Browsing Biologisk institutt ( -2012) by Title
Now showing items 224-243 of 406
-
(Master thesis / Hovedoppgave, 2007)De to makrofyttene Zostera marina (ålegress) og Fucus serratus (sagtang) har glatte overflater og kan synes relativt like som substrat for mobil fauna. Sagtang danner et mer eller mindre kontinuerlig belte langs hele kysten, ...
-
(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 ...
-
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2010)Background Dryas octopetala is a widespread dwarf shrub in alpine and arctic regions that forms ectomycorrhizal (ECM) symbiotic relationships with fungi. In this study we investigated ...
-
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2010)Background The mating type loci that govern the mating process in fungi are thought to be influenced by negative frequency-dependent selection due to rare allele advantage. In this study we used a mating ...
-
(Master thesis / Masteroppgave, 2007)Numerous scientific investigations have been undertaken to answer the question of Polynesian origins. Most archaeological and linguistic evidence and previous studies in population genetics suggested that Remote Oceania ...
-
(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 ...
-
(Master thesis / Masteroppgave, 2007)Summary. This work arose from a collaborative project between the University of Western Cape and the University of Oslo, funded by the Research Council of Norway. The original project was set up to identify informative ...
-
(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 ...
-
(Master thesis / Masteroppgave, 2008)Marine trepigget stingsild (Gasterosteus aculeatus) har kolonisert ulike ferskvannshabitat gjentatte ganger og denne koloniseringen har ført til ulikheter innen trekk som morfologi, atferd, fysiologi og livshistorie. Disse ...
-
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2006)The polymeric Ig receptor (pIgR), also called membrane secretory component (SC), mediates epithelial transcytosis of polymeric immunoglobulins (pIgs). J Chain-containing polymeric IgA (pIgA) and pentameric IgM bind pIgR ...
-
(Master thesis / Hovedoppgave, 2005)The arctic archipelago of Svalbard was almost completely ice-covered during the last glaciation. If any, only very hardy species could have survived the glaciation in situ. Empetrum nigrum is one of the most thermophilous ...
-
(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 ...
-
(Master thesis / Masteroppgave, 2006)Environmental estrogens may modulate the endocrine system through interactions with sex steroid-binding protein (SBP), and these processes may be a novel mechanism for endocrine disruption. The endogenous hormone 17â-estradiol ...
-
(Master thesis / Masteroppgave, 2005)To test if dispersers use odour to discriminate between familiar and unfamiliar individuals male and female root voles (Microtus oeconomus) were given the opportunity to choose between one familiar and one unfamiliar test ...
-
(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 ...
-
(Master thesis / Hovedoppgave, 2004)Recent advances in molecular genetic techniques have made it possible to genotype DNA extracts from non-invasive samples such as hair, faeces, and urine. Subsequent identification of individuals from such material has ...
-
(Master thesis / Masteroppgave, 2008)Epidemiologiske undersøkelser har funnet en sammenheng mellom eksponering for svevestøv i uteluft og utvikling eller forverring av kroniske lungesykdommer, astma, hjertekarsykdommer og kreft. Betennelsesreaksjoner i lungene ...
-
(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 ...
-
(Master thesis / Masteroppgave, 2009)
-
(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 ...