Browsing Department of Biological Sciences by Title
Now showing items 402-421 of 2232
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Cryptic diversity in the leptothecate genera Laodicea and Tiaropsis (Cnidaria: Hydrozoa)
(Master thesis, 2021-09-01)Although they are an ecologically and economically important group of animals, hydrozoans are understudied because of their difficult identification due to their small size and fragility. Hydrozoans as a group show a great ... -
Cryptic introgression: evidence that selection and plasticity mask the full phenotypic potential of domesticated Atlantic salmon in the wild
(Peer reviewed; Journal article, 2018-09-18)Domesticated Atlantic salmon grow much faster than wild salmon when reared together in fish tanks under farming conditions (size ratios typically 1:2–3). In contrast, domesticated salmon only display marginally higher ... -
Cultivation and genomics of extremophiles from a deep and hot North Sea oil reservoir
(Master thesis, 2014-10-02)In this study, production water from the Troll B oilfield in the North Sea has been used as a source in order to isolate and characterize new extremophilic prokaryotes. Anaerobic enrichment cultures with different carbon ... -
Current efforts on microplastic monitoring in Arctic fish and how to proceed
(Journal article; Peer reviewed, 2022)In this review, we investigated published data on the occurrence of microplastic in Arctic fish, and the suitability of the data and species for risk assessment and monitoring. As of 11.11.2021, we found nine studies in ... -
Cytoskeleton-mediated templating of complex cellulose-scaffolded extracellular structure and its association with oikosins in the urochordate Oikopleura
(Peer reviewed; Journal article, 2010)Oriented cellulose deposition is critical to plant patterning and models suggest microtubules constrain cellulose synthase movements through the plasma membrane. Though widespread in plants, urochordates are the only animals ... -
Daily rhythms of intestinal cholecystokinin and pancreatic proteases activity in Senegalese sole juveniles with diurnal and nocturnal feeding
(Journal article; Peer reviewed, 2021)The influence of diurnal and nocturnal feeding on daily rhythms of gut levels of cholecystokinin (CCK) and the activity of two key pancreatic proteases, trypsin and chymotrypsin, were examined in juveniles of Senegalese ... -
Dancing around the pole: holarctic phylogeography of the Arctic fairy shrimp Branchinecta paludosa (Anostraca, Branchiopoda)
(Peer reviewed; Journal article, 2016-02-09)The distributional patterns of Arctic species are commonly affected by the recurring Pleistocene glaciations, which contributed to transient or permanent genetic isolation. Here we explore the phylogeography of the ... -
The Day-to-day Supply Responses of a Limited-entry Mixed Fishery
(Journal article; Peer reviewed, 2021)Small-scale fishers’ short-run supply decisions are understudied, often because of data limitations. We utilize a unique dataset of daily catches and prices from a mixed-species trawl fishery in Taiwan, characterized by ... -
Decision-making from the animal perspective: Bridging ecology and subjective cognition
(Journal article; Peer reviewed, 2019-05-14)Organisms have evolved to trade priorities across various needs, such as growth, survival, and reproduction. In naturally complex environments this incurs high computational costs. Models exist for several types of decisions, ... -
Decision-making in a proximate model framework: How behaviour flexibility is generated by arousal and attention
(Master thesis, 2017-08-19)Animals must make decisions based on limited information and during a limited amount of time. The time spent exploring possibilities and sampling environmental information, means less time spent at actually gathering and ... -
Decoding Springtime Oxidation in Postsmolt Atlantic Salmon: Implications for Redox Signaling and Growth
(Doctoral thesis, 2023-09-22)Fisk er en integrert del av akvatiske økosystemer, og deres evne til å takle miljøendringer er en viktig global bekymring. Oppdrettet atlantisk laks i sjømerder er eksponert for ulike miljøforhold, inkludert endringer i ... -
Deep chlorophyll a maxima (DCMs) in pelagic Antarctic waters. II. Relation to bathymetric features and dissolved iron concentrations
(Peer reviewed; Journal article, 2005-08-01)A deep chlorophyll a maximum (DCM) at depths between 60 and 90 m in waters south of the Antarctic Polar Front (APF) occurs only in pelagic waters where the chlorophyll a concentrations in the upper mixed layer (UML) are ... -
Deep learning-enabled Inference of 3D molecular absorption distribution of biological cells from IR spectra
(Journal article; Peer reviewed, 2022)Infrared spectroscopy delivers abundant information about the chemical composition, as well as the structural and optical properties of intact samples in a non-destructive manner. We present a deep convolutional neural ... -
Deep vision: An in-trawl stereo camera makes a step forward in monitoring the pelagic community
(Peer reviewed; Journal article, 2014-11-13)Ecosystem surveys are carried out annually in the Barents Sea by Russia and Norway to monitor the spatial distribution of ecosystem components and to study population dynamics. One component of the survey is mapping the ... -
Deep-Sea Carnivorous Sponges From the Mariana Islands
(Peer reviewed; Journal article, 2019-07-10)Carnivorous sponges belonging to family Cladorhizidae (Porifera, Demospongiae, Poecilosclerida) are unique within phylum Porifera due to their ability to capture and envelop small prey. While other sponges use an aquiferous ... -
Deep-sea sponge derived environmental DNA analysis reveals demersal fish biodiversity of a remote Arctic ecosystem
(Journal article; Peer reviewed, 2023)The deep-sea is vast, remote, and largely underexplored. However, methodological advances in environmental DNA (eDNA) surveys could aid in the exploration efforts, such as using sponges as natural eDNA filters for studying ... -
Deep-sea sponge grounds as nutrient sinks: Denitrification is common in boreo-Arctic sponges
(Journal article; Peer reviewed, 2020-03)Sponges are commonly known as general nutrient providers for the marine ecosystem, recycling organic matter into various forms of bioavailable nutrients such as ammonium and nitrate. In this study we challenge this view. ... -
A Deep-Sea Sponge Loop? Sponges Transfer Dissolved and Particulate Organic Carbon and Nitrogen to Associated Fauna
(Journal article; Peer reviewed, 2021)Cold-water coral reefs and sponge grounds are deep-sea biological hotspots, equivalent to shallow-water tropical coral reefs. In tropical ecosystems, biodiversity and productivity are maintained through efficient recycling ... -
Deep-sequencing of the bacterial microbiota in commercial-scale recirculating and semi-closed aquaculture systems for Atlantic salmon post-smolt production
(Peer reviewed; Journal article, 2016-10-20)New aquaculture production systems are evolving for prolong production of Atlantic salmon smolts or post-smolts before stocking in traditional net pens, such as semi-closed containment systems (S-CCS) in sea (Fig. 1) and ...