Blar i forfatter "Johansson, Gunhild Seljehaug"
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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 ... -
Functional feed for Atlantic salmon (Salmo salar L.). Effect on gastrointestinal tract during parr-smolt transformation and susceptibility to infectious pancreatic necrosis virus (IPNV)
Johansson, Gunhild Seljehaug (Master thesis; Mastergradsoppgave, 2014-05-15)Atlantic salmon (Salmo salar L.) aquaculture is a relatively new industry in Norway, dating back to the 1960s. It has since then developed in to a profitable industry. Continuous improvement of hygiene control, knowledge of fish nutrition and health has been important for this development. Fish nutrition is a research field that has been increasingly focused on partly due to more use of plant raw ...