Blar i Brage IMR på forfatter "Norberg, Birgitta"
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Atlantic salmon male post-smolt maturation can be reduced by using a 3-hour scotophase when inducing smoltification
Fraser, Thomas; Hansen, Tom Johnny; Norberg, Birgitta; Nilsen, Tom Ole; Schulz, Rüdiger W.; Fjelldal, Per Gunnar (Peer reviewed; Journal article, 2023)Photoperiod regulates the occurrence of unwanted male post-smolt maturation during the production of large (>100 g) Atlantic salmon (Salmo salar) smolts. However, the optimal daylength for triggering smoltification, but ... -
Change in nutrient composition of Artemia grown for 3–4 days and effects of feeding on-grown Artemia on performance of Atlantic halibut (Hippoglossus hippoglossus, L.) larvae
Hamre, Kristin; Erstad, Børre; de Kok, Jori; Norberg, Birgitta; Harboe, Torstein (Peer reviewed; Journal article, 2020) -
Domestisering av marine arter
Jørstad, Knut Eirik; Otterå, Håkon; Nilsen, Frank; Norberg, Birgitta; Dahle, Geir; Karlsen, Ørjan; Skiftesvik, Anne Berit (Research report, 2002) -
Effects of dietary arachidonic acid on the reproductive physiology of female Atlantic cod (Gadus morhua L.)
Norberg, Birgitta; Kleppe, Lene; Andersson, Eva; Thorsen, Anders; Rosenlund, Grethe; Hamre, Kristin (Peer reviewed; Journal article, 2017) -
Effects of dietary arachidonic acid on the reproductive physiology of female Atlantic cod (Gadus morhua L.)
Norberg, Birgitta; Kleppe, Lene; Andersson, Eva; Thorsen, Anders; Rosenlund, Grethe; Hamre, Kristin (Peer reviewed; Journal article, 2017) -
Entry into puberty is reflected in changes in hormone production but not in testicular receptor expression in Atlantic salmon (Salmo salar)
Schulz, Rüdiger W.; Taranger, Geir Lasse; Bogerd, Jan; Nijenhuis, Wouter; Norberg, Birgitta; Male, Rune; Andersson, Eva (Journal article; Peer reviewed, 2019)Background Puberty in male Atlantic salmon in aquaculture can start as early as after the first winter in seawater, stunts growth and entails welfare problems due to the maturation-associated loss of osmoregulation capacity ... -
Forskningsstasjonen Austevoll – marine oppdrettsarters vugge : Austevoll Research Station – where marine species are born
Grav, Torfinn; Norberg, Birgitta (Havforskningsnytt, Working paper, 2009)Austevoll Research station plays a central role in our activities on marine species in all their life stages. Halibut, cod, Ballan wrasse, Calanus finmarchicus, great scallop and blue mussel are our main species for the ... -
Framtidsrettet matproduksjon i kyst og fjord – En vurdering av muligheter for økt sjømatproduksjon i Norge
Torrissen, Ole; Norberg, Birgitta; Kiron, Viswanath; Strohmeier, Tore; Strand, Øivind; Naustvoll, Lars Johan; Svåsand, Terje (Rapport fra havforskningen;23-2018, Research report, 2018)Utredningen ”Framtidsrettet matproduksjon i kyst og fjord” er en del av en kyst-akvakultur-satsing ved Havforskningsinstituttet og har som mål å svare på ”Hvordan skal vi legge til rette for økt, bærekraftig verdiskaping ... -
Full production cycle performance of gene-edited, sterile Atlantic salmon - growth, smoltification, welfare indicators and fillet composition
Kleppe, Lene; Fjelldal, Per Gunnar; Andersson, Eva; Hansen, Tom Johnny; Sanden, Monica; Bruvik, Aina; Skaftnesmo, Kai Ove; Furmanek, Tomasz; Kjærner-Semb, Erik Nordtorp; Crespo, Diego; Flavell, Simon; Pedersen, Audun Østby; Vogelsang, Petra; Torsvik, Anja; Kvestad, Karen Anita; Olausson, Sara; Norberg, Birgitta; Schulz, Rüdiger W.; Bogerd, J.; Santi, N.; Edvardsen, Rolf Brudvik; Wargelius, Anna (Peer reviewed; Journal article, 2022)Using germ cell-free (GCF), sterile, dnd-knockout salmon for farming could solve the problems associated with precocious maturation and genetic introgression of farmed breeds into wild populations. However, prior to using ... -
Functional Evolution of Clustered Aquaporin Genes Reveals Insights into the Oceanic Success of Teleost Eggs
Ferré, Alba; Chauvigné, Francois; Vlasova, Anna; Norberg, Birgitta; Bargelloni, Luca; Guigó, Roderic; Finn, Roderick Nigel; Cerdà, Joan (Peer reviewed; Journal article, 2023)Aquaporin-mediated oocyte hydration is considered important for the evolution of pelagic eggs and the radiative success of marine teleosts. However, the molecular regulatory mechanisms controlling this vital process are ... -
Genetic analyses verify sexually mature escaped farmed Atlantic cod and farmed cod eggs in the natural environment
Jorde, Per Erik; van der Meeren, Terje; Quintela, Maria; Dahle, Geir; Mateos-Rivera, Alejandro; Aase, Marit; Norberg, Birgitta; Sævik, Pål Næverlid; Bjørn, Pål Arne; Glover, Kevin Alan (Dataset, 2024-03-07)Dataset for "Genetic analyses verify sexually mature escaped farmed Atlantic cod and farmed cod eggs in the natural environment" published in Evolutionary Applications, a Wiley journal. The information consists of an ... -
Helårlig produksjon av egg fra kveite og torsk
Norberg, Birgitta (Havforskningsnytt, Working paper, 1994) -
Heterochiasmy and the establishment of gsdf as a novel sex determining gene in Atlantic halibut
Edvardsen, Rolf Brudvik; Wallerman, Ola; Furmanek, Tomasz; Kleppe, Lene; Jern, Patric; Wallberg, Andreas; Kjærner-Semb, Erik Nordtorp; Mæhle, Stig; Olausson, Sara; Sundström, Elisabeth; Harboe, Torstein; Mangor-Jensen, Ragnfrid; Drønen, Margareth Møgster; Perrichon, Prescilla; Norberg, Birgitta; Rubin, Carl-Johan (Peer reviewed; Journal article, 2022)Atlantic Halibut (Hippoglossus hippoglossus) has a X/Y genetic sex determination system, but the sex determining factor is not known. We produced a high-quality genome assembly from a male and identified parts of chromosome ... -
Insulin-like 3 affects zebrafish spermatogenic cells directly and via Sertoli cells
Crespo, Diego; Assis, Luiz H. C.; Zhang, Yu Ting; Safian, Diego; Furmanek, Tomasz; Skaftnesmo, Kai Ove; Norberg, Birgitta; Ge, Wei; Choi, Yung-Ching; den Broeder, Marjo J.; Legler, Juliette; Bogerd, Jan; Schulz, Rüdiger W (Peer reviewed; Journal article, 2021)Pituitary hormones can use local signaling molecules to regulate target tissue functions. In adult zebrafish testes, follicle-stimulating hormone (Fsh) strongly increases the production of insulin-like 3 (Insl3), a Leydig ... -
Interaction of temperature and feed ration on male postsmolt maturation of Atlantic salmon (Salmo salar L.)
Pino Martinez, Enrique; Balseiro Vigo, Pablo; Stefansson, Sigurd Olav; Kaneko, Nobuto; Norberg, Birgitta; Fleming, Mitchell Stewart; Imsland, Albert; Handeland, Sigurd Olav (Peer reviewed; Journal article, 2023)Early maturation of Atlantic salmon male postsmolts is undesirable in aquaculture due to its negative impact on growth, welfare and seawater adaptation, however it is an increasing problem under intensive rearing conditions. ... -
Interaction of temperature and photoperiod on male postsmolt maturation of Atlantic salmon (Salmo salar L.)
Pino Martinez, Enrique; Balseiro Vigo, Pablo; Fleming, Mitchell Stewart; Stefansson, Sigurd Olav; Norberg, Birgitta; Imsland, Albert; Handeland, Sigurd Olav (Peer reviewed; Journal article, 2023)Maturation of Atlantic salmon male postsmolts is a concern in aquaculture due to its increasing occurrence under intensive rearing conditions and its negative impact on growth, welfare and seawater readiness. The effect ... -
Kontroll av reproduksjon og eggekvalitet i marin fisk, spesielt kveite
Norberg, Birgitta (Rapport fra senter for havbruk;1993 Nr. 1, Working paper, 1993) -
Long-term feeding of Atlantic salmon with varying levels of dietary EPA+DHA alters the mineral status, but does not affect the stress responses after mechanical delousing stress
Selvam, Chandrasekar; Prabhu, P. Antony Jesu; Lutfi Royo, Esmail; Sigholt, Trygve; Norberg, Birgitta; Bæverfjord, Grete; Rosenlund, Grethe; Ruyter, Bente Synnøve; Sissener, Nini (Peer reviewed; Journal article, 2022)Atlantic salmon were fed diets containing graded levels of EPA + DHA (1·0, 1·3, 1·6 and 3·5 % in the diet) and one diet with 1·3 % of EPA + DHA with reduced total fat content. Fish were reared in sea cages from about 275 ... -
Loss of stra8 Increases Germ Cell Apoptosis but Is Still Compatible With Sperm Production in Atlantic Salmon (Salmo salar)
Skaftnesmo, Kai Ove; Crespo, Diego; Kleppe, Lene; Andersson, Eva; Edvardsen, Rolf Brudvik; Norberg, Birgitta; Fjelldal, Per Gunnar; Hansen, Tom Johnny; Schulz, Rüdiger W.; Wargelius, Anna (Peer reviewed; Journal article, 2021)Entering meiosis strictly depends on stimulated by retinoic acid 8 (Stra8) gene function in mammals. This gene is missing in a number of fish species, including medaka and zebrafish, but is present in the majority of fishes, ... -
Lumpfish Cyclopterus lumpus reproduction: Pituitary gene expression, physiological and morphological changes accompanying gonadal maturation
Andersson, Eva; Denker, Elsa; Norberg, Birgitta; Schulz, Rüdiger W.; Olausson, Sara; Thorsen, Anders; Stefansson, Sigurd Olav; Imsland, Albert (Peer reviewed; Journal article, 2022)Lumpfish is the most important cleanerfish species in Atlantic salmon farming. Detailed information on the gonadal maturation process is a prerequisite for year-round production of juvenile lumpfish. In the present study ...