBS Journal. 2177-2184.
  • Show author(s) (2008). Expression of the eight AMPA receptor subunit genes in the developing central nervous system and sensory organs of zebrafish. Developmental Dynamics. 788-799.
  • Show author(s) (2008). Characterization of 'Candidatus Clavochlamydia salmonicola': an intracellular bacterium infecting salmonid fish. Environmental Microbiology. 208-218.
  • Show author(s) (2005). Cholecystokinin mRNA in Atlantic herring, Clupea harengus - molecular cloning, characterization, and distribution in the digestive tract during the early life stages. Peptides.
  • Show author(s) (2003). Ontogeny of Ultraviolet-Sensitive Cones in the Retina of Rainbow Trout (Oncorhynchus mykiss). Journal of Comparative Neurology. 294-306.
  • Show author(s) (2003). Isolation and characterization of two teleost melanopsin genes and their differential expression within the inner retina and brain. Journal of Comparative Neurology. 84-93.
  • Show author(s) (2003). Identification and localization of eight distinct hormone-producing cell types in the pituitary of male Atlantic halibut (hippoglossus hippoglossus). Comparative Biochemistry and Physiology A. 315-327.
  • Show author(s) (2003). Identification and localization of eight distinct hormone-producing cell types in the pituitary of male Atlantic halibut (Hippoglossus hippoglossus L.). Comparative biochemistry and physiology. B. Comparative biochemistry. 315-327.
  • Show author(s) (2001). Topography of different photoreceptor cell types in the larval retina of Atlantic halibut (Hippoglossus hippoglossus). Journal of Experimental Biology. 2553-2559.
  • Show author(s) (2001). Molecular cloning and characterisation of five opsin genes from the marine flatfish Atlantic halibut (Hippoglossus hippoglossus). Visual Neuroscience. 767-780.
  • Show author(s) (1998). The effect of light on activity and growth of Atlantic halibut, Hippoglossus hippoglossus L., yolk-sac larvae. Aquaculture Research. 899-912.
  • Show author(s) (1996). The effect of light- and dark-rearing on the development of the eyes of Atlantic halibut (Hippoglossus hippoglossus) yolk sac larvae. Marine and Freshwater Behaviour & Physiology. 107-121.
  • Show author(s) (1994). Når kan kveitelarven se? - en brikke i puslespillet omkring startforing av kveite. Norsk Fiskeoppdrett. 30-31.
  • Show author(s) (1993). Development of hatchability in halibut (Hippoglossus hippoglossus) embryos. International Journal of Developmental Biology. 487-490.
  • Show author(s) (1992). Photo-regulation of the hatching process in halibut (Hippoglossus hippoglossus) eggs. Journal of Experimental Zoology. Part A: Ecological Genetics and Physiology (JEZ). 204-209.
  • Show author(s) (1992). Eggshell zona radiat-proteins: Extra-ovarian origin and induction by estradiol-17_b. International Journal of Developmental Biology. 247-254.
  • Show author(s) (1991). The hatching mechanism in Atlantic halibut (Hippoglossus hippoglossus). International Journal of Developmental Biology. 9-16.
  • Show author(s) (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). International Journal of Developmental Biology. 9-16.
  • Show author(s) (1991). Oestradiol 17_b induces the major vitelline envelope proteins in both sexes in teleosts. Journal of Endocrinology. 229-236.
  • Show author(s) (1991). Oestradiol -17_b induces the major vitellin envelope proteins in both sexes in teleosts. Journal of Endocrinology. 229-236.
  • Show author(s) (1991). Morphogenesis of the hatching gland of Atlantic halibut (Hippoglossus hippoglossus). Roux's Archives of Developmental Biology. 180-187.
  • Show author(s) (1991). Morphogenesis of the hatching gland of Atlantic halibut (Hippoglossus hippoglossus). Roux's Archives of Developmental Biology. 180-187.
  • Show author(s) (1990). Bakterier på kveiteegg er en viktig årsak til dødelighet. Norsk Fiskeoppdrett. 32-33.
Report
  • Show author(s) (2007). Biology Education at University of Bergen Part I. A Background Document. .
  • Show author(s) (1998). Teori- og eksperimentbasert studie av rekruttering hos marin fisk. Sluttrapport for del I av Strategisk Program. .
Academic lecture
  • Show author(s) (2022). TOPOLOGY OF THE CENTRAL MELANOCORTIN NEUROPEPTIDES IN THE ATLANTIC SALMON PARR BRAIN.
  • Show author(s) (2022). Photoreception and transcriptome response to light during early development of Atlantic salmon (Salmon salar).
  • Show author(s) (2020). The effect of light environment on transcriptome and early development in Atlantic salmon.
  • Show author(s) (2019). Genomic approach to identify nonvisual photoreceptors in Atlantic salmon and effects of light environment on early development.
  • Show author(s) (2018). The effect of narrow banded LED light on development and growth performance.
  • Show author(s) (2014). EXPLORING PHYSIOLOGICAL FUNCTIONS OF THE PLEIOTROPHIC MELANOCORTIN ALPHA-MSH IN ATLANTIC SALMON.
  • Show author(s) (2002). Visual and non-visual reception in marine fish larvae.
  • Show author(s) (2002). Topographic specialisation of photoreceptor cells within retina of marine fish larvae.
  • Show author(s) (2002). The developing visual system and metamorphosis in flatfish.
  • Show author(s) (1993). The development of the halibut eye.
Popular scientific article
  • Show author(s) (2015). Utvikling av osmoreguleringssystemet hos torskelarver startfôret på rotatorier eller naturlig zooplankton. Norsk Fiskeoppdrett. 36-38.
Doctoral dissertation
  • Show author(s) (2016). Visual photoreception in Atlantic cod (Gadus morhua) – Genomic restrictions, neurogenesis and life history transformation.
  • Show author(s) (2005). Trypsin and trypsin-like peptidases from Lepeophtheirus salmonis. Functional implications from molecular studies.
  • Show author(s) (1992). Biology of hatching : mechanism and control of hatching in eggs of halibut (Hippoglossus hippoglossus).
Poster
  • Show author(s) (2016). The effect of narrow banded LED light on development and growth performance.
  • Show author(s) (2004). Early expression of VA opsin in Atlantic halibut.
  • Show author(s) (2002). Molecular cloning and characterisation of ultraviolet-sensitive opsin promoter from turbot.
  • Show author(s) (2002). A dual non-visual photoreception system consisting of two melanopsins found in teleosts.
  • Show author(s) (2001). Differentiation of serotonergic circuits in the brain of the turbot (Psetta maxima).
  • Show author(s) (2001). A novel nonvisual pigment gene cloned from teleost retina.

More information in national current research information system (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

Jon Vidar Helvik holds a MSc in Fisheries Biology (1988) and a PhD also in Fisheries Biology from UoB