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Kaja Skjærven

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Researcher
Telephone: 97142241
Department: Fôr og ernæring

Curriculum Vitae

Kaja Helvik Skjærven har interesse og kompetanse relatert til tidlig embryoutvikling hos fisk og hvordan utvikling påvirkes av miljøforhold som klima (temperatur), ernæringeller giftstoffer. Kjernefokuset er hvordan de forskjellige miljøforholdene endrer næringstoffstatus og hvordan dette endrer potensialet for genuttrykk gjennom epigenetiske mekanismer. Hovedtemaet for arbeidet er hvordan næringsstoffer, temperatur eller giftstoffer regulerer DNA-metylering (epigenetikk) fra en generasjon og over til neste generasjon. Vi forbinder endringene i genuttrykkpotensialet (epigenetikk) med mer tradisjonelle biologiske prosesser som næringsstoffstatus, metabolisme, fysiologi og histologianalyser (også elektronmikroskopi). 
For noen år siden ønsket vi å teste om foreldrenes vitaminstatus (stamfisk/ broodstock) kunne påvirke neste generasjon. Vi lagde et fôr med lavere vitaminnivå (mikronæringsstoffene: B-vitamin og metionin) og gav det til stamfisk av sebrafisk. Det senket fekunditeten, men eggene som ble gytt var uten misdannelser. Likevel viste RNA sekvensering at embryostadiet var påvirket av foreldrenes vitaminstatus (Skjærven et al., 2016, Sci Rep 6, 34535 (2016)). I neste generasjon fikk begge gruppene kontrollfôret med nok B-vitaminer. Fiskebarna spiste og vokste helt lik, men leveren til barna fra gruppen hvor foreldrene hadde fått mindre B-vitaminer var tydelig endret. Leverfargen var lyserosa og histologiske analyser viste signifikant mer fett i levercellene, samt nedregulerte gener i fettmetabolismen. Dette er ernæringsbasert programmering og resultatene viste at DNA metylering var en av mekanismene som styrte utviklingen av denne fenotypen (Skjærven et al,.2018, Sci Rep 8, 3055 (2018)). Siden har vi vist at det å endre bare ett næringsstoff i fôret til foreldrene også har stor innflytelse på hvilke gener som blir uttrykt og dermed påvirke barnas metabolisme (Adam et al., 2019), at selv små justeringer av vitaminer i fôret kan påvirke lipidomsetningen (Saito et al., 2020, 2024) samt en rekke publikasjoner på stamfiskhåndtering og effekter på neste generasjon (Skjærven et al., 2020, 2022, Saito 2024), fra prosjektene NutrEpi og EpiFishGrowth (NFR). Sjekk ut vår siste publikasjoner, spesielt den i  Epigenetics, BMC Genomics, vårt bok kapittel om Nutritional Epigenetics eller hvordan epigenetikk bidrar til evolusjoen som er publisert i Nature Communication. Eller hvordan maternal mRNA justeres som en konsekven av klimaendringer (ICES journal: Skjærven et al., 2024).

Nøkkelkvalifikasjoner: 
Havforskning, biologi, akvakultur, klimaendringer, arters tilpassning, temperaturregulering, marinbiologi, zoologi, miljøfysiologi, klima, effekter over generasjoner.
Utviklingsbiologi: fiskeegg, reproduksjon, stamfisk
Ernæring, aminosyrer, proteiner, B-vitaminer: tiamin (B1), riboflavin (B2), niacin (B3), pantotensyre (B5), pyridoksin (B6), biotin (B7), folat (B9), cobalamin (B12) Molekyærbiologi: epigenetikk, gen-miljø interraskjoner, DNA metylering, 
Arter: Laks, ørret, torsk, rødspette, sebrafisk, cyanobakterier, primærcellekulturer og cellelinjer (fisk/mus/msk)
Histologi, lys og elektronmikroskopi (TEM og SEM)
Prosjektleder 
 

Se link til publikasjoner: 
https://scholar.google.com/citations?user=BsCYbzAAAAAJ&hl=no

Publications

Academic articles

2024

Ocean warming shapes embryonic developmental prospects of the next generation in Atlantic cod

Kaja Helvik Skjærven, Maud Alix, Lene Kleppe, Jorge Manuel de Oliveira Fernandes, Paul Whatmore, Artem Nedoluzhko, Eva Andersson, Olav Sigurd Kjesbu
ICES Journal of Marine Science 81 p. 733-747
2024

One-carbon metabolism nutrients impact the interplay between DNA methylation and gene expression in liver, enhancing protein synthesis in Atlantic salmon

Takaya Saito, Marit Espe, Vibeke Vikeså, Christoph Bock, Tårn H. Thomsen, Anne-Catrin Adam, Jorge Manuel de Oliveira Fernandes, Kaja Helvik Skjærven
Epigenetics 19
2024

Spawning manipulation, broodfish diet feeding and egg production in farmed Atlantic salmon

Per Gunnar Fjelldal, Anne-Catrin Adam, Gerd Marit Berge, Ingrid Lein, Ernst Morten Hevrøy, Ingun Næve, Rudi R. Seim, Maren Mommens, Kaja Helvik Skjærven, Tom Johnny Hansen, Kristin Hamre
Aquaculture 580
2023

Risk assessment of Aquaterra® oil for its intended use as ingredient in fish feed. Scientific Opinion of the Norwegian Scientific Committee for Food and Environment

Tage Thorstensen, Johanna Eva Bodin, Nur Duale, Johan Johansen, Volha Shapaval, Øystein Sæle, Anne-Marthe Ganes Jevnaker, Ville Erling Sipinen, Kristian Prydz, Kaja Helvik Skjærven
VKM Report p. 1-58
2023

Methionine: An Indispensable Amino Acid in Cellular Metabolism and Health of Atlantic Salmon

Marit Espe, Anne-Catrin Adam, Takaya Saito, Kaja Helvik Skjærven
Aquaculture Nutrition 2023
2023

Risk assessment of Aquaterra® oil for its intended use as ingredient in fish feed. Scientific Opinion of the Norwegian Scientific Committee for Food and Environment

Tage Thorstensen, Johanna Eva Bodin, Nur Duale, Anne-Marthe Ganes Jevnaker, Johan Johansen, Ville Erling Sipinen, Volha Shapaval, Øystein Sæle, Kristian Prydz, Kaja Helvik Skjærven
VKM Report 2023 p. 1-58
2023

Risk assessment of Aquaterra® oil for its intended use as ingredient in fish feed

Tage Thorstensen, Johanna Eva Bodin, Nur Duale, Anne-Marthe Ganes Jevnaker, Johan Johansen, Ville Erling Sipinen, Volha Shapaval, Øystein Sæle, Kristian Prydz, Kaja Helvik Skjærven
VKM Report 8 p. 1-58
2023

Comparative analysis of genome-scale, base-resolution DNA methylation profiles across 580 animal species

Johanna Klughammer, Daria Romanovskaia, Amelie Nemc, Annika Posautz, Charlotte A. Seid, Linda C. Schuster, Melissa C. Keinath, Juan Sebastian Lugo Ramos, Lindsay Kosack, Ann Evankow, Dieter Printz, Stefanie Kirchberger, Bekir Ergüner, Paul Datlinger, Nikolaus Fortelny, Christian Schmidl, Matthias Farlik, Kaja Helvik Skjærven, Andreas Bergthaler, Miriam Liedvogel, Denise Thaller, Pamela A. Burger, Marcela Hermann, Martin Distel, Daniel L. Distel, Anna Kübber-Heiss, Christoph Bock
Nature Communications 14
2023

Risk assessment of Aquaterra® oil for its intended use as ingredient in fish feed

Tage Thorstensen, Johanna Eva Bodin, Nur Duale, Anne-Marthe Ganes Jevnaker, Johan Johansen, Ville Erling Sipinen, Volha Shapaval, Sæle Øystein, Kristian Prydz, Kaja Helvik Skjærven
VKM Report 8 p. 1-58
2022

Long-term effect of parental selenium supplementation on the one-carbon metabolism in rainbow trout (Oncorhynchus mykiss) fry exposed to hypoxic stress

Pauline Wischhusen, Cécile Heraud, Kaja Helvik Skjærven, Sadasivam J. Kaushik, Benoit Fauconneau, P. Antony Jesu Prabhu, Stéphanie Fontagné-Dicharry
British Journal of Nutrition 127 p. 23-34
2022

Dietary electrolyte balance of Atlantic salmon (Salmo salar) freshwater feeds: Impact on osmoregulation, mineral metabolism and performance in seawater

P. Antony Jesu Prabhu, Per Gunnar Fjelldal, Sofie C. Remø, Chandrasekar Selvam, Kristin Hamre, Marit Espe, Elisabeth Holen, Kaja Helvik Skjærven, Vibeke Vikså, Saravanan Subramanian, Johan W. Schrama, Nini Sissener
Aquaculture 546
2022

Tailoring freshwater diets towards boosted immunity and pancreas disease infection robustness in Atlantic salmon post smolts

Elisabeth Holen, M Chen, Per Gunnar Fjelldal, Kaja Helvik Skjærven, Nini Sissener, Sofie C. Remø, P. Antony Jesu Prabhu, Kristin Hamre, Vibeke Vikeså, S. Subramanian, Marit Espe
Fish and Shellfish Immunology 120 p. 377-391
2022

Micronutrient supplementation affects DNA methylation in male gonads with potential intergenerational epigenetic inheritance involving the embryonic development through glutamate receptor-associated genes

Takaya Saito, Paul Whatmore, John F. Taylor, Jorge Manuel de Oliveira Fernandes, Anne-Catrin Adam, Douglas R. Tocher, Marit Espe, Kaja Helvik Skjærven
BMC Genomics 23
2022

Dietary plant oil supplemented with arachidonic acid and eicosapentaenoic acid affects the fatty acid composition and eicosanoid metabolism of Atlantic salmon (Salmo salar L.) during smoltification

L. Miao, Sofie C. Remø, Marit Espe, P. Antony Jesu Prabhu, Kristin Hamre, Per Gunnar Fjelldal, Kaja Helvik Skjærven, Elisabeth Holen, Vibeke Vikeså, Nini Sissener
Fish and Shellfish Immunology 123 p. 194-206
2022

Earlier or delayed seasonal broodstock spawning changes nutritional status and metabolic programming of growth for next-generation Atlantic salmon

Kaja Helvik Skjærven, Maren Mommens, Anne-Catrin Adam, Takaya Saito, Eystein Oveland, Marit Espe
Aquaculture 554 p. 1-14
2021

The first mitochondrial 5-methylcytosine map in a non-model teleost (Oreochromis niloticus) reveals extensive strand-specific and non-CpG methylation

Artem Nedoluzhko, Robin Mjelle, Maria Renström, Kaja Helvik Skjærven, Francesc Piferrer, Jorge Manuel de Oliveira Fernandes
Genomics 113 p. 3050-3057
2021

The first mitochondrial 5-methylcytosine map in a non-model teleost (Oreochromis niloticus) reveals extensive strand-specific and non-CpG methylation

Artem Nedoluzhko, Robin Mjelle, Maria Renström, Kaja H. Skjærven, Francesc Piferrer, Jorge Manuel de Oliveira Fernandes
Genomics 113 p. 3050-3057
2021

Can improved nutrition for Atlantic salmon in freshwater increase fish robustness, survival and growth after seawater transfer?

Nini Sissener, Kristin Hamre, Per Gunnar Fjelldal, P. Antony Jesu Philip, Marit Espe, L. Miao, Erik Höglund, Christina Sørensen, Kaja Skjærven, Elisabeth Holen, S. Subramanian, V. Vikeså, Birgitta Norberg, Sofie Remø
Aquaculture 542
2021

Metabolic and molecular signatures of improved growth in Atlantic salmon (Salmo salar) fed surplus levels of methionine, folic acid, vitamin B6 and B12 throughout smoltification.

Anne-Catrin Adam, Takaya Saito, Marit Espe, Paul Whatmore, Jorge Manuel de Oliveira Fernandes, Vibeke Vikeså, Kaja Helvik Skjærven
British Journal of Nutrition
2020

Out-of-season spawning affects the nutritional status and gene expression in both Atlantic salmon female broodstock and their offspring

Kaja Helvik Skjærven, Eystein Oveland, Maren Mommens, Elisa Samori, Takaya Saito, Anne-Catrin Adam, Marit Espe
Comparative Biochemistry and Physiology A 247
2020

Micronutrient supplementation affects transcriptional and epigenetic regulation of lipid metabolism in a dose-dependent manner

Takaya Saito, Paul Whatmore, John F. Taylor, Jorge Manuel de Oliveira Fernandes, Anne-Catrin Adam, Douglas R. Tocher, Marit Espe, Kaja Helvik Skjærven
Epigenetics
2020

Higher dietary micronutrients are required to maintain optimal performance of Atlantic salmon (Salmo salar) fed a high plant material diet during the full production cycle

Luisa M. Vera, Kristin Hamre, Marit Espe, Gro Ingunn Hemre, Kaja Helvik Skjærven, Erik-Jan Lock, P. Antony Jesu Prabhu, Daniel Leeming, Herve Migaud, Douglas R. Tocher, John F. Taylor
Aquaculture 528
2020

The level of 1C diets fed prior to cell isolation affect lipid metabolism in primary liver cells isolated from Atlantic salmon

Marit Espe, Kaja Helvik Skjærven, Ming Chen, Vibeke Vikeså, Anne-Catrin Adam, Takaya Saito, Elisabeth Holen
Aquaculture Nutrition 26 p. p. 1019-1025
2020

Higher dietary micronutrients are required to maintain optimal performance of Atlantic salmon (Salmo salar) fed a high plant material diet during the full production cycle.

Luisa M.Vera, Kristin Hamre, Marit Espe, Gro-Ingunn Hemre, Kaja Skjærven, Erik-Jan Lock, Antony J Prabhu, Daniel Leeming, Herve Migaud, Douglas R. Tocher, John F. Taylor
Aquaculture 528
2020

Out-of-season spawning affects the nutritional status and gene expression in both Atlantic salmon female broodstock and their offspring

Kaja H Skjærven, Eystein Oveland, Maren Mommens, Elisa Samori, Takaya Saito, Anne-Catrin Adam, Marit Espe
Comp Biochem Physiol A Mol Integr Physiol 247
2020

Micronutrient supplementation affects transcriptional and epigenetic regulation of lipid metabolism in a dose-dependent manner.

Takaya Saito, Paul Whatmore, John F. Taylor, Jorge M.O. Fernandes, Anne-Catrin Adam, Douglas R. Tocher, Marit Espe & Kaja H. Skjærven
Epigenetics
2020

The level of 1C diets fed prior to cell isolation affects lipid metabolism in primary liver cells isolated from Atlantic salmon (Salmo salar)

Marit Espe, Kaja Helvik Skjærven, Ming Chen, Vibeke Vikeså, Anne-Catrin Adam, Takaya Saito, Elisabeth Holen
Aquaculture Nutrition 26 p. 1019-1025
2020

Parental selenium nutrition affects the one-carbon metabolism and the hepatic dna methylation pattern of rainbow trout (Oncorhynchus mykiss) in the progeny

Pauline Wischhusen, Takaya Saito, Cécile Heraud, Sadasivam J. Kaushik, Benoit Fauconneau, P. Antony Jesu Prabhu, Stéphanie Fontagné-Dicharry, Kaja Helvik Skjærven
Life 10 p. 1-25
2019

The effect of micronutrient supplementation on growth and hepatic metabolism in diploid and triploid Atlantic salmon (Salmo salar) parr fed a low marine ingredient diet.

John F. Taylor, L.M. Vera, Christian De Santis, Erik-Jan Lock, Marit Espe, Kaja Helvik Skjærven, DJ Leeming, J del Pozo, J Mota-Velasco, Hervé Migaud, Kristin Hamre, Douglas R. Tocher
Comparative Biochemistry and Physiology, Part B 227 p. 106-121
2019

Atlantic salmon fed a nutrient package of surplus methionine, vitamin B12, folic acid and vitamin B6 improved growth and reduced the relative liver size, but when in excess growth reduced

Marit Espe, Vibeke Vikeså, Tårn Helgøy Thomsen, Anne-Catrin Adam, Takaya Saito, Kaja Helvik Skjærven
Aquaculture Nutrition p. 1-13
2019

Profiling DNA methylation patterns of zebrafish liver associated with parental high dietary arachidonic acid.

Anne-Catrin Adam, Kai Kristoffer Lie, Paul Whatmore, Lars Martin Jakt, Mari Moren, Kaja Helvik Skjærven
PLOS ONE 14
2019

Associations Between Behavioral Effects of Bisphenol A and DNA Methylation in Zebrafish Embryos

Pål A Olsvik, Paul Whatmore, Sam J Penglase, Kaja H Skjærven, Marc Anglès d'Auriac, Ståle Ellingsen
Frontiers in Genetics 10
2019

The effect of micronutrient supplementation on growth and hepatic metabolism in diploid and triploid Atlantic salmon (Salmo salar) parr fed a low marine ingredient diet

John F. Taylor, L.M. Vera, Christian De Santis, Erik-Jan Lock, Marit Espe, Kaja Helvik Skjærven, DJ Leeming, J del Pozo, J Mota-Velasco, Hervé Migaud, Kristin Hamre, Douglas R. Tocher
227 p. 106-121
2018

Parental high dietary arachidonic acid levels modulated the hepatic transcriptome of adult zebrafish (Danio rerio) progeny

Anne-Catrin Adam, Kaja Helvik Skjærven, Paul Whatmore, Mari Moren, Kai Kristoffer Lie
PLOS ONE 13
2018

Parental micronutrient deficiency distorts liver DNA methylation and expression of lipid genes associated with a fatty-liver-like phenotype in offspring

Kaja Helvik Skjærven, Lars Martin Jakt, Jorge Manuel de Oliveira Fernandes, John Arne Dahl, Anne-Catrin Adam, Johanna Klughammer, Christoph Bock, Marit Espe
Scientific Reports 8
2018

Dietary taurine supplementation in plant protein based diets do not affect growth and reproductive performance of zebrafish

Igo Gomes Guimarães, Kaja Helvik Skjærven, Mari Moren, Marit Espe, Kristin Hamre
Aquaculture Research 49 p. 2013-2022
2017

High dietary arachidonic acid levels induce changes in complex lipids and immune-related eicosanoids and increase levels of oxidised metabolites in zebrafish (Danio rerio)

Anne-Catrin Adam, Kai Kristoffer Lie, Mari Moren, Kaja Helvik Skjærven
British Journal of Nutrition 117 p. 1075-1085
2017

Metabolic signatures of bisphenol A and genistein in Atlantic salmon liver cells

Pål Asgeir Olsvik, Kaja Helvik Skjærven, Liv Ingeborg Rosvoll Søfteland
Chemosphere 189 p. 730-743
2017

Early nutritional programming affects liver transcriptome in diploid and triploid Atlantic salmon, Salmo salar

LM Vera, C Metochis, John F. Taylor, Michael Clarkson, Kaja Helvik Skjærven, Hervé Migaud, Douglas R. Tocher
BMC Genomics 18 p. 1-15
2016

Parental vitamin deficiency affects the embryonic gene expression of immune-, lipid transport-and apolipoprotein genes

Kaja Helvik Skjærven, Lars Martin Jakt, John Arne Dahl, Marit Espe, Håvard Aanes, Kristin Hamre, Jorge Fernandes
Scientific Reports 6
2015

Impact of dietary selenium on methylmercury toxicity in juvenile Atlantic cod: A transcriptional survey

Pål Asgeir Olsvik, Heidi Amlund, Øystein Sæle, Ståle Ellingsen, Kaja Helvik Skjærven
Chemosphere 120 p. 199-205
2014

Thermal stress alters expression of genes involved in one carbon and DNA methylation pathways in Atlantic cod embryos

Kaja Helvik Skjærven, Kristin Hamre, Samuel Penglase, Roderick Nigel Finn, Pål Asgeir Olsvik
Comparative Biochemistry and Physiology A 173 p. 17-27
2014

Impacts of TCDD and MeHg on DNA methylation in zebrafish (Danio rerio) across two generations

Pål Asgeir Olsvik, Timothy Williams, Hai-Shan Tung, Leda Mirbahai, Monica Sanden, Kaja Helvik Skjærven, Ståle Ellingsen
165 p. 17-27
2014

Ontogeny of redox regulation in Atlantic cod (Gadus morhua) larvae

Kristin Hamre, Samuel Penglase, Josef Daniel Rasinger, Kaja Helvik Skjærven, Pål Asgeir Olsvik
73 p. 337-348
2013

Redox regulation in Atlantic cod (Gadus morhua) embryos developing under normal and heat-stressed conditions

Kaja Helvik Skjærven, Samuel Penglase, Pål Asgeir Olsvik, Kristin Hamre
57 p. 29-38
2011

The apoptosis-inducing activity towards leukemia and lymphoma cells in a cyanobacterial culture collection is not associated with mouse bioassay toxicity

Linn Silje Wathne Oftedal, Kaja Helvik Skjærven, Rosie Theresa Coyne, Bente Edvardsen, Thomas Rohrlack, Olav Skulberg, Stein Ove Doskeland, Lars Herfindal
38 p. 489-501
2011

Ontogenetic expression of maternal and zygotic genes in Atlantic cod embryos under ambient and thermally stressed conditions

Kaja Helvik Skjærven, Pål Asgeir Olsvik, Roderick Nigel Finn, Elisabeth Holen, Kristin Hamre
Comparative Biochemistry and Physiology A 159 p. 196-205
2010

Embryonic stem cells isolated from Atlantic cod (Gadus morhua) and the developmental expression of a stage-specific transcription factor ac-Pou2

Elisabeth Holen, Anette Kausland, Kaja Helvik Skjærven
36 p. 1029-1039
2009

Marine Benthic Diatoms Contain Compounds Able to Induce Leukemia Cell Death and Modulate Blood Platelet Activity

Siv Kristin Prestegard, Linn Silje Wathne Oftedal, Rosie Theresa Coyne, Gyrid Nygård, Kaja Helvik Skjærven, Gjert Knutsen, Stein Ove Doskeland, Lars Herfindal
Marine Drugs 7 p. 605-623
2008

Antimicrobial and cytotoxic assessment of marine cyanobacteria - Synechocystis and synechococcus

Rosário F. Martins, Miguel F. Ramos, Lars Herfindal, José A. Sousa, Kaja Helvik Skjærven, Vitor M. Vasconcelos
Marine Drugs 6 p. 1-11

Other journal contributions

2020

Corrigendum: Associations Between Behavioral Effects of Bisphenol A and DNA Methylation in Zebrafish Embryos (Frontiers in Genetics, (2019), 10, 10.3389/fgene.2019.00184)

Pål Asgeir Olsvik, Paul Whatmore, Samuel Penglase, Kaja Helvik Skjærven, Marc Anglès d’Auriac, Ståle Ellingsen
Frontiers in Genetics 11
2012

Kysttorsken vår er sterkt truet

Skjærven, Kaja Helvik
Bergens Tidende

Scientific lectures

2024

VITAMIN E REQUIREMENT IN ATLANTIC SALMON Salmo salar DURING SMOLTIFICATION AND ENVIRONMENTAL CHALLENGE

Pauline Wischhusen, Kristin Hamre, Antony Jesu Prabhu Philip, Anne-Catrin Adam, Kaja Helvik Skjærven, Sofie c Remø, Ingunn Stubhaug, Nini Hedberg Sissener
2022

Seasonal broodstock management influences the nutritional status, gene expression and epigenetic gene regulation in Atlantic salmon progeny

Kaja Helvik Skjærven, Takaya Saito, Jorge Manuel de Oliveira Fernandes, Maren Mommens, Anne-Catrin Adam, Marit Espe
2022

Nutrient-sensitive epigenetic regulation in salmon muscle

Anne-Catrin Adam, Takaya Saito, A.L.K. Putman, Paul Whatmore, Marit Espe, Jorge Manuel de Oliveira Fernandes, Eric A. Miska, Kaja Helvik Skjærven
2022

1-carbon nutrients impact histone modification enrichment in the Atlantic salmon genome

A.L.K. Putman, Anne-Catrin Adam, Takaya Saito, Marit Espe, Kaja Helvik Skjærven, Eric A. Miska
2022

Atlantic cod facing climate-driven warming: Reproductive physiology under challenging environmental conditions

A. Maud, Lene Kleppe, Eva Andersson, Birgitta Norberg, Ørjan Karlsen, Paul Whatmore, Jorge Manuel de Oliveira Fernandes, Artem Nedoluzhko, Kaja Helvik Skjærven, Jon Egil Skjæraasen, Olav Sigurd Kjesbu
2021

The mitochondrial 5-methylcytosine profile in Nile tilapia (Oreochromis niloticus)

Artem Nedoluzhko, Robin Mjelle, Maria Renström, Kaja Helvik Skjærven, Francesc Piferrer, Jorge Manuel de Oliveira Fernandes
2021

Epigenetic mechanism of improved post-smolt growth in Atlantic salmon fed a moderate surplus package of methionine, folic acid, vitamin B6 and B12 throughout smoltification

Kaja Helvik Skjærven, Anne-Catrin Adam, Takaya Saito, Paul Whatmore, A.L.K. Putman, Jorge Manuel de Oliveira Fernandes, Vibeke Vikeså, Marit Espe
2021

Surplus methionine, cobalamin, folate and pyridoxine improved growth and lipid metabolism in Atlantic salmon

Marit Espe, Elisabeth Holen, Anne-Catrin Adam, Takaya Saito, Kaja Helvik Skjærven
2021

Seasonal broodstock management alters the epigenome of the next generation of Atlantic salmon (Salmo salar)

Kaja Helvik Skjærven, Takaya Saito, Jorge Manuel de Oliveira Fernandes, Paul Whatmore, Pedro Araujo, Maren Mommens, Marit Espe
2021

Seasonal broodstock management influences the nutritional status, gene expression and epigenetic gene regulation in Atlantic salmon progeny

Kaja Helvik Skjærven, Takaya Saito, Jorge Manuel de Oliveira Fernandes, Maren Mommens, Paul Whatmore, Anne-Catrin Adam, Marit Espe
2021

Påvirker endret gytetidspunkt neste generasjon?

Kaja Helvik Skjærven, Takaya Saito, Maren Mommens, Eystein Oveland, Anne-Catrin Adam, Marit Espe
2020

Moderat overskudd av mikronæringsstoff i laksefôr gir økt vekst og endrer ernæringssensitive epigenetiske reguleringsmekanismer i muskel til atlantisk laks

Anne-Catrin Adam, Marit Espe, Takaya Saito, Paul Whatmore, Jorge Manuel de Oliveira Fernandes, Kaja Helvik Skjærven
2019

The metabolic footprint of a surplus of dietary micronutrients on salmon muscle – stories from pre- and post-smolts

Anne-Catrin Adam, Marit Espe, Takaya Saito, Paul Whatmore, Kaja Helvik Skjærven
2019

Epigenetic effects of dietary micronutrients in Atlantic salmon (Salmo salar) muscle

Anne-Catrin Adam, Marit Espe, Takaya Saito, Paul Whatmore, Jorge Manuel de Oliveira Fernandes, Kaja Helvik Skjærven
2019

Nutrient-responsive epigenetic programming in Atlantic salmon and zebrafish

Anne-Catrin Adam, Paul Whatmore, Takaya Saito, Marit Espe, Jorge Manuel de Oliveira Fernandes, Luisa M.P. Valente, Kaja Helvik Skjærven
2018

The mitochondrial epigenome of Nile tilapia(Oreochromis niloticus)

Maria Renström, Tomasz Krzysztof Podgorniak, Paul Whatmore, Francesc Piferrer, Steinar Daae Johansen, Kaja Helvik Skjærven, Jorge Manuel de Oliveira Fernandes
2018

Bisfenol A påvirker adferd, genekspresjon og DNA metylering i sebrafisk embryo.

Pål Asgeir Olsvik, Samuel Penglase, Kaja Helvik Skjærven, Marc Angles d'Auriac, Ståle Ellingsen
2018

Profiling DNA methylation patterns of zebrafish liver associated with parental high dietary arachidonic

Anne-Catrin Adam, Kai Kristoffer Lie, Paul Whatmore, Lars Martin Jakt, Mari Moren, Kaja Helvik Skjærven
2018

Nivået av arakidonsyre påvirker genuttrykket og DNA metylering i neste generasjon

Anne-Catrin Adam, Kai Kristoffer Lie, Paul Whatmore, Lars Martin Jakt, Mari Moren, Kaja Helvik Skjærven
2018

Behavioral, transcriptional and whole-genome DNA methylation effects of bisphenol A in zebrafish embryos

Kaja Helvik Skjærven, Paul Whatmore, Samuel Penglase, Marc Angles d'Auriac, Ståle Ellingsen, Pål Asgeir Olsvik
2018

Epigenetic and transcriptional effects of optimizing 1-C nutrients in plant based feeds for Atlantic salmon

Kaja Helvik Skjærven, Jorge Manuel de Oliveira Fernandes, John Arne Dahl, Kristin Hamre, Lars Martin Jakt
2018

Epigenetiske effekter av fiskefôr

Kaja Helvik Skjærven, Lars Martin Jakt, Marit Espe
2018

Effect of dietary inorganic and organic selenium supplementation on reproduction and egg quality in rainbow trout (Oncorhynchus mykiss)

P. Wischhusen, M. Briens, P-A. Geraert, M. Parailloux, B. Bouyssiere, M Bueno, S. Monicou, J. Prahbu, Kaja Helvik Skjærven, B. Fauconneau, Stéphanie Fontagné-Dicharry
2017

Investigating the effect of high dietary arachidonic acid in zebrafish (Danio rerio) using high-throughput technologies

Anne-Catrin Adam, Kai Kristoffer Lie, Mari Moren, Kaja Helvik Skjærven
2016

High arachidonic acid level in the feed for zebrafish changes the metabolism and DNA methylation in both parents and offspring

Anne-Catrin Adam, Kai Kristoffer Lie, Lars Martin Jakt, Mari Moren, Kaja Helvik Skjærven
2015

Changes in metabolic pathways and DNA methylation patterns in zebrafish fed high arachidonic acid levels

Anne-Catrin Adam, Kai Kristoffer Lie, Lars Martin Jakt, Mari Moren, Kaja Helvik Skjærven
2013

Ontogeny of the redox balance in relation to organogenesis in Atlantic cod (Gadus morhua) larvae

Kristin Hamre, Samuel Penglase, Josef Daniel Rasinger, Kaja Helvik Skjærven, Pål Asgeir Olsvik

Poster

2022

Mitochondrial DNA Methylation Profiling in Nile Tilapia (Oreochromis niloticus) through Nanopore Sequencing

Partha Sarathi Tripathy, Artem Nedoluzhko, Kaja Helvik Skjærven, Francesc Piferrer, Jorge Manuel de Oliveira Fernandes
2021

The landscape of two major histone modifications in Atlantic salmon (Salmo Salar) fed a surplus of methionine and B vitamins

A.L.K. Putman, Anne-Catrin Adam, Takaya Saito, Marit Espe, Kaja Helvik Skjærven, Eric A. Miska
2018

Salmon Production and Quantification of Folates using AOAC Trienzyme UHPLC-MS/MS Method

Eystein Overland, Rikard Hageskal, Elsa Samori, Nina Wollertsen, Maren Mommens, Rune Waagbø, Kaja Helvik Skjærven
2016

Behavioral and transcriptional effects of bisphenol A in zebrafish embryos

Pål Asgeir Olsvik, Paul Whatmore, Samuel Penglase, Kaja Helvik Skjærven, Marc Angles d'Auriac, Ståle Ellingsen
2015

Dietary high arachidonic acid level affects the DNA methylation pattern in zebrafish

Anne-Catrin Adam, Kai Kristoffer Lie, Lars Martin Jakt, Mari Moren, Kaja Helvik Skjærven
2015

Insufficient Methionine and B-vitamin Levels in Zebrafish Feed Increases the Liver Lipid Accumulation and Affects Redox Regulation and One Carbon Metabolism in the Next Generation.

Kaja Helvik Skjærven, Jorge Fernandes, Christoph Bock, Johanna Hadler, Håvard Aanes, Kai Kristoffer Lie, Kristin Hamre, John Arne Dahl
2014

Insufficient B-vitamin levels in the feed for zebrafish increases the lipid accumulation in the liver of the next generation.

Kaja Helvik Skjærven, Håvard Aanes, Kai Kristoffer Lie, Kristin Hamre, John Arne Dahl

Reports and dissertations

2023

Program for overvåking av fiskefôr - Årsrapport for prøver innsamlet i 2022

Veronika Sele, Marta Sofia Silva, P. Antony Jesu Prabhu, Kristin Hamre, Kaja Helvik Skjærven, Marit Espe, Nina Sylvia Liland, Kai Kristoffer Lie, Marc HG Berntssen, Anne-Katrine Lundebye
Rapport fra havforskningen
2018

Investigating the metabolic, transcriptomic and DNA methylation signatures of high dietary arachidonic acid in zebrafish. Epigenetic and transcriptional effects in the next generation

Anne-Catrin Adam, Kai Kristoffer Lie, Kaja Helvik Skjærven, Rune Waagbø
2012

Effects of thermal stress on the expression of maternal and zygotic genes in Atlantic cod (Gadus morhua) embryos

Skjærven, Kaja Helvik
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