Blar i Articles på forfatter "Samuelsen, Ole Bent"
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The Acute and Delayed Mortality of the Northern Krill (Meganyctiphanes norvegica) When Exposed to Hydrogen Peroxide
Escobar, Rosa; Samuelsen, Ole Bent (Peer reviewed; Journal article, 2020)Bath treatment pharmaceuticals used to control sea lice infestations in the salmonid industry, such as hydrogen peroxide (H2O2), are released directly into the environment where non-target organisms are at risk of exposure. ... -
Acute toxic effects of hydrogen peroxide, used for salmon lice treatment, on the survival of polychaetes (Capitella sp. and Ophryotrocha spp.)
Fang, Jinghui; Samuelsen, Ole Bent; Strand, Øivind; Jansen, Henrice M (Journal article; Peer reviewed, 2018)The amount of hydrogen peroxide (H2O2) used in the treatment of salmon lice in Norwegian salmon farming increased from 308 tons in 2009 to 43246 tons in 2015. For 2016 and 2017, however, the consumption was reduced to 26597 ... -
Anaesthesia of Atlantic halibut (Hippoglossus hippoglossus) – Effect of pre-anaesthetic sedation, and importance of body weight and water temperature
Zahl, Inger Hilde; Kiessling, Anders; Samuelsen, Ole Bent; Hansen, Magne Kjerulf (Journal article; Peer reviewed, 2010-11-30)The efficacy of the anaesthetic agents benzocaine, metacaine (MS-222), metomidate, 2-phenoxyethanol, quinaldine and isoeugenol was studied in Atlantic halibut (Hippoglossus hippoglossus). Fish with an average body weight ... -
Antibiotic uptake by cultured Atlantic cod leucocytes and effect on intracellular Francisella noatunensis subsp. noatunensis replication
Kaldestad, Marte; Haugland, Gyri T.; Rønneseth, Anita; Wergeland, Heidrun I.; Samuelsen, Ole Bent (Journal article; Peer reviewed, 2014-02-04)The granuloma disease caused by Francisella noatunensis subsp. noatunensis in farmed Atlantic cod has not been successfully treated by use of antibacterials, even when antibacterial resistance testing indicates a sufficient ... -
Antimicrobial susceptibility of Francisella noatunensis subsp. noatunensis strains isolated from Atlantic cod Gadus morhua in Norway
Isachsen, Cecilie Helen; Vågnes, Øivind; Jakobsen, Ragnhild Aakre; Samuelsen, Ole Bent (Journal article; Peer reviewed, 2012-02-17)A total of 30 isolates of Francisella noatunensis subsp. noatunensis isolated from Atlantic cod Gadus morhua L. were tested for susceptibility, in the form of minimal inhibitory concentration (MIC) values, against the ... -
Bath treatment, an alternative method for the administration of the quinolones flumequine and oxolinic acid to halibut Hippoglossus hippoglossus, and in vitro antibacterial activity of the drugs against some Vibrio sp.
Samuelsen, Ole Bent; Lunestad, Bjørn Tore (Journal article; Peer reviewed, 1996-10-17)Administration of flumequine and oxolinic acid to halibut Hippoglossus hippoglossus by bath resulted in significant tissue levels of both the antibacterials. Bath treatment using 150 mg l(-1) of flumequine and 200 mg l(-1) ... -
Changes in plasma and liver glutathione levels in Atlantic salmon Salmo salar suffering from infectious salmon anemia (ISA)
Hjeltnes, Brit K.; Samuelsen, Ole Bent; Svardal, Asbjørn Martin (Journal article; Peer reviewed, 1992-10-08)The levels of reduced glutathione (GSH) in plasma and liver in healthy Atlantic salmon Salmo salar and salmon suffering from infectious salmon anaemia (ISA) were measured using high-performance liquid chromatography (HPLC). ... -
Characterization of strains of Vibrio splendidus and V. tapetis isolated from corkwing wrasse Symphodus melops suffering vibriosis
Jensen, Sigmund; Samuelsen, Ole Bent; Andersen, Kari; Torkildsen, Lise; Lambert, Christophe; Choquet, Gwénaëlle; Paillard, Christine; Bergh, Øivind (Journal article; Peer reviewed, 2003-01-22)Two vibrio bacteria pathogenic to the corkwing wrasse Symphodus melops were isolated. Vibriosis-inducing strain LP1 was isolated as the dominanting bacterium in kidney samples of dead and moribund wrasse from a population ... -
Development of anaesthetic protocols for lumpfish (Cyclopterus lumpus L.): Effect of anaesthetic concentrations, sea water temperature and body weight
Skår, Malene W.; Haugland, Gyri Teien; Powell, Mark; Wergeland, Heidrun Inger; Samuelsen, Ole Bent (Peer reviewed; Journal article, 2017) -
Diseases, prophylaxis and treatment of the Atlantic halibut Hippoglossus hippoglossus: a review
Bergh, Øivind; Nilsen, Frank; Samuelsen, Ole Bent (Journal article; Peer reviewed, 2001)After substantial investments in research, the Atlantic halibut Hippoglossus hippoglossus is now being cultivated commercially in Norway, Iceland, Scotland and Canada. As with other domesticated species, disease problems ... -
Distribution and Persistence of Diflubenzuron and Teflubenzuron in the Marine Environment Around Salmonid Aquaculture Facilities
Parsons, Aoife Elizabeth; Samuelsen, Ole Bent; Johnsen, Ingrid Askeland; Hannisdal, Rita; Tjensvoll, Tore; Husa, Vivian (Peer reviewed; Journal article, 2021)To achieve a sustainable salmonid aquaculture industry, the environmental impacts of chemicals used to treat sea lice (Caligidae) infestations need to be considered. Our ability to assess the risks associated with these ... -
Effect of sea lice chemotherapeutant hydrogen peroxide on the photosynthetic characteristics and bleaching of the coralline alga Lithothamnion soriferum
Legrand, Erwann; Parsons, Aoife Elizabeth; Escobar, Rosa; Freytet, Florian; Agnalt, Ann-Lisbeth; Samuelsen, Ole Bent; Husa, Vivian (Peer reviewed; Journal article, 2022)The proliferation of sea lice (Lepeophtheirus salmonis) represents a major challenge for the salmonid aquaculture industry in Norway. Hydrogen peroxide (H2O2) is a chemotherapeutant frequently used on Norwegian farms, ... -
Efficacy of florfenicol in the treatment of bacterial infections in halibut, Hippoglossus hippoglossus (L.), larvae
Roiha, Irja Sunde; Samuelsen, Ole Bent; Harboe, Torstein (Journal article; Peer reviewed, 2011-10-17) -
Efficacy of Orally Administered Florfenicol in the Treatment of Furunculosis in Atlantic Salmon
Samuelsen, Ole Bent; Hjeltnes, Brit K.; Glette, Johan (Journal article; Peer reviewed, 1998)This study was performed to determine the efficacy of orally administered florfenicol to treat experimentally induced furunculosis in Atlantic salmon Salmo salar held in seawater. A strain of the causative bacterium, ... -
Efficacy of orally administered flumequine in the treatment of vibriosis caused by Listonella anguillarum in Atlantic cod Gadus morhua
Todnem Vik-Mo, Frode; Bergh, Øivind; Samuelsen, Ole Bent (Journal article; Peer reviewed, 2005-11-09)The efficacy of orally administered flumequine in the treatment of experimentally induced vibriosis in Atlantic cod Gadus morhua was investigated. Cod (mean ± SD, 120 ± 30 g) were randomly distributed to twelve tanks and ... -
Efficacy of orally administered oxolinic acid and Vetoquinol, an oxolinic acid ester, for the treatment furunculosis in Atlantic salmon Salmo salar held seawater
Samuelsen, Ole Bent; Hjeltnes, Brit K.; Torkildsen, Lise (Journal article; Peer reviewed, 1999-06-23)This study was performed to determine the efficacy of orally administered oxolinic acid and Vetoquinol, an oxolinic acid ester, in the treatment of experimental induced furunculosis in Atlantic salmon Salmo salar held in ... -
Evaluating bioencapsulation of florfenicol in rotifers (Brachionus plicatilis)
Roiha, Irja Sunde; Otterlei, Erling; Samuelsen, Ole Bent (Journal article; Peer reviewed, 2010-11-11)The rotifer Brachionus plicatilis is one of the most important live-feed organisms used in the larval culture of marine fish. Bioencapsulation of florfenicol in rotifers was investigated by delivering it directly to the ... -
Impact of administering antibacterial agents on wild fish and blue mussels Mytilus edulis in the vicinity of fish farms
Ervik, Arne; Thorsen, B.; Eriksen, V.; Lunestad, Bjørn Tore; Samuelsen, Ole Bent (Journal article; Peer reviewed, 1994-01-27)Using high-performance liquid chromatography, residues of the quinolones oxolinic acid and flumequine have been quantified in muscle of wild fish. The fish were caught 0 or 1 d after terminating medication in the vicinity ... -
The impact of anti-sea lice pesticides, azamethiphos and deltamethrin, on European lobster (Homarus gammarus) larvae in the Norwegian marine environment
Parsons, Aoife Elizabeth; Escobar, Rosa; Sævik, Pål Næverlid; Samuelsen, Ole Bent; Agnalt, Ann-Lisbeth (Peer reviewed; Journal article, 2020)Anti-sea lice pesticides, used in the salmonid aquaculture industry, are a growing environmental concern due to their potential to adversely affect non-target crustaceans. Azamethiphos and deltamethrin are two bath treatment ... -
Modelling chemical releases from fish farms: impact zones, dissolution time, and exposure probability
Sævik, Pål Næverlid; Agnalt, Ann-Lisbeth; Samuelsen, Ole Bent; Myksvoll, Mari Skuggedal (Peer reviewed; Journal article, 2021)Tarpaulin bath treatments are used in open net-pen finfish aquaculture to combat parasitic infections, in particular sea lice. After treatment, the toxic wastewater is released directly into the ocean, potentially harming ...