Browsing Brage IMR by Author "Norberg, Birgitta"
Now showing items 21-32 of 32
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Pituitary Gonadotropin Gene Expression During Induced Onset of Postsmolt Maturation in Male Atlantic Salmon: In Vivo and Tissue Culture Studies
Crespo, Diego; Skaftnesmo, Kai Ove; Kjærner-Semb, Erik Nordtorp; Yilmaz, Ozlem; Norberg, Birgitta; Olausson, Sara; Vogelsang, Petra; Bogerd, Jan; Kleppe, Lene; Edvardsen, Rolf Brudvik; Andersson, Eva; Wargelius, Anna; Hansen, Tom Johnny; Fjelldal, Per Gunnar; Schulz, Rüdiger W. (Peer reviewed; Journal article, 2022)Precocious male maturation causes reduced welfare and increased production costs in Atlantic salmon (Salmo salar) aquaculture. The pituitary produces and releases follicle-stimulating hormone (Fsh), the gonadotropin ... -
The Piwil1 N domain is required for germ cell survival in Atlantic salmon
Almeida, Fernanda Loureiro; Skaftnesmo, Kai Ove; Andersson, Eva; Kleppe, Lene; Edvardsen, Rolf Brudvik; Norberg, Birgitta; Fjelldal, Per Gunnar; Hansen, Tom Johnny; Schulz, Rüdiger W.; Wargelius, Anna (Peer reviewed; Journal article, 2022)Genetic introgression of farmed salmon into wild populations can damage the genetic integrity of wild stocks and is therefore considered as an environmental threat. One possible solution is to induce sterility in farmed ... -
Protokoll for vurdering av modningsgrad hos oppdrettstorsk
Alix, Maud; Norberg, Birgitta (Rapport fra havforskningen;2024 - 8, Research report, 2024)Den gjeldende protokollen for vurdering av modningsnivået hos oppdrettstorsk skisserer distinkte modenhetsstadier hos både hann- og hunntorsk (Gadus morhua). Denne protokollen hjelper til med å evaluere graden av modenhet ... -
Quantitative proteome profiling reveals molecular hallmarks of egg quality in Atlantic halibut: impairments of transcription and protein folding impede protein and energy homeostasis during early development
Yilmaz, Ozlem; Mangor-Jensen, Anders; Harboe, Torstein; Drønen, Margareth Møgster; Mangor-Jensen, Ragnfrid; Mjaavatten, Olav; Birkeland, Even; Spriet, Endy; Sandven, Linda; Furmanek, Tomasz; Berven, Frode Steingrimsen; Wargelius, Anna; Norberg, Birgitta (Peer reviewed; Journal article, 2022)Tandem mass tag spectrometry (TMT labeling-LC-MS/MS) was utilized to examine the global proteomes of Atlantic halibut eggs at the 1-cell-stage post fertilization. Comparisons were made between eggs judged to be of good ... -
The reproductive cycle of female Ballan wrasse Labrus bergylta in high latitude, temperate waters
Muncaster, S.; Andersson, Eva; Kjesbu, Olav Sigurd; Taranger, Geir Lasse; Skiftesvik, Anne Berit; Norberg, Birgitta (Journal article; Peer reviewed, 2010-08)This 2 year study examined the reproductive cycle of wild female Ballan wrasse Labrus bergylta in western Norway as a precursor to captive breeding trials. Light microscopy of ovarian histology was used to stage gonad ... -
Sex steroid production associated with puberty is absent in germ cellfree salmon
Kleppe, Lene; Andersson, Eva; Skaftnesmo, Kai Ove; Edvardsen, Rolf; Fjelldal, Per Gunnar; Norberg, Birgitta; Bogerd, Jan; Schulz, Rüdiger W.; Wargelius, Anna (Peer reviewed; Journal article, 2017) -
Sexual maturation and smoltification in domesticated Atlantic salmon (Salmo salar L.) - is there a developmental conflict?
Fjelldal, Per Gunnar; Schulz, Rüdiger W.; Nilsen, Tom Ole; Andersson, Eva; Norberg, Birgitta; Hansen, Tom Johnny (Journal article; Peer reviewed, 2018)We present data from two experiments that examined how the developmental processes of smoltification and sexual maturation proceed in parallel in domesticated Atlantic salmon. Onset of maturation and smoltification was ... -
The stress response in Atlantic salmon (Salmo salar L.): identification and functional characterization of the corticotropin-releasing factor (crf) paralogs
Lai, Floriana; Royan, Muhammad Rahmad; Gomes, Ana S.; Espe, Marit; Aksnes, Anders; Norberg, Birgitta; Gelebart, Virginie; Rønnestad, Ivar (Peer reviewed; Journal article, 2021)Corticotropin-Releasing Factor (CRF) is one of the main mediators of the Hypothalamic-Pituitary–Interrenal (HPI) axis to stress response. In Atlantic salmon, a comparative understanding of the crf1 paralogs role in the ... -
Supplementary materials for Loss of Fshr prevents testicular maturation in Atlantic salmon (Salmo salar L.).
Andersson, Eva; Schulz, Rüdiger W; Almeida, Fernanda; Kleppe, Lene; Skaftesmo, Kai Ove; Kjærner-Semb, Erik; Crespo, Diego; Fjelldal, Per Gunnar; Hansen, Tom; Norberg, Birgitta; Edvardsen, Rolf B.; Wargelius, Anna (Others, 2024-01-30)Supplementary materials for "Loss of Fshr prevents testicular maturation in Atlantic salmon (Salmo salar L.)." published in Endocrinology, an Oxford academic journal https://doi.org/10.1210/endocr/bqae013 -
The use of photoperiods to provide year round spawning in lumpfish Cyclopterus lumpus
Imsland, Albert; Hangstad, Thor Arne; Jonassen, Thor Magne; Stefansson, Sigurd Olav; Nilsen, Tom Ole; Hovgaard, Peter; Elvegård, Tor Anders; Lindberg, Ken Ståle; Mikalsen, Bjørn; Urskog, Tonje Cecilie; Norberg, Birgitta; Andersson, Eva; Spetland, Frank; Reynolds, Patrick (Journal article; Peer reviewed, 2019)In order to provide year round spawning broodstock, lumpfish (initial size 746 g and 24.9 cm) were reared under four different photoperiod regimes from January 2017 to July 2018. One group was reared under simulated natural ... -
Timecourse of oocyte development in saithe Pollachius virens
Skjæraasen, Jon Egil; Devine, Jennifer Ann; Godiksen, Jane Aanestad; Fonn, Merete; Otterå, Håkon Magne; Kjesbu, Olav Sigurd; Norberg, Birgitta; Langangen, Øystein; Karlsen, Ørjan (Journal article; Peer reviewed, 2017)Wild caught North Sea saithe Pollachius virens were monitored for growth, sex steroid profiles and oocyte development pre-spawning and measured for egg size and group fecundity during the spawning season in the laboratory. ... -
Vellykket startfôring av kveitelarver fra gytetidsforskjøvet stamfisk
Næss, Tore Håkon; Norberg, Birgitta (Havforskningsnytt, Working paper, 1996)