Department of Biological Sciences
Recent Submissions
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Tigecycline-resistant Klebsiella pneumoniae strains from sewage in Norway carry heavy-metal resistance genes encoding conjugative plasmids
(Journal article; Peer reviewed, 2024)Objectives Tigecycline is a last-resort antibiotic used for treatment of infections with carbapenem-resistant Klebsiella pneumoniae. The aim of the study was to understand the genetic mechanism of resistance and the genetic ... -
Biofilter and degasser performance at different alkalinity levels in a brackish water pilot scale recirculating aquaculture system (RAS) for post-smolt Atlantic salmon
(Journal article; Peer reviewed, 2024)Maintaining pH stability in Recirculating Aquaculture Systems (RAS) is essential, as it has a direct impact on the toxicity of ammonia, CO2, and other metabolite compounds, as well as the efficiency of critical processes ... -
Can machine-learning algorithms improve upon classical palaeoenvironmental reconstruction models?
(Journal article; Peer reviewed, 2024)Classical palaeoenvironmental reconstruction models often incorporate biological ideas and commonly assume that the taxa comprising a fossil assemblage exhibit unimodal response functions of the environmental variable of ... -
In vitro responses of Northern Elephant Seals (Mirounga angustirostris) endothelial cells to contaminants under hypoxic and high pressure conditions
(Master thesis, 2024-11-27)Northern elephant seals (Mirounga angustirostris), as apex predators in their marine ecosystem, are vital for maintaining ecological balance. These seals are expert divers, frequently reaching depths below 600 meters, where ... -
Does size matter? The importance of size and winter signal for the smoltification of Atlantic salmon (Salmo salar, Linnaeus 1758)
(Master thesis, 2024-10-29)In Atlantic salmon (Salmo salar L.) aquaculture, there has been a trend toward producing larger smolt in freshwater (FW) as a way to reduce production time in open net-pens at sea (SW). Earlier, the common way to induce ... -
The ontogeny of lymphoid organs and IgM+ B-cells in ballan wrasse (Labrus bergylta) reveals a potential site for extrarenal B-cell lymphopoiesis: The pancreas
(Journal article; Peer reviewed, 2024)Vaccination of farmed fish is the most effective prophylactic measure against contagious diseases but requires specific knowledge on when the adaptive immune system is fully developed. The present work describes kidney and ... -
Liver condition of 0 and 1-group cod (Gadus morhua) in the Barents Sea
(Journal article; Peer reviewed, 2024)Liver condition is hypothesized to be a better condition index for juvenile cod than other somatic condition indices, since cod store most of their excess energy in their liver. It is suggested that population changes in ... -
Population structure and history of North Atlantic Blue whales (Balaenoptera musculus musculus) inferred from whole genome sequence analysis
(Journal article; Peer reviewed, 2024)Knowledge of genetic diversity and structure is essential for developing conservation strategies for endangered species. Blue whales were hunted to near extinction in the mid-twentieth century. Not-withstanding almost ... -
Environmentally driven changes in Atlantic salmon oxidative status interact with physiological performance
(Journal article; Peer reviewed, 2024)Farmed Atlantic salmon in sea cages experience natural seasonal changes in seawater temperature and photoperiod. Atlantic salmon have more oxidized tissues in spring and early summer, and this corresponds to the period of ... -
Leukolectins support lifelong innate immunity in lower vertebrates, and reveal dichotomies of several leukocytic lineages
(Journal article; Peer reviewed, 2024)Innate immunity is vital for animal homeostasis and survival. First-line immuno-defense for fish larvae involves mucus enriched with leukolectin (LL) secreted by dermal lectocytes. Later during the critical transition from ... -
Post-mortem ‘soft flesh’ in three commercial fish species from off Atlantic Morocco associated with the myxosporean parasites Kudoa thyrsites and K. encrasicoli (Myxozoa)
(Journal article; Peer reviewed, 2024)Small pelagic fishes represent one of the most important food resources off the Northwest coast of Africa. Despite their economic significance, little is known about the infections with flesh invading myxosporean parasites ... -
Optimizing alkalinity control in recirculating aquaculture systems (RAS): A dynamic modelling approach
(Journal article; Peer reviewed, 2025)Maintaining good water quality is essential for successful fish production in land-based recirculating aquaculture systems (RAS). Numerous interdependent factors influence water quality parameters, making it difficult to ... -
Spatial restrictions inadvertently doubled the carbon footprint of Norway's mackerel fishing fleet
(Journal article; Peer reviewed, 2024)The ocean is increasingly used for industry, energy and recreation or protected for conservation, resulting in increasing spatial restrictions for fisheries. Simultaneously, producing seafood with a low climate footprint ... -
Hormonal regulation of the phenotype into environmentally appropriate pace-of-life syndromes
(Journal article; Peer reviewed, 2024)The risk of predation is an important driver that tailors life histories in various ways. Using an evolutionary model based on hormonal control, we study how different predation regimes affect adaptive risk-taking and ... -
Influence of salinity on rainbow trout (Oncorhynchus mykiss) smolt development and postsmolt performance
(Journal article; Peer reviewed, 2024)Rainbow trout aquaculture has large potential for growth, but requires better understanding of aspects like smoltification and its effect on trout performance after seawater transfer. The present study examined the effect ... -
Tolerance to fluctuating currents in farmed Atlantic salmon: a novel method to simulate offshore wave effects in the laboratory
(Journal article; Peer reviewed, 2024)To ensure acceptable animal welfare in emerging offshore Atlantic salmon aquaculture, it is crucial to understand the biological limits of the fish. Much work has been done on the effects of water currents, but few studies ... -
Stability study and validation of a liquid chromatography tandem mass spectrometry method for the quantitative analysis of polyphenols in fish feed ingredients
(Journal article; Peer reviewed, 2024)The perception of polyphenols as a safe, healthy, and sustainable solution for replacing synthetic antioxidants has been an important factor for their rapid growing in the global food market. Therefore, it is essential to ... -
Host associated genotypes in the family Branchiomonaceae with proposal of Ca. Branchiomonas mykissicola n. sp. from rainbow trout (Oncorhynchus mykiss)
(Journal article; Peer reviewed, 2024)Candidatus Branchiomonas cysticola is the primary etiological agent of epitheliocystis and the most prevalent bacterium associated with gill disease (GD) in farmed Atlantic salmon (Salmo salar) and rainbow trout (Oncorhynchus ... -
The emerging picture of a diverse deep Arctic Ocean seafloor: From habitats to ecosystems
(Journal article; Peer reviewed, 2024)Interest in the deep Arctic Ocean is rapidly increasing from governments, policy makers, industry, researchers, and conservation groups, accentuated by the growing accessibility of this remote region by surface vessel ... -
A benefit–risk analysis for biological control introductions based on the protection of native biodiversity
(Journal article; Peer reviewed, 2024)The release of biological control agents has been an important means of controlling invasive species for over 150 years. While these releases have led to the sustainable control of over 250 invasive pest and weed species ...
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