Blar i Department of Biological Sciences på tittel
Viser treff 1356-1375 av 2290
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Mercury in fish from the North East Atlantic: sources, bioaccumulation dynamics and co-occurrence with selenium
(Doctoral thesis, 2019-09-26)Mercury (Hg) is a global neurotoxin distributed at trace levels in the earth’s crust. Although Hg input from anthropogenic sources has been reduced in North America and Europe, in some other parts of the world the emission ... -
Mesenterial adult stem-like cells as a potential source of germinal and somatic lineages in a sea anemone
(Doctoral thesis, 2023-06-09)Adulte stamceller (ASC) opprettholder vekst og homeostase gjennom hele livet til dyr ved kontinuerlig å tilføre nye celler til organismen. ASC-er har blitt godt karakterisert i vertebrat-, nematode- og insektmodeller, som ... -
Mesopelagic sound scattering layers and possible explanations for their diel variations in Bjørnafjorden, western Norway
(Master thesis, 2018-12-19)This thesis investigates the diel variations in mesopelagic acoustic scattering layers in Bjørnafjorden (60° 5' N 5° 23'E), western Norway. The main objective was to map these scattering layers and investigate possible ... -
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 pathways and physiological functions of organic and inorganic trace minerals in Atlantic Salmon
(Doctoral thesis, 2024-09-05)Mineralernæring spiller en nøkkelrolle for helse, velferd og prestasjonen til oppdrettet Atlantisk laks (Salmo salar), da den påvirker ulike fysiologiske prosesser, avgjørende for vekst, metabolisme og immunfunksjon. Blant ... -
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 ...