Browsing Department of Biological Sciences by Title
Now showing items 2275-2294 of 2349
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Vaksinering av berggylt (Labrus bergylta) mot Aeromonas salmonicida A-lagstype V og VI
(Master thesis, 2016-06-09)Oppdrettet berggylt brukt som rensefisk for laks ble vaksinert med en divalent vaksine mot Aeromonas salmonicida A-lagstype V og VI. En uvaksinert negativ kontrollgruppe med samme opprinnelse ble fordelt på andre merder i ... -
Validating timing of salmon smolt runs obtained by telemetry studies
(Journal article; Peer reviewed, 2021)Telemetry tags are increasingly used in management to monitor the migration timing of Atlantic salmon smolts (Salmo salar L.). It has been postulated that (1) effects from tagging and handling may alter migration behaviour, ... -
Validation of a species-specific eDNA-based test system for detecting non-indigenous American lobster Homarus americanus
(Master thesis, 2021-11-22) -
Validity of winter sampling for estimation of salmonid abundance by electrofishing
(Journal article; Peer reviewed, 2024)Electrofishing removal sampling is a common method for abundance estimation of juvenile salmonids in streams and is usually performed during autumn. European guidelines specify that sampling should be conducted at water ... -
The value of size. Bioeconomic consequences of size-dependent pricing and fishing-induced evolution
(Doctoral thesis, 2011-09-02)The influence of fishing on the dynamics of fish stocks is a core element in fisheries management. One of the most notable characteristics in this context is the sizestructure of a fish stock, composed by the individual ... -
Vannkvalitet i marin yngelproduksjon
(Research report, 2015) -
Variability in transport of fish eggs and larvae. IV. Interannual variability in larval stage duration of immigrating plaice in the Dutch Wadden Sea
(Peer reviewed; Journal article, 2009-09-18)Larval immigration of plaice Pleuronectes platessa L. into the western Wadden Sea in spring was followed biweekly from 1993 to 2002. For each year (1993 excluded), 150 settling individuals were selected and used for ... -
Variable Number of Tandem Repeats (VNTR) analysis of Flavobacterium psychrophilum from salmonids in Chile and Norway
(Peer reviewed; Journal article, 2015-07-14)Background Flavobacterium psychrophilum causes serious fish diseases such RTFS and BCWD, affecting the aquaculture industry worldwide. Commercial vaccines are not available and control of the disease depends on the use of ... -
Variation in leaf functional traits through the early development of coastal heathland plants
(Master thesis, 2018-12)Seedling recruitment provides a mechanism for re-establishment after fire and is thus key in the life cycle of managed heathland plant species. However, the seedling phase is a vulnerable stage of the plant’s life cycle, ... -
Vegetasjonsendringer i myr og lynghei på Runde i perioden 1928 til 2010
(Master thesis, 2011-06-16)Effektivisering og reformer i landbruket etter andre verdenskrig har ført til at den tradisjonelle bruken av mange kulturlandskap har blitt sterkt redusert. Runde, en øy på kysten av Møre og Romsdal, er et godt eksempel ... -
Vegetation History in a Coastal West Norwegian Mountain: Illuminated by Palynological Analysis and Megafossils
(Master thesis, 2024-06-17) -
Vegetation- memory effects and their association with vegetation resilience in global drylands
(Journal article, 2022)Vegetation memory describes the effect of antecedent environmental and ecological conditions on the present ecosystem state and has been proposed as an important proxy for vegetation resilience. In particular, strong ... -
Vekststudie av Pasteurella sp. isolert fra oppdrettet rognkjeks, Cyclopterus lumpus
(Master thesis, 2016-06-01)Oppdrett av rognkjeks, Cyclopterus lumpus, er en raskt voksende sektor innen akvakultur i Norge. Bruksområdet for kultivert rognkjeks er begrenset til biologisk bekjemping av lakselus ved oppdrett av salmonider. Rognkjeks ... -
Velocity field of the western entrance to the Barents Sea
(Peer reviewed; Journal article, 2004-03-13)By the use of 4-year long records from moored current meters between 71°30′N and 73°30′N of the western entrance to the Barents Sea, the velocity field of the Atlantic inflow is examined. The mean velocity field shows the ... -
The vertebrate Aqp14 water channel is a neuropeptide-regulated polytransporter
(Peer reviewed; Journal article, 2019-12-11)Water channels (aquaporins) were originally discovered in mammals with fourteen subfamilies now identified (AQP0-13). Here we show that a functional Aqp14 subfamily phylogenetically related to AQP4-type channels exists in ... -
Vertebrate Vitellogenin Gene Duplication in Relation to the ‘‘3R Hypothesis’’: Correlation to the Pelagic Egg and the Oceanic Radiation of Teleosts
(Peer reviewed; Journal article, 2007)The spiny ray-finned teleost fishes (Acanthomorpha) are the most successful group of vertebrates in terms of species diversity. Their meteoric radiation and speciation in the oceans during the late Cretaceous and Eocene ... -
Vertical distribution and migration of mesopelagic scatterers in four north Atlantic basins
(Journal article; Peer reviewed, 2020)We studied vertical distribution and diel vertical migration (DVM) behaviour of mesopelagic acoustic scattering layers in relation to environmental conditions in the Norwegian Sea, the Iceland Sea, the Irminger Sea, and ... -
Vertical distribution and trophic interactions of zooplankton and fish in Masfjorden, Norway
(Peer reviewed; Journal article, 1990)The distribution, biomass, and predator-prey relationships of the pelagic assemblage in Masfjorden, western Norway, was studied in January 1989. The pelagic biomass was dominated by particulate organic matter. Biomasses ... -
Vertical distribution of epibenthic megafauna of a large seamount west of Cape Verde islands (tropical North Atlantic)
(Journal article; Peer reviewed, 2024)Seamounts are thought to function as hotspots of megafauna diversity due to their topology and environmental characteristics. However, assessments of megafauna communities inhabiting seamounts, including diversity and ... -
Vertical salmon lice behaviour as a response to environmental conditions and its influence on regional dispersion in a fjord system
(Peer reviewed; Journal article, 2014)The salmon louse Lepeophtheirus salmonis is a major parasite of salmon, and is able to travel between farms during its pelagic phases. We investigated the spatial dispersion of L. salmonis planktonic stages in the ...