Blar i Department of Biological Sciences på tittel
Viser treff 1312-1331 av 2219
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Mesozooplankton distribution in Svalbard waters. Calanus spp. and its relationship to hydrographic variability
(Doctoral thesis, 2008-02-06)This thesis investigates mesozooplankton abundance, composition and distribution in Svalbard waters in relation to hydrography. Sampling was carried out in the archipelago of Svalbard mainly during summer and autumn between ... -
A meta-analysis on the nutritional value of insects in aquafeeds
(Journal article; Peer reviewed, 2021)A major challenge for development of sustainable aquafeeds is its dependence on fish meal and fish oil. Similarly, it is unwanted to include more plant ingredients which adds more pressure on resources like arable land, ... -
Metabolic disorders: role of pregnane X receptor, fibroblast growth factor 19 and persistent organic pollutants
(Doctoral thesis, 2020-06-08)The incidence of obesity and correlated metabolic abnormalities has increased dramatically in the last decades and constitutes a huge burden on healthcare systems and economies. It is therefore important to increase our ... -
Metabolic rates, feed intake, appetite control, and gut transit of clownfish Amphiprion ocellaris exposed to increased temperature and limited feed availability
(Journal article; Peer reviewed, 2022)Episodes of elevated temperature, combined with lower feed availability, are among the predicted scenarios of climate change representing a challenge for coral reef fish. We investigated the response of clownfish (Amphiprion ... -
Metabolic rates, swimming capabilities, thermal niche and stress response of the lumpfish, cyclopterus lumpus
(Peer reviewed; Journal article, 2018-09-03)The lumpfish (Cyclopterus lumpus) is a semi-pelagic globiform teleost native to the North Atlantic with a ventral suction disc that allows for attachment onto surfaces. Some local populations are in decline and the species ... -
Metagenome-based analysis of the functional potential of a marine sediment community dominated by ANME-2c
(Master thesis, 2015-10-26)Methane is the most abundant hydrocarbon in the atmosphere and after CO2; it contributes for 14% of global greenhouse gas emissions. Marine sediments are a large reservoir of methane where approximately 80% of the methane ... -
Metagenomic analysis of ammonia-oxidizing archaea affiliated with the soil group
(Peer reviewed; Journal article, 2012-06-20)Ammonia-oxidizing archaea (AOA) have recently been recognized as a significant compo- nent of many microbial communities and represent one of the most abundant prokaryotic groups in the biosphere. H owever, only few AOA ... -
Metagenomics-driven predictions in Archaea from hydrocarbon-rich Arctic hydrothermal systems: Phylogenetic and metabolic analyses of methane and short-chain alkane-degrading lineages
(Doctoral thesis, 2023-04-14)Metan og hydrokarboner er potente klimagasser som produseres og nedbrytes hovedsakelig biotisk. I havet akkumuleres metan og hydrokarboner i sedimenter og hydrotermiske systemer. Nylige metagenomstudier har utvidet mangfoldet ... -
Metapopulation dynamics and behaviour of Atlantic herring (Clupea harengus L.) in a small semi-enclosed ecosystem
(Doctoral thesis, 2013-12-12) -
Metapopulation dynamics in Atlantic herring (Clupea harengus L.) along the coast of southern Norway and in the local area of Landvikvannet
(Master thesis, 2013-06)The present thesis provides strong indications for metapopulation dynamics occurring in Atlantic herring (Clupea harengus) along the Norwegian south coast. The evidence stems from analyses of population structure, growth, ... -
Methanogenic archaea in Arctic soils from Spitsbergen, Norway (78°N)
(Doctoral thesis, 2006-05-16) -
Methionine deficiency does not increase polyamine turnover through depletion of hepatic S-adenosylmethionine in juvenile Atlantic salmon
(Peer reviewed; Journal article, 2014-10)During the last few decades, plant protein ingredients such as soya proteins have replaced fishmeal in the diets of aquacultured species. This may affect the requirement and metabolism of methionine as soya contains less ... -
Method development and analysis of arsenolipids in marine oils
(Doctoral thesis, 2014-05-19)Arsenic in marine oils is mainly present in the form of lipid-soluble compounds; collectively called arsenolipids. Although total arsenic concentrations in marine oils typically range from 0.2 to 16 mg kg-1 [1-3], knowledge ... -
Method for cryopreservation of Paramoeba perurans
(Journal article; Peer reviewed, 2020-11-07)Paramoeba perurans causes amoebic gill disease (AGD), which is a major problem in aquaculture worldwide. The parasite can be cultured in vitro, but to this date, no method for long-term storage of the clones exists. In ... -
A methodological guide to observe local-scale geodiversity for biodiversity research and management
(Journal article; Peer reviewed, 2022)Current global environmental change calls for comprehensive and complementing approaches for biodiversity conservation. According to recent research, consideration of the diversity of Earth's abiotic features (i.e. ... -
Methods for acoustic identification and measurements of copepod abundance at specific North Sea sandeel grounds
(Master thesis, 2011-04-15)In recent years there has been a decline in both size and the geographical distribution of the sandeel stock. The decline has been particularly profound in the Norwegian economic zone where the sandeel play an important ... -
Methods for tagging an ectoparasite, the salmon louse Lepeophtheirus salmonis
(Journal article; Peer reviewed, 2024)Monitoring individuals within populations is a cornerstone in evolutionary ecology, yet individual tracking of invertebrates and particularly parasitic organisms remains rare. To address this gap, we describe here a method ... -
The Methylococcus capsulatus (Bath) Secreted Protein, MopE*, Binds Both Reduced and Oxidized Copper
(Peer reviewed; Journal article, 2012-08-20)Under copper limiting growth conditions the methanotrophic bacterium Methylococcus capsulatus (Bath) secrets essentially only one protein, MopE*, to the medium. MopE* is a copper-binding protein whose structure has been ... -
Microalgal Bioprospecting. Spore swelling and germination as a bioassay for the rapid screening of crude algal extracts for antifungal activity
(Master thesis, 2006)Microalgae and cyanobacteria has trough the last couple of decades been increasingly recognized as a valuable source of a variety of bioactive compounds. Many species have been investigated, but these represent mostly ... -
MICROBIAL COLONIZATION AND COMMUNITY SHIFTS IN A MARINE POST-SMOLT RAS DURING THE FIRST YEAR OF OPERATION AS ANALYZED BY DEEP SEQUENCING
(Master thesis, 2019-12-13)Resirkulering akvakultur systemer (RAS) teknologi for ferskvannsproduksjon av smolt ble for første gang brukt med marint vann for post-smolt påvekst, dvs. påvekst 100-500 gram i tre måneder. Mikrobiell dypsekvensering av ...