Blar i NTNU Open på forfatter "Attramadal, Kari"
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Bacterial community assembly in Atlantic cod larvae (Gadus morhua): Contributions of ecological processes and metacommunity structure
Vestrum, Ragnhild Inderberg; Attramadal, Kari; Vadstein, Olav; Gundersen, Madeleine Stenshorne; Bakke, Ingrid (Peer reviewed; Journal article, 2020)Many studies demonstrate the importance of the commensal microbiomes to animal health and development. However, the initial community assembly process is poorly understood. It is unclear to what extent the hosts select for ... -
Biological Nitrogen Removal of Effluents from Amine-based CO2 Capture Plants: Screening, Feasibility and Limitations
Henry, Ingrid Annemarie (Doctoral theses at NTNU;2016:359, Doctoral thesis, 2016)Biological Treatment of Waste from Carbon Capture and Storage (CCS) – Screening, feasibility and limitations. Carbon capture and storage (CCS) is becoming an important technology to combat climate change. In CCS, carbon ... -
A comparison of two seawater adaptation strategies for Atlantic salmon post-smolt (Salmo salar) grown in recirculating aquaculture systems (RAS): Nitrification, water and gut microbiota, and performance of fish
Fossmark, Ragnhild Olsen; Attramadal, Kari; Kristian, Nordøy; Østerhus, Stein Wold; Vadstein, Olav (Peer reviewed; Journal article, 2021)The land-based production phase in Norwegian Atlantic salmon farming has the past years been extended to include post-smolt for an increasing number of farmers. Post-smolt production can involve introduction of brackish/seawater ... -
The Effect of Membrane Filtration on the Microbial Community Dynamics in RAS for Post-Smolt Production
Fossmark, Ragnhild Olsen (Master thesis, 2016)An increased interest for recirculating aquaculture systems (RAS) the past years have led to more research on water treatment processes and how they affect water quality. Most studies have been focusing on the units governing ... -
Effects of reduced organic matter loading through membrane filtration on the microbial community dynamics in recirculating aquaculture systems (RAS) with Atlantic salmon parr (Salmo salar)
Fossmark, Ragnhild Olsen; Vadstein, Olav; Rosten, Trond Waldemar; Bakke, Ingrid; Koseto, Deni; Bugten, Anette Voll; Helberg, Gaute Alexander Nedberg; Nesje, Jenny; Jørgensen, Niels O.G.; Raspati, Gema Sakti; Azrague, Kamal; Østerhus, Stein Wold; Attramadal, Kari (Peer reviewed; Journal article, 2020)A key challenge in recirculating aquaculture systems (RAS) is the accumulation of particulate organic matter, especially the fine and colloidal fraction due to low removal efficiency of today's technology. The supply of ... -
Impacts of Organic Matter Removal Efficiency on the Microbial Carrying Capacity and Stability of Land-Based Recirculating Aquaculture Systems
Nesje, Jenny (Master thesis, 2018)Accumulation of organic matter and particles generated from uneaten feed and faeces is one of the major challenges in recirculating aquaculture systems (RAS), in particular colloidal and dissolved fractions as these serve ... -
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 ... -
Kjemisk desinfisering av egg til copepoden Acartia tonsa
Singsaas, Katrine (Master thesis, 2014)Copepoder har god næringsverdi og er en viktig fôrkilde for marine fiskelarver i havet. Vedoppdrett av mange marine fiskearter er copepoder et godt alternativ til de tradisjonellefôrorganismene; Artemia og rotatorier. ... -
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 ... -
Marint RAS-anlegg - For produksjon av laks med gjenbruk av ressursar
Eide, Erlend (Master thesis, 2017)Dei siste åra har produksjonskostnaden i norsk oppdrettsnæring for laks auka som eit resultat av miljøutfordringane næringa står overfor. Mangel på areal, lakselus, sjukdom, rømming og utslepp har tvinga myndigheitene til ... -
OC2017 A-029 - Vannkvalitet og startfôring av rognkjeks - Effekt av fôring med levende copepoder i tidlige faser (FHF prosjekt nr 901174)
Dahle, Stine Veronica Wiborg; Hagemann, Andreas; Attramadal, Kari; Kjørsvik, Elin; Bardal, Tora (Research report, 2017)I oppdrett av rognkjeks benyttes fonnulert tønfor av små partikler fra start, som gir mye forspill i karene. Høy og varierende organisk belastning i systemet gir grobunn for oppblomstring av opportunistiske bakterier ... -
Production of lumpfish in RAS with distinct water treatments: Effects on fish survival, growth, gill health and microbial communities in rearing water and biofilm
Dahle, Stine Veronica Wiborg; Bakke, Ingrid; Birkeland, Mari; Nordøy, Kristian; Dalum, Alf Seljenes; Attramadal, Kari (Peer reviewed; Journal article, 2020)Lumpfish in Norway is currently produced in traditional flow-through systems (FTS). Hatcheries frequently show signs of bacterial infections, unstable microbial communities in the rearing water and varying mortality. ... -
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 Development of the Gut Microbiota in European Lobster (Homarus gammarus) Juveniles Exposed to Two Different Water Treatment Systems
Kristensen, Elisabeth (Master thesis, 2015)Aquaculture today exploits only a limited number of species for production and there is a need to utilize novel species. One such species that could contribute to meeting the demands of the market is the European lobster. ... -
The effect of membrane filtration on the microbial communities associated with rearing water, gut and skin mucus of Atlantic salmon parr (Salmo salar) in recirculating aquaculture systems (RAS)
Bugten, Anette Voll (Master thesis, 2018)Fish are constantly in contact with microorganisms in the surrounding environment, and their mucosal surfaces; skin, gills and the gastrointestinal tract are colonized by microbiota that play vital functions for their ... -
The Effects of Different Water Treatments on Microbial Community in a Commercial-scale RAS for Production of Lumpsucker (Cyclopterus lumpus)
Birkeland, Mari Båtnes (Master thesis, 2019)Rognkjeks (Cyclopterus lumpus) har nylig blitt introdusert som rensefisk i norsk oppdrett av laks (Salmo salar). Det har blitt antatt at oppdrett av rognkjeks i resirkulerende akvakultursystemer (RAS) vil forbedre vekst ...