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norskFakultet for biovitenskap, fiskeri og økonomi: Nye registreringer
Viser treff 301-320 av 5171
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Evolutionary history and seascape genomics of Harbour porpoises (Phocoena phocoena) across environmental gradients in the North Atlantic and adjacent waters
(Journal article; Tidsskriftartikkel; Peer reviewed, 2023-09-08)The Harbour porpoise (Phocoena phocoena) is a highly mobile cetacean species primarily occurring in coastal and shelf waters across the Northern hemisphere. It inhabits heterogeneous seascapes broadly varying in salinity and temperature. Here, we produced 74 whole genomes at intermediate coverage to study Harbour porpoise's evolutionary history and investigate the role of local adaptation in the ... -
Effects of Codend Mesh-Shape and Size on the Size Selectivity of Demersal Trawl Targeting Banded Scad (Alepes djedaba) in the Beibu Gulf, South China Sea
(Journal article; Tidsskriftartikkel; Peer reviewed, 2023-07-09)In order to optimize the size selectivity of demersal trawl targeting Banded Scad, Alepes djedaba, in the South China Sea (SCS), we tested and compared the selective properties of four experimental codends. These codends included two diamond-mesh codends (T0 codends) with different mesh openings (30 and 35 mm), and two T90 codends (the netting was turned by 90 degrees) with the relatively same ... -
Linking extreme seasonality and gene expression in Arctic marine protists
(Journal article; Tidsskriftartikkel; Peer reviewed, 2023-09-05)At high latitudes, strong seasonal differences in light availability affect marine organisms and regulate the timing of ecosystem processes. Marine protists are key players in Arctic aquatic ecosystems, yet little is known about their ecological roles over yearly cycles. This is especially true for the dark polar night period, which up until recently was assumed to be devoid of biological activity. ... -
Sublethal effects of environmental pollutant exposure in birds of prey: Evaluating biomarkers of health as indicators of contaminant-mediated effects in two sentinel raptor species
(Doctoral thesis; Doktorgradsavhandling, 2023-11-02)Environmental pollution emerged as a major concern in the mid-20th century primarily due to the unrestricted release of industrial chemicals and pesticides. Among wildlife species, apex predators, like raptors, have been heavily exposed to environmental pollutants such as organo-halogenated contaminants (OHCs) and metals (e.g., mercury). Due to their high trophic position, harmful levels of these ... -
Macrofauna and meiofauna food-web structure from Arctic fjords to deep Arctic Ocean during spring: A stable isotope approach
(Journal article; Tidsskriftartikkel; Peer reviewed, 2023-07-13)The knowledge on benthic trophic relations is particularly important for understanding the functioning of still pristine and less studied Arctic Ocean ecosystems. This study examines the benthic food-web structure in the European sector of the Arctic Ocean and assesses if and how it differs along depth gradients in the marginal seaice zone during spring. Samples of the sediment organic matter were ... -
Remote Operation of Marine Robotic Systems and Next-Generation Multi-Purpose Control Rooms
(Journal article; Tidsskriftartikkel; Peer reviewed, 2023-10-08)Since 2017, NTNU’s Applied Underwater Robotics Laboratory has been developing an infrastructure for remote marine/subsea operations in Trondheim Fjord. The infrastructure, named the OceanLab subsea node, allows remote experimentation for three groups of assets: seabed infrastructure, surface or subsea vehicles/robots, and assets at remote experimentation sites. To achieve this task, a shoreside ... -
Bioaktive forbindelser i brunalger
(Master thesis; Mastergradsoppgave, 2020-05-15)<p>Hensikten med marin bioprospektering er å identifisere interessante bioaktive forbindelser som kan ha potensial for kommersiell utnyttelse og videreutvikles til blant annet legemidler. De fleste av disse bioaktive forbindelsene har man til nå funnet i organismer som lever på land, men når man nå leter etter nye stoffer er det enorme biologiske mangfoldet i havet en veldig interessant plass å ... -
"Når det blåser i fra ØST" - Om bruken av økosystemtjeneste-perspektivet i kystsoneplanleggingen
(Research report; Forskningsrapport, 2019)Denne rapporten er et resultat av prosjektet Coreplan, som har undersøkt om metoder og tilnærminger som finnes i litteraturen om økosystemtjenester kan bidra til å styrke kystsoneforvaltningen. I rapporten diskuterer vi utviklingstrekk i norsk kystsoneplanlegging og hvordan utviklingen i bruken av kysten kan stille nye krav til kystsoneplanleggingen. Vi forklarer bakgrunnen for begrepet økosystemtjenester, ... -
Fish investigations in the Barents Sea winter 2017
(Research report; Forskningsrapport, 2017)Annual catch quotas and other regulations of the Barents Sea fisheries are set through negotiations between Norway and Russia. Assessment of the state of the stocks and quota advices are given by the International Council for the Exploration of the Sea (ICES). Their work is based on survey results and international landings statistics. The results from the demersal fish winter surveys in the ... -
Studier av B-celler hos laks (Salmo salar) - Aktiveres de av TLR-ligander?
(Master thesis; Mastergradsoppgave, 2022-05-29)Virussykdommer hos atlantisk laks (Salmo salar) er en av de største utfordringene i norsk akvakulturindustri, og i tillegg til store økonomiske tap for næringa, fører virussykdommene også med seg store fiskevelferdsmessige problemer. Virusvaksinene som er tilgjengelig på det norske markedet i dag har vist å gi begrenset grad av beskyttelse, og velferdsmessige bekymringer er knyttet opp mot bivirkningene ... -
Studiar av B-celler hos laks (Salmo salar) – blir dei aktiverte av TLR-ligandar?
(Master thesis; Mastergradsoppgave, 2022-05-29)Pankreassjukdom, infeksiøs lakseanemi, hjarte- og skjelettmuskelbetennelse og kardiomyopatisyndrom er dei mest utbreidde virussjukdommane i oppdrettsnæringa i Noreg i dag. Sjukdommane har skulda for sterkt nedsett velferd for laksefisk, og store økonomiske tap for oppdretterar langs heile kysten. Vaksinane som blir nytta mot virus i dag har ikkje tilfredsstillande effekt, då vaksinert fisk framleis ... -
Investigating the influence of biotic and abiotic factors on the phytochemical variation of lingonberries (Vaccinium vitis-idaea L.) in Norway
(Doctoral thesis; Doktorgradsavhandling, 2023-10-20)Lingonberry is an evergreen dwarf shrub abundant and is a food traditionally regarded as a staple of Nordic diets. There is limited commercial harvest of these readily available berries. The objective of this doctoral thesis is to investigate how the composition Norwegian lingonberries vary and investigate how the composition of the lingonberries is affected by abiotic and biotic growth conditions. ... -
Smart Shopping Carts to Increase Healthier Food Purchase: A Conjoint Experiment
(Chapter; Bokkapittel, 2023)Shopping carts, in general, should be suitable for carrying smart technology in the retail store environment. Also, a smart shopping cart can present verbal motivating stimuli to increase healthier food purchases. A conjoint experiment was used to test with a hypothetical purchasing task for young consumers (n=91) the potential of motivating stimulus on smart shopping carts to influence healthier ... -
Bortfall av MSC-godkjenning for norske fiskerier. Betydningen av miljømerking og sertifisering
(Master thesis; Mastergradsoppgave, 2022-05-16)Formålet til oppgaven er å bidra til økt forståelse for miljømerking og sertifisering som styringsform til ressursforvaltning, til tross for at det finnes reguleringer i fiske fra myndighetenes side. Den har også til hensikt å gi økt innsikt på betydningen dette har for norsk fiskerinæring. På bakgrunn av dette ble problemstillingen «Hva slags styringsformer er miljømerker og sertifisering, og hvilken ... -
Ikke-klassiske MHC klasse I L-linjegener i atlantisk laks (Salmo salar) - Potensiell funksjonell rolle som tidlige antivirale varslingssignaler
(Master thesis; Mastergradsoppgave, 2022-05-18)The Atlantic salmon farming industry is constantly growing in Norway and if managed properly can present a viable solution to the constantly increasing food demand resulting from staggering human population growth. However, one of the main challenges the industry is facing are re- curring fish viral disease outbreaks. Fish vaccination strategies, especially with multicompo- nent vaccines, is used ... -
Havbruksnæringen og koronapandemien
(Master thesis; Mastergradsoppgave, 2022-05-16)Norsk havbruksnæring har siden starten på 1970-tallet hatt en kontinuerlig vekst og utvikling. Norsk atlantisk laks har en stor etterspørsel i det globale markedet. I dag er næringen Norges nest største eksportnæring. Det aller meste som havbruksnæringen produserer blir eksportert ut av landet. Bransjen er derfor avhengig av sine utenlandske kunder. Det store spørsmålet er hvordan havbruksnæringen ... -
Determination of peracetic acid exposure concentration without effect on Atlantic salmon parr health, welfare or growth cultured in RAS.
(Master thesis; Mastergradsoppgave, 2021-11-14)Recirculating aquaculture systems (RAS) are replacing land-based flow through systems in Norway and other producing countries. RAS has many advances but also bring some biological challenges as water disinfection that may compromise biofilters performance and fish health and welfare. For example, Denmark is using peracetic acid (PAA) as a water disinfection strategy to control pathogens for rainbow ... -
Exploring the Biotechnological Potential of the Secretome from the Marine Fungus Digitatispora marina Proteomics, Bioinformatics and Heterologous Expression of Novel Proteases
(Master thesis; Mastergradsoppgave, 2022-05-16)Cold-adapted enzymes are of biotechnological value due to their high catalytic powers at low to moderate temperatures and their high thermolability at elevated temperatures. Marine fungi are an understudied group of organisms, which makes them interesting as enzyme producers because of their adaptions to marine habitats. In this thesis study, a bioprospecting pipeline was constructed, and different ... -
Aquaculture market, diversity, and economic development of Bangladesh for the millennium 1995-2019
(Master thesis; Mastergradsoppgave, 2022-09-05)Bangladesh is regarded as one of the most favorable regions in the world for aquaculture and fisheries attributed to its largest flooded wetland and third-largest aquatic biodiversity in Asia, behind China and India. The aquaculture in Bangladesh is crucial to the economy and diet of the world population. The purpose of this thesis is to review on aquaculture market, diversity, and their contribution ... -
Identifying the Genetic Population Structure Knowledge Gaps Hindering an Improved Management of the Spurdog (Squalus acanthias) stock in the Northeast Atlantic: A Systematic Review
(Master thesis; Mastergradsoppgave, 2022-08-20)Despite its long history of exploitation, there is limited information about the spurdog. Therefore, it is important to identify which general and genetic information is available for the species and what is missing to resolve stock structure and advice future management schemes. The goal of this study was to identify the knowledge gaps, in terms of genetic population structure and diversity, which ...
