Blar i Department of Biological Sciences på tittel
Viser treff 1719-1738 av 2512
-
Optimalisering av vektordesign for en mukosal DNA-vaksine mot lakselus (Lepeophtheirus salmonis) i laks (Salmo salar)
(Master thesis, 2023-06-02)Den marine hoppekrepsen Lepeophtheirus salmonis (lakselus) er en blodspisende ektoparasitt som infiserer vill laksefisk, deriblant oppdrettslaks. Lakselusen utgjør det viktigste problemet i oppdrettsnæringen, da skadene ... -
Optimisation of dietary n-3 and n-6 fatty acids for a robust Atlantic salmon (Salmo salar)
(Doctoral thesis, 2022-06-28)An optimal diet for Atlantic salmon (Salmo salar) should promote a healthy fish that is robust to changes in its environmental conditions and can withstand the handling it will encounter under farming conditions, all while ... -
Optimisation of trace mineral supplementation in diets for Atlantic salmon smolt with reference to holistic fish performance in terms of growth, health, welfare, and potential environmental impacts
(Journal article; Peer reviewed, 2023)The aquafeed ingredient inventory is ever changing, from marine to plant based, and recently evolving to incorporate increasing amounts of low trophic, side stream and circular economy based raw materials, each one ... -
Optimising cell wall disruption of microalgae biomass for release of nutrients and bioactive compounds for aquafeed and food applications
(Master thesis, 2019)Microalgae are photosynthetic organisms and primary producers of essential nutrients in the aquatic food chain. Although currently less exploited, microalgae culture can provide nutrients to cover the increasing demand for ... -
Optimization of high-throughput lipid screening of the microalga Nannochloropsis oceanica using BODIPY 505/515
(Journal article; Peer reviewed, 2021-03)Background Microalgae are considered a promising platform for sustainable lipid production. Despite this, productivities need to be improved to facilitate an economically viable production process. This can be achieved ... -
Optimization of Low-Biomass Sample Collection and Quantitative PCR-Based Titration Impact 16S rRNA Microbiome Resolution
(Journal article; Peer reviewed, 2022)The major aquatic interface between host and environment in teleost finfish species is the gill. The diversity of this infraclass, high complexity of the organ, and its direct exposure to the surrounding environment make ... -
Organic carbon and mineral nutrient limitation of oxygen consumption, bacterial growth and efficiency in the Norwegian Sea
(Peer reviewed; Journal article, 2011-01-12)To evaluate the role of bacteria in the transformation of organic matter in subarctic waters, we investigated the effect of mineral nutrients (ammonia and phosphate) and organic carbon (glucose) enrichment on heterotrophic ... -
Organization, transformation, and activation of the melanocortin system in Atlantic salmon
(Doctoral thesis, 2023-11-03)Atlantisk laks (Salmo salar) er en nøkkelart i norsk havbruk. Det trengs imidlertid mer kunnskap og teknologi for å kontinuerlig utvikle mer bærekraftig produksjon, forbedre dyrevelferden og for å øke den økonomiske verdien ... -
Osedax mucofloris (Polychaeta, Siboglinidae), a bone-eating marine worm new to Norway
(Peer reviewed; Journal article, 2010)The bone-eating siboglinid polychaete Osedax mucofloris Glover, Källström, Smith & Dahlgren, 2005 is reported from Norwegian waters for the first time. Dense growth was found on bovine bones deposited at 118 meters depth ... -
Ossification of Atlantic cod (Gadus morhua) – Developmental stages revisited
(Peer reviewed; Journal article, 2017-02)In studies of marine larvae, it is common to use days post-hatch as a developmental reference point. We show that age is a poor measure of morphological and physiological development in Atlantic cod. Therefore, we propose ... -
Otolith growth across two generations in Atlantic herring (Clupea harengus)
(Master thesis, 2018-06-27)The Atlantic herring (Clupea harengus) has a wide distribution and a complex metapopulation structure with interactions between the sub-populations. The sub-populations show different adaptations, both genetic and non-genetic, ... -
Otolith growth of herring (Clupea harengus) and sprat (Sprattus sprattus) in the Norwegian fjords
(Master thesis, 2022-06-01)Small pelagic fish play an important role in the ecosystem and are an important economical resource. The two most abundant pelagic fish in the Norwegian fjords are herring and sprat. It is documented that offshore sprat ... -
Otolith structure as indicator of key life history events in Atlantic cod (Gadus morhua)
(Doctoral thesis, 2018-08-27)Otoliths are remarkable recorders of the individual life history, as they can reflect the growth trajectory and may encapsulate marks related to ontogenetic, physiological and environmental events. Visible and chemical ... -
Otolith “spawning zones” across multiple Atlantic cod populations: Do they accurately record maturity and spawning?
(Journal article; Peer reviewed, 2021)Specific changes identified in the otolith macrostructure of Northeast Arctic cod as “spawning zones” are presumed to represent spawning events, but recent experimental studies have challenged this relationship. Because ... -
Outdoor cycling activity affected by COVID-19 related epidemic-control-decisions
(Journal article; Peer reviewed, 2021-05-06)Aim: The lockdown of sports infrastructure due to the COVID-19 pandemic has substantially shifted people’s physical activity towards public green spaces. With Germany’s lockdown as one of the more severe governmentally ... -
Overlapping transcription initiation codes and promoter interpretation in vertebrate development and differentiation
(Doctoral thesis, 2015-01-05)A core promoter is a minimal region sufficient to direct the accurate initiation of transcription. Various core promoter elements have been discovered that recruit and position transcriptional machinery, which then initiates ... -
Overvåkingsprogram og kompetansehevingstiltak knyttet til vannkvalitet og fiskehelse i marine yngel- og settefiskanlegg (MarinVest)
(NIVA-rapport;6782, Research report, 2015)Prosjektet «Overvåkingsprogram og kompetansehevingstiltak knyttet til vannkvalitet og fiskehelse i marine yngel- og settefiskanlegg (MarinVest)».har blitt utført i samarbeid med industrideltagerne Sterling White Halibut ... -
The oxygen requirement of Atlantic salmon (Salmo salar L.) in the on-growing phase in sea cages
(Doctoral thesis, 2012-10-30)Atlantic salmon aquaculture is a successful and growing industry, with a global production of more than 1.4 million tonnes in 2010. In the on-growing phase, Atlantic salmon are normally kept in sea cages, where both the ... -
Oxygen variation within a seacage
(Master thesis, 2008-06-01)In recent years, fish welfare during aquaculture production has received increasing attention, and it has been suggested that welfare is threatened as larger seacages are developed. Larger seacages with higher stocking ...