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2023
1 Norland, Sissel; Eilertsen, Mariann; Rønnestad, Ivar; Helvik, Jon Vidar; Gomes, Ana S..
Mapping key neuropeptides involved in the melanocortin system in Atlantic salmon (Salmo salar) brain. Journal of Comparative Neurology 2023 ;Volume 531. p. 89-115
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2 Norland, Sissel; Gomes, Ana Cristina Da Silva; Rønnestad, Ivar; Helvik, Jon Vidar; Eilertsen, Mariann.
Effekt av lys på appetittkontroll under startfôring hos Atlantisk laks. Aqua Nor 2023; 2023-08-22 - 2023-08-24
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3 Norland, Sissel; Gomes, Ana S.; Rønnestad, Ivar; Helvik, Jon Vidar; Eilertsen, Mariann.
Light conditions during Atlantic salmon embryogenesis affect key neuropeptides in the melanocortin system during transition from endogenous to exogenous feeding. Frontiers in Behavioral Neuroscience 2023 ;Volume 17. p. -
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2022
4 Eilertsen, Mariann; Davies, Wayne I. L.; Patel, Dharmeshkumar; Barnes, Jonathan E.; Karlsen, Rita; Mountford, Jessica Kate; Stenkamp, Deborah; Patel, Jagdish Suresh; Helvik, Jon Vidar.
An EvoDevo Study of Salmonid Visual Opsin Dynamics and Photopigment Spectral Sensitivity. Frontiers in Neuroanatomy 2022 ;Volume 16. p. -
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5 Eilertsen, Mariann; Dolan, David William Peter; Bolton, Charlotte M.; Karlsen, Rita; Davies, Wayne I. L.; Edvardsen, Rolf Brudvik; Furmanek, Tomasz; Sveier, Harald; Migaud, Hervé; Helvik, Jon Vidar.
Photoreception and transcriptome response to light during early development of Atlantic salmon (Salmon salar). International Congress on the Biology Fish; 2022-06-28 - 2022-07-01
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6 Eilertsen, Mariann; Dolan, David William Peter; Bolton, Charlotte M.; Karlsen, Rita; Davies, Wayne I.L.; Edvardsen, Rolf Brudvik; Furmanek, Tomasz; Sveier, Harald; Migaud, Herve; Helvik, Jon Vidar.
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 2022 ;Volume 18.(12) p. -
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7 Horne, Christine; Helvik, Jon Vidar; Fleming, Mitchell Stewart; Fjelldal, Per Gunnar; Eilertsen, Mariann.
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 2022 ;Volume 98.(1) p. 32-43
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8 Norland, Sissel; Rønnestad, Ivar; Eilertsen, Mariann; Helvik, Jon Vidar; Gomes, Ana S..
TOPOLOGY OF THE CENTRAL MELANOCORTIN NEUROPEPTIDES IN THE ATLANTIC SALMON PARR BRAIN. 14th International Congress on the Biology of Fish; 2022-06-28 - 2022-07-01
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2021
9 Bolton, Charlotte M.; Bekaert, Michaël; Eilertsen, Mariann; Helvik, Jon Vidar; Migaud, Herve.
Rhythmic Clock Gene Expression in Atlantic Salmon Parr Brain. Frontiers in Physiology 2021 ;Volume 12.
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10 Eilertsen, Mariann; Clokie, Benjamin G.J.; Ebbesson, Lars; Tanase, Cristina; Migaud, Herve; Helvik, Jon Vidar.
Neural activation in photosensitive brain regions of Atlantic salmon (Salmo salar) after light stimulation. PLOS ONE 2021 ;Volume 16.(9) p. 1-17
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2020
11 Eilertsen, Mariann; Dolan, David William Peter; Bolton, Charlotte M.; Karlsen, Rita; Migaud, Herve; Helvik, Jon Vidar.
The effect of light environment on transcriptome and early development in Atlantic salmon. Digital HAVBRUK2020; 2020-06-09 - 2020-06-10
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12 Kryvi, Harald; Nordvik, Kari; Fjelldal, Per Gunnar; Eilertsen, Mariann; Helvik, Jon Vidar; Støren, Eivind Wilhelm Nagel; Long, John H..
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) 2020 p. -
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2019
13 Eilertsen, Mariann; Dolan, David William Peter; Bolton, Charlotte M.; Karlsen, Rita; Migaud, Herve; Helvik, Jon Vidar.
Genomic approach to identify nonvisual photoreceptors in Atlantic salmon and effects of light environment on early development. ICISB 2019; 2019-11-17 - 2019-11-20
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2018
14 Eilertsen, Mariann; Karlsen, Rita; Sveier, Harald; Helvik, Jon Vidar.
The effect of narrow banded LED light on development and growth performance. Havbrukskonferansen 2018; 2018-04-18 - 2018-04-20
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15 Eilertsen, Mariann; Valen, Ragnhild; Drivenes, Øyvind; Ebbesson, Lars O.E.; Helvik, Jon Vidar.
Transient photoreception in the hindbrain is permissive to the life history transition of hatching in Atlantic halibut. Developmental Biology 2018 ;Volume 444.(2) p. 129-138
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16 Valen, Ragnhild; Karlsen, Rita; Helvik, Jon Vidar.
Environmental, population and life-stage plasticity in the visual system of Atlantic cod. Journal of Experimental Biology 2018 ;Volume 221.(1) p. 1-13
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2017
17 Busserolles de, Fanny; Cortesi, Fabio; Helvik, Jon Vidar; Davies, Wayne I. L.; Templin, Rachel M.; Sullivan, Robert K. P.; Michell, Craig T.; Mountford, Jessica K.; Collin, Shaun P.; Irigoien, Xabier; Kaartvedt, Stein; Marshall, Justin.
Pushing the limits of photoreception in twilight conditions: The rod-like cone retina of the deep-sea pearlsides. Science Advances 2017 ;Volume 3.(11) p. 1-13
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2016
18 Eilertsen, Mariann; Helvik, Jon Vidar.
The effect of narrow banded LED light on development and growth performance. Havbrukskonferansen 2016; 2016-04-18 - 2016-04-20
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19 Valen, Ragnhild; Eilertsen, Mariann; Edvardsen, Rolf; Furmanek, Tomasz; Rønnestad, Ivar; van der Meeren, Terje; Karlsen, Ørjan; Nilsen, Tom Ole; Helvik, Jon Vidar.
The two-step development of a duplex retina involves distinct events of cone and rod neurogenesis and differentiation. Developmental Biology 2016 ;Volume 416.(2) p. 389-401
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20 Valen, Ragnhild.
Visual photoreception in Atlantic cod (Gadus morhua) – Genomic restrictions, neurogenesis and life history transformation. : University of Bergen 2016 (ISBN 978-82-308-3410-7)
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2015
21 Nilsen, Tom Ole; Lukas, Juliane; Valen, Ragnhild; Helvik, Jon Vidar; Ebbesson, Lars O.E.; Rønnestad, Ivar; Hamre, Kristin; Handeland, Sigurd O; Stefansson, Sigurd Olav.
Utvikling av osmoreguleringssystemet hos torskelarver startfôret på rotatorier eller naturlig zooplankton. Norsk Fiskeoppdrett 2015 ;Volume E1. p. 36-38
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2014
22 Eilertsen, Mariann; Drivenes, Øyvind; Edvardsen, Rolf; Bradley, Clarissa A.; Ebbesson, Lars O.E.; Helvik, Jon Vidar.
The exorhodopsin and melanopsin systems in the pineal complex and brain at early developmental stages of Atlantic halibut (Hippoglossus hippoglossus). Journal of Comparative Neurology 2014 ;Volume 522.(18) p. 4003-4022
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23 Gorissen, Marnix; Nilsen, Tom Ole; Bye-Ingebrigtsen, Einar; Handeland, Sigurd O.; Helvik, Jon Vidar; Stefansson, Sigurd Olav; Flik, Gert; Ebbesson, Lars O.E..
EXPLORING PHYSIOLOGICAL FUNCTIONS OF THE PLEIOTROPHIC MELANOCORTIN ALPHA-MSH IN ATLANTIC SALMON. International Congress on the Biology of Fish; 2014-08-03 - 2014-08-07
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24 Valen, Ragnhild; Edvardsen, Rolf; Søviknes, Anne Mette; Drivenes, Øyvind; Helvik, Jon Vidar.
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 2014 ;Volume 9:e0115436.(12)
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2013
25 Kamisaka, Yuko; Helvik, Jon Vidar; Tagawa, Masatomo; Tanaka, Masaru; Rønnestad, Ivar.
Evidence for an ontogenetic change from pre-programmed to meal-responsive cck production in Atlantic herring, Clupea harengus L. Comparative Biochemistry and Physiology A 2013 ;Volume 164.(1) p. 17-20
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2012
26 Sandbakken, Mari; Ebbesson, Lars O.E.; Stefansson, Sigurd Olav; Helvik, Jon Vidar.
Isolation and characterization of melanopsin photoreceptors of atlantic salmon (Salmo salar). Journal of Comparative Neurology 2012 ;Volume 520.(16) p. 3727-3744
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2011
27 Ebbesson, Lars O.E.; Nilsen, Tom Ole; Helvik, Jon Vidar; Tronci, Valentina; Stefansson, Sigurd Olav.
Corticotropin-Releasing Factor Neurogenesis during Midlife Development in Salmon: Genetic, Environmental and Thyroid Hormone Regulation. Journal of neuroendocrinology 2011 ;Volume 23.(8) p. 733-741
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2009
28 Helvik, Jon Vidar; Rødahl, Eyvind; Drivenes, Øyvind; Haarr, Lars.
Identification and Characterization of Two Zebrafish Nectin-1 Genes That Are Differentially Expressed in the Developing Eye and Brain. Developmental Dynamics 2009 ;Volume 238.(1) p. 43-55
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2008
29 Hoppmann, Verena; Wu, Jun J.; Søviknes, Anne Mette; Helvik, Jon Vidar; Becker, Thomas S..
Expression of the eight AMPA receptor subunit genes in the developing central nervous system and sensory organs of zebrafish. Developmental Dynamics 2008 ;Volume 237.(3) p. 788-799
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30 Karlsen, Marius; Nylund, Are; Watanabe, Kuninori; Helvik, Jon Vidar; Nylund, Stian; Plarre, Heidrun.
Characterization of 'Candidatus Clavochlamydia salmonicola': an intracellular bacterium infecting salmonid fish. Environmental Microbiology 2008 ;Volume 10.(1) p. 208-218
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31 Zhao, Xiaofeng; Fjose, Anders; Larsen, Natalia; Helvik, Jon Vidar; Drivenes, Øyvind.
Treatment with small interfering RNA affects the microRNA pathway and causes unspecific defects in zebrafish embryos. The FEBS Journal 2008 ;Volume 275. p. 2177-2184
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2007
32 Schander, Christoffer; Helvik, Jon Vidar; Lindblom, Louise; Høie, Eli Neshavn.
Biology Education at University of Bergen Part I. A Background Document. Bergen: Universitetet i Bergen/Institutt for Biologi 2007
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2005
33 Kamisaka, Y; Drivenes, Øyvind; Kurokawa, T; Tagawa, M; Rønnestad, Ivar; Tanaka, M; Helvik, Jon Vidar.
Cholecystokinin mRNA in Atlantic herring, Clupea harengus - molecular cloning, characterization, and distribution in the digestive tract during the early life stages. Peptides 2005 ;Volume 26.
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34 Skern, Rasmus.
Trypsin and trypsin-like peptidases from Lepeophtheirus salmonis. Functional implications from molecular studies. Universitetet i Bergen 2005 (ISBN 82-308-0058-8) 126 p.
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2004
35 Helvik, Jon Vidar; Ebbesson, Lars; Eilertsen, Marianne; Seo, Hee-Chan; Fjose, Anders; Drivenes, Øyvind.
Early expression of VA opsin in Atlantic halibut. Society for Neuroscience, 34th annual meeting; 2004-10-23 - 2004-10-27
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2003
36 ALLISON,, W. TED; DANN, STEPHEN G; Helvik, Jon Vidar; BRADLEY, CLARRISA; MOYER, HEATHER D; HAWRYSHYN, CRAIG W..
Ontogeny of Ultraviolet-Sensitive Cones in the Retina of Rainbow Trout (Oncorhynchus mykiss). Journal of Comparative Neurology 2003 ;Volume 461. p. 294-306
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37 Drivenes, Øyvind; Søviknes, Anne Mette; Ebbesson, Lars O. E.; Seo, Hee-Chan; Fjose, Anders; Helvik, Jon Vidar.
Isolation and characterization of two teleost melanopsin genes and their differential expression within the inner retina and brain. Journal of Comparative Neurology 2003 ;Volume 456.(1) p. 84-93
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38 Weltzien, Finn Arne; Nordberg, Birgitta; Helvik, Jon Vidar; Andersen, Øyvind; Swanson, Penny; Anderson, Eva.
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 2003 ;Volume 134.(2) p. 315-327
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39 Weltzien, Finn-Arne; Andersen, Øivind; Norberg, Birgitta; Helvik, Jon Vidar; Swanson, Penny; Andersson, Eva.
Identification and localization of eight distinct hormone-producing cell types in the pituitary of male Atlantic halibut (hippoglossus hippoglossus). Comparative Biochemistry and Physiology A 2003 ;Volume 134. p. 315-327
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2002
40 Drivenes, Øyvind; Søviknes, Anne Mette; Ebbesson, Lars O. E.; Helvik, Jon Vidar.
A dual non-visual photoreception system consisting of two melanopsins found in teleosts. 26th Annual Larval Fish Conference; 2002-07-22 - 2002-07-26
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41 Drivenes, Øyvind; Søviknes, Anne Mette; Ebbesson, Lars O. E.; Helvik, Jon Vidar.
Visual and non-visual reception in marine fish larvae. SEMINAR MARE; 2002-10-30 - 2002-10-31
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42 Helvik, Jon Vidar; Søviknes, Anne Mette; Drivenes, Øyvind.
The developing visual system and metamorphosis in flatfish. Programkonferanse HAVBRUK OG VILLAKS; 2002-09-16 - 2002-09-18
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43 Helvik, Jon Vidar; Søviknes, Anne Mette; Drivenes, Øyvind.
Topographic specialisation of photoreceptor cells within retina of marine fish larvae. 26th Annual Larval Fish Conference; 2002-07-22 - 2002-07-26
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44 Søviknes, Anne Mette; Drivenes, Øyvind; Wu, Jun J.; Becker, Thomas S.; Helvik, Jon Vidar.
Molecular cloning and characterisation of ultraviolet-sensitive opsin promoter from turbot. 26th Annual Larval Fish Conference; 2002-07-22 - 2002-07-26
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2001
45 Doldán Dans, María Jesús; Holmqvist, Bo; Prego Martinez, Benjamín; Helvik, Jon Vidar; de Miguel, Encarnación.
Differentiation of serotonergic circuits in the brain of the turbot (Psetta maxima). 3rd European Conference on Comparative Neurobiology: Modern views on brain homologies".; 2001-04-19 - 2001-04-21
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46 Drivenes, Øyvind; Søviknes, Anne Mette; Seo, Hee-Chan; Fjose, Anders; Helvik, Jon Vidar.
A novel nonvisual pigment gene cloned from teleost retina. 37th Annual contact meeting, Norwegian Society of Biochemistry; 2001-01-18 - 2001-01-21
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47 Helvik, Jon Vidar; Drivenes, Øyvind; Habroe, Torstein; Seo, Hee-Chan.
Topography of different photoreceptor cell types in the larval retina of Atlantic halibut (Hippoglossus hippoglossus). Journal of Experimental Biology 2001 ;Volume 204. p. 2553-2559
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48 Helvik, Jon Vidar; Drivenes, Øyvind; Næss, Tore; Fjose, Anders; Seo, Hee-Chan.
Molecular cloning and characterisation of five opsin genes from the marine flatfish Atlantic halibut (Hippoglossus hippoglossus). Visual Neuroscience 2001 ;Volume 18. p. 767-780
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1998
49 Folkvord, Arild; Blom, Geir; Helvik, Jon Vidar; Holmqvist, Bo I.; Johannessen, Arne; Otterlei, Erling; Stefansson, Sigurd; Brattegard, Torleiv.
Teori- og eksperimentbasert studie av rekruttering hos marin fisk. Sluttrapport for del I av Strategisk Program. : Inst. for fiskeri- og marinbiologi, Univ. i Bergen 1998 ;Volume 7.46 p. IFM rapport
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50 Karlsen, Ørjan; Skiftesvik, Anne Berit; Helvik, Jon Vidar.
The effect of light on activity and growth of Atlantic halibut, Hippoglossus hippoglossus L., yolk-sac larvae. Aquaculture Research 1998 ;Volume 29.(12) p. 899-912
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