Browsing NOFIMA vitenarkiv by Author "Tveiten, Helge"
Now showing items 1-20 of 21
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Cold seawater induces early sexual developmental stages in the BPG axis of European eel males
Rozenfeld, Christoffer; García-Carpintero, Victor; Pérez, Luz; Gallego, Victor; Herranz-Jusdado, Juan Germán; Tveiten, Helge; Johnsen, Helge K.; Fontaine, Romain David; Weltzien, Finn-Arne; Cañizares, Joaquín; Asturiano, Juan F.; Penaranda, David Sanchez (Peer reviewed; Journal article, 2019) -
Development of Atlantic Salmon (Salmo salar L.) Under Hypoxic Conditions Induced Sustained Changes in Expression of Immune Genes and Reduced Resistance to Moritella viscosa
Krasnov, Aleksei; Burgerhout, Erik; Johnsen, Hanne; Tveiten, Helge; Bakke, Anne Flore; Lund, Hege; Afanasyev, Sergey; Rebl, Alexander; Johansen, Lill-Heidi (Peer reviewed; Journal article, 2021)Atlantic salmon is characterized with high sensitivity to low dissolved oxygen (DO) levels. Hypoxia can affect diverse biological processes with consequences that can be manifested immediately or with delay. Effects of ... -
Differential expression of gonadotropin and estrogen receptors and oocyte cytology during follicular maturation associated with egg viability in European eel (Anguilla anguilla)
da Silva, Filipa F.G.; Tveiten, Helge; Maugars, Gersende Marie Aimee; Lafont, Anne-Gaëlle; Dufour, Sylvie; Støttrup, Josianne G.; Kjørsvik, Elin; Tomkiewicz, Jonna (Journal article; Peer reviewed, 2018) -
Early Developmental Stress Affects Subsequent Gene Expression Response to an Acute Stress in Atlantic Salmon: An Approach for Creating Robust Fish for Aquaculture?
Robinson, Nicholas Andrew; Johnsen, Hanne; Moghadam, Hooman; Andersen, Øivind; Tveiten, Helge (Peer reviewed; Journal article, 2019) -
Effects of chilled storage and cryopreservation of sperm, and sperm to egg ratio on fertilization success in lumpfish (Cyclopterus lumpus)
Lein, Ingrid; de Vries, Adriana Neeltje; Tveiten, Helge; Refstie, Terje; Gjerde, Bjarne (Peer reviewed; Journal article, 2023) -
Effects of different incubation and start-feeding temperature regimes on growth, survival and histomorphology of cod larvae
Falk-Petersen, Inger-Britt; Peruzzi, Stefano; Lysne, Hege; Toften, Hilde; Tveiten, Helge; Sæther, Bjørn-Steinar; Puvanendran, Velmurugu (Journal article; Peer reviewed, 2019)Mean lengths of newly hatched cod larvae from egg incubation at 4 °C (Low-L) and 9.5 °C (High-H) were similar, and only minor differences were observed in larval histomorphology. However, growth performance of larvae reared ... -
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 (Peer reviewed; Journal article, 2023)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 ... -
Evaluering av helse, velferd og tilvekst hos steril laks etter embryonal blokkering av kimcellene
Andersen, Øivind; Tveiten, Helge; Thesslund, Tina; Kleppen, Hans-Petter (Nofima rapportserie, Research report, 2022)Oppdrett av steril laks vil kunne redusere de negative interaksjonene mellom rømt oppdrettslaks og villaks, og dessuten forbedre fiskens velferd og kvalitet. Prosjektets hovedmål har vært å evaluere viktige produksjonsegenskaper ... -
Gene Expression and Phenotypic Assessment of Egg Quality across Developmental Stages of Atlantic Cod throughout the Spawning Season
Fernández Míguez, María; Presa, Pablo; Puvanendran, Velmurugu; Tveiten, Helge; Hansen, Øyvind J; Pérez, Montse (Peer reviewed; Journal article, 2024) -
Gene Expression and Phenotypic Assessment of Egg Quality across Developmental Stages of Atlantic Cod throughout the Spawning Season
Fernandez Miguez, Maria; Presa, Pablo; Puvanendran, Velmurugu; Tveiten, Helge; Hansen, Øyvind J; Pérez, Montse (Peer reviewed; Journal article, 2024)Egg quality in fishes is commonly determined by fertilisation success and cleavage patterns as a phenotypic outcome of underlying regulatory mechanisms. Although these phenotypic estimators of egg quality are useful in ... -
Impact of germ cell ablation on the activation of the brain–pituitary–gonadal axis in precocious Atlantic salmon (Salmo salar L.) males
Tveiten, Helge; Karlsen, Kristian; Thesslund, Tina; Johansson, Gunhild Seljehaug; Thiyagarajan, Dhivya Borra; Andersen, Øivind (Peer reviewed; Journal article, 2022) -
Impacts of Early Life Stress on the Methylome and Transcriptome of Atlantic Salmon
Moghadam, Hooman; Johnsen, Hanne; Robinson, Nick; Andersen, Øivind; Jørgensen, Even Hjalmar; Johnsen, Helge K.; Bæhr, Vegar J.; Tveiten, Helge (Peer reviewed; Journal article, 2017) -
Impacts of Early Life Stress on the Methylome and Transcriptome of Atlantic Salmon
Moghadam, Hooman; Johnsen, Hanne; Robinson, Nick; Andersen, Øivind; Jørgensen, Even Hjalmar; Johnsen, Helge K.; Bæhr, Vegar J.; Tveiten, Helge (Peer reviewed; Journal article, 2017) -
Low Oxygen Stress During Early Development Influences Regulation of Hypoxia-Response Genes in Farmed Atlantic Salmon (Salmo salar)
Kelly, Tara; Johnsen, Hanne; Burgerhout, Erik; Tveiten, Helge; Thesslund, Tina; Andersen, Øivind; Robinson, Nicholas Andrew (Peer reviewed; Journal article, 2020) -
Molecular transfer to Atlantic salmon ovulated eggs using liposomes
Kumari, Jaya; Flaten, Gøril Eide; Skalko-Basnet, Natasa; Tveiten, Helge (Journal article; Peer reviewed, 2017) -
Multiplicity of Buc copies in Atlantic salmon contrasts with loss of the germ cell determinant in primates, rodents and axolotl
Skugor, Adrijana; Tveiten, Helge; Johnsen, Hanne; Andersen, Øivind (Peer reviewed; Journal article, 2016) -
Optimizing intensive culture protocols for Atlantic cod (Gadus morhua) larvae
Puvanendran, Velmurugu; Swain, Trilochan; Tveiten, Helge; Hansen, Øyvind J; Mortensen, Atle (Peer reviewed; Journal article, 2023) -
Reproductive biology of lumpfish (Cyclopterus lumpus): a key to successful selective breeding
Puvanendran, Velmurugu; Burgerhout, Erik; Hansen, Øyvind J; Tveiten, Helge; Kjørsvik, Elin; Mlingi, Frank Thomas; Tomkiewic, Jonna; Mommens, Maren; Hageskal, Rikard; Iversen, Nina (Nofima rapportserie, Research report, 2022)A detailed description of lumpfish reproductive biology has been described in terms of gonadal development using histological analysis and physiology using sex steroid development. This knowledge of basic reproductive ... -
Reproductive performance of lumpfish (Cyclopterus lumpus, L. 1758) females: Effects of integrated photoperiod and temperature manipulations on sexual maturation and spawning
Mlingi, Frank Thomas; Burgerhout, Erik; Mommens, Maren; Tveiten, Helge; Tomkiewicz, Jonna; Kjørsvik, Elin; Puvanendran, Velmurugu (Peer reviewed; Journal article, 2024)A successful control of sexual maturation is crucial for year-round production of lumpfish juveniles destined as cleaner fish in Atlantic salmon aquaculture. This study investigated the combined effects of photoperiod and ... -
Resolving the complexity of vitellogenins and their receptors in the tetraploid Atlantic salmon (Salmo salar): Ancient origin of the phosvitin-less VtgC in chondrichthyean fishes
Andersen, Øivind; Xu, Chunxia; Timmerhaus, Gerrit; Kirste, Katrine Hånes; Næve, Ingun; Mommens, Maren; Tveiten, Helge (Journal article; Peer reviewed, 2017)