Blar i Department of Biological Sciences på emneord "VDP::Matematikk og Naturvitenskap: 400::Basale biofag: 470"
Viser treff 1-20 av 25
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Bat (Chiroptera) activity and community composition in contrasting agricultural landscapes and the adjacent Budongo forest reserve, Uganda
(Master thesis, 2010-06-01)Abstract. Human activities are causing a biodiversity crisis in all biomes of the Earth. As the world's population continues to grow, more land will be converted to agricultural land to meet the growing food demands, ... -
Brood size in a subsocial bark beetle breeding in live plants
(Master thesis, 2009-06-01)Maternal care is found in many insect species, and maternal care affects both offspring survival and growth significantly. The effect of maternal care was tested on the monogynous bark beetle Scolytodes gunnerae which ... -
Cladorhizid sponges from hydrothermal vents and cold seeps in the NE Atlantic Ocean
(Master thesis, 2009-09-30)Sponges are known to frequently contain a great number of symbiotic organisms. Symbiosis is also a characteristic trait of vent and seep animals worldwide. Sponges in the deep sea family Cladorhizidae, otherwise also known ... -
Co-infection with Norwegian Salmonid Alphavirus (NSAV) and Infectious Pancreatic Necrosis Virus (IPNV) in Chinook Salmon Embryo Cells (CHSE-214).
(Master thesis, 2009-06-02)Infectious pancreatic disease (IPN) and pancreas disease (PD) of salmon are viral diseases caused by Infectious Pancreatic Necrosis Virus (IPNV) (Birnaviridae) and Salmonid Alphavirus (SAV) (Togaviridae). Both IPNV- and ... -
Comparing species-temperature relationships of arctic-alpine plants among three altitudinal transects in Svalbard
(Master thesis, 2008)Broad scale data has normally been used to predict vascular plant species responses to global climate change. The aim of this study is to investigate to what extent a high sampling resolution reveals local variations among ... -
Digestive protease activities, growth and feed utilisation in Atlantic salmon (Salmo salar L.)
(Doctoral thesis, 2006-03-03)The specific activities of trypsin and chymotrypsin in the pyloric caeca were investigated in individually labeled Atlantic salmon (Salmo salar L.). Photoperiod (natural or 24 h) and feed protein quality (two levels of ... -
Effect of different filter methods on water quality to a marine scallop hatchery
(Master thesis, 2010-05-31)Water quality in marine hatcheries is a critical aspect in the production of spat. Different filtering methods have been used to treat the intake seawater in the hatcheries. The Scalpro AS hatchery uses two different types ... -
Empirical Support for Optimal Virulence in a Castrating Parasite
(Peer reviewed; Journal article, 2006-05-30)The trade-off hypothesis for the evolution of virulence predicts that parasite transmission stage production and host exploitation are balanced such that lifetime transmission success (LTS) is maximised. However, the ... -
Functional analysis of tilS homologues in Bacteria and Archaea
(Master thesis, 2005-09-09)Out of all of the microorganisms sequenced so far about one third of the genes have unknown function. Several studies have shown that information on evolutionary relationships between unknown genes can aid in the prediction ... -
Genomic Insights into Methanotrophy: The Complete Genome Sequence of Methylococcus capsulatus (Bath)
(Peer reviewed; Journal article, 2004-09-21)Methanotrophs are ubiquitous bacteria that can use the greenhouse gas methane as a sole carbon and energy source for growth, thus playing major roles in global carbon cycles, and in particular, substantially reducing ... -
Geographical and management related factors affecting lambs of outwintered sheep along the west coast of Norway. A baseline study in the research project feral sheep in coastal heats - developing a sustainable local industry in vulnerable cultural landscapes
(Master thesis, 2008)The Ancient Norse breed of outwintered sheep (ANBOS/Feral sheep) are the traditional sheep of Norwegian coastal heathlands, an open semi-natural landscape now threatened by regrowth due to cessation of management. One of ... -
Germination ecology of the clonal grassland herb Knautia arvensis: Regeneration strategy and geographic variation.
(Peer reviewed; Journal article, 2003)We investigated germination responses and seed recruitment in the clonal grassland herb Knautia arvensis (Dipsacaceae) throughout the species’ distributional range in Norway. Four predicted relationships between germination ... -
The Hfq RNA chaperone in the deep-branching Thermotogales lineage: Attempts to reveal its biological role
(Master thesis, 2015-02-01)Bacteria frequently use small RNAs (sRNAs) as part of their regulation of gene expression at the post-transcriptional level. Many of these sRNAs have been shown to depend on the RNA chaperone protein Hfq for their regulatory ... -
Instar growth and Development of Lepeophtheirus salmonis Copepodids.
(Master thesis, 2009-05-07)Salmon louse Lepeophtheirus salmonis, (Krøyer, 1837) is a caligid parasite, responsible for major economical loss and welfare issues in Norwegian marine culture of salmonid species. Infections are mainly controlled with ... -
Marine mimivirus relatives are probably large algal viruses
(Peer reviewed; Journal article, 2008-01-23)Background Acanthamoeba polyphaga mimivirus is the largest known ds-DNA virus and its 1.2 Mb-genome sequence has revealed many unique features. Mimivirus occupies an independent lineage among eukaryotic viruses and its ... -
Modeling early life history of cod
(Doctoral thesis, 2007-03-02)Newly hatched Atlantic cod (Gadus morhua) larvae face an uncertain future when they first enter their marine pelagic habitat. Prior to complete yolk absorption, the larvae will have to find food. This process includes the ... -
Nutrigenomic study of lipid metabolism in Atlantic salmon (Salmo salar L.) : the effects of dietary plant oil inclusion
(Doctoral thesis, 2006-09-08)The two dietary trials conducted in the present study (Papers I-III) used dietary rapeseed oil fed in a regression design and a full plant oil blend replacement for fish oil, respectively. The metabolic response of Atlantic ... -
Pathways of Carbon Assimilation and Ammonia Oxidation Suggested by Environmental Genomic Analyses of Marine Crenarchaeota
(Peer reviewed; Journal article, 2006-03-21)Marine Crenarchaeota represent an abundant component of oceanic microbiota with potential to significantly influence biogeochemical cycling in marine ecosystems. Prior studies using specific archaeal lipid biomarkers and ... -
Phylogeny, Taxonomy and Evolution of the Astrophorida (Porifera, Demospongiae)
(Doctoral thesis, 2010-06-04)The Astrophorida (Porifera, Demospongiae) currently represent ca 660 extant species worldwide. In tropical and parts of warm temperate waters they are common at quite shallow depths, while in boreal/antiboreal and Arctic ... -
The Preen Gland - an Organ for Excretion of Persistent Organic Pollutants in Black-legged Kittiwake (Rissa tridactyla)
(Master thesis, 2010-06-01)Persistent organic pollutants (POPs) constitute a chemically diverse group of lipophilic substances that may accumulate in living organisms, often with harmful effects. To some extent these substances may be expelled via ...