Blar i Bergen Open Research Archive på forfatter "Norland, Sissel"
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Assessing microplastic as a vector for chemical entry into fish larvae using a novel tube-feeding approach
Norland, Sissel; Vorkamp, Katrin; Bogevik, André Sture; Koelmans, Albert A.; Diepens, Noël J.; Burgerhout, Erik; Hansen, Øyvind Jul; Puvanendran, Velmurugu; Rønnestad, Ivar (Journal article; Peer reviewed, 2021)A tube-feeding model for administering microplastic (MP, Ø = 30 μm) spheres to fish larvae was employed to quantify the uptake of hydrophobic organic contaminants (HOCs) into the larval body through a single administration ... -
Brain Distribution of 10 cart Transcripts and Their Response to 4 Days of Fasting in Atlantic Salmon (Salmo salar L.)
Kalananthan, Tharmini; Gomes, Ana S.; Lai, Floriana; Tolås, Ingvill; Jordal, Ann-Elise O.; Norland, Sissel; Murashita, Koji; Rønnestad, Ivar (Journal article; Peer reviewed, 2021-10-25)Cocaine- and amphetamine-regulated transcript (CART) has been known to be involved in feeding and energy balance in mammals, acting as an anorexigenic neuropeptide in hypothalamus. In Atlantic salmon, little is known about ... -
Developmental stages of the ballan wrasse from first feeding through metamorphosis: Cranial ossification and the digestive system
Norland, Sissel; Sæle, Øystein; Rønnestad, Ivar (Journal article; Peer reviewed, 2022)We have described six developmental stages for the ballan wrasse, from the first feeding until the juvenile stage, supported by specific descriptions of cranial ossification, maturation of the digestive tract, and ... -
Light conditions during Atlantic salmon embryogenesis affect key neuropeptides in the melanocortin system during transition from endogenous to exogenous feeding
Norland, Sissel; Gomes, Ana S.; Rønnestad, Ivar; Helvik, Jon Vidar; Eilertsen, Mariann (Journal article; Peer reviewed, 2023)During the first feeding period, fish will adapt to exogenous feeding as their endogenous source of nutrients is depleted. This requires the development of a functional physiological system to control active search for ... -
Mapping key neuropeptides involved in the melanocortin system in Atlantic salmon (Salmo salar) brain
Norland, Sissel; Eilertsen, Mariann; Rønnestad, Ivar; Helvik, Jon Vidar; Gomes, Ana S. (Journal article; Peer reviewed, 2023)The melanocortin system is a key regulator of appetite and food intake in vertebrates. This system includes the neuropeptides neuropeptide y (NPY), agouti-related peptide (AGRP), cocaine- and amphetamine-regulated transcript ... -
Organization, transformation, and activation of the melanocortin system in Atlantic salmon
Norland, Sissel (Doctoral thesis, 2023-11-03)Atlantisk laks (Salmo salar) er en nøkkelart i norsk havbruk. Det trengs imidlertid mer kunnskap og teknologi for å kontinuerlig utvikle mer bærekraftig produksjon, forbedre dyrevelferden og for å øke den økonomiske verdien ... -
Reconstructed 3D-models of the digestive organs of ballan wrasse (Labrus bergylta) during ontogeny
Norland, Sissel (Master thesis, 2017-10)This study describe the ontogeny of the digestive tract and it’s associated glands of ballan wrasse at six reference stages from yolk sac larva (Stage 1; 4 DPH) until juvenile phase (Stage 6; 102 DPH). Reconstructed 3D-models ... -
Regional Expression of npy mRNA Paralogs in the Brain of Atlantic Salmon (Salmo salar, L.) and Response to Fasting
Tolås, Ingvill; Kalananthan, Tharmini; Gomes, Ana S.; Lai, Floriana; Norland, Sissel; Murashita, Koji; Rønnestad, Ivar (Journal article; Peer reviewed, 2021-08-26)Neuropeptide Y (NPY) is known as a potent orexigenic signal in vertebrates, but its role in Atlantic salmon has not yet been fully established. In this study, we identified three npy paralogs, named npya1, npya2, and npyb, ...