Browsing Evolusjon og biodiversitet by Issue Date
Now showing items 1-20 of 38
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(Master thesis / Masteroppgave, 2005)In this study I examined intra-specific variation in primary sex traits in male bluethroats (Luscinia svecica svecica), a passerine species with a high intensity of sperm competition, The single most important predictor ...
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(Master thesis / Masteroppgave, 2006)Fluctuating asymmetry (FA) as a measure of environmental stress was studied in polar bear (Ursus maritimus) skulls from East Greenland (n = 300, collected during the period 1892-2004) and Svalbard (n = 391, collected during ...
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(Master thesis / Masteroppgave, 2006)Introduced plant species may lead to negative consequences for the local community by outcompeting other species, and in extreme situations decrease biodiversity. It is well known that once an invasive species becomes ...
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(Master thesis / Masteroppgave, 2007)Abstract The Atlas flycatcher (Ficedula speculigera) is a poorly studied species in an otherwise thoroughly studied species complex. In this study I attempt to reconstruct the evolutionary history of this species, I look ...
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(Master thesis / Masteroppgave, 2007)A Moroccan polycotylid plesiosaur from the early Turonian (Upper Cretaceous) of the Goulmima Formation is described. The specimen, bought from an American fossil dealer in 2002 by the Museum of Natural History, Oslo, is a ...
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(Master thesis / Masteroppgave, 2007)Four arctic, obligate parthenogenetic populations assumed to be polyploid and one temperate, cyclic parthenogenetic, diploid population were used to compare life history traits, growth rates and content of nucleic acids ...
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(Master thesis / Masteroppgave, 2007)Ornithomimosaurs are only one out of several dinosaurian groups that at some point evolved beaks. The morphology of this beak and its relation to dietary habits have long been debated.Birds and turtles are the primary ...
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(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 ...
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(Master thesis / Masteroppgave, 2007)Abstract Up until now, there have not been many studies of single Gyrodactylus manipulations on salmonids performed in order to study the establishment, development and reproduction of the parasites. The results of the ...
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(Master thesis / Masteroppgave, 2007)Over the past 2 decades major advancements in phylogenetics have been made and this in turn has influenced our understanding of eukaryotic evolution. The use of morphological data combined with sequence data has been the ...
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(Master thesis / Masteroppgave, 2007)Climatic fluctuations characterized the climate in East Africa during the Plio-Pleistocene. These variable conditions established opportunities for ecological fragmentation with subsequent genetic isolation of species ...
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Studies of generic and specific delimitation of the genera Drimiopsis and Ledebouria (Hyacinthaceae) (Master thesis / Masteroppgave, 2007)The monocot genera Ledebouria and Drimiopsis belong to the family Hyacinthaceae in the order Asparagales. The aim of this study was to investigate the generic delimitation between the two genera using DNA sequencing, and ...
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(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 ...
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(Master thesis / Masteroppgave, 2008)Dryas octopetala L. is an arctic-alpine plant that belongs to a genus where the number and delimitation of species are not fully resolved. The plant is unusual, compared with most other arctic-alpine plants in its diploid, ...
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(Master thesis / Masteroppgave, 2008)The control region (CR) of the mitochondrial DNA has been previously used to decipher the population structure of Holocene bowhead whales (Balaena mysticetus) from the Spitsbergen stock. The bone samples dated from recent ...
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(Master thesis / Masteroppgave, 2008)Adaptation to different foraging resources is believed to be an important driving force of divergence between populations. Following colonization of freshwater, threespined sticklebacks (Gasterosteus aculeatus) have occupied ...
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(Master thesis / Masteroppgave, 2008)The Semi-collared flycatcher (Ficedula semitorquata) is a member of the black-and-white flycatcher species complex. It is poorly studied, rare, and is currently classified as “near threatened”, in the IUCN red lists of ...
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(Master thesis / Masteroppgave, 2008)Oviraptorids are one of several groups of dinosaurs which have evolved beaks. Of extant beaked animals, birds and turtles are the best known. In this study, an anatomical comparison between oviraptorids, extant birds and ...
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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, 2009)Following colonization of new habitats and subsequent strong selection, adaptation to environmental conditions might be expected to be rapid. In a mountainous lake in Norway, Lesjaskogsvatnet, more than 20 distinct spawning ...