Blar i NTNU Open på forfatter "Olsen, Yngvar"
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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 ... -
Modelling the cultivation and bioremediation potential of the kelp Saccharina latissima in close proximity to an exposed salmon farm in Norway
Broch, Ole Jacob; Ellingsen, Ingrid H.; Forbord, Silje; Wang, Xinxin; Volent, Zsolt; Alver, Morten; Handå, Aleksander; Andresen, Kjersti; Slagstad, Dag; Reitan, Kjell Inge; Olsen, Yngvar; Skjermo, Jorunn (Journal article; Peer reviewed, 2013)A 3-dimensional hydrodynamic−ecological model system (SINMOD) was used to estimate the full-scale cultivation potential of the brown alga Saccharina latissima in integrated multi-trophic aquaculture (IMTA) with Atlantic ... -
Monitoring regional benthic environment of Norwegian salmon cage farms
Wang, Chun-Deng; Olsen, Yngvar (Peer reviewed; Journal article, 2024)The influence of cage aquaculture on the benthic environment is a crucial concern for sustainable development. The impacts are affected by multiple environmental factors and aquaculture operations. Our main objective was ... -
Morfologiske relasjonar til dyrka Saccharina latissima ved tre stasjonar langs Norskekysten
Foldal, Solveig (Master thesis, 2018)Makroalgar har i tusenvis av år blitt brukt til mat og andre føremål over heile verda, og land som Kina, Korea og Japan har ein lang tradisjon for kultivering av tare. I Europa derimot er taren hovudsakleg hausta frå ville ... -
NUTRIENT EMISSION AND PELAGIC ECOSYSTEM EFFECT OF SALMON AQUACULTURE IN THE NORD-MORE REGION
Nguyen, Thi Mai Thao (Master thesis, 2012)The main objective of this thesis was to estimate nutrient emission rate of carbon (C), nitrogen (N) and phosphorous (P) waste from salmon farms and to evaluate the environmental impact of salmon aquaculture on planktonic ... -
Optimal physical and chemical environment for vegetative gametophyte culture of Saccharina latissima: - with emphasis on nutrient composition and light quality
Matsson, Sanna (Master thesis, 2013)The production of sporelings is a bottle-neck when cultivating Saccharina latissima. Establishing a vegetative gametophyte stocks gives a constant supply of healthy sporelings, enabling a year-round cultivation independent ... -
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 ... -
Phenylalanine Hydroxylase RNAi Knockdown Negatively Affects Larval Development, Molting and Swimming Performance of Salmon Lice
Guragain, Prashanna; Sporsheim, Bjørnar; Skjesol, Astrid; Båtnes, Anna Solvang; Olsen, Yngvar; Bones, Atle M.; Winge, Per (Peer reviewed; Journal article, 2020)Phenylalanine hydroxylase (PAH) is a crucial enzyme involved in tyrosine biosynthesis, having roles in neurological and physiological processes. The purpose of PAH has received little attention in crustaceans despite ... -
Planktonic and Parasitic Sea Lice Abundance on Three Commercial Salmon Farms in Norway Throughout a Production Cycle
Jevne, Lone Sunniva; Guttu, Ane Maria; Båtnes, Anna Solvang; Olsen, Yngvar; Reitan, Kjell Inge (Peer reviewed; Journal article, 2021)The present article reports the densities of planktonic sea lice (Lepeophtheirus salmonis and Caligus elongatus) in three Atlantic salmon (Salmo salar) localities, and the relationship between the abundance of adult sea ... -
Population analysis and structure and RNA interference to understand salmon lice biology and a review of the principles of controlling infestation in aquaculture facilities
Guragain, Prashanna (Doctoral theses at NTNU;2022:232, Doctoral thesis, 2022)The arthropod salmon louse (Lepeophtheirus salmonis) is a significant hazard to aquaculture and to the wild Atlantic salmon. In a monoculture environment, very high host densities may result in rapid reproduction and in ... -
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 ... -
Proteininnhold og vekst for Saccharina latissima dyrket ved varierende tilførsel av nitrat og lys
Jevne, Lone Sunniva (Master thesis, 2015)Det trengs en økning av matproduksjonen i verden, og en løsning er økning av akvakultur. For at en økning i akvakultur av fôrede arter skal være mulig og bærekraftig trengs det en ny kilde til proteiner som kan supplere ... -
Quantifying regional feed utilization, production and nutrient waste emission of Norwegian salmon cage aquaculture
Wang, Chun-Deng; Olsen, Yngvar (Peer reviewed; Journal article, 2023)ABSTRACT: We analyzed growth performance and waste emissions of cage aquaculture responding to biophysical conditions that vary along the coastline of Norway. The analysis is based on a published mass balance model predicting ... -
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 ... -
Resipientforhold i Sanddøla- og Luruvassdraget i Nordli, Grong og Snåsa kommune i Nord-Trøndelag
Reinertsen, Helge; Olsen, Yngvar; Nøst, Terje; Rueslåtten, Håkon G.; Skotvold, Trond (NTNU Vitenskapsmuseet Rapport Zoologisk Serie, 0802-0833; 1982:11, Research report, 1982) -
Resources for fish feed in future mariculture
Olsen, Yngvar (Journal article; Peer reviewed, 2011)ABSTRACT: There is a growing concern about the ability to produce enough nutritious food to feed the global human population in this century. Environmental conflicts and a limited freshwater supply constrain further ... -
Responses in the bacterial community structure to waste nutrients from aquaculture: an in situ microcosm experiment in a Chilean fjord
Olsen, Lasse Mork; Hernandez, Klaudia; Ardelan, Murat Van; Iriarte, Jose Luis; Bizsel, Can; Olsen, Yngvar (Journal article; Peer reviewed, 2017)Chilean salmon farms release inorganic nutrients excreted by the fish into the surrounding water in Patagonian fjords. The objective of this experiment from the Comau Fjord (42.2° S) in southern Chile was to study how ... -
Responses in the microbial food web to increased rates of nutrient supply in a southern Chilean fjord: Possible implications of cage aquaculture
Olsen, Lasse Mork; Hernandez, Klaudia; Ardelan, Murat Van; Iriarte, Jose Luis; Sanchez, Nicolas; Gonzalez, Humberto E.; Tokle, Nils Egil; Olsen, Yngvar (Journal article; Peer reviewed, 2014)ABSTRACT: Cage fish farms release the inorganic nutrients ammonium (NH4) and phosphate (PO4) into the surrounding water. The objectives of this experiment from the Comau fjord (42.2° S) in southern Chile was to study how ... -
Saccharina latissima, effekt av utskiftningsintervall av medium for vegetative gametofytter og utsåingstetthet på vekst, samt stresstester av kimplanter.
Slatlem, Karina (Master thesis, 2016)Norge er et land som har et stort potensiale for å drive tareoppdrett med sin langstrakte kystlinje. For at denne næringen skal bli konkurransedyktig, må næringen gjøres kostnadseffektiv. For økt produksjon av kimplanter ... -
Sammenlikning av mekanisk og termisk avlusing: Klekkesuksess og larveutvikling fra eggstrenger med vurdering av smittepotensial hos lakselus (Lepeophtheirus salmonis)
Furberg, Mikael Hansen (Master thesis, 2022)Norsk lakseoppdrett har hatt en god økonomisk og produksjonsmessig vekst siden 2000-tallet. De siste årene har produksjonen likevel stagnert på grunn av utfordringer med lakselus (Lepeophtheirus salmonis Krøyer, 1837). ...