Blar i forfatter Artikler, rapporter og annet (Norges fiskerihøgskole) "Burgerhout, Erik"

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    • Effects of weathered polyethylene microplastic ingestion on sexual maturation, fecundity and egg quality in maturing broodstock Atlantic cod Gadus morhua 

      Fernández-Míguez, Maria; Puvanendran, Velmurugu; Burgerhout, Erik; Presa, Pablo; Tveiten, Helge; Vorkamp, Katrin; Hansen, Øyvind J; Johansson, Gunhild Seljehaug; Bogevik, André Sture (Journal article; Tidsskriftartikkel; Peer reviewed, 2023-01-09)
      Microplastics (MPs) have become a global issue as they are omnipresent in the ocean. Fish ingesting MPs through feed could be affected in their physiological function, e.g., disrupted enzyme production and function, reduction of feeding and reproductive failure. This study assessed the effects of feed containing naturally weathered MPs from the Oslofjord (Norway) on the reproductive physiology of ...

    • Ultrasonic imaging as a means of monitoring gonadal development in lumpfish (Cyclopterus lumpus) 

      Mlingi, Frank Thomas; Puvanendran, Velmurugu; Burgerhout, Erik; Tveiten, Helge; Tomkiewicz, Jonna; Kjørsvik, Elin; Mommens, Maren (Journal article; Tidsskriftartikkel; Peer reviewed, 2023-09-21)
      The commercial farming of juvenile lumpfish requires monitoring of gonadal development to achieve synchronized production. Conventional methods such as gonadosomatic index (GSI), sex hormone analyses, gonadal histology, endoscopy, and gene expression analyses are costly, invasive, and often involve sacrificing the fish. We assessed the efficiency of ultrasound as a non-invasive method for monitoring ...