Norges fiskerihøgskole: Recent submissions
Now showing items 241-260 of 1746
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"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 ... -
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 ... -
Markedsundersøkelse: Norsk varmrøkt laks til Japan
(Master thesis; Mastergradsoppgave, 2021-11-16)min studie vil jeg se på muligheten for å introdusere et nytt lakseprodukt til Japan, Varmrøykt laks. Varmrøkt laks ble valgt som utgangspunkt fordi dette er et bearbeidet lakseprodukt som antatt hadde ingen eller lite anerkjennelse i Japan. Ved å introdusere et bearbeidet lakseprodukt ingen hadde noe forhold til og deretter måle oppfatning av dette produktet, kunne man si noe om mulighetene for ... -
[EFFECT OF CROWDING ON BEHAVIOUR OF ATLANTIC SALMON (Salmo salar) IN AQUACULTURE] [Using behaviour as a tool to assess welfare in Atlantic salmon aquaculture production]
(Master thesis; Mastergradsoppgave, 2022-10-20)Aquaculture productions are increasing worldwide and producers are concerned about the welfare of farmed fish. The importance of good welfare cannot be overemphasized throughout the production cycle as each stage has risks and as such must be closely monitored. In this study, a literature review of animal and fish welfare and behaviour was done with special emphasis on the behaviour of Atlantic ... -
Assessing the conditions for compliance in the squid light fisheries in Myeik, Myanmar
(Master thesis; Mastergradsoppgave, 2022-09-05)Light fishing is one of the most advanced and successful methods in several fisheries worldwide. Light fishing operations in Myanmar involve using light luring methods in inshore and offshore fisheries, especially for catching squids and pelagic fishes in squid seine (stick-held falling net) and purse seine vessels. Technological advancements have led fishers to use more power, light intensity, and ... -
The effect of microplastic on natural transformation and biofilm formation using Acinetobacter baylyi as a model organism
(Master thesis; Mastergradsoppgave, 2022-05-15)Microplastic pollution is a big and rapidly increasing environmental problem in the world. Although the direct effects of microplastic pollution are well-studied the indirect effects are hardly investigated, especially in the context of spreading antibiotic resistance genes. Antibiotic resistance is a natural phenomenon, but the misuse and overuse of antibiotics has led to a rapid development and ... -
Effect of omega 3 fatty acid on growth in Atlantic salmon (Salmo salar) aquaculture
(Master thesis; Mastergradsoppgave, 2022-06-15)Background: The effect of diet on fatty acids in Atlantic salmon, particularly omega-3 long-chain polyunsaturated fatty acids (n-3 LC PUFA), has been understudied due to lack of marine raw materials (fish meal and fish oil). A variety of ingredients are used as replacements for fish meal for Atlantic salmon. The aim of this systematic literature review (SLR) is examining the effect of omega 3 fatty ... -
First Steps Towards RAT: A Protocol for Documenting Data Use in the Agent-Based Modeling Process
(Chapter; Bokkapittel, 2021)While there is a number of frameworks and protocols in Agent-Based Modeling (ABM) that support the documentation of different aspects of a simulation study, it is surprising to find only a small number dealing with the handling of data. Here we present the results of discussions we had on the topic at the Lorentz Center workshop on Integrating Qualitative and Quantitative Evidence using Social ... -
Ultrasonic imaging as a means of monitoring gonadal development in lumpfish (Cyclopterus lumpus)
(Journal article; Tidsskriftartikkel; Peer reviewed, 2023-09-21)The commercial farming of juvenile lumpfish requires monitoring of gonadal development to achieve synchronized production. Conventional methods such as gonadosomatic index (GSI), sex hormone analyses, gonadal histology, endoscopy, and gene expression analyses are costly, invasive, and often involve sacrificing the fish. We assessed the efficiency of ultrasound as a non-invasive method for monitoring ... -
Trapped in the TAC Machine: Making a Fisheries-Based Indicator System for Coastal Cod in Steigen, Norway
(Chapter; Bokkapittel, 2020)The GAP project is concerned with the lack of stakeholder participation in providing knowledge for management. This creates a legitimacy problem as the fishermen do not get to share the knowledge basis for and justification of management decisions. In addition, fishermen’s experience-based knowledge remains unused. GAP intends to bridge the legitimacy and knowledge gaps, finding practical ways for ... -
Bridging the Gap: Experiments in the Heart of the Transition Zone
(Chapter; Bokkapittel, 2020)This book is about the on-going transition of fisheries governance and the emergence of research practices and advice frameworks that allow for the co-creation of common knowledge bases for management. This chapter introduces the context under which the GAP project (‘Bridging the gap between science and stakeholders') was conceived, describes its overall approach, orientates the reader to key issues ...