Blar i forfatter "Yadetie, Fekadu"

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    • 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; Tidsskriftartikkel; Peer reviewed, 2019-09-26)
      Screening has revealed that modern-day feeds used in Atlantic salmon aquaculture might contain trace amounts of agricultural pesticides. To reach slaughter size, salmon are produced in open net pens in the sea. Uneaten feed pellets and undigested feces deposited beneath the net pens represent a source of contamination for marine organisms. To examine the impacts of long-term and continuous dietary ...

    • Establishment of killer whale (Orcinus orca) primary fibroblast cell cultures and their transcriptomic responses to pollutant exposure 

      Bjørneset, Juni; Blévin, Pierre; Bjørnstad, Pål Marius; Dalmo, Roy Ambli; Goksøyr, Anders; Harju, Mikael; Yadetie, Fekadu; Routti, Heli Anna Irmeli; Limonta, G.; Panti, C.; Sundaram, A.Y.M.; Rikardsen, Audun H. (Journal article; Tidsskriftartikkel; Peer reviewed, 2023-04-02)
      Populations of killer whale (Orcinus orca) contain some of the most polluted animals on Earth. Yet, the knowledge on effects of chemical pollutants is limited in this species. Cell cultures and in vitro exposure experiments are pertinent tools to study effects of pollutants in free-ranging marine mammals. To investigate transcriptional responses to pollutants in killer whale cells, we collected skin ...

    • Spawning time in adult polar cod (Boreogadus saida) altered by crude oil exposure, independent of food availability 

      Strople, Leah Catherine; Vieweg, Ireen; Yadetie, Fekadu; Odei, Derrick Kwame; Thorsen, Anders; Karlsen, Odd André; Goksøyr, Anders; Sørensen, Lisbet; Sarno, Antonio; Hansen, Bjørn Henrik; Frantzen, marianne; Hansen, Øyvind J; Puvanendran, Velmurugu; Nahrgang, Jasmine (Journal article; Tidsskriftartikkel; Peer reviewed, 2023-07-03)
      Fish early life stages are well known for their sensitivity to crude oil exposure. However, the effect of crude oil exposure on adults and their gametes during their spawning period is not well studied. Polar cod, a key arctic fish, may be at risk for crude oil exposure during this potentially sensitive life stage. Additionally, this species experiences lower food availability during their spawning ...

    • Transcriptome responses in polar cod (Boreogadus saida) liver slice culture exposed to benzo[a]pyrene and ethynylestradiol: insights into anti-estrogenic effects 

      Yadetie, Fekadu; Brun, Nadja R; Vieweg, Ireen; Nahrgang, Jasmine; Karlsen, Odd André; Goksøyr, Anders (Journal article; Tidsskriftartikkel; Peer reviewed, 2021-05-17)
      Polar cod (<i>Boreogadus saida</i>) is a key species in the arctic marine ecosystem vulnerable to effects of pollution, particularly from petroleum related activities. To facilitate studying the effects of those pollutants, we adapted a precision-cut liver slice culture protocol for this species. Using this system on board a research vessel, we studied gene expression in liver slice after exposure ...