Lill Heidi Johansen

I am employed as a researcher in the field of Production Biology. My areas of work are projects and assignments within fish health, welfare and biosecurity and I study the effects of different production conditions on the fish. I have a Cand. scient degree with some additional subjects from the University of Tromsø. I have worked as a researcher in aquaculture since 1993 and have extensive experience working with Atlantic salmon and Atlantic cod in particular. I have extensive experience with experimental design and have established infection models for several different fish pathogens.

See publications in NVA

My Projects

FRANTIC

Improving resistance of farmed Atlantic cod to francisellosis

2023 - 2028

FLO-biosec

Solutions for water intake, water treatment and biosecurity in FLO

2026 - 2028

CrispResist

Harnessing cross-species variation in sea lice resistance

2021 - 2027

PathoRAS

Pathogen dynamics and disinfection in Atlantic salmon recirculating aquaculture system

2023 - 2026

Temp-Intens

Life cycle study of Atlantic salmon with temperature and salinity as critical test variables

2022 - 2025

ArctiCod

How will climate change affect the production of farmed cod?

2023 - 2024

Insight

Insight into Fish Health under Climate Change

2021 - 2023

Predictive

Predictive fish health under changing environment

2018 - 2020

FarmWELL

Farmed animals welfare toolbox

2018 - 2020

PROGRESS

Programming Fish for Robustness

2017 - 2020

FutureFish

Sustainable breeding of salmon and lumpfish for robustness under climate change

2017 - 2019

Breeding programme for cod

2001

My publications

Lill Heidi Johansen has 56 publications at Nofima:

My Projects

Improving resistance of farmed Atlantic cod to francisellosis

Solutions for water intake, water treatment and biosecurity in FLO

Harnessing cross-species variation in sea lice resistance

Pathogen dynamics and disinfection in Atlantic salmon recirculating aquaculture system

Life cycle study of Atlantic salmon with temperature and salinity as critical test variables

How will climate change affect the production of farmed cod?

Insight into Fish Health under Climate Change

Predictive fish health under changing environment

Farmed animals welfare toolbox

Programming Fish for Robustness

Sustainable breeding of salmon and lumpfish for robustness under climate change

Breeding programme for cod

My publications

Interplay between disinfection and the enigmatic diplomonad parasite Spironucleus salmonicida in Atlantic salmon

Fagleg sluttrapport – Spironucleus salmonicida infeksjoner og spironucleose i norsk akvakultur: smitteveier, vertsspekter og forebygging — SpiroFri – FHF 901831

Welfare Indicators for Aquaculture Research: Toolboxes for Five Farmed European Fish Species

In Atlantic salmon skin infested with salmon lice, elevated seawater temperatures change gene expression and mucus glycosylation, which promotes pathogen binding

Spironucleus salmonicida-fiskeparasittenes svar på Dr. Jekyll & Mr. Hyde

Characterisation of Lumpfish (Cyclopterus lumpus L.) Skin and Development of a Digital Histomorphometric Tool to Analyse It

Effekten av ulike desinfeksjonsstrategier på Spironucleus Salmonicida

Kunnskapskartlegging-produksjon av stor laksesmolt

Effects of dietary lipid level on growth, digestive physiology and disease resistance in lumpfish (Cyclopterus lumpus)

Nasal responses to elevated temperature and Francisella noatunensis infection in Atlantic cod (Gadus morhua)

Assessing Peracetic Acid Application Methodology and Impacts on Fluidized Sand Biofilter Performance

The skin mucosal barrier of lumpfish (Cyclopterus lumpus L.) is weakened by exposure to potential aquaculture production-related stressors

Climate change with increasing seawater temperature will challenge the health of farmed Atlantic Cod (Gadus morhua L.)

Variation in volatile organic compounds in Atlantic salmon mucus is associated with resistance to salmon lice infection

Development of cod farming in Norway: Past and current biological and market status and future prospects and directions

Intermittent administration of peracetic acid is a mild environmental stressor that elicits mucosal and systemic adaptive responses from Atlantic salmon post-smolts

Miljø og fôring for optimal helse og overlevelse av rensefisk i merd

Deep neural network analysis – a paradigm shift for histological examination of health and welfare of farmed fish

Development of Atlantic Salmon (Salmo salar L.) Under Hypoxic Conditions Induced Sustained Changes in Expression of Immune Genes and Reduced Resistance to Moritella viscosa

The optimum velocity for Atlantic salmon post-smolts in RAS is a compromise between muscle growth and fish welfare

Consequences of continuous ozonation on the health and welfare of Atlantic salmon post-smolts in brackish water recirculating aquaculture system

Diversifisering i akvakultur

Transcriptome Responses of Atlantic Salmon (Salmo salar L.) to Viral and Bacterial Pathogens, Inflammation, and Stress

Velferd hos rensefisk – operative velferdsindikatorer (OVI) – RENSVEL. Revidert utgave av rapport 12/2019

Impact of a candidate vaccine on the dynamics of salmon lice (Lepeophtheirus salmonis) infestation and immune response in Atlantic salmon (Salmo salar L.)

Expert-driven methodology to assess and predict the effects of drivers of change on vulnerabilities in a food supply chain: Aquaculture of Atlantic salmon in Norway as a showcase

Peracetic acid as a potential treatment for amoebic gill disease (AGD) in Atlantic salmon – Stage 1

Atlantic salmon (Salmo salar) mounts systemic and mucosal stress responses to peracetic acid

Velferd hos rensefisk – operative velferdsindikatorer (OVI) – RENSVEL

Influence of dietary supplementation of probiotic pediococcus acidilactici MA18/5M during the transition from freshwater to seawater on intestinal health and microbiota of atlantic salmon (Salmo salar L.)

RENSVEL OWI FACT SHEET SERIES: An introduction to Operational and Laboratory-based Welfare Indicators for lumpfish (Cyclopterus lumpus L.)

RENSVEL OWI FACT SHEET SERIES: An introduction to Operational and Laboratory-based Welfare Indicators for ballan wrasse (Labrus bergylta)

Validating a salmon lice vaccine candidate as a preventive measure against salmon lice at the lab-scale

Beste praksis for medikamentfrie metoder for lakseluskontroll (MEDFRI) – Faglig sluttrapport

Smoltification and seawater transfer of Atlantic salmon (Salmo salar L.) is associated with systemic repression of the immune transcriptome

Differences in gene expression in Atlantic salmon parr and smolt after challenge with Piscine orthoreovirus (PRV)

Analyse av sykdomsrelatert risiko forbundet med bruk av villfanget og oppdrettet rensefisk for kontroll av lakselus

Persistent infections with infectious pancreatic necrosis virus (IPNV) of different virulence in Atlantic salmon, Salmo salar L

Comparison of transcriptomic responses to pancreas disease (PD) and heart and skeletal muscle inflammation (HSMI) in heart of Atlantic salmon (Salmo salar L)

Multifaktorielle sykdommer i norsk lakseoppdrett. Sluttrapport

Kunnskap- og metodeutvikling for å styrke laksens robusthet og helse

Intracellular localisation and innate immune responses following Francisella noatunensis infection of Atlantic cod (Gadus morhua) macrophages

TILTAK MOT IPN I NORSK OPPDRETTSNÆRING – GJENNOMGANG AV FORSKNING OG ERFARINGER DE SISTE 10 ÅR

Disease interaction and pathogens exchange between wild and farmed fish populations with special reference to Norway

Smitte mellom oppdrettsfisk og villfisk-hva vet vi?

Evaluering av faktagrunnlaget om påvirkning mellom oppdretts- og villaks: Lakselus

A review of the factual basis of interactions between farmed and wild salmon as it applies to salmon lice

ILA-virus i villfisk og oppdrettsfisk i Troms

Experimental IPN virus infection of Atlantic salmon parr; recurrence of IPN and effects on secondary bacterial infections in post-smolts

Reference genes evaluated for use in infectious pancreatic necrosis virus real-time RT-qPCR assay applied during different stages of an infection

Intensive rearing and welfare in juvenile Atlantic salmon

CpG DNA Induces Protective Antiviral Immune Responses in Atlantic Salmon (Salmo salar L.)

Infectious pancreatic necrosis virus infection in Atlantic salmon Salmo salar post-smolts affects the outcome of secondary infections with infectious salmon anaemia virus or Vibrio salmonicida

Susceptibility to furunculosis, cold water vibriosis and infectious pancreatic necrosis (IPN) in post-smolt Atlantic salmon (Salmo salar L.) as a function of smolt status by seawater transfer.

Multiplication of infectious pancreatic necrosis virus (IPNV) in head kidney and blood leucocytes isolated from Atlantic salmon, Salmo salar L

In vitro studies of infectious pancreatic necrosis virus infections in leucocytes isolated from Atlantic salmon (Salmo salar L.)