Article
Environmental Sciences
Libe Aranguren-Abadia, Fekadu Yadetie, Carey E. Donald, Elin Sorhus, Lars Eirik Myklatun, Xiaokang Zhang, Kai K. Lie, Prescilla Perrichon, Charlotte L. Nakken, Caroline Durif, Steven Shema, Howard Browman, Anne Berit Skiftesvik, Anders Goksoyr, Sonnich Meier, Odd Andre Karlsen
Summary: The study highlights the photo-enhanced toxicity of crude oil in Atlantic cod embryos and larvae when exposed to UV radiation. Exposure to high doses of crude oil under UV radiation resulted in increased mortality and deformities in the fish specimens.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Article
Environmental Sciences
David Megson, Thomas Brown, Gareth Rhys Jones, Mathew Robson, Glenn W. Johnson, Guuske P. Tiktak, Courtney D. Sandau, Eric J. Reiner
Summary: PCBs play a crucial role in understanding the bioaccumulation and biomagnification of POPs in marine mammals. This study found that the concentrations of PCBs in most samples exceeded toxic thresholds for marine mammals, indicating the health risk they face from PCB exposure. A novel PCB signature was identified in a sei whale, highlighting the importance of considering atmospheric deposition as a significant source of exposure.
Article
Food Science & Technology
Rafaela Menezes dos Passos, Rubia Mariana da Silva, Paula Virginia de Almeida Pontes, Marcelo Antonio Morgano, Antonio J. A. Meirelles, Christian V. Stevens, Marcela Cravo Ferreira, Klicia Araujo Sampaio
Summary: This study investigated the application of Purifine(R) 3G in the enzymatic degumming of crude soybean oil. The results showed that Purifine(R) 3G could increase the oil yield, decrease the phosphorus content, and preserve the oil quality.
LWT-FOOD SCIENCE AND TECHNOLOGY
(2022)
Article
Fisheries
Kyla Meagan Zatti, Monica Juarez Ceballos, Victoria Valdenegro Vega, Vegard Denstadli
Summary: The global goal of developing sustainable aquafeed has faced challenges in sourcing raw materials, particularly the limited availability of fish oil. However, commercial algal alternatives have emerged as a potential solution. A study was conducted to evaluate the full replacement of fish oil with algae oil in Atlantic salmon feed and the results showed that it effectively reduced the levels of contaminants in the fish fillet without compromising its growth performance, health, and final product quality. This study highlights the importance of using algal alternatives in aquafeed to improve both food safety and sustainability.
Article
Multidisciplinary Sciences
Morgan Lizabeth Bender, Julia Giebichenstein, Ragnar N. Teisrud, Jennifer Laurent, Marianne Frantzen, James P. Meador, Lisbet Sorensen, Bjorn Henrik Hansen, Helena C. Reinardy, Benjamin Laurel, Jasmine Nahrgang
Summary: The study demonstrates synergistic adverse effects of increased water temperature and crude oil exposure on early life stages of polar cod, resulting in increased prevalence of malformations and mortality in exposed larvae, especially in the first feeding larval stages.
SCIENTIFIC REPORTS
(2021)
Article
Environmental Sciences
Allie M. Scovil, Benjamin P. de Jourdan, Ben Speers-Roesch
Summary: This study examined the potential impacts of the offshore oil industry on cold-water marine species in Atlantic Canada, specifically focusing on the sublethal developmental impacts of oil exposure and spill response measures on Atlantic cod. The results showed that increasing oil concentrations led to an increased incidence of sublethal symptoms in cod, such as impaired swimming ability and spinal curvature. The study also found intraspecific variation in the response among cod families, suggesting that sensitivity to oil exposure depends on genetic background.
ENVIRONMENTAL TOXICOLOGY AND CHEMISTRY
(2022)
Article
Chemistry, Applied
Chen Liu, Fu-sheng Chen, Yi-miao Xia
Summary: The study analyzed the composition of proteins, neutral lipids, and phospholipids in peanut oil bodies, and identified major proteins such as oleosin, caleosin, and steroleosin. The distribution of oil, protein, and phospholipid in oil bodies was observed, showing weak interactions between adsorbed proteins and oil bodies.
JOURNAL OF FOOD COMPOSITION AND ANALYSIS
(2022)
Article
Environmental Sciences
Prescilla Perrichon, Carey E. Donald, Elin Sorhus, Torstein Harboe, Sonnich Meier
Summary: The study demonstrated the importance of exposure timing on the toxic effects of crude oil in Atlantic halibut. Both early and late embryonic exposures did not show notable acute toxicity, but exhibited global latent teratogenic effects during yolk sac stages. Fish exposed during organogenesis (late) displayed stronger toxic effects compared to fish exposed during the epiboly process (early), indicating exposure timing significantly influences toxic effects.
SCIENCE OF THE TOTAL ENVIRONMENT
(2021)
Article
Environmental Sciences
Ireen Vieweg, Morgan Lizabeth Bender, Philipp Robert Semenchuk, Haakon Hop, Jasmine Nahrgang
Summary: Climate models predict prolonged ice-free periods in the Arctic waters in the next decade, allowing increased shipping activity and easier access to petroleum resources. Concerns arise over the biological effects of accidental petroleum release on key Arctic marine species such as polar cod. This study found that adult polar cod exposed to environmentally-relevant crude oil doses did not show significant effects on growth and survival, indicating their relative resilience to dietary crude oil exposure at tested doses.
MARINE ENVIRONMENTAL RESEARCH
(2022)
Article
Environmental Sciences
Jason T. Magnuson, Giovanna Monticelli, Daniel Schlenk, Joseph H. Bisesi Jr, Daniela M. Pampanin
Summary: Polycyclic aromatic hydrocarbons from crude oil can negatively impact the health of fish. However, the effects of dysbiosis in fish gut microbial communities and its influence on fish toxic response following exposure have been poorly characterized in marine species. This study used metagenomic and metatranscriptomic sequencing to analyze the microbial communities in juvenile Atlantic cod exposed to dispersed crude oil. The results showed significant changes in microbial composition and function, as well as altered pathways related to energy, biosynthesis, and cellular structure. The study also found common pathways between fish transcriptomic profiling and microbial functional annotations, suggesting the importance of gut microbial communities in fish response to oil exposure.
ENVIRONMENTAL RESEARCH
(2023)
Article
Environmental Sciences
Leah C. C. Strople, Ireen Vieweg, Fekadu Yadetie, Derrick Kwame Odei, Anders Thorsen, Odd Andre Karlsen, Anders Goksoyr, Lisbet Sorensen, Antonio Sarno, Bjorn Henrik Hansen, Marianne Frantzen, Oyvind J. Hansen, Velmurugu Puvanendran, Jasmine Nahrgang
Summary: Scientists studied the impact of crude oil exposure on adult polar cod and their gametes during the spawning period. The results showed that crude oil exposure affected the spawning behavior and gamete quality of polar cod, while food limitation had a minor effect. This study reveals the importance of the spawning period in polar cod's sensitivity to crude oil exposure and highlights the need for further research.
JOURNAL OF TOXICOLOGY AND ENVIRONMENTAL HEALTH-PART A-CURRENT ISSUES
(2023)
Article
Environmental Sciences
Jaromir Sobotka, Gerhard Lammel, Jaroslav Slobodnik, Anne Schink, Roman Prokes, Branislav Vrana
Summary: The study found that the spatial distribution of HOCs and emerging pollutants in the South Atlantic Ocean and the Black Sea is influenced by riverine inputs, ocean currents, and atmospheric deposition from continental plumes. The observed concentration gradients indicate that eastern South Atlantic Ocean receives DDT from sources in South Africa, while the emissions of endosulfan originate in South America, and elevated HOC concentrations in the northwestern Black Sea are related to their discharge by rivers from the European continent.
MARINE POLLUTION BULLETIN
(2021)
Article
Environmental Sciences
Elin Sorhus, Carey E. Donald, Charlotte L. Nakken, Prescilla Perrichon, CarolineM. F. Durif, Steven Shema, Howard I. Browman, Anne Berit Skiftesvik, Kai K. Lie, Josef D. Rasinger, Mette H. B. Mueller, Sonnich Meier
Summary: Crude oil has severe effects on developing fish, and photomodification of its constituents increases its toxicity. This study focuses on the impact of crude oil and UV radiation on Atlantic haddock embryos. The accumulation of crude oil on the eggshell increases their susceptibility to exposure, especially in high latitudes with prolonged UV radiation. The co-exposure of crude oil and UV radiation resulted in acute toxicity and morphological defects in haddock embryos.
SCIENCE OF THE TOTAL ENVIRONMENT
(2023)
Article
Environmental Sciences
Elin Sorhus, Lisbet Sorensen, Bjorn Einar Grosvik, Jeremie Le Goff, John P. Incardona, Tiffany L. Linbo, David H. Baldwin, Orjan Karlsen, Trond Nordtug, Bjorn Henrik Hansen, Anders Thorsen, Carey E. Donald, Terje van der Meeren, William Robson, Steven J. Rowland, Josef D. Rasinger, Frode B. Vikebo, Sonnich Meier
Summary: Atlantic haddock embryos are highly sensitive to toxicity from spilled oil due to their ability to bind dispersed crude oil droplets to the eggshell. Our study established developmental toxicity thresholds and identified potential long-term adverse effects. Embryos exposed to different oil concentrations exhibited acute and delayed mortality at different life stages, with an effect threshold of 0.1 μg TPAH/L recommended for risk assessment models due to latent sublethal developmental toxicity.
MARINE POLLUTION BULLETIN
(2023)
Article
Ophthalmology
Pal A. Olsvik, Roderick Nigel Finn, Sofie C. Remo, Per G. Fjelldal, Francois Chauvigne, Kevin A. Glover, Tom Hansen, Rune Waagbo
EXPERIMENTAL EYE RESEARCH
(2020)
Article
Marine & Freshwater Biology
Siri Ofsthus Goksoyr, Jed Goldstone, Roger Lille-Langoy, Erik-Jan Lock, Pal A. Olsvik, Anders Goksoyr, Odd Andre Karlsen
Summary: The study revealed that the Atlantic cod possesses two VDR orthologous genes, which can be activated by vitamin D. Some polycyclic aromatic hydrocarbons can interact with VDRs, affecting their transcriptional activities and potentially altering the vitamin D signaling pathway, leading to adverse effects on the cardiac development and bone deformities in fish.
AQUATIC TOXICOLOGY
(2021)
Article
Environmental Sciences
Pal A. Olsvik, Atabak M. Azad, Fekadu Yadetie
Summary: This study investigated high concentrations of mercury in deep-water fish species in Norwegian fjords, focusing on tusk sampled from Sognefjorden in Western Norway. Analysis of liver tissue revealed a significant correlation between fish weight and accumulation of methylmercury (MeHg), leading to potential sublethal effects. Transcriptome analysis identified hundreds of differentially expressed genes linked to pathways involved in protein folding, adipogenesis, and lipid metabolism, suggesting negative impacts of mercury bioaccumulation on tusk in Sognefjorden.
Article
Environmental Sciences
Julia Farkas, Trond Nordtug, Linn H. Svendheim, Elettra D. Amico, Emlyn J. Davies, Tomasz Ciesielski, Bjorn Munro Jenssen, Torstein Kristensen, Pal A. Olsvik, Bjorn Henrik Hansen
Summary: This study investigates the impacts of tailings from a calcium carbonate processing plant on early live stages of haddock and Atlantic cod. Results show that mineral particles adhere to fish eggs, affecting egg buoyancy, survival, and development. Tailing exposure induced early hatching, reduced survival, and caused malformations in larvae, particularly in cod.
ENVIRONMENTAL RESEARCH
(2021)
Article
Environmental Sciences
Linn H. Svendheim, Tjalling Jager, Pal A. Olsvik, Ida Beathe Overjordet, Tomasz M. Ciesielski, Trond Nordtug, Torstein Kristensen, Bjorn Henrik Hansen, Bjarne Kvaestad, Dag Altin, Julia Farkas
Summary: This study investigated the effects of mine tailing exposure on marine copepods and found that exposure led to slower growth and reduced lipid accumulation. The presence of metals and processing chemicals did not influence these responses, suggesting that uptake of mineral particles was responsible for the observed effects. The applied dynamic energy budget (DEB) model confirmed that ingestion of tailing particles while feeding can result in less energy being available for growth and development.
Article
Environmental Sciences
Stefania Piarulli, Bjorn Henrik Hansen, Tomasz Ciesielski, Anna-Lena Zocher, Arne Malzahn, Pal A. Olsvik, Christian Sonne, Trond Nordtug, Bjorn Munro Jenssen, Andy M. Booth, Julia Farkas
Summary: Rare earth elements and yttrium are critical elements with potential environmental impacts when released into marine ecosystems. Current research gaps exist in understanding the distribution and effects of anthropogenic REY, particularly at the organismal level, highlighting the need for further scientific attention and risk assessment in marine environments.
ENVIRONMENTAL POLLUTION
(2021)
Article
Food Science & Technology
Madhushri S. Varunjikar, Carlos Moreno-Ibarguen, Juan S. Andrade-Martinez, Hui-Shan Tung, Ikram Belghit, Magnus Palmblad, Pal A. Olsvik, Alejandro Reyes, Josef D. Rasinger, Kai K. Lie
Summary: The study shows that both DNA and protein-based approaches can efficiently tackle current challenges in feed and food authentication analyses.
Article
Engineering, Environmental
Shubham Varshney, Adnan H. Gora, Prabhugouda Siriyappagouder, Viswanath Kiron, Pal A. Olsvik
Summary: The study found that 6PPD quinone is toxic to zebrafish larvae, but no significant mortality was observed at the tested concentrations, resulting in a dose-dependent reduction in swimming performance. Exposure to environmentally relevant concentrations (1 µg/L) of 6PPD and 6PPD quinone did not affect the behavior of zebrafish embryos, while exposure to higher but sublethal concentrations (10 and 25 µg/L) can impact behavioral endpoints.
JOURNAL OF HAZARDOUS MATERIALS
(2022)
Article
Genetics & Heredity
Rolf Brudvik Edvardsen, Ola Wallerman, Tomasz Furmanek, Lene Kleppe, Patric Jern, Andreas Wallberg, Erik Kjaerner-Semb, Stig Maehle, Sara Karolina Olausson, Elisabeth Sundstroem, Torstein Harboe, Ragnfrid Mangor-Jensen, Margareth Mogster, Prescilla Perrichon, Birgitta Norberg, Carl-Johan Rubin
Summary: This study reveals the sex chromosomes and sex determination mechanism of Atlantic halibut through genome sequencing analysis. The research found that male halibut have higher gene activity of the gonadal somatic cell derived factor gene, which is due to the enhanced function of mobile DNA sequences on the sex chromosomes. In addition, the study also found that the behavior of halibut chromosomes is similar to sex chromosomes, which may contribute to the rapid turnover of genetic sex determination systems in fish.
Article
Environmental Sciences
Pal A. Olsvik, Elin Sorhus, Sonnich Meier, Ingrid Torvanger, Maja Thorbjornsen, Anders Thorsen, Lisbet Sorensen, Per Gunnar Fjelldal, Orjan Karlsen, Igo G. Guimaraes, Kai K. Lie
Summary: High concentrations of dispersed crude oil exposure had negative effects on the growth and bone integrity of Atlantic haddock larvae, leading to craniofacial and spinal deformities. Larvae with severe deformities may die due to feeding difficulties.
FRONTIERS IN MARINE SCIENCE
(2021)
Article
Food Science & Technology
L. Softeland, P. A. Olsvik
Summary: A novel 3D co-culture model using hepatocytes and kidney epithelial cells from the same fish was developed. Glyphosate exposure was found to alter lipid metabolism in both hepatocytes and kidney cells. The 3D hepatocyte cell culture showed superior response compared to 2D culture and was used in co-culture with kidney cells.
FOOD AND CHEMICAL TOXICOLOGY
(2022)
Article
Environmental Sciences
Isabel S. Abihssira-Garcia, Tanja Kogel, Alessio Gomiero, Torstein Kristensen, Morten Krogstad, Pal A. Olsvik
Summary: This study investigated the interactions between microplastics and persistent organic pollutants (POPs) in relation to Atlantic salmon farming. The results showed that microplastics can sorb POPs from aquafeeds and potentially act as vectors of these chemicals in the marine environment, thereby increasing the environmental impact of fish farming.
MARINE POLLUTION BULLETIN
(2022)
Article
Toxicology
Pal A. Olsvik, Sonnich Meier, Xiaokang Zhang, Anders Goksoyr, Odd Andre Karlsen, Fekadu Yadetie
Summary: This study aimed to compare the mode of action of environmentally relevant concentrations of mixtures of halogenated compounds in Atlantic cod in North Sea and North Atlantic coastal areas. The results showed that halogenated compounds activated the unfolded protein response (UPR) pathway in cod. There was no additive effect observed when cod were exposed to mixtures of all three compound groups.
JOURNAL OF APPLIED TOXICOLOGY
(2023)
Article
Biochemical Research Methods
Mari Raudstein, Erik Kjaerner-Semb, Morten Barvik, Silje Broll, Anne Hege Straume, Rolf Brudvik Edvardsen
Summary: Genome editing using CRISPR/Cas system has the potential to improve breeding programs and introduce desirable genetic traits, such as disease resistance, in salmon aquaculture. In this study, we successfully applied CRISPR/LbCas12a to edit the slc45a2 gene in Atlantic salmon, achieving high rates of homology-directed repair (HDR) using target or non-target strand templates.
TRANSGENIC RESEARCH
(2023)
Article
Fisheries
Pal A. Olsvik, Kristine E. Brokke, Ole B. Samuelsen, Rita Hannisdal
Summary: This study investigates the uptake and toxicity of Lufenuron in liver tissue of Atlantic salmon. The results show that Lufenuron easily bioaccumulates and induces a transient inhibition of transcription in the liver of salmon.
JOURNAL OF FISH DISEASES
(2023)
