English
norskBlar i tittel Norges fiskerihøgskole
Viser treff 1445-1464 av 1576
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Temperature-dependent lipid accumulation in the polar marine microalga Chlamydomonas malina RCC2488
(Journal article; Tidsskriftartikkel; Peer reviewed, 2020-12-23)The exploration of cold-adapted microalgae offers a wide range of biotechnological applications that can be used for human, animal, and environmental benefits in colder climates. Previously, when the polar marine microalga <i>Chlamydomonas malina</i> RCC2488 was cultivated under both nitrogen replete and depleted conditions at 8°C, it accumulated lipids and carbohydrates (up to 32 and 49%, respectively), ... -
Temporal patterns in the soundscape of a Norwegian gateway to the Arctic
(Journal article; Tidsskriftartikkel; Peer reviewed, 2022-05-10)As an Arctic gateway, the Norwegian Sea sustains a rich diversity of seasonal and resident species of soniferous animals, vulnerable to the efects of climate change and anthropogenic activities. We show the occurrence of seasonal patterns of acoustic signals in a small canyon of Northern Norway, and investigate cetacean vocal behavior, human-made noise, and climatic contributions to underwater ... -
Temporale forskjeller i reproduksjonsutvikling hos to morfer av røye (Salvelinus alpinus). En studie av litoral og profundal røye i Skogsfjordvatn, Troms.
(Master thesis; Mastergradsoppgave, 2013-05-15)Sympatriske morfer av litoral- og profundal røye (Salvelinus alpinus) fra Skogsfjordvatn, Troms (70°N) ble undersøkt for å finne temporale forskjeller i reproduksjonsutviklingen. Feltarbeidet pågikk høsten 2011 hvor fisken ble samplet for blod og gonadeprodukter hver måned fra august til og med desember. Blodplasma ble analysert for steroide kjønnshormoner (Estradiol-17β (E2) og 11-ketotestosteron ... -
Terra nullius, Inuit Habitation and Norse Occupation with Special Emphasis on the 1933 East Greenland Case
(Journal article; Tidsskriftartikkel; Peer reviewed, 2016-05)Sovereignty acquired by occupation entails “recognize[d] title based on discovery,” “a reasonable period [of] … effective occupation of the region claimed to be discovered” and “the continuous and peaceful display of State authority.” Only terra nullius is subject to occupation. A territory inhabited by indigenous groups that sustain social and political organization may impede an occupying power ... -
Testing a size sorting grid in the brown shrimp (Crangon Crangon Linnaeus, 1758) beam trawl fishery
(Journal article; Tidsskriftartikkel, 2020-08-12)The North Sea brown shrimp (<i>Crangon crangon</i> Linnaeus, 1758) fishery became Marine Stewardship Council (MSC) certified in 2017. As part of the certification, the fishermen proposed to incrementally increase the mesh size of the codend used from 22 mm to 26 mm. As this increase in mesh size could result in a substantial loss of marketable sized brown shrimp (shrimp with total length equal or ... -
Testing of hook sizes and appendages to reduce yelloweye rockfish bycatch in a Pacific halibut longline fishery
(Journal article; Tidsskriftartikkel; Peer reviewed, 2023-06-03)In Pacific halibut (Hippoglossus stenolepis) longline fisheries in the eastern North Pacific Ocean bycatch of yelloweye rockfish (Sebastes ruberrimus) is a concern as their stock status along the U.S. West Coast is “rebuilding” from being “overfished”, the southeast Alaska stock has shown a ∼60% decline since at least 1994 and through 2015 where it stabilized, and the Canadian stock has been recently ... -
Testing the Farm-Retail Price Transmission for Norwegian Salmon Exports to France
(Master thesis; Mastergradsoppgave, 2007-06-06)This thesis has tested the Farm-Retail price transmission for Norwegian salmon exports to France. By the use of public data for farm level price in Norway, export level price in Norway, retail level price in France, transportation costs and currency exchange rates the price transmission for the Norway-France value chain has been investigated. Tests of asymmetric price transmission were also conducted. ... -
Th17 master transcription factors RORα and RORγ regulate the expression of IL-17C, IL-17D and IL-17F in Cynoglossus semilaevis
(Journal article; Tidsskriftartikkel; Peer reviewed, 2015-11-10)The RAR-related orphan receptors (RORs) are members of the nuclear receptor family of intracellular transcription factors. In this study, we examined the regulatory properties of RORα (CsRORα) and RORγ (CsRORγ) in tongue sole (Cynoglossus semilaevis). CsRORα and CsRORγ expression was detected in major lymphoid organs and altered to significant extents after bacterial and viral infection. CsRORα ... -
Thee level of eicosapentaenoic (EPA),but not docosahexaenoic acid (DHA) is related to formulation and concentration of EPA and DHA in feed
(Journal article; Tidsskriftartikkel; Peer reviewed, 2020-04-22)The present study investigated how the concentration of PUFA in blood and muscle of Atlantic salmon (<i>Salmo salar</i> L.) changed when fed 4 diets containing very different amounts of LC-PUFA in fresh water for 84 days. The n-3 LC-PUFA constituted 4.4, 24.2, 18.4, and 51.5% of the total fatty acids in the diets made with rapeseed oil, anchoveta oil, a combination of rapeseed oil (60%) and anchoveta ... -
Thermal injuries in Atlantic salmon in a pilot Laboratory trial
(Journal article; Tidsskriftartikkel; Peer reviewed, 2019-09-27)Thermal delousing is a new method for removing sea lice from farmed Atlantic salmon (<i>Salmo salar</i> L). We investigated thermally-related tissue injuries in Atlantic salmon in a pilot laboratory trial to describe the acute effect of high water temperatures (34–38 °C). Acute tissue injuries in gills, eyes, brain and possible also nasal cavity and thymus were seen in salmon exposed to water ... -
Tilfredshet, intensjonslojalitet og betalingsvillighet for fersk sei i Spania. Betydningen av produktegenskaper, individuelle trekk og kjøpsstiler
(Master thesis; Mastergradsoppgave, 2019-06-21)Sei er et kjent og kjært produkt for oss nordmenn, og er vel så populært som torsk til middagsmat. Det meste av seien brukes til produksjon av klippfisk og tørrfisk, mens noe selges i norske butikker som fileter, hel fisk eller frosne fileter. I de internasjonale markedene er det derimot ikke vanlig å finne sei i ferskvaredisker. Spania er blant de landene som spiser mest fisk årlig og verdsetter ... -
To denoise or to cluster, that is not the question: optimizing pipelines for COI metabarcoding and metaphylogeography
(Journal article; Tidsskriftartikkel; Peer reviewed, 2021-04-05)<i>Background</i> - The recent blooming of metabarcoding applications to biodiversity studies comes with some relevant methodological debates. One such issue concerns the treatment of reads by denoising or by clustering methods, which have been wrongly presented as alternatives. It has also been suggested that denoised sequence variants should replace clusters as the basic unit of metabarcoding ... -
To tell or not to tell: Preference elicitation with and without emphasis on scientific uncertainty
(Journal article; Tidsskriftartikkel; Peer reviewed, 2023-05-01)Decisions about the optimal use of coastal and marine resources must be taken under high uncertainty about environmental impacts and may conflict with public perception of the risk associated with current blue growth initiatives. In a discrete choice experiment conducted in valuation workshops in five communities in Arctic Norway, we examine public preferences for various aquaculture expansion paths. ... -
Torsk fanget på ulike tider av året. Vekt- og kvalitetsendringer når torsken levendelagres uten fôring
(Master thesis; Mastergradsoppgave, 2016-05-18)Torskefiskerier har gjennom alle tider vært en viktig næring i Norge. De store sesongvariasjonene i tilgang på ferskt råstoff er utfordrende, og fiskerinæringen har begynt å se seg om etter løsninger på denne utfordringen. Ved å fange torsk levende og sette den i merd får hvitfisknæringen muligheten forlenge sesongen, planlegge produksjonen og binde seg til langsiktige kontrakter på levering av ... -
Torsk fra merd: Pre-rigor produksjon av loins med skinn
(Research report; Forskningsrapport, 2009-03)I dette forsøket ble torsk fanget levende og lagret i merd hvor den ble fôret med hhv. lodde og kommersielt torskefôr i 3 måneder. Etter skånsom slakting og utblødning i 30 minutter, ble fisken sløyd og de biologiske data registrert før maskinell filetering enten pre-rigor (innen 2 timer etter død) og post-rigor (etter 4 dagers is-lagring av sløyd fisk). Det ble produsert ryggfileter (Loins) enten ... -
Torsk og sild på samme kjøl. En studie av den store kystflåtens driftstilpasning
(Master thesis; Mastergradsoppgave, 2006-06-12)Gjennom denne oppgaven har jeg ut fra de gitte rammer undersøkt om den store kystflåten kan oppnå merverdi ved å tilpasse driften sin rundt en mer spesialisert driftsform. Med en mer spesialisert driftsform menes i denne sammenhengen, en innsats i fiske som rettes mot mer ensartede fiskeslag, og fartøyer som er utrustet for fiske med færre redskapsformer. Fordi næringen er så sammensatt har jeg ... -
Total Catch of a Red-Listed Marine Species Is an Order of Magnitude Higher than Official Data
(Journal article; Tidsskriftartikkel; Peer reviewed, 2012)Accurate information on total catch and effort is essential for successful fisheries management. Officially reported landings, however, may be underestimates of total catch in many fisheries. We investigated the fishery for the nationally red-listed European lobster (Homarus gammarus) in south-eastern Norway. Probability-based strip transect surveys were used to count buoys in the study area in ... -
Tourism in Marine Protected Areas: A view from Nha Trang Bay, Vietnam
(Journal article; Tidsskriftartikkel; Peer reviewed, 2019-12-25)Tourism development is considered a key accompanying strategy in creating alternative livelihood options for the communities living in and adjacent to the Marine Protected Areas. This paper examines the socioeconomic characteristics of the Nha Trang Bay protected area to determine the factors that influence the decision to participate in tourism sectors, and analyse whether these decisions would ... -
Tourism in marine protected areas: Can it be considered as an alternative livelihood for local communities?
(Journal article; Tidsskriftartikkel; Peer reviewed, 2020-03-03)The promotion of tourism has been considered to be a key strategy in reducing people's dependence on marine resources and for creating alternative livelihoods for the communities living in Marine Protected Areas (MPAs). This paper studies the determinants for the decision of participation in tourism-related activities and examines whether tourism could be regarded as an alternative livelihood for ... -
Tourist motivation and activities : a case study of Nha Trang, Vietnam
(Master thesis; Mastergradsoppgave, 2010-05-17)The study investigates tourist’s motivation with a segmentation approach in order to give an understanding of the theory of motivation in general and the motivation factors influencing consumer decision making in a tourism context in particular. The segmentation based on motivation, which was supported by a factor-cluster analysis, was carried out on a primary survey of 446 international tourists ...
