Department of Biological Sciences
Recent Submissions
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Effect of temperature on development rate and egg production in Caligus elongatus and other sea louse species
(Journal article; Peer reviewed, 2024)The sea louse Caligus elongatus (Siphonostomatoida, Caligidae) is a generalist ectoparasite commonly found on farmed salmonids in the Atlantic Ocean. Together with the salmon louse Lepeophtheirus salmonis and the Chilean ... -
Ten years in pursuit of excellent biology education
(Research report, 2024) -
Unravelling the implications of natural mortality in fisheries management
(Doctoral thesis, 2024-10-25)Å telle dødsfall av marin fisk og virvelløse dyr i havet er en notorisk vanskelig oppgave som gjør det komplisert å beregne naturlig dødelighet. I naturen kan dødeligheten hos høstede marine organismer deles inn i to: ... -
Spawning fish maintains trophic synchrony across time and space beyond thermal drivers
(Journal article; Peer reviewed, 2024)Increasing ocean temperature will speed up physiological rates of ectotherms. In fish, this is suggested to cause earlier spawning due to faster oocyte growth rates. Over time, this could cause spawning time to become ... -
A genetic method to infer ploidy and aberrant inheritance in triploid organisms
(Journal article; Peer reviewed, 2024)Polyploidy occurs naturally across eukaryotic lineages and has been harnessed in the domestication of many crops and vertebrates. In aquaculture, triploidy can be induced as a biocontainment strategy, as it creates a ... -
Antifouling agents in aquaculture: A study on the bioaccumulation and effects of copper and tralopyril in blue mussels in a laboratory experiment.
(Master thesis, 2024-03-01)Biofouling of net pens from open fish farms is of concern to Norwegian finfish farming and aquaculture industry due to its negative effects on stock, equipment, and infrastructure. A high flow-through of oxygen rich water ... -
Quantifying Gravitational Carbon Flux in the Northeast Atlantic Ocean
(Master thesis, 2024-06-24)Den biologiske karbonpumpen, en nøkkelkomponent i havets karbonsyklus, transporterer årlig mellom 5 og 15 gigatonn karbon fra havoverflaten til dypet. Dette gjør havet til en av de mest betydelige karbonlagrene på ... -
Comparing Smolt Production Estimation Methods in Atlantic Salmon (Salmo salar)
(Master thesis, 2024-06-03)Over the last 50 years the number of wild Atlantic salmon has declined by more than 50 %, and a better understanding of the survival and recruitment dynamics of wild populations are needed to ensure the right measures are ... -
Identification, production and characterization of novel marine enzymes.
(Master thesis, 2024-06-03)Global drivers are causing a shift in the discovery of novelty, for a more sustainable, greener future. Chemical catalysts have been widely used in various industries. However, microbial enzymes of high tolerance to harsh ... -
Revisiting the fauna of the Jan Mayen Vent Fields
(Master thesis, 2024-06-03)This thesis investigates the fauna at three hydrothermal vent sites on the Arctic Mid-Ocean Ridge near Jan Mayen: the Troll Wall, Perle & Bruse and the diffuse venting area Gallionella Garden (500-610 m depth). Together ... -
Size distribution pattern and abundance of Periphylla periphylla in western Norwegian fjords
(Master thesis, 2024-02-06)This thesis investigates the abundance of Periphylla periphylla in Masfjorden (60050`N, 50 30`E) and Fensfjorden, western Norway. The data on which this investigation is based was collected during annual field courses for ... -
Characterization of the novel strain Pseudodesulfovibrio. sp. ægir
(Master thesis, 2024-06-03) -
The effect of seismic shooting on the spawning behaviour of cod (Gadus morhua)
(Master thesis, 2024-06-03)Anthropogenic noise, such as e.g., seismic shooting used to locate oil and gas in the seabed, is recognized as a significant pollutant in the oceans. The sounds produced by the seismic airguns is of a low frequency, ... -
Future directions for deep ocean climate science and evidence-based decision making
(Journal article; Peer reviewed, 2024-10-31)Introduction: A defining aspect of the Intergovernmental Panel on Climate Change (IPCC) assessment reports (AR) is a formal uncertainty language framework that emphasizes higher certainty issues across the reports, especially ... -
Organisation of the Atlantic salmon (Salmo salar) thymus and its content of Ig-expressing cells
(Journal article; Peer reviewed, 2024)The thymus of fishes is located as a dual organ in a rostrodorsal projection within the gill chamber and is covered by the operculum. The histological organization of the teleost fish thymus displays considerable diversity, ... -
Photosynthetic light requirement near the theoretical minimum detected in Arctic microalgae
(Journal article; Peer reviewed, 2024)Photosynthesis is one of the most important biological processes on Earth, providing the main source of bioavailable energy, carbon, and oxygen via the use of sunlight. Despite this importance, the minimum light level ... -
Overview of the MOSAiC expedition: Ecosystem
(Journal article; Peer reviewed, 2024)The international and interdisciplinary sea-ice drift expedition “The Multidisciplinary drifting Observatory for the Study of Arctic Climate” (MOSAiC) was conducted from October 2019 to September 2020. The aim of MOSAiC ... -
Exploring the impact of thermal delousing on gill health and microbiome dynamics in farmed Atlantic Salmon
(Journal article; Peer reviewed, 2024)The economic cost of salmon louse (Lepeophtheirus salmonis and Caligus rogercresseyi) infestations in the Atlantic salmon (Salmo salar) industry has been estimated to be around $900 million annually. This high cost has ... -
Post-smolt Atlantic salmon can regulate buoyancy in submerged sea-cages by gulping air bubbles
(Journal article; Peer reviewed, 2024)Salmon lice (Lepeophtheirus salmonis) are the most severe health challenge facing Atlantic salmon (Salmo salar) aquaculture. Infestations threaten farmed and wild salmonids, drive up production costs, and limit industry ... -
Implications of climate and litter quality for simulations of litterbag decomposition at high latitudes
(Journal article; Peer reviewed, 2024)Litter decomposition is a vital part of the carbon cycle and is thoroughly studied both in the field and with models. Although temporally and spatially limited, litterbag decomposition experiments are often used to calibrate ...