Browsing Biologisk institutt ( -2012) by Title
Now showing items 283-302 of 406
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(Master thesis / Masteroppgave, 2010)Trichaptum fuscoviolaceum is a saprotrophic basidiomycete morphospecies growing on conifers. In the present study, the genetic structure in a circumboreal sample of T. fuscoviolaceum was analyzed using a multilocus sequencing ...
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(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 ...
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(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 ...
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(Master thesis / Hovedoppgave, 2007)ABSTRACT This study focuses on the mycogeography of 83 selected macrofungi in Norway. The fungi’s distribution patterns were related to a dataset of 81 environmental variables through GLM in order to reveal which factors ...
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(Master thesis / Masteroppgave, 2008)Flakavatn is probably Norway s largest high-alpine lake, situated in the remote Finse region, south central Norway. The unique character of the lake is a result of the long lasting annual freezing period, which affects ...
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(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 ...
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(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 ...
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(Master thesis / Masteroppgave, 2007)Iodinated x-ray contrast media (ICM) are used to improve the visibility of internal structures of the body in an x-ray image due to their ability to attenuate x-rays, providing enhanced contrast between regions of interest ...
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(Master thesis / Masteroppgave, 2009)Variation in behavioral traits may be genetically or environmentally determined, or both. Previous studies on nest building behaviour in captive birds have proposed that nest building is mainly genetically determined. ...
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(Master thesis / Masteroppgave, 2010)Polychlorinated biphenyls (PCBs) are persistant organic pollutants that bioaccumulate and biomagnify through the food chain. Exposure to ortho-chlorinated PCBs has been associated with effects on the nervous and immune ...
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(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 ...
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(Master thesis / Masteroppgave, 2006)Snow leopards (Uncia uncia) inhabit the remote mountain ranges of the Himalayas, and are currently listed as Endangered. Due to their inaccessible habitat and sparse distribution it is difficult to compile exact estimates ...
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(Master thesis / Hovedoppgave, 2004)Abstract Anti-predation behaviour in many rodents has mainly been studied under laboratory conditions, and less in naturally conditions in the field. Here we studied the results of an experiment specifically designed for ...
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(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 ...
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(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, ...
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(Master thesis / Hovedoppgave, 2005)SAMMENDRAG Celler er kontinuerlig utsatt for påvirkninger som kan skade dets DNA. Dette inkluderer oksidative DNA-skader, som oppstår via normal oksidativ metabolisme, og fra forbindelser i miljøet. Slike DNA-skader kan ...
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(Master thesis / Hovedoppgave, 2007)Freshwater sculpins and salmonids coexist in many streams throughout the Northern hemisphere, and often constitute an important component of stream ecosystems. Alpine bullhead Cottus poecilopus Heckel have been known to ...
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(Master thesis / Masteroppgave, 2011)
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(Master thesis / Masteroppgave, 2009)Hybrid speciation has until recently been largely neglected by zoologists. This attitude is now changing. However, data is still scarce, and published examples include few taxa. In this thesis I present the first genetic ...
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(Master thesis / Masteroppgave, 2008)Sedimentet i mange norske fjorder er betydelig forurenset, hovedsaklig som følge av menneskelig aktivitet. På bakgrunn av høye verdier av miljøgifter, er det fastsatt kostholdsråd på konsum av lever fra torsk i indre ...