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Evidence for Mito-Nuclear and Sex-Linked Reproductive Barriers between the Hybrid Italian Sparrow and Its Parent Species 
Trier, Cassandra Nicole; Hermansen, Jo Skeie; Sætre, Glenn-Peter; Bailey, Richard Ian (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2014)
Studies of reproductive isolation between homoploid hybrid species and their parent species have rarely been carried out. Here we investigate reproductive barriers between a recently recognized hybrid bird species, the ...
Density-dependence in space and time: Opposite synchronous variations in population distribution and body condition in the baltic sea sprat (Sprattus sprattus) over three decades 
Casini, Michele; Rouyer, Tristan Alexander; Bartolino, Valerio; Larson, Niklas; Grygiel, Wlodzimierz (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2014)
Spatio-temporal density-dependent processes are crucial regulatory factors for natural populations. However, there is a lack of studies addressing spatial density-dependence in fish growth. A previous investigation has ...
Climate Change and Genetic Structure of Leading Edge and Rear End Populations in a Northwards Shifting Marine Fish Species, the Corkwing Wrasse (Symphodus melops) 
Knutsen, Halvor; Jorde, Per Erik; Blanco Gonzalez, Enrique; Robalo, Joana I.; Albretsen, Jon; Almada, Vitor C. (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2013)
One mechanism by which marine organisms may respond to climate shifts is range shifts. The corkwing wrasse (Symphodus melops) is a temperate fish species, inhabiting the coasts of Europe, that show strong indications of ...
CMG-Biotools, a Free Workbench for Basic Comparative Microbial Genomics 
Vesth, Tammi; Lagesen, Karin; Acar, Öncel; Ussery, David (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2013)
Background: Today, there are more than a hundred times as many sequenced prokaryotic genomes than were present in the year 2000. The economical sequencing of genomic DNA has facilitated a whole new approach to microbial ...
Cranium size and fitness measures in a wild population of great tits (Parus major) 
Dreyer, Stine (Master thesis / Masteroppgave, 2012)
This study consists of two parts. In the first part, a method of measuring cranium size of great tits was developed, and in the second part cranium size was compared with measures of fitness, namely winter survival and ...
Temporal variation of arctic marine picophytoplankton focusing on Micromonas pusilla (Mamiellophyceae) 
Christensen, Lene (Master thesis / Masteroppgave, 2012)
Arctic ecosystems are strongly seasonal by nature, and photosynthetic organisms in particular so. In this study, the seasonality of one of the most commonly found marine photosynthetic picoeukaryotes, Micromonas pusilla, ...
Demography, habitat suitability modelling and local ecological knowledge of European lobster (Homarus gammarus (L.)) in coastal Skagerrak : valuable tools in identifying potential marine reserves? 
Haugland, Jon Kristian (Master thesis / Masteroppgave, 2012)
The use of species habitat suitability (HS) modelling is increasing as an approach in detecting important areas in integrated coastal zone management. European lobster (Homarus gammarus) is currently listed as near threatened ...
The role of interspecific competition and hybridization in phenotipic evolution of Passer sparrows 
Rojas, Maria Fernanda Gonzalez (Master thesis / Masteroppgave, 2012)
Interactions between closely related species, including resource competition and hybridization, might influence phenotypic evolution and play a significant role in evolutionary diversification. There may be different ...
Humoral immunity and oxidative stress in black-legged kittiwake ( 
Lindsøe, Lisa Maria (Master thesis / Masteroppgave, 2012)
Organochlorines can possibly cause toxic effects in birds. In this thesis, levels and relationships between health parameters, organochlorine contaminants (OCs) and body condition index (BCI) in black-legged kittiwakes and ...
Hosts and pathogens of Ixodes ricinus in Norway 
Lybæk, Susanna (Master thesis / Masteroppgave, 2012)
Ticks are vectors for a number of infectious diseases, and an understanding of their ecology is valuable for minimising the risk of human and livestock infections. The aim of this study was to identify the previous hosts ...
Population structure of bowhead whales (balaena mysticetus) in Disko Bay, west Greenland 
Rekdal, Silje Larsen (Master thesis / Masteroppgave, 2012)
Skin biopsies of bowhead whales (Balaena mysticetus) were sampled during the spring aggregation in Disko Bay, West Greenland, over a period of 13 years, and analyzed regarding gender and genetic diversity at the mitochondrial ...
What is maintaining variation in personalities in wild populations of great tits and blue tits? 
Andersen, Merethe (Master thesis / Masteroppgave, 2012)
It is now commonly recognized that animals have different personalities and that these personalities are moderately heritable, repeatable, and may influence fitness components such as survival and reproduction. Much of ...
Movement, spillover and gene flow within a network of northern marine reserves 
Huserbråten, Mats (Master thesis / Masteroppgave, 2012)
The lack of empirical knowledge on how marine reserves should be effectively designed has impeded their extensive implementation as fisheries management tools. While current knowledge is largely based on computer models, ...
Feedback processes in grazing ecosystems : Are sheep grazing in alpine habitats affecting long term use and productivity? 
Blix, Anna (Master thesis / Masteroppgave, 2012)
Large herbivores and their grazing impact is an important subject in ecology. It is well known that grazing shapes the structure, diversity and functioning of terrestrial ecosystems, but how the level of density dependence ...
Conservation genetics and ecology of four red listed vascular plant species in the high arctic archipelago of Svalbard 
Skjetne, Idunn Elisabeth (Master thesis / Masteroppgave, 2012)
Nearly one third of the vascular plant species of the remote high arctic archipelago of Svalbard are listed on the regional Red List for Svalbard, and there is a need for information to evaluate their conservation status, ...
The effect of light and temperature on lipid production in microalgae 
Stigum, Vetle Malmer (Master thesis / Masteroppgave, 2012)
Background: In the search for a renewable energy, micro algae have been proposed as a promising source of lipids that can be used to produce biodiesel. Method: Three species of marine microalgae, Isochrysis, Pavlova and ...
Effekter av miljøgifter på torsk (Gadus morhua) fra indre Oslofjord 
Bergland, Kristoffer G. (Master thesis / Masteroppgave, 2012)
Organismer som lever i Oslofjordeneksponeres for kjemikalier som kan ha negative effekter. I denne undersøkelsen ble biomarkører for effekter fra eksponering for miljøgifter og kondisjonsindekser nøkkelarten torsk (Gadus ...
Reparasjon av oksidative DNA-skader i spermatogonier og sertoliceller fra neonatale mus 
Roksvåg, Kirsti (Master thesis / Masteroppgave, 2012)
Levende organismer er kontinuerlig utsatt for påvirkninger som kan skade DNA. Dette inkluderer oksidative DNA-skader som oppstår via normal metabolisme i cellene og fra en rekke miljøkjemikalier. Reparasjon av oksidative ...
Nematode infestation in flatfish in the outer Oslofjord 
Raamat, Karin (Master thesis / Masteroppgave, 2012)
Nematodes from 361 fish from 15 species were collected between August 2010 and March 2012 at Langøya and at Torbjørnskjær in the outer Oslofjord. The study focused on the infection levels of the three most abundant nematode ...
The enigmatic Bale monkey: can new analyses shed light on the phylogeny of the Chlorocebus genus? 
Bjørnæs, Ane Mari (Master thesis / Masteroppgave, 2012)
Bale-apen (Chlorocebus djamdjamensis) er en lite kjent, endemisk primat fra det etiopiske høylandet. Apen er klassifisert som "Vulnerable" under IUCNs Rødliste for truede arter, og er truet av et stadig økende antropogent ...
DNA damage in Atlantic cod (Gadus Morhua) tissues 
Njah, Relindis Ghai (Master thesis / Masteroppgave, 2012)
Aquatic organisms are exposed to more or less continuous inputs of a wide range of potentially hazardous substances. The sources of the substances could be natural and/ or anthropogenic. This exposure may have deleterious ...
Seasonal abundance and distribution of gelatinous zooplankton in Oslofjorden, Norway : An ecological snapshot 
Selsø, Katrine (Master thesis / Masteroppgave, 2012)
Gelatinøs dyreplankton regnes som nøkkelarter i pelagiske økosystem. Populasjonene varierer med sesong, tilgang på byttedyr og hydrografiske forhold og de former ofte store oppblomstringer som antas å ha negative, ...
A current absence of neonaticide in Norway 
Ottesen, Vibeke (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2012)
The present study is the first attempt to explore the rate, characteristics and legal reactions to neonaticide in Norway during the years 1990 – 2009. Potential incidents of neonaticide were identified through the national ...
Metagenomic and geochemical characterization of pockmarked sediments overlaying the Troll petroleum reservoir in the North Sea 
Håvelsrud, Othilde E; Haverkamp, Thomas H; Kristensen, Tom; Jakobsen, Kjetill S; Rike, Anne G (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2012)
Background Pockmarks (depressions in the seabed) have been discovered throughout the world’s oceans and are often related to hydrocarbon seepage. Although high concentrations of pockmarks are present in ...
A Migratory Northern Ungulate in the Pursuit of Spring: Jumping or Surfing the Green Wave? 
Bischof, Richard; Loe, Leif Egil; Meisingset, Erling L.; Zimmermann, Barbara; Van Moorter, Bram; Mysterud, Atle (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2012)
The forage-maturation hypothesis (FMH) states that herbivores migrate along a phenological gradient of plant development in order to maximize energy intake. Despite strong support for the FMH, the actual relationship between ...
Factors affecting deer ked (Lipoptena cervi) prevalence and infestation intensity in moose (Alces alces) in Norway 
Madslien, Knut; Ytrehus, Bjørnar; Viljugrein, Hildegunn; Solberg, Erling J; Bråten, Kent R; Mysterud, Atle (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2012)
Background The deer ked (Lipoptena cervi), a hematophagous ectoparasite of Cervids, is currently spreading in Scandinavia. In Norway, keds are now invading the south-eastern part of the country and the ...
Massive expansion of the calpain gene family in unicellular eukaryotes 
Zhao, Sen; Liang, Zhe; Demko, Viktor; Wilson, Robert; Johansen, Wenche; Olsen, Odd-Arne; Shalchian-Tabrizi, Kamran (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2012)
Background Calpains are Ca2+-dependent cysteine proteases that participate in a range of crucial cellular processes. Dysfunction of these enzymes may cause, for instance, life-threatening diseases in humans, ...
Lung Carcinogenesis - chemically induced in vitro transformation of human bronchial epithelial cells 
Sjøberg, Mari (Master thesis / Masteroppgave, 2012)
Abstract An in vitro premalignant transformation model was established to investigate molecular changes during early lung carcinogenesis. hTERT/Cdk4-immortalized human bronchial epithelial cells (HBECs), harboring few ...
Genotoksisitet av 5-hydroxymetylfurfural i transgene LacZ mus med mutasjon i adenomatøs polyposis coli 
Jørgensen-Kaur, Lena (Master thesis / Masteroppgave, 2012)
5-hydroxymethylfurfural (HMF) is formed in the Maillard reaction when reduced sugars are heated in the presence of amino acids or proteins. It can also be formed during direct thermal dehydration of fructose and sucrose, ...
The breeding system of the European grayling (Thymallus thymallus) : a genetic perspective 
Haddeland, Peter Jørgen T. (Master thesis / Masteroppgave, 2012)
Breeding systems for species with cryptic lives are difficult to examine in nature based on purely observational studies. In this study, a genetic approach was used to investigate the breeding system of a population of a ...
RNA expression in sperm as markers of sperm-quality 
Kildemo, Hanne (Master thesis / Masteroppgave, 2012)
Radiation and speciation of the grasshopper genera Parasphena and Gymnobothroides in the East-African mountains 
Sætre, Helene LoCascio (Master thesis / Masteroppgave, 2012)
When Naked Became Armored: An Eight-Gene Phylogeny Reveals Monophyletic Origin of Theca in Dinoflagellates 
Orr, Russell; Murray, Shauna A.; Stüken, Anke; Rhodes, Lesley; Jakobsen, Kjetill Sigurd (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2012)
The dinoflagellates are a diverse lineage of microbial eukaryotes. Dinoflagellate monophyly and their position within the group Alveolata are well established. However, phylogenetic relationships between dinoflagellate ...
Toxicity, autecology and DNA content in the marine flagellate Pseudochattonella (Dictyochophyceae, Heterokonta) 
Skjelbred, Birger (Doctoral thesis / Doktoravhandling, 2012)
Phytoplankton is main producers of marine pelagic food webs, acting as link between the energy source, the sun, and consumers. Phytoplankton is an evolutionary diverse group whick is, however, traditionally assembled due ...
Habitat Association and Seasonality in a Mosaic and Bimodal Hybrid Zone between Chorthippus brunneus and C. jacobsi (Orthoptera: Acrididae) 
Bailey, Richard Ian; Saldamando-Benjumea, Clara I.; Tatsuta, Haruki; Butlin, Roger K. (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2012)
Understanding why some hybrid zones are bimodal and others unimodal can aid in identifying barriers to gene exchange following secondary contact. The hybrid zone between the grasshoppers Chorthippus brunneus and C. jacobsi ...
Harvest selection on Atlantic cod behavioral traits: implications for spatial management 
Olsen, Esben Moland; Heupel, Michelle R.; Simpfendorfer, Colin A.; Moland, Even (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2012)
Harvesting wild populations may contrast or reinforce natural agents of selection and potentially cause evolutionary changes in life-history traits such as growth and maturation. Harvest selection may also act on behavioral ...
Prevalence of tick borne encephalitis virus in tick nymphs in relation to climatic factors on the southern coast of Norway 
Andreassen, Åshild Kristine; Jore, Solveig; Cuber, Piotr; Dudman, Susanne Gjeruldsen; Tengs, Torstein; Isaksen, Ketil; Hygen, Hans Olav; Viljugrein, Hildegunn; Ånestad, Gabriel; Ottesen, Preben; Vainio, Kirsti (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2012)
Background: Tick-borne encephalitis (TBE) is among the most important vector borne diseases of humans in Europe and is currently identified as a major health problem in many countries. TBE endemic zones have expanded over ...
Nuisance growth of Juncus bulbosus in lakes and rivers : experimental and observational studies 
Moe, Therese Fosholt (Doctoral thesis / Doktoravhandling, 2012)
Nuisance growth of the aquatic macrophyte Juncus bulbosus has been observed since the 1980s in an increasing number of rivers and lakes in northern Europe. What causes such massive growth is not well understood, however, ...
Diversity and community composition of root-associated fungi explored by high throughput sequencing 
Blaalid, Rakel (Doctoral thesis / Doktoravhandling, 2012)
Interactions between plant roots and fungi are well known from most terrestrial ecosystems. Mycorrhizal association is the most prominent plant-fungi interaction, where the fungal partners increase the water and nutrient ...
Contemporary ocean warming and freshwater conditions are related to later sea age at maturity in Atlantic salmon spawning in Norwegian rivers 
Villar, Jaime Otero; Jensen, Arne Johan; L'abee-Lund, Jan Henning; Stenseth, Nils Christian; Storvik, Geir Olve; Vøllestad, Leif Asbjørn (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2012)
Atlantic salmon populations are reported to be declining throughout its range, raising major management concerns. Variation in adult fish abundance may be due to variation in survival, growth, and timing of life history ...
Genome Fragmentation Is Not Confined to the Peridinin Plastid in Dinoflagellates 
Espelund, Mari; Minge, Marianne Aastebøl; Gabrielsen, Tove M; Nederbragt, Alexander Johan; Shalchian-Tabrizi, Kamran; Otis, Christian; Turmel, Monique; Lemieux, Claude; Jakobsen, Kjetill Sigurd (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2012)
When plastids are transferred between eukaryote lineages through series of endosymbiosis, their environment changes dramatically. Comparison of dinoflagellate plastids that originated from different algal groups has revealed ...
An analysis of the population structure of white whales (Delphinapterus leucas) in Svalbard 
Fløystad, Ida Marie Bardalen (Master thesis / Masteroppgave, 2012)
White whales are found all around Svalbard, but their population structure in this area is unknown. A recent study using telemetry showed that the animals tagged in the Van Keulen/Van Mijenfjorden and Storfjorden in the ...
Alterations of microbiota in urine from women with interstitial cystitis 
Siddiqui, Huma; Lagesen, Karin; Nederbragt, Alexander J; Jeansson, Stig L; Jakobsen, Kjetill S (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2012)
Background Interstitial Cystitis (IC) is a chronic inflammatory condition of the bladder with unknown etiology. The aim of this study was to characterize the microbial community present in the urine from ...
Annual cycle of Pseudo-nitzschia species in Outer Oslofjorden, Norway 
Hostyeva, Vladyslava; Eikrem, Wenche; Edvardsen, Bente; Hasle, Grethe Rytter (Chapter / Bokkapittel / PublishedVersion; Peer reviewed, 2012)
In: Pagou, P. and Hallegraeff, G. (eds). Proceedings of the 14th International Conference on Harmful Algae. International Society for the Study of Harmful Algae and Intergovernmental Oceanographic Commission of UNESCO ...
Field testing for toxic algae with a microarray: initial results from the MIDTAL project 
McCoy, Gary; Raine, Robin; Medlin, Linda K.; Chen, Jixin; Kooistra, Wiebe; Barra, Luciana; Ruggiero, MariaValeria; Graneli, Edna; Hagström, Johannes; Salomon, Paolo; Reguera, Beatrize; Rodriguez, Fernandes; Escalera, Laura; Edvardsen, Bente; Dittami, Simon; Eikrem, Wenche; Lewis, Jane; Berzano, Marco; Christopher, Elliott; Campbel, Katrina; Pazos, Yolanda (Chapter / Bokkapittel / PublishedVersion; Peer reviewed, 2012)
In: Pagou, P. and Hallegraeff, G. (eds). Proceedings of the 14th International Conference on Harmful Algae. International Society for the Study of Harmful Algae and Intergovernmental Oceanographic Commission of UNESCO 2012 ...
Rare to be warm in Svalbard: An ecological and genetic snapshot of four red listed plant species 
Birkeland, Siri (Master thesis / Masteroppgave, 2012)
Climate change is emerging as the most far reaching and significant stressor on Arctic biodiversity and it is predicted that it will lead to large changes in distributions, geographical ranges and abundances of species. ...
Nematode infection in harbour seal (Phoca vitulina) at two sites; Sandøy and Hvaler archipelago, Norway 
Johansen, Julie Døvle (Master thesis / Masteroppgave, 2012)
The aim of this study was to investigate the species composition of stomach nematodes in harbour seals, and determine if heart- and lung worms are present in the populations in the two areas Sandøy and Hvaler. The results ...
Effects of phosphorus limitation and temperature changes on the life history of Daphnia magna 
Rosnes, Marte K (Master thesis / Masteroppgave, 2012)
The elements carbon (C), nitrogen (N) and phosphorus (P) are the most important constituents of essential biomolecules. P is a crucial element in ribosomal ribonucleic acid (RNA) is indirectly responsible for protein ...
The effect of marinas on the infaunal communities in Zostera marina meadows and in unvegetated sediments 
Sømme, Hans Olav (Master thesis / Masteroppgave, 2012)
The aim of this study was to investigate the effects from marinas on infaunal communities in Zostera marina meadows and in adjacent unvegetated sediments. The results from the study showed that Z. marina meadows supported ...
The influence of mechanical habitat disturbance on the infauna of Zostera marina L. meadows 
Silberberger, Marc Jürgen (Master thesis / Masteroppgave, 2012)
Eelgrass (Zostera marina) meadows are a common feature in shallow waters along the Norwegian coast, where they provide a habitat for an infaunal community with a high biodiversity. A field experiment, comprised of two ...
Increased divergence but reduced variation on the Z chromosome relative to autosomes in Ficedula flycatchers: differential introgression or the faster-Z effect? 
Hogner, Silje; Sæther, Stein Are; Borge, Thomas; Bruvik, Torbjørn; Johnsen, Arild; Sætre, Glenn-Peter (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2012)
Recent multilocus studies of congeneric birds have shown a pattern of elevated interspecific divergence on the Z chromosome compared to the autosomes. In contrast, intraspecifically, birds exhibit less polymorphism on the ...
Begroingsalger i utløpselvene fra Finsevatn og Flakavatn Restricted Access
Værøy, Nina (Master thesis / Masteroppgave, 2012)
Studier av begroingsalger er et viktig verktøy for miljøovervåkning av vassdrag. Begroingsalgene kan gi rask og nyttig informasjon om endringer i akvatiske habitater. Studieobjektene i dette arbeidet er utløpselvene fra ...
Using 454 sequencing for exploring diversity, host specificity and tissue specificity of the fungal genus Galerina associated with four boreal mosses 
Heimdal, Rune (Master thesis / Masteroppgave, 2012)
Bryophytes are a dominant vegetation component of the boreal forest, and an important part of the ecosystem, yet little is known about the microbial community associated with them. The aims of this thesis were 1) to analyze ...
Spatial Structure and Climatic Adaptation in African Maize Revealed by Surveying SNP Diversity in Relation to Global Breeding and Landrace Panels 
Westengen, Ola Tveitereid; Berg, Paul Ragnar; Kent, Matthew Peter; Brysting, Anne Krag (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2012)
Background: Climate change threatens maize productivity in sub-Saharan Africa. To ensure food security, access to locally adapted genetic resources and varieties is an important adaptation measure. Most of the maize grown ...
Northern refugia and recent expansion in the North Sea: the case of the wrasse Symphodus melops (Linnaeus, 1758) 
Robalo, Joana I.; Castilho, Rita; Francisco, Sara M.; Almada, Frederico; Knutsen, Halvor; Jorde, Per Erik; Pereira, Ana M.; Almada, Vitor C. (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2012)
Pleistocene climate changes have imposed extreme conditions to intertidal rocky marine communities, forcing many species to significant range shifts in their geographical distributions. Phylogeographic analyses based on ...
Risk map and spatial determinants of pancreas disease in the marine phase of Norwegian Atlantic salmon farming sites 
Tavornpanich, Saraya; Paul, Mathilde; Viljugrein, Hildegunn; Abrial, David; Jimenez, Daniel Delgado; Brun, Edgar (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2012)
Background: Outbreaks of pancreas disease (PD) greatly contribute to economic losses due to high mortality, control measures, interrupted production cycles, reduced feed conversion and flesh quality in the aquaculture ...
No Evidence for Pre-Copulatory Sexual Selection on Sperm Length in a Passerine Bird 
Lifjeld, Jan Terje; Laskemoen, Terje; Kleven, Oddmund; Pedersen, Anne Tiril Myhre; Lampe, Helene M.; Rudolfsen, Geir; Schmoll, Tim; Slagsvold, Tore (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2012)
There is growing evidence that post-copulatory sexual selection, mediated by sperm competition, influences the evolution of sperm phenotypes. Evidence for pre-copulatory sexual selection effects on sperm traits, on the ...
Impact of Nesting Mortality on Avian Breeding Phenology: A Case Study on the Red-Backed Shrike (Lanius collurio) 
Husek, Jan; Weidinger, Karel; Adamik, Peter; Slagsvold, Tore (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2012)
The seasonal timing of avian reproduction is supposed primarily to coincide with favourable feeding conditions. Long-term changes in avian breeding phenology are thus mostly scrutinized in relation to climatic factors and ...
Bio-optical estimates of primary productivity in scandinavian lakes 
Thrane, Jan-Erik (Master thesis / Masteroppgave, 2012)
Introduction: The absorption of photons in the water column of a lake can generally be attributed to four main components: algae, dissolved organic matter (DOM), non-living particulate organic matter (detritus), and the ...
Size change in brachiopods and trilobites of the Oslo Region during the Ordovician and during the Ordovician-Silurian transition. Evidence of Cope´s Rule and the Lilliput Effect? 
Sigurdsen, Are (Master thesis / Masteroppgave, 2012)
Studies of size trends have increased in recent times. This work continues a growing number of studies of the Ordovician and the Ordovician-Silurian transition. The Ordovician is a period of Earth`s history with severe ...
Mussel (Mytilus edulis) hemocytes for in vitro testing 
Antoun, Selvea W. (Master thesis / Masteroppgave, 2011)
Abstract Mytilus edulis is one of the most abundant and widely distributed benthic invertebrate species found in the North Atlantic. The aim of this study was to test the applicability of hemocytes from Mytilus edulis for ...
Ciliate and phytoplankton species composition in the sea-surface microlayer in the outer Oslofjord 
Dindar-Safa, Roya (Master thesis / Masteroppgave, 2011)
Abstract The sea-surface microlayer is the boundary layer between the water of the oceans and the atmosphere occupying approximately “1000 micrometer” uppermost part of the sea-surface microlayer (SML) (Liss and Duce, ...
Effects of pleiotropy on the response to selection: : Achieving evolvability in a simulated struggle for existence 
Solvin, Thomas Mørtvedt (Master thesis / Masteroppgave, 2011)
The independent evolution of different quantitative traits is often thought to require a modular structure of the genotype-phenotype map (GP map). In that context, pleiotropy is considered a constraint on adaptive evolution. ...
Diversitet av nano- og pikoplanteplankton i den atlantiske delen av Sørishavet, undersøkt med molekylærbiologiske metoder og bruk av numeriske likhets- og artsrikhetsanalyser. 
Nersveen, Lars (Master thesis / Masteroppgave, 2011)
Svepe agellater (Haptophyta) er en utbredt planteplanktongruppe som nnes i alle verdens hav. De este representantene for denne algegruppen er små (vanligvis 2 20 m), encellede, fotosyntetiserende agellater. Det har ...
Landscape level variation in tick abundance and red deer migration pattern 
Olsen, Nina Risnes (Master thesis / Masteroppgave, 2011)
Over the past decades the population of red deer, Cervus elaphus, along the south-west coast of Norway have increased 10 fold in density as evidenced from the harvest statistics. At the same time the abundance of Ixodes ...
Learning of song in the Pied Flycatcher - A field study 
Skjerven, Johanne Lervik (Master thesis / Masteroppgave, 2011)
A population of pied flycatchers was studied to examine learning of song syllables within a single breeding season. Males were separated into neighbor groups based on geographical location and access to experienced, potential ...
Effects of mother condition on pregnancy and early losses of calves in semi-domesticated reindeer Restricted Access
Lagergren, Madeleine (Master thesis / Masteroppgave, 2011)
A central issue in life history theory is the trade-off between current reproduction and future survival. As mammalian herbivores with long life prioritize survival above reproduction, especially under harsh conditions, ...
The genome sequence of Atlantic cod reveals a unique immune system 
Star, Bastiaan; Nederbragt, Alexander Johan; Jentoft, Sissel; Grimholt, Unni; Malmstrøm, Martin; Gregers, Tone Fredsvik; Rounge, Trine Ballestad; Paulsen, Jonas; Solbakken, Monica Hongrø; Sharma, Animesh; Wetten, Ola Frang; Lanzén, Anders; Winer, Roger; Knight, James; Vogel, Jan-Hinnerk; Aken, Bronwen; Andersen, Øivind; Lagesen, Karin; Tooming-Klunderud, Ave; Edvardsen, Rolf; Kirubakaran, G. Tina; Espelund, Mari; Nepal, Chirag; Previti, A. Christopher; Karlsen, Bård Ove; Moum, Truls; Skage, Morten; Berg, Paul Ragnar; Gjøen, Tor; Kuhl, Heiner; Thorsen, Jim; Malde, Ketil; Reinhardt, Richard; Du, Lei; Johansen, Steinar Daae; Searle, Steve; Lien, Sigbjørn; Nilsen, Frank; Jonassen, Inge; Omholt, Stig W; Stenseth, Nils Christian; Jakobsen, Kjetill Sigurd (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2011)
Atlantic cod (Gadus morhua) is a large, cold-adapted teleost that sustains long-standing commercial fisheries and incipient aquaculture. Here we present the genome sequence of Atlantic cod, showing evidence for complex ...
Multilocus sequence analysis of the house sparrow (Passer domesticus), Spanish sparrow (P. hispaniolensis) and their putative hybrid descendant, the Italian sparrow (P. italiae) Restricted Access
Elgvin, Tore Oldeide (Master thesis / Masteroppgave, 2011)
Homoploid hybrid speciation in animals is poorly understood compared to the classic bifurcating mode of species diversification, mainly because of the scarcity of well-documented cases. Here, I presents the results of a ...
Personality and learning in chicks : Gallus gallus domesticus 
Brandvoll, Christiane (Master thesis / Masteroppgave, 2011)
Det har vært en økende interesse innenfor atferdsøkologien for å studere personlighet hos dyr. Tidligere studier som har undersøkt matsøk og aposematisme hos kyllinger(Gallus gallus domesticus) har vist store individuelle ...
Validation of reference genes for quantitative RT-qPCR studies of gene expression in Atlantic cod (Gadus morhua l.) during temperature stress 
Aursnes, Ingrid A; Rishovd, Anne L; Karlsen, Hans E; Gjøen, Tor (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2011)
Background One important physiological response to environmental stress in animals is change in gene expression. To obtain reliable data from gene expression studies using RT-qPCR it is important to evaluate ...
Assessing diversity of the female urine microbiota by high throughput sequencing of 16S rDNA amplicons 
Siddiqui, Huma; Nederbragt, Alexander J; Lagesen, Karin; Jeansson, Stig L; Jakobsen, Kjetill S (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2011)
Background Urine within the urinary tract is commonly regarded as "sterile" in cultivation terms. Here, we present a comprehensive in-depth study of bacterial 16S rDNA sequences associated with urine from ...
Enhanced transfection of cell lines from Atlantic salmon through nucoleofection and antibiotic selection 
Schiøtz, Berit L; Rosado, Esther G; Baekkevold, Espen S; Lukacs, Morten; Mjaaland, Siri; Sindre, Hilde; Grimholt, Unni; Gjøen, Tor (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2011)
Background Cell lines from Atlantic salmon kidney have made it possible to culture and study infectious salmon anemia virus (ISAV), an aquatic orthomyxovirus affecting farmed Atlantic salmon. However, ...
Evolutionary history of Serpulaceae (Basidiomycota): molecular phylogeny, historical biogeography and evidence for a single transition of nutritional mode 
Skrede, Inger; Engh, Ingeborg B; Binder, Manfred; Carlsen, Tor; Kauserud, Håvard; Bendiksby, Mika (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2011)
Background The fungal genus Serpula (Serpulaceae, Boletales) comprises several saprotrophic (brown rot) taxa, including the aggressive house-infecting dry rot fungus Serpula lacrymans. Recent phylogenetic ...
CLOTU: An online pipeline for processing and clustering of 454 amplicon reads into OTUs followed by taxonomic annotation 
Kumar, Surendra; Carlsen, Tor; Mevik, Bjørn-Helge; Enger, Pål; Blaalid, Rakel; Shalchian-Tabrizi, Kamran; Kauserud, Håvard (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2011)
Background:The implementation of high throughput sequencing for exploring biodiversity poses high demands on bioinformatics applications for automated data processing. Here we introduce CLOTU, an online and open access ...
A metagenomic study of methanotrophic microorganisms in Coal Oil Point seep sediments 
Håvelsrud, Elise O; Haverkamp, Thomas H; Kristensen, Tom; Jakobsen, Kjetill S; Rike, Anne G (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2011)
Background Methane oxidizing prokaryotes in marine sediments are believed to function as a methane filter reducing the oceanic contribution to the global methane emission. In the anoxic parts of the sediments, ...
Transport of Babesia venatorum-infected Ixodes ricinus to Norway by northward migrating passerine birds 
Hasle, Gunnar; Leinaas, Hans P; Røed, Knut H; Øines, Øivind (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2011)
Background Bovine babesiosis is regarded as a limited health problem for Norwegian cows, and the incidence has decreased markedly since the 1930s. Rare cases of babesiosis in splenectomised humans from ...
Microarray estimation of genomic inter-strain variability in the genus Ectocarpus (Phaeophyceae) 
Dittami, Simon M; Proux, Caroline; Rousvoal, Sylvie; Peters, Akira F; Cock, J M; Coppée, Jean-Yves; Boyen, Catherine; Tonon, Thierry (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2011)
Polymorphism, selection and tandem duplication of transferrin genes in Atlantic cod (Gadus morhua) - Conserved synteny between fish monolobal and tetrapod bilobal transferrin loci 
Andersen, Øivind; De Rosa, Maria C; Pirolli, Davide; Tooming-Klunderud, Ave; Petersen, Petra E; André, Carl (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2011)
Background The two homologous iron-binding lobes of transferrins are thought to have evolved by gene duplication of an ancestral monolobal form, but any conserved synteny between bilobal and monolobal ...
Interspecific and interploidal gene flow in Central European Arabidopsis (Brassicaceae) 
Jørgensen, Marte H; Ehrich, Dorothee; Schmickl, Roswitha; Koch, Marcus A; Brysting, Anne K (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2011)
Background Effects of polyploidisation on gene flow between natural populations are little known. Central European diploid and tetraploid populations of Arabidopsis arenosa and A. lyrata are here used to ...
Contemporary divergence in early life history in grayling (Thymallus thymallus) 
Thomassen, Gaute; Barson, Nicola J; Haugen, Thrond O; Vøllestad, L A (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2011)
Background Following colonization of new habitats and subsequent selection, adaptation to environmental conditions might be expected to be rapid. In a mountain lake in Norway, Lesjaskogsvatnet, more than ...
Addressing sperm DNA integrity and fertilization; establishment of a PCR based method for detection of DNA damage (the MDDA assay). 
Ryan, Jon Håvard (Master thesis / Masteroppgave, 2011)
Humans in industrialized societies are continuously exposed to a plethora of environmental chemicals, of which the long-term consequences are largely unknown. Reduced fertility could be one such undesired consequence, and ...
Sink- og arsen-indusert kjemokinfrigjøring og cytotoksisitet i humane bronkiale epitelceller 
Thormodsæter, Anders (Master thesis / Masteroppgave, 2011)
Svevestøv eller partikulært materiale (PM) er assosiert med helseskader og utvikling og forverring av lungesykdommer som kronisk obstruktiv lungesykdom (KOLS), astma og lungekreft. I dette studiet har vi undersøkt eksponering ...
Enniatin B induced inflammatory response and cell death in RAW 264.7 murine macrophages 
Gammelsrud, Anders Ø. (Master thesis / Masteroppgave, 2011)
Dette studiet er gjort for å undersøke cytotoksiske og inflammatoriske effekter av mykotoksinet, enniatin B (EnnB) på makrofager av museopphav (RAW 264.7 celler). EnnB produseres av forskjellige stammer av muggsoppen ...
Cytokine and ROS Production by White Blood Cells after Exposure to Environmental Toxicants, Bacterial Analogs and Mixtures of These 
Schei, Merethe (Master thesis / Masteroppgave, 2011)
The purpose of this study was to investigate immunomodulating effects of environmental toxicants on cytokine and ROS production in white blood cells. Immunomodulating effects can either be investigated on a healthy immune ...
Effekter av in vivo eksponering for vannløselig fraksjon av to råoljer og diesel på juvenil torsk (Gadus morhua). 
Eidsvoll, David (Master thesis / Masteroppgave, 2011)
Målet med oppgaven var å gi en toksikologisk karakteristikk av de oljer som transportertes langs kysten av EU. Som en del av prosjektet ble juvenil oppdrettstorsk (Gadus morhua) eksponert in vivo for vannløselig fraksjon ...
Sheep Grazing Effects on Beetles (Coleoptera) in an Alpine Ecosystem Restricted Access
Rønning, Eva-Charlotte K (Master thesis / Masteroppgave, 2011)
Norwegian alpine areas have for the past nine decades been subjected to an intensified use in terms of grazing by large domestic herbivores. It is thus essential to know how this affects alpine ecosystems. Grazing studies ...
Effect of pre-acclimation to sub lethal dose and combination of cold stress on tolerance of Folsomia candida to thiacloprid 
Tesfamichael, Solomon (Master thesis / Masteroppgave, 2011)
Abstract Living organisms are usually exposed to combinations of a number of physical and chemical environmental factors in their natural habitats. Pre-exposure to sub lethal doses of a chemical may induce enhanced tolerance ...
On the importance of Benzo(a)pyrene induced paternal DNA-damage for the pre-implantation embryo 
Rongved, Tonje Danielsen (Master thesis / Masteroppgave, 2011)
Effects of nitrosubstituted polycyclic aromatic hydrocarbons on DNA, cell signalling and apoptosis in BEAS-2B and Hepa1c1c7 cells. 
Nyvold, Hannah Elise (Master thesis / Masteroppgave, 2011)
We show that nitrated-polycyclic aromatic hydrocarbons (nitro-PAHs) induce cell death in Hepa1c1c7 cells, as measured by fluorescence microscopy. BEAS-2B cells, however did not show any relevant effects. 1.3-DNP induce ...
Effects of environmental toxicants in Atlantic cod (Gadus morhua) from the inner Oslofjord 
Nerland, Inger Lise (Master thesis / Masteroppgave, 2011)
Torsk er en viktig organisme i Norge økonomisk, økologisk og som en matkilde. Atlanterhavstorsk i indre Oslofjord er eksponert for en rekke miljøgifter. Det er derfor viktig å overvåke helsen til torsken. I denne oppgaven ...
Coelomocytter fra vanlig korstroll (Asterias rubens) som modell: bruk i testing av fremmedstoffer. 
Ruud, Henriette (Master thesis / Masteroppgave, 2011)
Utslipp av nye fremmedstoffer til det akvatiske miljø, som ulike legemidler og personlige pleieprodukter, er økende og er funnet i blant annet avløpsvann fra renseanlegg, kystvann, slam og biota. In vitro toksisitetstester ...
Ekspresjon av utvalgte gener i hyse (Melanogrammus aeglefinus) fra områder med ulik miljøbelastning 
Bølling, Nicolai (Master thesis / Masteroppgave, 2011)
Hovedmålet med denne oppgaven var å analysere ekspresjonen av utvalgte gener i hyse (Melanogrammus aeglefinus) fra forskjellig områder i Nordsjøen og Island. Det har vist seg å bli tilført store mengder av stoffer som kan ...
The effects of ethanol on the metabolism of heroin in C57BL/6J mice in vivo and in vitro 
Haugen, Karianne Slåtta (Master thesis / Masteroppgave, 2011)
Drug overdose is a major cause of premature death among heroin users and there has been a call for studies to identify risk factors for fatal overdoses to improve preventive interventions. The majority of heroin related ...
Song learning in oscine songbirds : Tutor choice, timing, and the relationship with sexual imprinting 
Eriksen, Ane (Doctoral thesis / Doktoravhandling, 2011)
Birdsong is a species-specific signal that is used in mate attraction and intrasexual competition. This thesis concerns song acquisition in two oscine songbird species, the great tit Parus major and the pied flycatcher ...
Spatio-temporal population structuring in complex environments: insights from the European grayling (Thymallus thymallus) 
Junge, Claudia (Doctoral thesis / Doktoravhandling, 2011)
Biotransformation of benzo[a]pyrene : analysis, metabolism and adduct formation in rats and Ahr knockout mice 
Sagredo, Carlos (Doctoral thesis / Doktoravhandling, 2011)
Size, age, growth and mortality of the green sea urchin Strongylocentrotus droebachiensis in Vega and Hammerfest, Norway. 
Stadniczeñko, Sandra Gran (Master thesis / Masteroppgave, 2011)
Since the late 1960’s the green sea urchin Strongylocentrotus droebachiensis (O.F. Müller)has grazed down large areas of kelp forest from the county of Trøndelag to the Russian border. This comprises a coastal area of more ...
The response of soft bottom benthic indices, frequently used within European Water Framework Directive, to natural environmental heterogeneity 
Kaurin, Maria (Master thesis / Masteroppgave, 2011)
Conspecific Community Dynamics Models and their applications 
Sadykov, Alexander (Doctoral thesis / Doktoravhandling, 2011)
The thesis introduces a new integrated approach to ecological and evolutionary modeling, the goal of which is to create an analytical platform for applied interdisciplinary researches. This Conspecific Community Dynamics ...
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