Publications by authors named "Jon V Helvik"

Claim this Profile
T
Transcriptome analysis reveals effects of ethynylestradiol and bisphenol A on multiple endocrine and metabolic pathways in the pituitary and liver of female Atlantic cod ().
Fekadu Yadetie, Xiaokang Zhang, Anna Reboa, Gwenaëlle Samantha Chloe Noally, Mariann Eilertsen, Jon Vidar Helvik

Front Endocrinol (Lausanne)· May 2025

Social Media Activity not collected for this article yet.

Sign Up to Request Social Media Analysis
O
Onset of circadian rhythmicity in the brain of Atlantic salmon is linked to exogenous feeding.
Mariann Eilertsen, Sissel Norland, David W P Dolan, Rita Karlsen, Ana S Gomes, Jon Vidar Helvik

PLoS One· November 2024

Social Media Activity not collected for this article yet.

Sign Up to Request Social Media Analysis
L
Light conditions during Atlantic salmon embryogenesis affect key neuropeptides in the melanocortin system during transition from endogenous to exogenous feeding.
Sissel Norland, Ana S Gomes, Ivar Rønnestad, Jon Vidar Helvik, Mariann Eilertsen

Front Behav Neurosci· April 2023

Social Media Activity not collected for this article yet.

Sign Up to Request Social Media Analysis
M
Mapping the Pattern of Essential Neuroendocrine Cells Related to Puberty and VA Opsin Expression Provides Further Insight in the Photoreceptive Regulation of the Brain-Pituitary-Gonadal Axis in Atlantic Salmon (Salmo salar).
Christine Horne, Jon Vidar Helvik, Mitchell Stewart Fleming, Per Gunnar Fjelldal, Mariann Eilertsen

Brain Behav Evol· February 2023

Social Media Activity not collected for this article yet.

Sign Up to Request Social Media Analysis
M
Mapping key neuropeptides involved in the melanocortin system in Atlantic salmon (Salmo salar) brain.
Sissel Norland, Mariann Eilertsen, Ivar Rønnestad, Jon Vidar Helvik, Ana S Gomes

J Comp Neurol· January 2023

Social Media Activity not collected for this article yet.

Sign Up to Request Social Media Analysis
P
Photoreception and transcriptomic response to light during early development of a teleost with a life cycle tightly controlled by seasonal changes in photoperiod.
Mariann Eilertsen, David W P Dolan, Charlotte M Bolton, Rita Karlsen, Wayne I L Davies, Jon Vidar Helvik

PLoS Genet· December 2022

Social Media Activity not collected for this article yet.

Sign Up to Request Social Media Analysis
A
An EvoDevo Study of Salmonid Visual Opsin Dynamics and Photopigment Spectral Sensitivity.
Mariann Eilertsen, Wayne Iwan Lee Davies, Dharmeshkumar Patel, Jonathan E Barnes, Rita Karlsen, Jon Vidar Helvik

Front Neuroanat· July 2022

Social Media Activity not collected for this article yet.

Sign Up to Request Social Media Analysis
R
Rhythmic Clock Gene Expression in Atlantic Salmon Parr Brain.
Charlotte M Bolton, Michaël Bekaert, Mariann Eilertsen, Jon Vidar Helvik, Herve Migaud

Front Physiol· December 2021

Social Media Activity not collected for this article yet.

Sign Up to Request Social Media Analysis
N
Neural activation in photosensitive brain regions of Atlantic salmon (Salmo salar) after light stimulation.
Mariann Eilertsen, Benjamin G J Clokie, Lars O E Ebbesson, Cristina Tanase, Herve Migaud, Jon Vidar Helvik

PLoS One· November 2021

Social Media Activity not collected for this article yet.

Sign Up to Request Social Media Analysis
H
Heads and tails: The notochord develops differently in the cranium and caudal fin of Atlantic Salmon (Salmo salar, L.).
Harald Kryvi, Kari Nordvik, Per Gunnar Fjelldal, Mariann Eilertsen, Jon Vidar Helvik

Anat Rec (Hoboken)· August 2021

Social Media Activity not collected for this article yet.

Sign Up to Request Social Media Analysis
T
Transient photoreception in the hindbrain is permissive to the life history transition of hatching in Atlantic halibut.
Mariann Eilertsen, Ragnhild Valen, Øyvind Drivenes, Lars O E Ebbesson, Jon Vidar Helvik

Dev Biol· December 2018

Social Media Activity not collected for this article yet.

Sign Up to Request Social Media Analysis
E
Environmental, population and life-stage plasticity in the visual system of Atlantic cod.
Ragnhild Valen, Rita Karlsen, Jon Vidar Helvik

J Exp Biol· January 2018

Social Media Activity not collected for this article yet.

Sign Up to Request Social Media Analysis
P
Pushing the limits of photoreception in twilight conditions: The rod-like cone retina of the deep-sea pearlsides.
Fanny de Busserolles, Fabio Cortesi, Jon Vidar Helvik, Wayne I L Davies, Rachel M Templin

Sci Adv· November 2017

Social Media Activity not collected for this article yet.

Sign Up to Request Social Media Analysis
T
The two-step development of a duplex retina involves distinct events of cone and rod neurogenesis and differentiation.
Ragnhild Valen, Mariann Eilertsen, Rolf Brudvik Edvardsen, Tomasz Furmanek, Ivar Rønnestad, Jon Vidar Helvik

Dev Biol· August 2016

Social Media Activity not collected for this article yet.

Sign Up to Request Social Media Analysis
M
Molecular evidence that only two opsin subfamilies, the blue light- (SWS2) and green light-sensitive (RH2), drive color vision in Atlantic cod (Gadus morhua).
Ragnhild Valen, Rolf Brudvik Edvardsen, Anne Mette Søviknes, Øyvind Drivenes, Jon Vidar Helvik

PLoS One· September 2015

Social Media Activity not collected for this article yet.

Sign Up to Request Social Media Analysis
E
Exorhodopsin and melanopsin systems in the pineal complex and brain at early developmental stages of Atlantic halibut (Hippoglossus hippoglossus).
Mariann Eilertsen, Oyvind Drivenes, Rolf B Edvardsen, Clarrisa A Bradley, Lars O E Ebbesson, Jon Vidar Helvik

J Comp Neurol· December 2014

Social Media Activity not collected for this article yet.

Sign Up to Request Social Media Analysis
E
Evidence for an ontogenetic change from pre-programmed to meal-responsive cck production in Atlantic herring, Clupea harengus L.
Yuko Kamisaka, Jon Vidar Helvik, Masatomo Tagawa, Masaru Tanaka, Ivar Rønnestad

Comp Biochem Physiol A Mol Integr Physiol· January 2013

Social Media Activity not collected for this article yet.

Sign Up to Request Social Media Analysis
I
Isolation and characterization of melanopsin photoreceptors of Atlantic salmon (Salmo salar).
Mari Sandbakken, Lars Ebbesson, Sigurd Stefansson, Jon Vidar Helvik

J Comp Neurol· November 2012

Social Media Activity not collected for this article yet.

Sign Up to Request Social Media Analysis
I
Identification and characterization of two zebrafish nectin-1 genes that are differentially expressed in the developing eye and brain.
Jon Vidar Helvik, Eyvind Rødahl, Øyvind Drivenes, Lars Haarr

Dev Dyn· January 2009

Social Media Activity not collected for this article yet.

Sign Up to Request Social Media Analysis
T
Treatment with small interfering RNA affects the microRNA pathway and causes unspecific defects in zebrafish embryos.
Xiao-Feng Zhao, Anders Fjose, Natalia Larsen, Jon V Helvik, Øyvind Drivenes

FEBS J· May 2008

Social Media Activity not collected for this article yet.

Sign Up to Request Social Media Analysis
E
Expression of the eight AMPA receptor subunit genes in the developing central nervous system and sensory organs of zebrafish.
Verena Hoppmann, Jun J Wu, Anne Mette Søviknes, Jon Vidar Helvik, Thomas S Becker

Dev Dyn· March 2008

Social Media Activity not collected for this article yet.

Sign Up to Request Social Media Analysis
C
Characterization of 'Candidatus Clavochlamydia salmonicola': an intracellular bacterium infecting salmonid fish.
Marius Karlsen, Are Nylund, Kuninori Watanabe, Jon V Helvik, Stian Nylund

Environ Microbiol· January 2008

Social Media Activity not collected for this article yet.

Sign Up to Request Social Media Analysis
C
Cholecystokinin mRNA in Atlantic herring, Clupea harengus--molecular cloning, characterization, and distribution in the digestive tract during the early life stages.
Yuko Kamisaka, Oyvind Drivenes, Tadahide Kurokawa, Masatomo Tagawa, Ivar Rønnestad, Jon Vidar Helvik

Peptides· March 2005

Social Media Activity not collected for this article yet.

Sign Up to Request Social Media Analysis
O
Ontogeny of ultraviolet-sensitive cones in the retina of rainbow trout (Oncorhynchus mykiss).
W Ted Allison, Stephen G Dann, Jon Vidar Helvik, Clarrisa Bradley, Heather D Moyer

J Comp Neurol· June 2003

Social Media Activity not collected for this article yet.

Sign Up to Request Social Media Analysis
I
Identification and localization of eight distinct hormone-producing cell types in the pituitary of male Atlantic halibut (Hippoglossus hippoglossus L.).
Finn Arne Weltzien, Birgitta Norberg, Jon Vidar Helvik, Øivind Andersen, Penny Swanson

Comp Biochem Physiol A Mol Integr Physiol· February 2003

Social Media Activity not collected for this article yet.

Sign Up to Request Social Media Analysis