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Jon Vidar Helvik

Professor
  • E-mailVidar.Helvik@uib.no
  • Phone+47 55 58 43 71+47 976 18 925
  • Visitor Address
    Thormøhlensgt. 53 A/B
  • Postal Address
    Postboks 7803
    5020 Bergen

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

Academic article
  • 2018. Transient photoreception in the hindbrain is permissive to the life history transition of hatching in Atlantic halibut. Developmental Biology. 129-138.
  • 2018. Environmental, population and life-stage plasticity in the visual system of Atlantic cod. Journal of Experimental Biology. 1-13.
  • 2017. Pushing the limits of photoreception in twilight conditions: The rod-like cone retina of the deep-sea pearlsides. Science Advances. 1-13.
  • 2016. The two-step development of a duplex retina involves distinct events of cone and rod neurogenesis and differentiation. Developmental Biology. 389-401.
  • 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.
  • 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.
  • 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.
  • 2012. Isolation and characterization of melanopsin photoreceptors of atlantic salmon (Salmo salar). Journal of Comparative Neurology. 3727-3744.
  • 2011. Corticotropin-Releasing Factor Neurogenesis during Midlife Development in Salmon: Genetic, Environmental and Thyroid Hormone Regulation. Journal of neuroendocrinology. 733-741.
  • 2009. Identification and Characterization of Two Zebrafish Nectin-1 Genes That Are Differentially Expressed in the Developing Eye and Brain. Developmental Dynamics. 43-55.
  • 2008. Treatment with small interfering RNA affects the microRNA pathway and causes unspecific defects in zebrafish embryos. The FEBS Journal. 2177-2184.
  • 2008. Expression of the eight AMPA receptor subunit genes in the developing central nervous system and sensory organs of zebrafish. Developmental Dynamics. 788-799.
  • 2008. Characterization of 'Candidatus Clavochlamydia salmonicola': an intracellular bacterium infecting salmonid fish. Environmental Microbiology. 208-218.
  • 2005. Cholecystokinin mRNA in Atlantic herring, Clupea harengus - molecular cloning, characterization, and distribution in the digestive tract during the early life stages. Peptides.
  • 2003. Ontogeny of Ultraviolet-Sensitive Cones in the Retina of Rainbow Trout (Oncorhynchus mykiss). Journal of Comparative Neurology. 294-306.
  • 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.
  • 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.
  • 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.
  • 2001. Topography of different photoreceptor cell types in the larval retina of Atlantic halibut (Hippoglossus hippoglossus). Journal of Experimental Biology. 2553-2559.
  • 2001. Molecular cloning and characterisation of five opsin genes from the marine flatfish Atlantic halibut (Hippoglossus hippoglossus). Visual Neuroscience. 767-780.
  • 1998. The effect of light on activity and growth of Atlantic halibut, Hippoglossus hippoglossus L., yolk-sac larvae. Aquaculture Research. 899-912.
  • 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.
  • 1994. Når kan kveitelarven se? - en brikke i puslespillet omkring startforing av kveite. Norsk Fiskeoppdrett. 30-31.
  • 1993. Development of hatchability in halibut (Hippoglossus hippoglossus) embryos. International Journal of Developmental Biology. 487-490.
  • 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.
  • 1992. Eggshell zona radiat-proteins: Extra-ovarian origin and induction by estradiol-17_b. International Journal of Developmental Biology. 247-254.
  • 1991. The hatching mechanism in Atlantic halibut (Hippoglossus hippoglossus). International Journal of Developmental Biology. 9-16.
  • 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.
  • 1991. Oestradiol 17_b induces the major vitelline envelope proteins in both sexes in teleosts. Journal of Endocrinology. 229-236.
  • 1991. Oestradiol -17_b induces the major vitellin envelope proteins in both sexes in teleosts. Journal of Endocrinology. 229-236.
  • 1991. Morphogenesis of the hatching gland of Atlantic halibut (Hippoglossus hippoglossus). Roux's Archives of Developmental Biology. 180-187.
  • 1991. Morphogenesis of the hatching gland of Atlantic halibut (Hippoglossus hippoglossus). Roux's Archives of Developmental Biology. 180-187.
  • 1990. Bakterier på kveiteegg er en viktig årsak til dødelighet. Norsk Fiskeoppdrett. 32-33.
Report
  • 2007. Biology Education at University of Bergen Part I. A Background Document. .
  • 1998. Teori- og eksperimentbasert studie av rekruttering hos marin fisk. Sluttrapport for del I av Strategisk Program. .
Academic lecture
  • 2014. EXPLORING PHYSIOLOGICAL FUNCTIONS OF THE PLEIOTROPHIC MELANOCORTIN ALPHA-MSH IN ATLANTIC SALMON.
  • 2002. Visual and non-visual reception in marine fish larvae.
  • 2002. Topographic specialisation of photoreceptor cells within retina of marine fish larvae.
  • 2002. The developing visual system and metamorphosis in flatfish.
  • 1993. The development of the halibut eye.
Popular scientific article
  • 2015. Utvikling av osmoreguleringssystemet hos torskelarver startfôret på rotatorier eller naturlig zooplankton. Norsk Fiskeoppdrett. 36-38.
Doctoral dissertation
  • 2016. Visual photoreception in Atlantic cod (Gadus morhua) – Genomic restrictions, neurogenesis and life history transformation.
  • 2005. Trypsin and trypsin-like peptidases from Lepeophtheirus salmonis. Functional implications from molecular studies.
  • 1992. Biology of hatching : mechanism and control of hatching in eggs of halibut (Hippoglossus hippoglossus).
Poster
  • 2004. Early expression of VA opsin in Atlantic halibut.
  • 2002. Molecular cloning and characterisation of ultraviolet-sensitive opsin promoter from turbot.
  • 2002. A dual non-visual photoreception system consisting of two melanopsins found in teleosts.
  • 2001. Differentiation of serotonergic circuits in the brain of the turbot (Psetta maxima).
  • 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