Blar i Institutt for bioteknologi og matvitenskap på forfatter "Olsen, Yngvar"
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A new Norwegian bioeconomy based on cultivation and processing of seaweeds: Opportunities and R&D needs
Skjermo, Jorunn; Aasen, Inga Marie; Arff, Johanne; Broch, Ole Jacob; Carvajal, Ana Karina; Christie, Hartvig C; Forbord, Silje; Olsen, Yngvar; Reitan, Kjell Inge; Rustad, Turid; Sandquist, Judit; Solbakken, Roar; Steinhovden, Kristine; Wittgens, Bernd; Wolff, Robert; Handå, Aleksander (Research report, 2014) -
Bacterial community composition responds to changes in copepod abundance and alters ecosystem function in an Arctic mesocosm study
Tsagaraki, Tatiana Margo; Pree, Bernadette; Leiknes, Øystein; Larsen, Aud; Bratbak, Gunnar; Øvreås, Lise; Egge, Jorun Karin; Spanek, Roman; Paulsen, Maria Lund; Olsen, Yngvar; Vadstein, Olav; Thingstad, T. Frede (Journal article; Peer reviewed, 2018)Combining a minimum food web model with Arctic microbial community dynamics, we have suggested that top-down control by copepods can affect the food web down to bacterial consumption of organic carbon. Pursuing this ... -
Commensal and opportunistic bacteria present in the microbiota in atlantic cod (Gadus morhua) larvae differentially alter the hosts’ innate immune responses
Vestrum, Ragnhild Inderberg; Forberg, Torunn; Luef, Birgit; Bakke, Ingrid; Winge, Per; Olsen, Yngvar; Vadstein, Olav (Journal article; Peer reviewed, 2022)The roles of host-associated bacteria have gained attention lately, and we now recognise that the microbiota is essential in processes such as digestion, development of the immune system and gut function. In this study, ... -
Comparative transcriptomics reveals domestication‐associated features of Atlantic salmon lipid metabolism
Jin, Yang; Olsen, Rolf Erik; Harvey, Thomas Nelson; Østensen, Mari-Ann; Li, Keshuai; Santi, Nina; Vadstein, Olav; Bones, Atle M.; Vik, Jon Olav; Sandve, Simen Rød; Olsen, Yngvar (Peer reviewed; Journal article, 2020)Domestication of animals imposes strong targeted selection for desired traits but can also result in unintended selection due to new domestic environments. Atlantic salmon was domesticated in the 1970s and has subsequently ... -
Correlation between microbiota and growth in Mangrove Killifish (Kryptolebias marmoratus) and Atlantic cod (Gadus morhua)
Forberg, Torunn; Sjulstad, Eli Bjørnø; Bakke, Ingrid; Olsen, Yngvar; Hagiwara, Atsushi; Sakakura, Yoshitaka; Vadstein, Olav (Journal article; Peer reviewed, 2016)The vertebrate gut is host to large communities of bacteria, and one of the beneficial contributions of this commensal gut microbiota is the increased nutritional gain from feed components that the host cannot degrade on ... -
Dietary fatty acid source has little effect on the development of the immune system in the pyloric caeca of Atlantic salmon fry
Jalili, Mahsa; Jin, Yang; Bones, Atle M.; Olsen, Yngvar; Vadstein, Olav; Østensen, Mari-Ann; Buonocore, Francesco; Gerdol, Marco; Pallavicini, Alberto; Scapigliati, Giuseppe (Journal article; Peer reviewed, 2019)The quality and relative amounts of dietary lipids may affect the health and growth of cultured Atlantic salmon. So far, little is known about their effects on the performance of the fish immune system during early life ... -
Dietary Lipid Effects on Gut Microbiota of First Feeding Atlantic Salmon (Salmo salar L.)
Eleni, Nikouli; Konstantinos Ar., Kormas; Yang, Jin; Olsen, Yngvar; Bakke, Ingrid; Vadstein, Olav (Peer reviewed; Journal article, 2021)Decline in fish oil and fish meal availability has forced the aquaculture sector to investigate alternative and sustainable aquafeed ingredients. Despite that several studies have evaluated the effect of fish oil replacement ... -
Effect of hydroxamate and catecholate siderophores on iron availability in the diatom Skeletonema costatum: Implications of siderophore degradation by associated bacteria
Sanchez, Nicolas; Peterson, Claire Katja; Villa Gonzalez, Susana; Vadstein, Olav; Olsen, Yngvar; Ardelan, Murat Van (Journal article; Peer reviewed, 2019)The bioavailability of iron (Fe) across marine ecosystems, mainly determined by Fe speciation and species-specific requirements of phytoplankton, remains largely unresolved. Siderophores are relevant within the pool of ... -
Effect of Siderophore on Iron Availability in a Diatom and a Dinoflagellate Species: Contrasting Response in Associated Bacteria
Sanchez, Nicolas; Brown, Eunice Nana Adjoa; Olsen, Yngvar; Vadstein, Olav; Iriarte, Jose Luis; Gonzalez, Humberto E.; Ardelan, Murat Van (Journal article; Peer reviewed, 2018)Organic ligands play a key role controlling trace metal bioavailability in the world's oceans, yet the species-specific requirements determining whether certain iron forms can be metabolized largely remain unclear. ... -
K-selection as microbial community management strategy: A method for improved viability of larvae in aquaculture
Vadstein, Olav; Attramadal, Kari; Bakke, Ingrid; Olsen, Yngvar (Journal article; Peer reviewed, 2018)Aquaculture has the potential to become a major food supplier in a world with an increasing human population, and increased consumption of fish will likely have positive health implications. For marine aquaculture, the ... -
Managing the microbial community of marine fish larvae: a holistic perspective for larviculture
Vadstein, Olav; Attramadal, Kari; Bakke, Ingrid; Forberg, Torunn; Olsen, Yngvar; Verdegem, Marc; Giatsis, C.; Skjermo, Jorunn; Aasen, Inga Marie; Gatesoupe, Francois-Joel; Dirckens, Kristof; Sorgeloos, Patrick; Bossier, Peter (Journal article; Peer reviewed, 2018)The availability of high-quality juveniles is a bottleneck in the farming of many marine fish species. Detrimental larvae-microbe interactions are a main reason for poor viability and quality in larval rearing. In this ... -
Pathways of Lipid Metabolism in Marine Algae, Co-Expression Network, Bottlenecks and Candidate Genes for Enhanced Production of EPA and DHA in Species of Chromista
Mühlroth, Alice; Li, Keshuai; Røkke, Gunvor; Winge, Per; Olsen, Yngvar; Hohmann-Marriott, Martin Frank; Vadstein, Olav; Bones, Atle M. (Journal article; Peer reviewed, 2013)The importance of n-3 long chain polyunsaturated fatty acids (LC-PUFAs) for human health has received more focus the last decades, and the global consumption of n-3 LC-PUFA has increased. Seafood, the natural n-3 LC-PUFA ... -
Principles and Methods of Counteracting Harmful Salmon–Arthropod Interactions in Salmon Farming: Addressing Possibilities, Limitations, and Future Options
Guragain, Prashanna; Tkachov, Max; Båtnes, Anna Solvang; Olsen, Yngvar; Winge, Per; Bones, Atle M. (Peer reviewed; Journal article, 2021)The arthropod salmon louse (Lepeophtheirus salmonis) is a major threat to Atlantic salmon aquaculture and wild salmonids. Essentially like in monoculture, very high concentrations of susceptible hosts may result in high ... -
Rearing water treatment induces microbial selection influencing the microbiota and pathogen associated transcripts of cod (Gadus morhua) larvae.
Vestrum, Ragnhild Inderberg; Attramadal, Kari; Winge, Per; Li, Keshuai; Olsen, Yngvar; Bones, Atle M.; Vadstein, Olav; Bakke, Ingrid (Journal article; Peer reviewed, 2018)We have previously shown that K-selection and microbial stability in the rearing water increases survival and growth of Atlantic cod (Gadus morhua) larvae, and that recirculating aquaculture systems (RAS) are compatible ... -
Temporal dynamics of carbon sequestration in coastal North Atlantic fjord system as seen through dissolved organic matter characterisation
Mathew, K Avarachen; Ardelan, Murat Van; Villa Gonzalez, Susana; Vadstein, Olav; Sajith Vezhapparambu, Veena; Leiknes, Øystein; Mankettikkara, Rahman; Olsen, Yngvar (Peer reviewed; Journal article, 2021)Fjord systems in higher latitudes are unique coastal water ecosystems that facilitate the study of dissolved organic matter (DOM) dynamics from surface to deeper waters. The current work was undertaken in the Trondheim ... -
The Effect of Essential Fatty Acids for the Somatic Growth in Nauplii of Calanus finmarchicus
Leiknes, Øystein; Siv Anina, Etter; Nils Egil, Tokle; Maria, Bergvik; Vadstein, Olav; Olsen, Yngvar (Journal article; Peer reviewed, 2016) -
Transcriptional regulation of lipid metabolism when salmon fry switches from endogenous to exogenous feeding
Jin, Yang; Olsen, Rolf Erik; Østensen, Mari-Ann; Gillard, Gareth Benjamin; Li, Keshuai; Harvey, Thomas Nelson; Santi, Nina; Vadstein, Olav; Vik, Jon Olav; Sandve, Simen Rød; Olsen, Yngvar (Journal article; Peer reviewed, 2018)The onset of first feeding is a critical period for Atlantic salmon (Salmo salar). The fish goes through a dramatic transition, from using the yolk sac as an energy and nutrient resource to rely on exogenous food. However, ...