Browsing NTNU Open by Author "Altin, Dag"
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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 ... -
Carbon Nanotube Properties Influence Adsorption of Phenanthrene and Subsequent Bioavailability and Toxicity to Pseudokirchneriella subcapitata
Glomstad, Berit; Altin, Dag; Sørensen, Lisbet; Liu, Jingfu; Jenssen, Bjørn Munro; Booth, Andy (Journal article; Peer reviewed, 2016)The bioavailability of organic contaminants adsorbed to carbon nanotubes (CNTs) remains unclear, especially in complex natural freshwaters containing natural organic matter (NOM). Here, we report on the adsorption capacity ... -
Cellular level response of the bivalve Limecola balthica to seawater acidification due to potential CO2 leakage from a sub-seabed storage site in the southern Baltic Sea: TiTank experiment at representative hydrostatic pressure
Sokołowski, Adam; Świeżak, Justyna; Hallman, Anna; Olsen, Anders Johny; Ziółkowska, Marcelina; Øverjordet, Ida Beathe; Nordtug, Trond; Altin, Dag; Krause, Daniel Franklin; Salaberria, Iurgi; Smolarz, Katarzyna (Journal article; Peer reviewed, 2021)Understanding of biological responses of marine fauna to seawater acidification due to potential CO2 leakage from sub-seabed storage sites has improved recently, providing support to CCS environmental risk assessment. ... -
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 ... -
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 elevated water temperatures and microalgae diet on prosome size, fat sac development, egg production and hatching success in Calanus finmarchicus.
Sæther, Simen (Master thesis, 2021)Raudåta (Calanus finmarchicus, Gunnerus) er en nøkkelart i Barents- og Norskehavet på grunn av sin tallrikhet og betydning knyttet til energioverføring mellom primærprodusenter og kommersielle fiskearter. Slik som mange ... -
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 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), ... -
The impact of exposure timing on embryo mortality and the partitioning of PAHs when cod eggs are exposed to dispersed and dissolved crude oil
Nordtug, Trond; Olsen, Anders Johny; Wold, Per-Arvid; Salaberria, Iurgi; Øverjordet, Ida Beathe; Altin, Dag; Kjørsvik, Elin; Hansen, Bjørn Henrik (Peer reviewed; Journal article, 2022)During sub-sea oil spills to the marine environment, oil droplets will rise towards the sea surface at a rate determined by their density and diameter as well as the vertical turbulence in the water. Micro-droplets (< 50 ... -
Lipid metabolism in Calanus finmarchicus is sensitive to variations in predation risk and food availability
Skottene, Elise; Tarrant, Ann M.; Altin, Dag; Olsen, Rolf Erik; Choquet, Marvin; Kvile, Kristina Øie (Peer reviewed; Journal article, 2020)Late developmental stages of the marine copepods in the genus Calanus can spend extended periods in a dormant stage (diapause) that is preceded by the accumulation of large lipid stores. We assessed how lipid metabolism ... -
Microplastic dispersal behavior in a novel overhead stirring aqueous exposure system
Salaberria, Iurgi; Nadvornik-Vincent, Colette; Monticelli, Giovanna; Altin, Dag; Booth, Andy (Peer reviewed; Journal article, 2020)Using nominal dose metrics to describe exposure conditions in laboratory-based microplastic uptake and effects studies may not adequately represent the true exposure to the organisms in the test system, making data ... -
Modelling the dynamics of growth, development and lipid storage in the marine copepod Calanus finmarchicus
Jager, Tjalling; Salaverria-Zabalegui, Iurgi Imanol; Altin, Dag; Nordtug, Trond; Hansen, Bjørn Henrik (Journal article; Peer reviewed, 2017)Mechanistic models are essential tools for interpreting and predicting the consequences of a changing environment and stressors such as pollution on the life histories of marine organisms. Here, we apply the simple and ... -
Mortality and transcriptional effects of inorganic mercury in the marine copepod Calanus finmarchicus
Tollefsen, Knut Erik; Song, You; Høgåsen, Tore; Øverjordet, Ida Beathe; Altin, Dag; Hansen, Bjørn Henrik (Journal article; Peer reviewed, 2017)Inorganic mercury (Hg) is highly toxic to organisms including crustaceans and displays multiple toxic modes of action (MoA). The main aim of this investigation was to assess the acute and sublethal toxicity mediated by ... -
Multigenerational exposure to ocean acidification during food limitation reveals consequences for copepod scope for growth and vital rates
Pedersen, Sindre Andre; Håkedal, Ole Jakob; Salaverria-Zabalegui, Iurgi Imanol; Tagliati, Alice; Gustavson, Liv Marie; Jenssen, Bjørn Munro; Olsen, Anders Johny; Altin, Dag (Journal article; Peer reviewed, 2014)The copepod Calanus finmarchicus is a key component of northern Atlantic food webs, linking energy-transfer from phytoplankton to higher trophic levels. We examined the effect of different ocean acidification (OA) scenarios ... -
Oil-mediated oxidative-stress responses in a keystone zooplanktonic species, Calanus finmarchicus
Soloperto, Sofia; Altin, Dag; Hallman, Anna; Skottene, Elise; Hansen, Bjørn Henrik; Jenssen, Bjørn Munro; Ciesielski, Tomasz Maciej (Peer reviewed; Journal article, 2022)The copepod Calanus finmarchicus is an ecologically important species in the North Atlantic, Norwegian and Barents seas. Accidental or continuous petroleum pollution from oil and gas production in these seas may pose a ... -
Phenanthrene Bioavailability and Toxicity to Daphnia magna in the Presence of Carbon Nanotubes with Different Physicochemical Properties
Zindler, Florian; Glomstad, Berit; Altin, Dag; Liu, Jingfu; Jenssen, Bjørn Munro; Booth, Andy (Journal article; Peer reviewed, 2016)Studies investigating the effect of carbon nanotubes (CNTs) on the bioavailability and toxicity of hydrophobic organic compounds in aquatic environments have generated contradictory results, and the influence of different ...