• Compositional differences in soybeans on the market: glyphosate accumulates in Roundup Ready GM soybeans 

      Bøhn, Thomas; Cuhra, Marek; Traavik, Terje; Sanden, Monica; Primicerio, Raul (Journal article; Tidsskriftartikkel; Peer reviewed, 2014)
      This article describes the nutrient and elemental composition, including residues of herbicides and pesticides, of 31 soybean batches from Iowa, USA. The soy samples were grouped into three different categories: (i) genetically modified, glyphosate-tolerant soy (GM-soy); (ii) unmodified soy cultivated using a conventional ‘‘chemical’’ cultivation regime; and (iii) unmodified soy cultivated using an ...
    • Conserved collateral antibiotic susceptibility networks in diverse clinical strains of Escherichia coli 

      Podnecky, Nicole L.; Aarag, Elizabeth; Kloos, Julia Maria; Sørum, Vidar; Primicerio, Raul; Roberts, Adam Paul; Rozen, Daniel E.; Samuelsen, Ørjan; Johnsen, Pål Jarle (Journal article; Tidsskriftartikkel; Peer reviewed, 2018-09-10)
      There is urgent need to develop novel treatment strategies to reduce antimicrobial resistance. Collateral sensitivity (CS), where resistance to one antimicrobial increases susceptibility to other drugs, might enable selection against resistance during treatment. However, the success of this approach would depend on the conservation of CS networks across genetically diverse bacterial strains. Here, ...
    • Costs and benefits of natural transformation in Acinetobacter baylyi 

      Hülter, Nils Fredrik; Sørum, Vidar; Borch-Pedersen, Kristina; Liljegren, Mikkel Meyn; Utnes, Ane; Primicerio, Raul; Harms, Klaus; Johnsen, Pål Jarle (Journal article; Tidsskriftartikkel; Peer reviewed, 2017-02-15)
      Background <br> Natural transformation enables acquisition of adaptive traits and drives genome evolution in prokaryotes. Yet, the selective forces responsible for the evolution and maintenance of natural transformation remain elusive since taken-up DNA has also been hypothesized to provide benefits such as nutrients or templates for DNA repair to individual cells. <br> Results <br> We investigated ...
    • Evidence for limited adaptive responsiveness to large-scale spatial variation of habitat quality 

      Werner, Karl-Michael; Taylor, Marc; Diekmann, Rabea; Lloret, Josep; Möllmann, Christian; Primicerio, Raul; Fock, Heino O. (Journal article; Tidsskriftartikkel; Peer reviewed, 2019-10-24)
      The ability of organisms to adapt their foraging behaviour to spatial variations in food availability and habitat quality is crucial to maximize energy intake and hence fitness. Under ideal conditions, habitat selection should result in a spatial distribution of individuals such that their fitness (energy reserves or condition) is roughly equal across habitats of varying quality. Using 11 yr of field ...
    • The German ban on GM maize MON810: scientifically justified or unjustified? 

      Bøhn, Thomas; Primicerio, Raul; Traavik, Terje (Journal article; Tidsskriftartikkel; Peer reviewed, 2012)
    • Glyphosate-Residues in Roundup-Ready Soybean Impair Daphnia magna Life-Cycle 

      Cuhra, Marek; Traavik, Terje; Dando, Mickael; Primicerio, Raul; Holderbaum, Daniel Ferreira; Bøhn, Thomas (Journal article; Tidsskriftartikkel; Peer reviewed, 2015-01-30)
      Herbicide tolerant plants such as Roundup-Ready soybean contain residues of glyphosate herbicide. These residues are considered safe and previous animal-feeding-studies have failed to find negative effects related to such chemical residues. The present study tests 8 experimental soy- meal diets as feed in groups (each containing 20 individuals) of test-animals (D. magna). The diets have different ...
    • Impact of multiple stressors on sea bed fauna in a warming Arctic 

      Jørgensen, Lis Lindal; Primicerio, Raul; Ingvaldsen, Randi Brunvær; Fossheim, Maria; Strelkova, Natalia; Thangstad, Trude Hauge; Manushin, Igor; Zakharov, Denis (Journal article; Tidsskriftartikkel; Peer reviewed, 2019-01-03)
      The Arctic Barents Sea is experiencing a record temperature increase, a poleward shift in the distributions of commercial fish stocks, and invasion by the snow crab, a new predator. To evaluate benthic community vulnerability when exposed to seawater warming, bottom trawling, and predation from a new predator, we used a trait-based approach and applied this to an extensive dataset of >450 megabenthic ...
    • Medication adherence among persons with coronary heart disease and associations with blood pressure and low-density-lipoprotein-cholesterol 

      Pedersen, Elisabeth; Primicerio, Raul; Halvorsen, Kjell H.; Eggen, Anne Elise; Garcia, Beate Hennie; Schirmer, Henrik; Waaseth, Marit (Journal article; Tidsskriftartikkel; Peer reviewed, 2022-01-21)
      Purpose - To describe medication adherence to lipid-lowering drugs (LLDs), antihypertensive drugs, and acetylsalicylic acid (ASA) among persons with coronary heart disease (CHD) and explore its association with low-density-lipoprotein (LDL)-cholesterol, and systolic and diastolic blood pressure.<p> <p>Methods - Based on record linkage between the seventh wave of the Tromsø Study and the Norwegian ...
    • The record-warm Barents Sea and 0-group fish response to abnormal conditions 

      Eriksen, Elena; Bagøien, Espen; Strand, Espen; Primicerio, Raul; Prokhorova, Tatiana; Trofimov, Alexander; Prokopchuk, Irina (Journal article; Tidsskriftartikkel; Peer reviewed, 2020-05-25)
      The Barents Sea is a nursery area for many commercially and ecologically important fish stocks, and this whole region is presently subject to rapid climatic change from a cold period in the 1980s to a record warm period in the latest decade, with a peak in 2016. The present study focuses exclusively on year 2016, which was characterized by record warm air and seawater and an exceptionally large ...
    • Reply to letter to the editor 

      Bøhn, Thomas; Cuhra, Marek; Traavik, Terje; Sanden, Monica; Fagan, John; Primicerio, Raul (Journal article; Tidsskriftartikkel; Peer reviewed, 2015-04-01)
    • Salmon louse infestation levels on sea trout can be predicted from a hydrodynamic lice dispersal model 

      Bøhn, Thomas; Nilsen, Rune; Gjelland, Karl Øystein; Biuw, Martin; Primicerio, Raul; Karlsen, Ørjan; Serra Llinares, Rosa Maria (Journal article; Tidsskriftartikkel; Peer reviewed, 2021-12-13)
      1. The abundance of the parasitic salmon louse has increased with the growth in aquaculture of salmonids in open net pens. This represents a threat to wild salmonid populations as well as a key limiting factor for salmon farming. The Norwegian ‘traffic light’ management system for salmon farming aims to increase aquaculture production while securing sustainable wild salmonid populations. However, ...
    • Spatial and temporal changes in the Barents Sea pelagic compartment during the recent warming 

      Eriksen, Elena; Skjoldal, Hein Rune; Gjøsæter, Harald; Primicerio, Raul (Journal article; Tidsskriftartikkel; Peer reviewed, 2017-01-11)
      The Barents Sea has experienced substantial warming over the last few decades with expansion of relatively warm Atlantic water and reduction in sea ice. Based on a review of relevant literature and additional analyses, we report changes in the pelagic compartment associated with this warming using data from autumn surveys (acoustic capelin, 0-group fish, and ecosystem surveys). We estimated ...
    • Timing is everything: Survival of Atlantic salmon Salmo salar postsmolts during events of high salmon lice densities 

      Bøhn, Thomas; Gjelland, Karl Øystein; Serra Llinares, Rosa Maria; Finstad, Bengt; Primicerio, Raul; Nilsen, Rune; Karlsen, Ørjan; Sandvik, Anne Dagrun; Skilbrei, Ove Tommy; Elvik, Kristine Marit Schrøder; Skaala, Øystein; Bjørn, Pål Arne (Journal article; Tidsskriftartikkel; Peer reviewed, 2020-04-07)
      <ol> <li>Atlantic salmon in aquaculture act as reservoir hosts and vectors of parasites like salmon lice and this parasite is shown to harm wild salmonid populations.</li> <li>In this study, <i>n</i> = 29,817 tagged Atlantic salmon were studied in four release trials. Half of the released fish were given prophylactic treatment against lice, the other half represented sham control fish. We used ...
    • A Trade-off between the Fitness Cost of Functional Integrases and Long-term stability of Integrons 

      Starikova, Irina; Harms, Klaus; Haugen, Pål; Lunde, Tracy Munthali; Primicerio, Raul; Samuelsen, Ørjan; Nielsen, Kaare Magne; Johnsen, Pål Jarle (Journal article; Tidsskriftartikkel; Peer reviewed, 2012)
      Horizontal gene transfer (HGT) plays a major role in bacterial microevolution as evident from the rapid emergence and spread of antimicrobial drug resistance. Few studies have however addressed the population dynamics of newly imported genetic elements after HGT. Here, we show that newly acquired class-1 integrons from Salmonella enterica serovar Typhimurium and Acinetobacter baumannii, free of ...