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Biography Gerrit Timmerhaus

I have studied biology in Freiburg (Germany) with the topics of molecular biology and bioinformatics. Now I am working in the fields of fish health, disease research via gene expression analysis and bioinformatics.

Gerrit Timmerhaus has 38 publications at Nofima:

Responses to Mineral Supplementation and Salmon Lice (Lepeophtheirus salmonis) Infestation in Skin Layers of Atlantic Salmon (Salmo salar L.)

Sveen, Lene; Krasnov, Aleksei; Timmerhaus, Gerrit; Bogevik, André Sture

2021

Academic article

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

Timmerhaus, Gerrit; Lazado, Carlo C.; Cabillon, Nikko Alvin; Reiten, Britt Kristin Megård; Johansen, Lill-Heidi

2021

Academic article

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

Sveen, Lene; Timmerhaus, Gerrit; Johansen, Lill-Heidi; Ytteborg, Elisabeth

2021

Academic article

Crowding reshapes the mucosal but not the systemic response repertoires of Atlantic salmon to peracetic acid

Lazado, Carlo C.; Sveen, Lene; Soleng, Malene; Pedersen, Lars-Flemming; Timmerhaus, Gerrit

2021

Academic article

Piscine orthoreovirus-1 isolates differ in their ability to induce heart and skeletal muscle inflammation in Atlantic salmon (Salmo salar)

Wessel, Øystein; Hansen, Elisabeth Furuseth; Dahle, Maria; Alarcon, Marta; Vatne, Nina Askim; Nyman, Ingvild Berg; Soleim, Karen Bækken; Kannimuthu, Dhamotharan; Timmerhaus, Gerrit; Markussen, Turhan Ali Dadasbilge; Lund, Morten; Aanes, Håvard; Devold, Magnus; Inami, Makoto; Løvoll, Marie; Rimstad, Espen

2020

Academic article

The Atlantic Salmon Gill Transcriptome Response in a Natural Outbreak of Salmon Gill Pox Virus Infection Reveals New Biomarkers of Gill Pathology and Suppression of Mucosal Defense

Gjessing, Mona Cecilie; Krasnov, Aleksei; Timmerhaus, Gerrit; Brun, Svante; Afanasyev, Sergey; Dale, Ole Bendik; Dahle, Maria

2020

Academic article

Oxidant-induced modifications in the mucosal transcriptome and circulating metabolome of Atlantic salmon

Lazado, Carlo C.; Pedersen, Lars-Flemming; Kirste, Katrine Hånes; Soleng, Malene; Breiland, Mette Serine Wesmajervi; Timmerhaus, Gerrit

2020

Academic article

Performance and welfare of Atlantic salmon, Salmo salar L. post-smolts in recirculating aquaculture systems: Importance of salinity and water velocity

Ytrestøyl, Trine; Takle, Harald Rune; Kolarevic, Jelena; Calabrese, Sara; Timmerhaus, Gerrit; Rosseland, Bjørn Olav; Teien, Hans-Christian; Nilsen, Tom Ole; Handeland, Sigurd O; Stefansson, Sigurd; Ebbesson, Lars; Terjesen, Bendik Fyhn

2020

Academic article

Morphomolecular alterations in the skin mucosa of Atlantic salmon (Salmo salar) after exposure to peracetic acid-based disinfectant

Lazado, Carlo C.; Haddeland, Sindre; Timmerhaus, Gerrit; Berg, Ragnhild Stenberg; Merkin, Grigory; Pittman, Karin; Pedersen, Lars-Flemming

2020

Academic article

Nutrition as a mean to reduce sea lice infestation in Atlantic salmon

Bogevik, André Sture; Sveen, Lene; Ytteborg, Elisabeth; Karlsen, Christian; Lazado, Carlo C.; Krasnov, Aleksei; Timmerhaus, Gerrit; Andersen, Linda; Blindheim, Steffen H.; Myre, Ole; Merkin, Grigory; Okubamichael, Mearge; Pittman, Karin

2019

Nofima reports

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

Lazado, Carlo C.; Timmerhaus, Gerrit; Pedersen, Lars-Flemming; Pittman, Karin; Soleng, Malene; Haddeland, Sindre; Johansen, Lill-Heidi; Breiland, Mette Serine Wesmajervi; Sveen, Lene; Rørmark, Lisbeth; Mohammad, Saima; Hytterød, Sigurd

2019

Nofima reports

Wound healing in post-smolt Atlantic salmon (Salmo salar L.)

Sveen, Lene; Timmerhaus, Gerrit; Krasnov, Aleksei; Takle, Harald Rune; Handeland, Sigurd O; Ytteborg, Elisabeth

2019

Academic article

Antiviral Responses and Biological Concequences of Piscine orthoreovirus Infection in Salmonid Erythrocytes

Wessel, Øystein; Krasnov, Aleksei; Timmerhaus, Gerrit; Rimstad, Espen; Dahle, Maria

2019

Academic literature review

High fish density delays wound healing in Atlantic salmon (Salmo salar)

Sveen, Lene; Timmerhaus, Gerrit; Krasnov, Aleksei; Takle, Harald; Stefansson, Sigurd Olav; Handeland, Sigurd O; Ytteborg, Elisabeth

2018

Academic article

Atlantic salmon skin barrier functions gradually enhance after seawater transfer

Karlsen, Christian; Ytteborg, Elisabeth; Timmerhaus, Gerrit; Høst, Vibeke; Handeland, Sigurd O; Jørgensen, Sven Martin; Krasnov, Aleksei

2018

Academic article

Resolving the complexity of vitellogenins and their receptors in the tetraploid Atlantic salmon (Salmo salar): Ancient origin of the phosvitin-less VtgC in chondrichthyean fishes

Andersen, Øivind; Xu, Chunxia; Timmerhaus, Gerrit; Kirste, Katrine Hånes; Næve, Ingun; Mommens, Maren; Tveiten, Helge

2017

Academic article

Training the salmon’s genes: influence of aerobic exercise, swimming performance and selection on gene expression in Atlantic salmon

Robinson, Nicholas A.; Timmerhaus, Gerrit; Baranski, Matthew; Andersen, Øivind; Takle, Harald Rune; Krasnov, Aleksei

2017

Academic article

Hypoxia tolerance and responses to hypoxic stress during heart and skeletal muscle inflammation in Atlantic salmon (Salmo salar)

Lund, Morten; Dahle, Maria Krudtaa; Timmerhaus, Gerrit; Alarcon, Marta; Powell, Mark; Aspehaug, Vidar; Rimstad, Espen; Jørgensen, Sven Martin

2017

Academic article

Short-term starvation at low temperature prior to harvest does not impact the health and acute stress response of adult Atlantic salmon

Waagbø, Rune; Jørgensen, Sven Martin; Timmerhaus, Gerrit; Breck, Olav; Olsvik, Pål Asgeir

2017

Academic article

Domestication compromises athleticism and respiratory plasticity in response to aerobic exercise training in Atlantic salmon (Salmo salar)

Zhang, Yangfan; Timmerhaus, Gerrit; Anttila, Katja; Mauduit, Florian; Jørgensen, Sven Martin; Kristensen, Torstein; Claireaux, Guy; Takle, Harald Rune; Farrell, Anthony P.

2016

Academic article

Experimental Piscine orthoreovirus infection mediates protection against pancreas disease in Atlantic salmon (Salmo salar)

Lund, Morten; Røsæg, Magnus Vikan; Krasnov, Aleksei; Timmerhaus, Gerrit; Nyman, Ingvild Berg; Aspehaug, Vidar; Rimstad, Espen; Dahle, Maria Krudtaa

2016

Academic article

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

Johansen, Lill-Heidi; Timmerhaus, Gerrit; Afanasyev, Sergey; Jørgensen, Sven Martin; Krasnov, Aleksei

2016

Academic article

Impact of fish density and specific water flow on skin properties in Atlantic salmon (Salmo salar L.) post-smolts

Sveen, Lene; Timmerhaus, Gerrit; Torgersen, Jacob Seilø; Ytteborg, Elisabeth; Jørgensen, Sven Martin; Handeland, Sigurd Olav; Stefansson, Sigurd Olav; Nilsen, Tom Ole; Calabrese, Sara; Ebbesson, Lars O.E.; Terjesen, Bendik Fyhn; Takle, Harald Rune

2016

Academic article

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

Johansen, Lill-Heidi; Dahle, Maria Krudtaa; Wessel, Øystein; Timmerhaus, Gerrit; Løvoll, Marie Therese; Røsæg, Magnus Vikan; Jørgensen, Sven Martin; Rimstad, Espen; Krasnov, Aleksei

2016

Academic article

Rapport/Report 3/2016 – English summary

Hatlen, Bjarne; Jørgensen, Sven Martin; Timmerhaus, Gerrit; Krasnov, Aleksei; Bou, Marta ; Ruyter, Bente; Evensen, Øystein

2016

Nofima reports

Transcriptome analyses of Atlantic salmon (Salmo salar L.) erythrocytes infected with piscine orthoreovirus (PRV)

Dahle, Maria Krudtaa; Wessel, Øystein; Timmerhaus, Gerrit; Nyman, Ingvild Berg; Jørgensen, Sven Martin; Rimstad, Espen; Krasnov, Aleksei

2015

Academic article

Effects of crude oil exposure and elevated temperature on the liver transcriptome of polar cod (Boreogadus saida)

Andersen, Øivind; Frantzen, marianne; Rosland, Marte; Timmerhaus, Gerrit; Skugor, Adrijana; Krasnov, Aleksei

2015

Academic article

Association between swimming performance, cardiorespiratory morphometry, and thermal tolerance in Atlantic salmon (Salmo salar L.)

Anttila, Katja; Jørgensen, Sven Martin; Casselman, Matthew; Timmerhaus, Gerrit; Farrell, Anthony P.; Takle, Harald Rune

2014

Academic article

Cardiac responses to elevated seawater temperature in Atlantic salmon

Jørgensen, Sven Martin; Castro, Vicente; Krasnov, Aleksei; Torgersen, Jacob; Timmerhaus, Gerrit; Hevrøy, Ernst Morten; Hansen, Tom Johnny; Susort, Sissel Tjøstheim; Breck, Olav; Takle, Harald Rune

2014

Academic article

Dietary cholesterol supplementation to a plant-based diet suppresses the complete pathway of cholesterol synthesis and induces bile acid production in Atlantic salmon (Salmo salar L.)

Kortner, Trond Moxness; Björkhem, Ingemar; Krasnov, Aleksei; Timmerhaus, Gerrit; Krogdahl, Åshild

2014

Academic article

Induced erythropoiesis during acute anemia in Atlantic salmon: A transcriptomic survey

Krasnov, Aleksei; Timmerhaus, Gerrit; Afanasyev, Sergey; Takle, Harald Rune; Jørgensen, Sven Martin

2013

Academic article

Genomic analysis of the host response to nervous necrosis virus in Atlantic cod (Gadus morhua) brain

Krasnov, Aleksei; Kileng, Øyvind; Skugor, Stanko; Jørgensen, Sven Martin; Afanasyev, Sergey; Timmerhaus, Gerrit; Sommer, Ann Inger; Jensen, Ingvill

2013

Academic article

Kunnskap- og metodeutvikling for å styrke laksens robusthet og helse

Jørgensen, Sven Martin; Sørensen, Mette; Torgersen, Jacob; Todorcevic, Marijana; Østbye, Tone-Kari K; Aas-Hansen, Øyvind; Johansen, Lill-Heidi; Timmerhaus, Gerrit; Bao, Marta; Alarcon, Marta; Mørkøre, Turid; Krasnov, Aleksei; Ruyter, Bente; Takle, Harald Rune

2012

Nofima reports

Comparison of Atlantic salmon individuals with different outcomes of cardiomyopathy syndrome (CMS)

Timmerhaus, Gerrit; Krasnov, Aleksei; Takle, Harald Rune; Afanasyev, Sergey; Nilsen, Pål; Rode, Marit; Jørgensen, Sven Martin

2012

Academic article

Cardiomyopathy syndrome (CMS) in Atlantic salmon, Salmo salar L.: functional genomics studies of host-pathogen responses and disease markers / Kardiomyopatisyndrom (CMS) hos Atlantisk laks, Salmo salar L.: funksjonell genomikk studier av vert-patogen responser og sykdomsmarkører

Timmerhaus, Gerrit

2012

Doctoral dissertation

Genomic survey of early responses to viruses in Atlantic salmon, Salmo salar L

Krasnov, Aleksei; Timmerhaus, Gerrit; Schiøtz, Berit Lyng; Torgersen, Jacob; Afanasyev, Sergey; Iliev, Dimitar Borisov; Jørgensen, Jorunn B; Takle, Harald Rune; Jørgensen, Sven Martin

2011

Academic article

IPNV with high and low virulence: host immune responses and viral mutations during infection

Skjesol, Astrid; SkjÆveland, ingrid; Elnæs, Marianne; Timmerhaus, Gerrit Frantz; Fredriksen, Børge Nilsen; Jørgensen, Sven Martin; Krasnov, Aleksei; Jørgensen, Jorunn B

2011

Academic article

Development and assessment of oligonucleotide microarrays for Atlantic salmon (Salmo salar L.)

Krasnov, Aleksei; Timmerhaus, Gerrit; Afanasyev, Sergey; Jørgensen, Sven Martin

2011

Academic article

CrispResist

1. January 2021 – 31. December 2024

Do Pacific salmon species carry a secret they could share with Atlantic salmon? What is it in the genes that make these relatives of Atlantic salmon less susceptible to lice? Researchers will now find the answers to these questions, using the gene editing method CRISPR-Cas9.

CMSEdit

1. March 2019 – 28. February 2023

Identify and validate candidate genes for CMS resistance in Atlantic salmon through state-of-the-art gene editing.

Predictive

1. January 2018 – 31. December 2020

The overall aim of the project is to expand the knowledge on how the environment affects the biology of farmed fish and develop robust systems that may be used to screen and evaluate the impacts of the challenges related to changing environment.

FarmWELL

1. January 2018 – 31. December 2020

The health and welfare of farmed and captured aquatic animals is becoming increasingly important for current and future aquaculture systems. We need to improve our understanding of their health and welfare status to strengthen the resilience and robustness of both the animals and the industry.