Norges fiskerihøgskole: Nye registreringer

Viser treff 1201-1220 av 1642

    • From controversy to dialog in aquaculture 

      Karlsen, Kine Mari; Andreassen, Otto; Hersoug, Bjørn (Research report; Forskningsrapport, 2015-07)
      The Norwegian government has great ambitions for growth and development in the Norwegian aquaculture industry. At the same time, the aquaculture industry also encounters significant opposition by different stakeholders and is undoubtedly controversial. The aquaculture industry contributes to regional and social development in the Arctic, and supplies highly demanded seafood. On the other hand, the ...

    • Hva begrenser tilgangen på sjøareal til havbruksnæringen? 

      Hersoug, Bjørn; Andreassen, Otto; Johnsen, Jahn Petter; Robertsen, Roy (Research report; Forskningsrapport, 2014-08-13)
      Prosjektet har hovedfokus på havbruksnæringens lokalitetstilgang sett i lys av økt arealbehov ut fra havbruknæringens ønske om vekst. Denne veksten er ikke uproblematisk, for bruk av kystsonen utfordres av mange interesser og brukerere. De siste årene har bærekraftig utvikling av næringen hatt sterkt fokus, hvor klare miljøutfordringer relatert til påvirkning av villaks, luseproblematikk, forurensing, ...

    • Fettsyresammensetning hos atlantisk laks (Salmo salar L.) fôret med ulike mengder langkjedede omega-3 fettsyrer 

      Evje, Iselin Birthe Stock (Master thesis; Mastergradsoppgave, 2015-05-22)
      Sammendrag Fisk blir anbefalt til humant konsum i hovedsak grunnet det høye innholdet av de langkjedede omega-3 fettsyrene eikosapentaensyre (EPA, 20:5n-3) og dokosaheksaensyre (DHA, 22:6n-3). Disse fettsyrene er utgangspunktet for biologisk aktive molekyler (fettsyrehormoner) som virker dempende på betennelsesreaksjoner (inflammasjon). Vegetabilske oljer inneholder ikke EPA og DHA, men omega-6 ...

    • Blood coagulation time in response to simulated trawling and recovery time of wild Atlantic Cod (Gadus morhua L.) 

      Tichy, Jakub (Master thesis; Mastergradsoppgave, 2015-05-12)
      Wild Atlantic cod (Gadus morhua L.) was used to assess possible effects of different treatments on blood coagulation time, fillet redness and possible correlationship between blood coagulation time and fillet redness by simulating fish capturing and handling activities. During blood coagulation time assessment fish were tested for different treatments simulating commercial fishing operations. Three ...

    • Approach to the 2014 discard ban in the EU Common Fisheries Policy and trials with bycatch reducing trawl techniques 

      Salvo, Ixai (Master thesis; Mastergradsoppgave, 2014-05-22)
      The new Common Fisheries Policy (CFP) proposes a change in the old fisheries regulation of the EU. The aim of this thesis is to give a description of the new regulation with a focus on the discard ban and the landing obligations. Because the use of selectivity devices is crucial on this new regulation, the efficiency of the square mesh window (SMW) as selectivity device was evaluated. The efficiency ...

    • Results based management in fisheries: Delegating responsibility to resource users 

      Nielsen, Kåre Nolde; Holm, Petter; Aschan, Michaela (Journal article; Tidsskriftartikkel; Peer reviewed, 2014-10-31)
      While the notion of results based management has been devoted recent attention in the context of reforming European fisheries management, it remains unclear what it entails. A conceptual model of results based management in fisheries is proposed as a way for public authorities to delegate specific management and documentation responsibilities to resource users. The model comprises three ...

    • A deliberative approach to valuation and precautionary management of cold water corals in Norway 

      Falk-Andersson, Jannike; Foley, Naomi; Armstrong, Claire W.; van den Hove, Sybille; van Rensburg, Thomas; Tinch, Rob (Journal article; Tidsskriftartikkel; Peer reviewed, 2015-06-17)
      This paper explores management challenges in relation to human impacts on cold water corals (CWC) in Norway. CWC are a slow growing organism about which there is uncertainty regarding distribution and values. We discuss area closures to protect this environmental public good against destructive fishing practices. Focus groups were combined with questionnaires to inform precautionary management ...

    • Triploid laks - Produktegenskaper og omdømmeperspektiver 

      Olsen, Terje Antero (Master thesis; Mastergradsoppgave, 2015-05-15)
      Sammendrag Oppdrett av laks har vært en suksesshistorie for Norge. Utviklingen har vært formidabel de siste tiårene fra en produksjon på ca. 46 000 tonn i 1984 til over 1,2 millioner tonn i 2014. Laksenæringen har imidlertid flere utfordringer og en av dem er rømming av laks fra sjøanlegg. Dette gir ikke bare et økonomisk tap for oppdretteren, men kan også føre til at rømt oppdrettslaks blander ...

    • Trans isomers of EPA and DHA in refining and concentration of fish oils. 

      Dalheim, Lars (Master thesis; Mastergradsoppgave, 2015-05-15)
      The omega-3 long-chain polyunsaturated fatty acids (LC-PUFA) eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA) are strongly recommended to be part of a normal diet due to the many positive health effects in humans. Health authorities in many countries recommend an average daily intake of 0.25 – 0.5 grams of EPA and DHA by eating fish at least twice a week or alternatively, consume fish oil ...

    • Effekter av embryonal stressbelastning på utvikling av smoltegenskaper hos Atlantisk laks (Salmo salar) 

      Gustavsen, Lone Ally Sarita Karlsen (Master thesis; Mastergradsoppgave, 2015-02-15)
      I følge Havforskningsinstituttets risikovurdering for norsk fiskeoppdrett 2013 dør nesten 20 % av all smolt som blir satt ut i havet i Norge i perioden fram til slaktemoden størrelse. Dette representerer store tap av verdier for havbruk industrien. Hensikten med mitt forsøk var derfor å studere hvorvidt kulde- og håndteringsstress påført i en tidlig fase (på egg- og plommesekkstadium) hadde en effekt ...

    • En sammenligning av anaerob svømmekapasitet og påfølgende restituering hos diploid og triploid atlantisk torsk (Gadus morhua) 

      Jensen, Tonje Kristin (Master thesis; Mastergradsoppgave, 2015-05-15)
      Diploid fisk er mest utbredt i naturen og har to kromosomsett, mens triploid fisk har tre. Triploid fisk er funksjonelt steril, noe som gjør dem ute av stand til å reprodusere. Triploidisering av oppdrettsfisk gjør det derfor mulig å kontrollere kjønnsmodning, samtidig som risikoen for genetisk interaksjon mellom rømt oppdrettsfisk og villfisk reduseres betydelig eller fjernes helt. Diploid og ...

    • Sustainable Development of Aquaculture on the Volta Lake. A case study of the Asuogyaman District in the Eastern Region of Ghana 

      Odei, Derrick Kwame (Master thesis; Mastergradsoppgave, 2015-05-15)
      Aquaculture in Ghana has been in existence for over 50years. However, it has been less productive despite its high potential for commercial and other scales of production. The Volta Lake presents a huge available resource for the success of cage aquaculture in the country. The cage system of production was introduced in 2001 according to Kasam (2014). This system of aquaculture production even ...

    • The new Common Fisheries Policy and its landing obligation- Implications for governability and legitimacy. A case study of the Scottish mixed roundfish trawl fishery 

      Kolflaath, Bjørnar Siikavuopio (Master thesis; Mastergradsoppgave, 2015-05-18)
      The European Union has been applying a top-down and centralized approach to management of fish stocks to try dealing with the complexity of the marine environment. Since the establishment of the Common Fisheries Policy in 1983 the principle of relative stability has maintained the main resource “conservation” component of the policy, despite all its criticism for being the major driving factor for ...

    • Fluidpermeabelt luseskjørt (SalGardTM) og fiskevelferd i oppdrett av atlantisk laks (Salmo Salar L.) i Nord-Norge 

      Lind, Mattias Bendiksen (Master thesis; Mastergradsoppgave, 2015-05-15)
      Lakseparasitten lakselus (Lepeophtheirus Salmonis) er den største utfordringen norsk oppdrettsnæring i dag står ovenfor. Lakselusproblematikken er i hovedsak knyttet til påvirkning på ville laksestammer. Samtidig utgjør hyppig avlusing og behandling et potensielt fiskevelferdsproblem i lakseoppdrett. Resistensutvikling skaper store utfordringer, med mangel på fullgode metoder for å hindre eller ...

    • A study on the escape rate of Northeast Atlantic cod (Gadus morhua) and haddock (Melanogrammus aeglefinus) under the fishing line with two different ground ropes in the Barents Sea bottom trawl fishery and the influence of some biotic and abiotic factors on the efficiency during bottom trawling 

      Brinkhof, Jesse (Master thesis; Mastergradsoppgave, 2015-05-15)
      The aim of this study was to investigate the escapement under the fishing line for cod (Gadus morhua) and haddock (Melanogrammus aeglefinus) with the conventional rock-hopper gear and a new type of gear termed semicircular spreading gear (SCSG). The trials were conducted during November 2014 and February 2015 in the Barents Sea under varying environmental conditions. In order to catch the escapees ...

    • The role of “green” licences in defining environmental controls in Norwegian salmon aquaculture 

      Nikitina, Ekaterina (Master thesis; Mastergradsoppgave, 2015-05-14)
      The study examines the problem of externalities in the Norwegian aquaculture sector. The two main environmental challenges of Norwegian salmon aquaculture at the moment are the sea lice spread and farmed fish escape. Without dealing with these challenges, no increase in production was possible. At the same time the growth in the output is needed to satisfy the increasing demand for salmon products ...

    • Snow crab (Chionoecetes opilio) in the Barents Sea. Diet, biology and management 

      Hansen, Harald Sakarias Brøvig (Master thesis; Mastergradsoppgave, 2015-05-15)
      This thesis seeks to develop a better understanding of snow crab (Chionoecetes opilio), a nonnative species that has established in the Barents Sea. Very little is known about the species role in the ecosystem, but it can be perceived both as a pest and as a goldmine. It is expected that the population will accommodate a significant fishery. As a non-native benthic crustacean spreading throughout ...

    • Atlantic salmon possesses two clusters of type I interferon receptor genes on different chromosomes, which allows for a larger repertoire of interferon receptors than in zebrafish and mammals 

      Sun, Baojian; Greiner-Tollersrud, Linn; Koop, Ben F; Robertsen, Børre (Journal article; Tidsskriftartikkel; Peer reviewed, 2014)

    • Walking the talk: implementing the international voluntary guidelines for securing sustainable small-scale fisheries 

      Jentoft, Svein (Journal article; Tidsskriftartikkel; Peer reviewed, 2014)

    • Økt lønnsomhet i torskesektoren - Sluttrapport Arbeidspakke 1 - Politiske og institusjonelle samfunnsbindinger 

      Dreyer, Bent; Holm, Petter; Henriksen, Edgar (Research report; Forskningsrapport, 2015)
      Rapporten gir en oversikt over aktivitet og funn i programmet «Økt lønnsomhet i torskesektoren» - Arbeidspakke 1. Programmet ble startet opp i 2011, og Arbeidspakke 1 - Politiske og institusjonelle samfunnsbindinger - var den aktiviteten i programmet som fikk størst oppmerksomhet i oppstartsfasen. Hensikten med denne aktiviteten i programmet var å redegjøre for de eksisterende rammevilkårene – ...