Browsing Department of Biological Sciences by Title
Now showing items 227-246 of 2273
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Can enrichment improve the post-release survival of hatchery-reared Atlantic salmon fry (Salmo salar)? – A field experiment
(Master thesis, 2018-06-26)Release of captive-reared fish to supplement reduced, wild populations has become a common tool for conservation and management. Such attempted population enhancements have, however, had limited success, and several previous ... -
Can fresh water diets influence recovery in Atlantic salmon post-smolts after SAV3 challenge in sea water?
(Master thesis, 2020-07-08)Pankreas sykdom (PD) forårsaket av salmonid alfavirus (SAV) er en betydelig utfordring i norsk oppdrettsnæring. Å undersøke om forskjeller i fôrsammensetning før overføring til sjøvann kan påvirke sykdommens progresjon og ... -
Can less be more? Effects of reduced frequency of surveys and stock assessments
(Peer reviewed; Journal article, 2016)Uncertain and inaccurate estimates are a prevailing problem in stock assessment, despite increasingly sophisticated estimation methods and substantial usage of scientific and financial resources. Annual scientific surveys ... -
Can snow depth be used to predict the distribution of the high Arctic aphid Acyrthosiphon svalbardicum (Hemiptera: Aphididae) on Spitsbergen?
(Peer reviewed; Journal article, 2011-10-13)Background: The Svalbard endemic aphid Acyrthosiphon svalbardicum (Heikinheimo, 1968) is host specific to Dryas octopetala L. ssp octopetala (Rosaceae). It has been hypothesized that the aphid is present on those areas ... -
“Candidatus Ethanoperedens,” a thermophilic genus of archaea mediating the anaerobic oxidation of ethane
(Journal article; Peer reviewed, 2020)Cold seeps and hydrothermal vents deliver large amounts of methane and other gaseous alkanes into marine surface sediments. Consortia of archaea and partner bacteria thrive on the oxidation of these alkanes and its coupling ... -
Captive breeding of European freshwater mussels as aconservation tool: A review
(Journal article; Peer reviewed, 2023)1. Freshwater mussels are declining throughout their range. Their importantecological functions along with insufficient levels of natural recruitment haveprompted captive breeding for population augmentation and questions ... -
Capturing big fisheries data: Integrating fishers’ knowledge in a web-based decision support tool
(Journal article; Peer reviewed, 2022-12-12)There is increasing interest in utilizing fishers’ knowledge to better understand the marine environment, given the spatial extent and temporal resolution of fishing vessel operations. Furthermore, fishers’ knowledge is ... -
Carbohydrate metabolism during vertebrate appendage regeneration: What is its role? How is it regulated? A postulation that regenerating vertebrate appendages facilitate glycolytic and pentose phosphate pathways to fuel macromolecule biosynthesis
(Peer reviewed; Journal article, 2014-01)We recently examined gene expression during Xenopus tadpole tail appendage regeneration and found that carbohydrate regulatory genes were dramatically altered during the regeneration process. In this essay, we speculate ... -
Carbon Bioavailability in a High Arctic Fjord Influenced by Glacial Meltwater, NE Greenland
(Peer reviewed; Journal article, 2017-06-08)The land-to-ocean flux of organic carbon is increasing in glacierized regions in response to increasing temperatures in the Arctic (Hood et al., 2015). In order to understand the response of the coastal ecosystem metabolism ... -
CarboSchools - et utvannet klimaprosjekt eller et forbilde for gode feltstudier i biologi. En casestudie av en biologiklasses erfaringer og utbytte knyttet til CarboSchools prosjektet.
(Master thesis, 2010-12-20)Sammendrag Internasjonale undersøkelser som TIMMS og PISA, samt søkertallene til høyere utdannelser har vist en negativ utvikling for realfagene både kunnskapsmessig og rekrutteringsmessig i løpet av 90-tallet og begynnelsen ... -
Carnivorous sponges of the Atlantic and Arctic Oceans. Phylogeny, taxonomy, distribution and microbial associations of the Cladorhizidae (Demospongiae, Poecilosclerida)
(Doctoral thesis, 2016-11-29)The sponges (phylum Porifera) are defined by the presence of an aquiferous system in which choanoflagellate cells create a current and filter water flowing through the sponge body. The carnivorous sponges represent the ... -
A case study of biofilter activation and microbial nitrification in a marine recirculation aquaculture system for rearing Atlantic salmon (Salmo salar L.)
(Peer reviewed; Journal article, 2020-09)Marine recirculation aquaculture system (RAS) is a prominent technology within fish farming. However, the nitrifying bacteria in the biofilter have low growth rates, which can make the biofilter activation a long and ... -
Catastrophic dynamics limit Atlantic cod recovery
(Peer reviewed; Journal article, 2019-03-13)Collapses and regime changes are pervasive in complex systems (such as marine ecosystems) governed by multiple stressors. The demise of Atlantic cod (Gadus morhua) stocks constitutes a text book example of the consequences ... -
Catch me if you can: How to recapture lumpfish using light as an attractant
(Journal article; Peer reviewed, 2020)The use of lumpfish in salmon farming allows the removal of sea lice all year round, without the use of chemicals or mechanical treatments. In Norway alone, around 31 million lumpfish are currently put into sea pens whereas ... -
Catch-and-release of Atlantic cod (Gadus morhua) in recreational fisheries
(Doctoral thesis, 2015-06-26)The role of recreational fisheries in the exploitation pressure on fish resources is increasingly recognized. This has led to the introduction of new harvest regulations for several European marine recreational fisheries. ... -
Catch-and-release of Atlantic cod (Gadus morhua): post-release behaviour of acoustically pretagged fish in a natural marine environment
(Peer reviewed; Journal article, 2014-10-07)Studying the sublethal effects of catch-and-release (C&R) is challenging, as there are several potential sources of bias. For example, if behavioural alterations immediately after the release event are to be studied, ... -
Cation‐π Interactions between Methylated Ammonium Groups and Tryptophan in the CHARMM36 Additive Force Field
(Peer reviewed; Journal article, 2019)Cation-π interactions between tryptophan and choline or trimethylated lysines are vital for many biological processes. The performance of the additive CHARMM36 force field against target quantum mechanical data is shown ... -
Caught in broad daylight: Topographic constraints of zooplankton depth distributions
(Peer reviewed; Journal article, 2019-05)For visual predators, sufficient light is critical for prey detection and capture. Because light decays exponentially with depth in aquatic systems, vertical movement has become a widespread strategy among zooplankton for ... -
Caught in the act: phenotypic consequences of a recent shift in feeding strategy of the shark barnacle Anelasma squalicola (Lovén, 1844)
(Peer reviewed; Journal article, 2016-03)Anelasma squalicola is a barnacle found attached to deep-water lantern sharks of the family Etmopteridae and is the only known cirriped on fish hosts. While A. squalicola is equipped with mouth and thoracic appendages ... -
Causes of Mortality and Loss of Lumpfish Cyclopterus lumpus
(Journal article; Peer reviewed, 2022)Data from research and commercial use of lumpfish were collected from the research facilities of Gifas (Inndyr, Northern Norway, 67.0° N, 14.0° E). The data were sourced from 12 main lumpfish groups subdivided into 66 ...