Browsing NTNU Open by Author "Hansen, Bjørn Henrik"
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A Crude Awakening: Effects of Crude Oil on Lipid Metabolism in Calanoid Copepods Terminating Diapause
Skottene, Elise; Tarrant, Ann; Olsen, Anders; Altin, Dag; Hansen, Bjørn Henrik; Choquet, Marvin; Olsen, Rolf Erik; Jenssen, Bjørn Munro (Journal article; Peer reviewed, 2019)Calanus finmarchicus and Calanus glacialis are keystone zooplankton species in North Atlantic and Arctic marine ecosystems because they form a link in the trophic transfer of nutritious lipids from phytoplankton to predators ... -
Acute and physical effects of water-based drilling mud in the marine copepod Calanus finmarchicus
Farkas, Julia; Yvonne Bådsvik, Camilla; Altin, Dag; Nordtug, Trond; Olsen, Anders Johny; Hansen, Bjørn Henrik (Journal article; Peer reviewed, 2017)The aim of this study was to investigate impacts of fine particulate fraction of a commonly used barite-containing drilling mud on the pelagic filter feeding copepod Calanus finmarchicus. The results show that the tested ... -
Acute hydrogen peroxide (H2O2) exposure does not cause oxidative stress in late-copepodite stage of Calanus finmarchicus
Hansen, Bjørn Henrik; Hallmann, Anna; Altin, Dag; Jenssen, Bjørn Munro; Ciesielski, Tomasz Maciej (Journal article; Peer reviewed, 2017)Use of hydrogen peroxide (H2O2) for removal of salmon lice in the aquaculture industry has created concern that non-target organisms might be affected during treatment scenarios. The aim of the present study was to examine ... -
Acute Toxicity and Stress Gene Transcription in Two Copepod Species (Calanus finmarchicus and Calanus glacialis) Exposed to Fresh Crude Oil WSF
Rørvik, Siv Fiske (Master thesis, 2011)Increasing oil activities from the gas and oil industry may constitute a hazard towards the marine environment due to potential risks for accidents, such as oil spills. This study examine acute eects on mortality (LC50) ... -
Atlantic cod (Gadus morhua) embryos are highly sensitive to short-term 3,4-dichloroaniline exposure
Hansen, Bjørn Henrik; Farkas, Julia; Piarulli, Stefania; Vicario, Silvia; Kvæstad, Bjarne; Williamson, David Roddan; Sørensen, Lisbet; Davies, Emlyn John; Nordtug, Trond (Peer reviewed; Journal article, 2021)3,4-dichloroaniline (3,4-DCA) is one of the most widely produced anilines world-wide, used in plastic packaging, fabrics, pharmaceuticals, pesticides, dyes and paints as well as being a degradation product of several ... -
Automated monitoring of the early life stages of fish
Williamson, David R. (Doctoral theses at NTNU;2024:375, Doctoral thesis, 2024)FISH are one of the most abundant animals on the planet, and hugely important to both aquatic and terrestrial ecosystems. They are also a vital food source to many human communities, and the focus of a vast industry of ... -
Biodegradation-mediated alterations in acute toxicity of water-accommodated fraction and single crude oil components in cold seawater
Brakstad, Odd Gunnar; Størseth, Trond Røvik; Rønsberg, Marianne Unaas; Hansen, Bjørn Henrik (Journal article; Peer reviewed, 2018)Hydrocarbon biodegradation may be slower in cold Arctic than in temperate seawater, and this will affect the toxicity time window of the hydrocarbons. In this study, the acute toxicities of water-soluble phases of ... -
Can lipidomics help identifying egg quality in ballan wrasse?
Malzahn, Arne; Sarno, Antonio; Hagemann, Andreas; Farkas, Julia; Musialak, Luciana Alves; Kjørsvik, Elin; Hansen, Bjørn Henrik (Peer reviewed; Journal article, 2022)Ballan wrasse (Labrus bergylta) is in the limelight of aquaculture research due to the species role as cleaner fish in salmon aquaculture. A major drawback is that the salmon industry still depends on wild caught fish as ... -
Combined effects of exposure to engineered silver nanoparticles and the water-soluble fraction of crude oil in the marine copepod Calanus finmarchicus
Farkas, Julia; Cappadona, V; Olsen, Anders Johny; Hansen, Bjørn Henrik; Posch, Wilfried; Ciesielski, Tomasz Maciej; Goodhead, Rhys; Wilflingseder, Doris; Blatzer, M; Altin, Dag; Moger, Julian; Booth, Andrew; Jenssen, Bjørn Munro (Peer reviewed; Journal article, 2020)While it is likely that ENPs may occur together with other contaminants in nature, the combined effects of exposure to both ENPs and environmental contaminants are not studied sufficiently. In this study, we investigated ... -
Degumming of Ballan wrasse (Labrus bergylta) eggs
Shabbir, Fahad (Master thesis, 2022)Etterspørselen etter berggylt (Labrus bergylta) har økt gjennom årene på grunn av dens effektivitet som rensefisk for å fjerne lakselus (Lepeophtheirus salmonis) fra oppdrettslaks (Salmo salar) i merder. En av utfordringene ... -
Determination of C0‐C9 alkyl phenols in produced water‐exposed fish eggs using gas chromatography tandem mass spectrometry
Oppegård, Martin; Hansen, Bjørn Henrik; Sørensen, Lisbet (Peer reviewed; Journal article, 2020)Rationale Produced water (PW) discharge from the oil and gas industry represents the largest intentional marine waste volume. Alkyl phenols (APs) are one of the main toxic component groups found in PW, with concentration ... -
Developmental effects in fish embryos exposed to oil dispersions – the impact of crude oil micro-droplets
Hansen, Bjørn Henrik; Salaberria, Iurgi; Read, Kari; Wold, Per-Arvid; Hammer, Karen Marie; Olsen, Anders Johny; Altin, Dag; Øverjordet, Ida Beathe; Nordtug, Trond; Bardal, Tora; Kjørsvik, Elin (Journal article; Peer reviewed, 2019)During accidental crude oil spills and permitted discharges of produced water into the marine environment, a large fraction of naturally occurring oil components will be contained in micron-sized oil droplets. Toxicity is ... -
Do oil droplets and chemical dispersants contribute to uptake of oil compounds and toxicity of crude oil dispersions in cold-water copepods?
Hansen, Bjørn Henrik; Altin, Dag; Nordtug, Trond (Journal article; Peer reviewed, 2023)Accidental crude oil spills to the marine environment cause dispersion of oil into the water column through the actions of breaking waves, a process that can be facilitated using chemical dispersants. Oil dispersions contain ... -
Effects of broodstock diets on egg quality of captive lumpfish (Cyclopterus lumpus L.) compared to egg quality of wild caught lumpfish
Rye, Rebecca Zhichao (Master thesis, 2022)Bruken av rensefisk som en biologisk kontroll for å bekjempe lakselus (Salmo salar L.) i norsk havbruksnæring har økt, ettersom at lakselus har blitt resistente mot flere kjemiske behandlingsformer. I dag utgjør rognkjeksen ... -
Effects of Exposure Timing on cyp1a Expression, PAH Elimination, and Lipid Utilization in Lumpfish Embryos Exposed to Produced Water
Hansen, Bjørn Henrik; Arukwe, Augustine Ebeku; Knutsen, Hannah Marie; Skarpnord, Kaja Skyrud; Farkas, Julia; Veylit, Lara; Nepstad, Raymond; Khan, Essa Ahsan; Nordtug, Trond; Sørensen, Lisbet (Peer reviewed; Journal article, 2023)Intentional discharges of produced water from oil production platforms to the marine environment contain a complex mixture of toxicants, including polycyclic aromatic hydrocarbons (PAHs). Early life stages of fish are ... -
Effects of gadolinium (Gd) and a Gd-based contrast agent (GBCA) on early life stages of zebrafish (Danio rerio)
Piarulli, Stefania; Riedel, Juliane Annemieke; Fossum, Frida Nonstad; Kermen, Florence; Hansen, Bjørn Henrik; Kvæstad, Bjarne; Olsvik, Pål Asgeir; Farkas, Julia (Peer reviewed; Journal article, 2023)Gadolinium (Gd) is one of the rare earth elements (REY) and is widely used in magnetic resonance imaging (MRI) contrast agents. Anthropogenic Gd enrichment has frequently been found in wastewater treatment plant effluents ... -
Effects of marine mine tailing exposure on the development, growth, and lipid accumulation in Calanus finmarchicus
Svendheim, Linn Hjelmeland; Jager, Tjalling; Olsvik, Pål Asgeir; Øverjordet, Ida Beathe; Ciesielski, Tomasz Maciej; Nordtug, Trond; Kristensen, Torstein; Hansen, Bjørn Henrik; Kvæstad, Bjarne; Altin, Dag; Farkas, Julia (Journal article; Peer reviewed, 2021)Marine tailing disposal (MTD) is sometimes practiced as an alternative to traditional mine tailing deposition on land. Environmental challenges connected to MTD include spreading of fine particulate matter in the water ... -
Effects of mine tailing exposure on early life stages of cod (Gadus morhua) and haddock (Melanogrammus aeglefinus)
Farkas, Julia; Nordtug, Trond; Svendheim, Linn Hjelmeland; D Amico, Elettra; Davies, Emlyn John; Ciesielski, Tomasz Maciej; Jensen, Bjørn Munro; Kristensen, Torstein; Olsvik, Pål Asgeir; Hansen, Bjørn Henrik (Peer reviewed; Journal article, 2021)Mining and processing of minerals produce large quantities of tailings as waste. Some countries, including Norway, allow disposal of mine tailings in the sea. In this study we investigated the impacts of tailings from a ... -
Effects of petrogenic pollutants on North Atlantic and Arctic Calanus copepods: From molecular mechanisms to population impacts
Hansen, Bjørn Henrik; Tarrant, Ann M.; Lenz, Petra H.; Roncalli, Vittoria; Almeda, Rodrigo; Broch, Ole Jacob; Altin, Dag; Tollefsen, Knut-Erik (Peer reviewed; Journal article, 2023)Oil and gas industries in the Northern Atlantic Ocean have gradually moved closer to the Arctic areas, a process expected to be further facilitated by sea ice withdrawal caused by global warming. Copepods of the genus ... -
Exposure to low environmental copper concentrations does not affect survival and development in Atlantic cod (Gadus morhua) early life stages
Farkas, Julia; Svendheim, Linn Hjelmeland; Jager, Tjalling; Ciesielski, Tomasz Maciej; Nordtug, Trond; Kvæstad, Bjarne; Hansen, Bjørn Henrik; Kristensen, Torstein; Altin, Dag; Olsvik, Pål Asgeir (Peer reviewed; Journal article, 2021)In this study we investigated potential impacts of Cu exposure at low, environmentally relevant, concentrations on early live stages of Atlantic cod (Gadus morhua). Cod embryos and larvae were exposed to 0.5 μg/L (low), ...