Department of Biological Sciences
Nye registreringer
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Food uptake, lipid transport and vitellogenesis in the sea anemone Nematostella vectensis
(Doctoral thesis, 2021-09-20)Balancing energy input and output is crucial for the survival of all organisms, and involves the coordination of many physiological processes such as food uptake, nutrient storage, reproduction and growth. The uptake of ... -
Characterization of the pregnane X receptor (PXR) from European hake (Merluccius merluccius): cloning, ligand activation, and bioinformatical analyses
(Master thesis, 2022-09-08)As a response to adverse environmental conditions, organisms have throughout evolution generated a collection of gene families and pathways providing protection and repair of damage caused by physical, chemical, and ... -
A winter-to-summer transition of bacterial and archaeal communities in Arctic sea ice
(Journal article; Peer reviewed, 2022-08-15)The Arctic is warming 2–3 times faster than the global average, leading to a decrease in Arctic sea ice extent, thickness, and associated changes in sea ice structure. These changes impact sea ice habitat properties and ... -
Geographic variation in gene flow from a genetically distinct migratory ecotype drives population genetic structure of coastal Atlantic cod (Gadus morhua L.)
(Journal article; Peer reviewed, 2022)Identifying how physical and biotic factors shape genetic connectivity among populations in time and space is essential to our understanding of the evolutionary trajectory as well as the management of marine species. ... -
Impact of Antioxidant Feed and Growth Manipulation on the Redox Regulation of Atlantic Salmon Smolts
(Journal article; Peer reviewed, 2022-08-30)Accumulating evidence indicates a close relationship between oxidative stress and growth rate in fish. However, the underlying mechanisms of this relationship remain unclear. This study evaluated the combined effect of ... -
Improving Salmonid Monitoring by Nocturnal Counting in Rivers
(Journal article; Peer reviewed, 2022)Accurate abundance estimates are crucial for evidence-based fisheries management. In rivers, drift dive counting and electrofishing are commonly used for quantifying fish abundance. However, the likelihood that fish are ... -
Gorgonophilus canadensis (Copepoda: Lamippidae) a parasite in the octocoral Paragorgia arborea – relation to host, reproduction, and morphology
(Journal article; Peer reviewed, 2022)The family Lamippidae (Cyclopoida) are endosymbionts mainly occurring in shallow water octocorals and records from deep-sea corals are few. Here we investigated the relationship between the lamippid Gorgonophilus canadensis ... -
Going With the Flow – Population Genetics of the Kelp Saccharina latissima (Phaeophyceae, Laminariales)
(Journal article; Peer reviewed, 2022)Saccharina latissima is the most important habitat-forming kelp in sheltered areas of North-Atlantic, and there is also an increasing interest in cultivation and utilization of S. latissima. The cultivation activity may ... -
Valorisation of waste streams from recirculating aquaculture systems by photoautotrophic microalgae
(Master thesis, 2022-09-11)The low water consumption in Recirculating Aquaculture Systems (RAS) can result in relatively high concentrations of polluting nutrients in effluent waste streams (WSs) compared to traditional Flow-through systems (FTS). ... -
Body-snatcher from the deep? The effect of the parasitic copepod, Sarcotretes scopeli (Jungersen, 1911), on its mesopelagic fish host.
(Master thesis, 2022-06-30)Benthosema glaciale (Reinhardt, 1837) is one of the most abundant fish species found globally. The species plays an important role in the food-web of marine ecosystems, as a link between the trophic levels. In west Norwegian ... -
Maternal gene evolution from a comparative perspective
(Doctoral thesis, 2022-09-27)Foreldreomsorg er et utbredt fenomen i livets tre. Arter bruker ulike midler på å ta vare på avkommet sitt. En metode er å tilføre proviant til de ubefruktede eggene. Slike tilførte midler dekker kravene til energi ... -
Circum-Arctic distribution of chemical anti-herbivore compounds suggests biome-wide trade-off in defence strategies in Arctic shrubs
(Journal article; Peer reviewed, 2022)Spatial variation in plant chemical defence towards herbivores can help us understand variation in herbivore top–down control of shrubs in the Arctic and possibly also shrub responses to global warming. Less defended, ... -
Mucosal immune and stress responses of Neoparamoeba perurans-infected Atlantic salmon (Salmo salar) treated with peracetic acid shed light on the host-parasite-oxidant interactions
(Journal article; Peer reviewed, 2022)Treatment development for parasitic infestation is often limited to disease resolution as an endpoint response, and physiological and immunological consequences are not thoroughly considered. Here, we report the impact of ... -
Investigation of growth performance of post-smolt Atlantic salmon (Salmo salar L.) in semi closed containment system: A big-scale benchmark study
(Journal article; Peer reviewed, 2022)The Norwegian salmon industry faces challenges related to sea lice (Lepeophtheirus salmonis) infestations, escapees, diseases and environmental impact. Semi-closed containment systems (S-CCS) have been proposed to abate ... -
Element composition of particulate matter in the North-West Barents Sea
(Master thesis, 2022-08-10)At the dawn of the 21st century, the Arctic Ocean ecosystem is at great risk due to rapid climatic change. The ice edge retreat observed in the Barents Sea and other sub-Arctic areas is so substantial that has led researchers ... -
Is it possible to photoperiod manipulate spawning time in planktivorous fish ? A long-term experiment on Atlantic herring
(Journal article; Peer reviewed, 2022)The oocyte development (vitellogenesis) of individual fish is highly dependent upon their physiology which is influenced by both intrinsic and extrinsic factors. Thus, if individuals encounter poor biophysical conditions, ... -
The dynamics of 0-group herring Clupea harengus and sprat Sprattus sprattus populations along the Norwegian Skagerrak coast
(Journal article, 2022-07-18)Coastal areas are important habitats for early life stages of many fish species. These habitats are used as nursery grounds and can provide a significant contribution to the recruitment of a fish population. In 1919, ... -
Size-selective harvesting affects the immunocompetence of guppies exposed to the parasite Gyrodactylus
(Journal article; Peer reviewed, 2022)Harvesting is typically size-selective, targeting large individuals. This is expected to lead to reduced average body size and earlier maturation (i.e. faster life histories). Such changes can also affect traits seemingly ... -
The effects of water temperature and photoperiod: Investigating the cause of early activation of the BPG axis in male Atlantic salmon (Salmo salar) during the freshwater stages of development
(Master thesis, 2022-05-25)Early sexual maturation of Atlantic salmon (Salmo salar) post-smolts has been a major issue over the years and has recently become a prevalent issue in land-based production systems like the recirculating aquaculture systems ... -
Transcriptome responses in copepods Calanus finmarchicus, Calanus glacialis and Calanus hyperboreus exposed to phenanthrene and benzo[a]pyrene
(Journal article; Peer reviewed, 2022)Arctic and sub-arctic pelagic organisms can be exposed to effluents and spills from offshore petroleum-related activities and thus it is important to understand how they respond to crude oil related contaminants such as ...
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