Browsing Nord Open Research Archive by Author "Olsvik, Pål Asgeir"
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Associations Between Behavioral Effects of Bisphenol A and DNA Methylation in Zebrafish Embryos
Olsvik, Pål Asgeir; Whatmore, Paul; Penglase, Sam J.; Skjærven, Kaja Helvik; d'Auriac, Marc Anglès; Ellingsen, Ståle (Journal article; Peer reviewed, 2019)Endocrine-disrupting contaminants have been associated with aberrant changes in epigenetic pathways in animals. In this study, zebrafish embryos were exposed bisphenol A (BPA) to search for associations between behavior ... -
Chlorpyrifos-induced dysfunction of lipid metabolism is not restored by supplementation of polyunsaturated fatty acids EPA and ARA in Atlantic salmon liver cells
Olsvik, Pål Asgeir; Hammer, SK; Sanden, Monica; Søfteland, Liv Ingeborg Rosvoll (Journal article; Peer reviewed, 2019)Exposure to contaminants can lead to accumulation of lipids in the liver. This study aimed to examine whether eicosapentaenoic acid (EPA) and arachidonic acid (ARA) supplementation can protect fish cells against the negative ... -
DNA damage and health effects in juvenile haddock (Melanogrammus aeglefinus) exposed to PAHs associated with oil-polluted sediment or produced water
Meier, Sonnich; Karlsen, Ørjan; Le Goff, Jérémie; Sørensen, Lisbet; Sørhus, Elin; Pampanin, Daniela Maria; Donald, Carey E.; Fjelldal, Per Gunnar; Dunaevskaya, Evgenia; Romano, Marta; Caliani, Ilaria; Casini, Silvia; Bogevik, Andre S.; Olsvik, Pål Asgeir; Myers, Mark; Grøsvik, Bjørn Einar (Peer reviewed; Journal article, 2020)The research objective was to study the presence of DNA damages in haddock exposed to petrogenic or pyrogenic polyaromatic hydrocarbons (PAHs) from different sources: 1) extracts of oil produced water (PW), dominated by ... -
Effects of agricultural pesticides in aquafeeds on wild fish feeding on leftover pellets near fish farms
Olsvik, Pål Asgeir; Larsen, Anett Kristin; Berntssen, Marc; Goksøyr, Anders; Karlsen, Odd Andre; Yadetie, Fekadu; Sanden, Monica; Kristensen, Torstein (Journal article; Peer reviewed, 2019) -
Effects of mining chemicals on fish: exposure to tailings containing Lilaflot D817M induces CYP1A transcription in Atlantic salmon smolt
Olsvik, Pål Asgeir; Urke, Henning Andre; Nilsen, Tom Ole; Ulvund, John Birger; Kristensen, Torstein (Journal article; Peer reviewed, 2015) -
Fluorescent Microplastic Uptake by Immune Cells of Atlantic Salmon (Salmo salar L.)
Abihssira Garcia, Isabel Sofia; Park, Youngjin; Viswanath, Kiron; Olsvik, Pål Asgeir (Peer reviewed; Journal article, 2020)The ubiquitous presence of microplastics and their marine ecotoxicity are major public concerns. Microplastics are ingested accidentally by the marine fauna or are taken up indirectly through the food chain. These particles ... -
Imaging flow cytometry protocols for examining phagocytosis of microplastics and bioparticles by immune cells of aquatic animals
Park, Youngjin; Abihssira-García, Isabel S.; Thalmann, Sebastian; Wiegertjes, Geert; Barreda, Daniel; Olsvik, Pål Asgeir; Kiron, Viswanath (Peer reviewed; Journal article, 2020)Imaging flow cytometry (IFC) is a powerful tool which combines flow cytometry with digital microscopy to generate quantitative high-throughput imaging data. Despite various advantages of IFC over standard flow cytometry, ... -
Mixture toxicity of chlorpyrifos-methyl, pirimiphos-methyl, and nonylphenol in Atlantic salmon (Salmo salar) hepatocytes
Olsvik, Pål Asgeir; Søfteland, Liv Ingeborg Rosvoll (Peer reviewed; Journal article, 2020)Pesticide formulations typically contain adjuvants added to enhance the performance of the active ingredient. Adjuvants may modify the bioavailability and toxicity of pesticides. In this study, the aim was to examine to ... -
Recommendations for dietary level of micro-minerals and vitamin D3 to Atlantic salmon (Salmo salar) parr and post-smolt when fed low fish meal diets
Prabhu, P. Antony Jesu; Lock, Erik-Jan; Hemre, Gro-Ingunn; Hamre, Kristin; Espe, Marit; Olsvik, Pål Asgeir; Silva, Joana; Hansen, Ann-Cecilie; Johansen, Johan; Sissener, Nini H.; Waagbø, Rune (Journal article; Peer reviewed, 2019) -
A transcriptomic analysis of diploid and triploid Atlantic salmon lenses with and without cataracts
Olsvik, Pål Asgeir; Finn, Roderick Nigel; Remø, Sofie C.; Fjelldal, Per Gunnar; Chauvigné, Francois; Glover, Kevin; Hansen, Tom Johnny; Waagbø, Rune (Peer reviewed; Journal article, 2020)To avoid negative environmental impacts of escapees and potential inter-breeding with wild populations, the Atlantic salmon farming industry has and continues to extensively test triploid fish that are sterile. However, ...