Master theses: Recent submissions
Now showing items 241-260 of 266
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Genetisk analyse av Vibrio anguillarum, Vibrio ordalii og Vibrio ordalii-lignende isolater isolert fra syk rognkjeks
(Master thesis, 2019-06-22)Vibrio anguillarum og en Vibrio ordalii-lignende bakterie har de siste årene vært et økende problem hos en rekke nyere marine arter det drives oppdrett av i Norge, spesielt rognkjeks. Lite studier er gjort av populasjonsgenetikken ... -
Male mate choice and selectivity in relation to female body size, in the seed beetle Callosobruchus maculatus
(Master thesis, 2019-06-21)Selectivity in mate choice and mating behaviour is a central element of sexual selection, and an important component of evolution in a number of species across the animal kingdom. Mate choice relates to how individuals ... -
Can catch data from small meshed gears in shallow waters be used to estimate recruitment indices of Norwegian coastal cod, Northeast Arctic saithe and pollack along the Norwegian coast?
(Master thesis, 2019-06-21)Shallow waters (<30 meters) are important nursery areas for coastal cod, saithe and pollack, before they recruit to their respective fisheries at an age around 3 years old. Still, no study provides information on fish ... -
Karakterisering av proteiner fra Prymnesium kappa virus (PkV RF01) - et potensial for bioprospektering
(Master thesis, 2019-06-21)Prymnesium kappa virus (PkV RF01) ble først isolert i Raunefjorden i tidsrommet 2009-2011 og er det største algeviruset så langt isolert (kapsid størrelse 310 nm). Viruset kan lysere flere stammer av Haptolina ericina og ... -
Estimation of discard of cod (Gadus morhua) in Norwegian gillnet fisheries
(Master thesis, 2019-06-21)Estimates have suggested that around 10 % of global marine fisheries-catches are discarded at sea, instead of landed and utilized. Since 1987, Norway has gradually implemented a Discard ban, which prohibits the act, but ... -
"A cleaner break" - Genetic analysis identifies two major groups of ballan wrasse (Labrus bergylta) within Scandinavia and evidence of phenotype derived divergence
(Master thesis, 2019-06-21)For a long time, sea lice have represented the major financial and fish welfare challenge of the salmonid farming industry. In the late 1980s, the use of parasite-eating cleaner fish, first and foremost wrasses (family ... -
Reproduktiv investering hos flekket frøbille, Callosobruchus maculatus. -Effekten av ulik interaksjonsfrekvens på hunner og hanners vektutvikling og livslengde.
(Master thesis, 2019-06-21)For insekter er kostnader assosiert med seksuell reproduksjon i stor grad knyttet til gametproduksjon, kurtise og egglegging. Investeringsmønster er ofte forskjellig mellom hunner og hanner, og seksuell konflikt over ... -
Læring hos biologistudenter: En kvantitativ pilotstudie av læringsmønstre blant førsteårsstudenter i biologi
(Master thesis, 2019-06-21)For studenter er det viktig å ha gode strategier for å lære, ikke bare i studiehverdagen men også for senere deltakelse i arbeidslivet. Innsikt i studenters bruk av læringsstrategier kan danne et grunnlag for utvikling av ... -
Characterizing the Infectious Pattern of Viruses Infecting the Haptophyte Emiliania huxleyi
(Master thesis, 2019-06-21)Marine viruses play an important role in biodiversity, population abundance and biogeochemical cycling of elements in the environment. They exhibit a broad range of infectious patterns and it is of ecological interest to ... -
Metabolic properties of the hyperthermophilic sulfate reducing archaea of the genus Archaeoglobus in deep-sea hydrothermal vent systems
(Master thesis, 2019-06-21)Along the mid-ocean ridge system, super-heated fluids rich in metal sulfides expel out of the ocean floor, precipitating sulfides and forming black smoker chimneys. The precipitated sulfide forms the chimney wall and the ... -
Is eggshell colouration related to the sex of the embryo in the northern lapwing Vanellus vanellus?
(Master thesis, 2019-06-21)This study focuses on eggshell pigmentation in the northern lapwing Vanellus vanellus, a shorebird in the plover family. The pigmentation of dark spots is attributed to the organic compound protoporphyrin, which is associated ... -
Co-infection of Atlantic salmon (Salmo salar) by Lepeophtheirus salmonis and Moritella viscosa
(Master thesis, 2019-06-20)A co-infection is defined as an infection with two or more different pathogens, where the pathogens can either have a synergistic or antagonistic effect or alternatively not affect each other at all. Lepeophtheirus salmonis ... -
Community composition, population structure and phylogeny of coastal sympagic meiofauna in eastern Svalbard
(Master thesis, 2019-06-19)Coastal sea ice communities constitute a highly vulnerable yet little investigated part of the Arctic ecosystem. A better understanding of the Arctic sea ice ecosystem will aid in more accurate predictions of the ecological ... -
The Infection Cycle of Marteilia pararefringens sp. nov. in the blue mussel, Mytilus edulis L.
(Master thesis, 2019-06-18)In 2016 the first case of marteiliosis in Norway was reported by the Institute of Marine Research. The discovery occurred in Agapollen, Bømlo, a previously active oyster pond. The parasite Marteilia pararefringens sp. nov. ... -
The return of the Atlantic bluefin tuna to Norwegian waters
(Master thesis, 2019-06-15) -
Seasonal zooplankton dynamics in Svalbard coastal waters: The shifting dominance of mero- and holoplankton and timing of reproduction in three species of Copepoda
(Master thesis, 2019-06-15)Monthly sampling was conducted in the ice-free Adventfjorden in West Spitsbergen, Svalbard, from March to November 2018 to assess the seasonal development in the Arctic zooplankton community and to investigate the seasonally ...