Browsing Articles by Title
Now showing items 2949-2968 of 3016
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Vertical distribution of fish and krill beneath water of varying optical properties
(Journal article; Peer reviewed, 1996-06-06)The distribution of acoustical scattering layers of fish and krill changed markedly in concert with fluctuating fluorescence (chlorophyll a) in upper waters, possibly due to a varying 'shadow effect'. Beneath clear waters ... -
Vertical distribution of inorganic nanoparticles in a Norwegian fjord
(Peer reviewed; Journal article, 2023)Due to the analytical challenges of detecting and quantifying nanoparticles in seawater, the data on distributions of NPs in the marine environment is limited to qualitative studies or by ensemble measurements subject to ... -
Vertical distribution, behavior, chemical composition and metabolism of Stauroteuthis syrtensis (Octopoda: Cirrata) in the northwest Atlantic
(Journal article; Peer reviewed, 2009-02-03)The cirrate octopod Stauroteuthis syrtensis is a mesopelagic species commonly collected in the North Atlantic. Individuals were observed at depths >600 m and typically within 100 m of the bottom in three ~900 m deep canyons ... -
Vertical dynamics and reproductive behaviour of farmed and wild Atlantic cod Gadus morhua
(Journal article; Peer reviewed, 2009-09-04)Rapid development of fish mariculture and efforts to restock depleted populations have raised concerns about the effects on wild populations and the risk of genetic introgression from hybridisation. Reproduction of many ... -
Vertical dynamics and reproductive behaviour of farmed and wild Atlantic cod Gadus morhua
(Journal article; Peer reviewed, 2009-09-04)Rapid development of fish mariculture and efforts to restock depleted populations have raised concerns about the effects on wild populations and the risk of genetic introgression from hybridisation. Reproduction of many ... -
Vertical dynamics and reproductive behaviour of farmed and wild Atlantic cod Gadus morhua
(Journal article; Peer reviewed, 2009-09-04)Rapid development of fish mariculture and efforts to restock depleted populations have raised concerns about the effects on wild populations and the risk of genetic introgression from hybridisation. Reproduction of many ... -
Vertical migration in adult Atlantic cod (Gadus morhua)
(Journal article; Peer reviewed, 2007-11-21)We investigate the trade-offs associated with vertical migration and swimming speed of Atlantic cod (Gadus morhua) using an adaptive individual-based model. Simulations with varying distribution and occurrence of prey, ... -
Vertical migrations of a deep-sea fish and its prey
(Journal article; Peer reviewed, 2014-05-23)It has been speculated that some deep-sea fishes can display large vertical migrations and likely doing so to explore the full suite of benthopelagic food resources, especially the pelagic organisms of the deep scattering ... -
Vertical salmon lice behaviour as a response to environmental conditions and its influence on regional dispersion in a fjord system
(Journal article; Peer reviewed, 2014-06-04)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 ... -
Veterinary drug use in United States net pen Salmon aquaculture: Implications for drug use policy
(Peer reviewed; Journal article, 2020)Aquaculture now produces nearly half of the seafood consumed globally. Atlantic salmon (Salmo salar) is one of the top aquaculture products and the most valuable farmed marine finfish species in the United States (U.S.). ... -
Vgll3 and the Hippo pathway are regulated in Sertoli cells upon entry and during puberty in Atlantic salmon testis
(Journal article; Peer reviewed, 2018)Vgll3 is linked to age at maturity in Atlantic salmon (Salmo salar). However, the molecular mechanisms involving Vgll3 in controlling timing of puberty as well as relevant tissue and cell types are currently unknown. Vgll3 ... -
Vibrio tapetis-like strain isolated from introduced Manila clams Ruditapes philippinarum showing symptoms of brown ring disease in Norway
(Journal article; Peer reviewed, 2008-08-27)The Manila clam Ruditapes philippinarum was introduced to Norway in 1987 and was produced in 2 hatcheries until 1991. Clam seed was planted at 6 sites. Two sites were on the Island of Tysnes, south of Bergen. Surviving ... -
Vibrios from the Norwegian marine environment: Characterization of associated antibiotic resistance and virulence genes
(Peer reviewed; Journal article, 2020) -
Video Image Enhancement and Machine Learning Pipeline for Underwater Animal Detection and Classification at Cabled Observatories
(Peer reviewed; Journal article, 2020)An understanding of marine ecosystems and their biodiversity is relevant to sustainable use of the goods and services they offer. Since marine areas host complex ecosystems, it is important to develop spatially widespread ... -
Viral and bacterial diseases of Atlantic cod Gadus morhua, their prophylaxis and treatment: a review
(Journal article; Peer reviewed, 2006-08-30)This review summarises the state of knowledge of both viral and bacterial diseases of Atlantic cod Gadus morhua, and their diagnosis, prophylaxis and treatment. The most important losses have been at the larval and ... -
Viral encephalopathy and retinopathy (VER) in Atlantic salmon Salmo salar after intraperitoneal challenge with a nodavirus from Atlantic halibut Hippoglossus hippoglossus
(Journal article; Peer reviewed, 2005-12-30)Homogenate of tissue from juveniles of Atlantic halibut Hippoglossus hippoglossus suffering from viral encephalopathy and retinopathy (VER) was used to challenge smolt of Atlantic salmon Salmo salar with an initial average ... -
Viral Haemorrhagic Septicemia Virus (VHSV) Isolated from Atlantic Herring, Clupea harengus, Causes Mortality in Bath Challenge on Juvenile Herring
(Peer reviewed; Journal article, 2023)Viral hemorrhagic septicaemia virus (VHSV) has been demonstrated to cause high mortalities in a wide range of teleosts, farmed as well as wild. In Europe, VHSV of genotypes Ib, Id, II, and III have been detected in wild ... -
Visual predation by the euphausiid Meganyctiphanes norvegica
(Journal article; Peer reviewed, 2001-01-05)Experiments showed that Meganyctiphanes norvegica are visual predators on copepods. Adult M. norvegica were offered a mixture of equal numbers of late stage Calanus spp. and Metridia longa in total darkness and at a light ... -
Visual predation risk and spatial distributions of large Arctic copepods along gradients of sea ice and bottom depth
(Peer reviewed; Journal article, 2023)Changes in the community size structure of Arctic copepods toward smaller and less fat individuals or species have been linked to environmental changes. The underpinning mechanisms are, however, poorly understood. We use ... -
Vitality as a measure of animal welfare during purse seine pumping related crowding of Atlantic mackerel (Scomber scrombrus)
(Peer reviewed; Journal article, 2022)The impacts of wild capture fishing on animal welfare are poorly understood. During purse seine fishing for Atlantic mackerel (Scomber scrombrus), catches are crowded to high densities to facilitate pumping onboard. This ...