Blar i Department of Biological Sciences på tittel
Viser treff 2285-2304 av 2490
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The Effects of Marine Nutrients on 2,3,7,8-Tetrachlorodibenzo-p-dioxin and PCB-126 Toxicity in HEPA1-6 Cells
(Master thesis, 2023-06-02) -
The effects of photoperiod on smoltification of Atlantic salmon (Salmo salar L.) reared at a high temperature in recirculating aquaculture systems
(Master thesis, 2023-06-02)Juvenile Atlantic salmon (Salmo salar L.) undergo a parr-smolt transformation known as smoltification, which involves a series of physiological, morphological and behavioral changes that prepare them for migrating from ... -
The effects of stream channelization on salmonid habitats in western Norway
(Master thesis, 2023-11-20)Amidst the Anthropocene era’s heightened human influence on the environment and escalating habitat degradation, this study delves into the impacts of channelization on salmon and sea trout habitats in small streams in ... -
The effects of water temperature and photoperiod: Investigating the cause of early activation of the BPG axis in male Atlantic salmon (Salmo salar) during the freshwater stages of development
(Master thesis, 2022-05-25)Early sexual maturation of Atlantic salmon (Salmo salar) post-smolts has been a major issue over the years and has recently become a prevalent issue in land-based production systems like the recirculating aquaculture systems ... -
The impacts of urbanization on pollinator communities in Bergen, Norway
(Master thesis, 2023-11-27)This study was conducted in Bergen, Norway in 2022, whereas I investigated the underlying factors of pollinator abundance and the abundance and richness of Bombus (bumblebees). I explored pollinator communities across ... -
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 influence of re-establishing Eurasian otter (Lutra lutra) on the activity of invasive American mink (Neovison vison) on the southwest coast of Norway
(Master thesis, 2023-06-02)Invasive species are one of the most impactful sources of biodiversity loss worldwide. Generalist predators may be especially damaging, as they can reduce survival and fecundity in native species and can compete with native ... -
The neighborhood matters: warming and novel competitors alter flower production of alpine plants
(Master thesis, 2022-06-01)Sexual reproduction, and the genetic variation it entails, could prove vital for plants’ ability to persist under a changing climate. Climate warming is causing species to shift their ranges to higher elevations and ... -
The Potential of Small Fish to Alleviate Micronutrient Deficiencies. A Case Study of Ghana.
(Master thesis, 2021-08-02)Abstract Micronutrient deficiency also referred to as “hidden hunger” is one of the prevalent forms of malnutrition with about 340 million children deficient in essential vitamins and minerals globally (FAO, 2020). Fish ... -
The return of the Atlantic bluefin tuna to Norwegian waters
(Master thesis, 2019-06-15) -
The role of bioluminescent prey in the diet of two hatchetfish species and four lanternfish species in the North Atlantic Ocean in relation to eye-size
(Master thesis, 2023-06-16)The mesopelagic zone, often referred to as “the twilight zone” can be defined as the area of the ocean at 200-1000 m depth. Here, light levels vary greatly and provides a varying visual scene. At shallow depths, down-welling ... -
The role of crawling predators in the decline and distribution of blue mussels in Norwegian coastal waters
(Master thesis, 2022-08-22)Blue mussels (Mytilus spp.) are declining in coastal areas around the world. In Norway, they thrive on floating structures, while on rocky shores they have widely disappeared. Proposed and elsewhere reliable drivers such ... -
The role of marine nutrients in 2,3,7,8-tetrachlorodibenzo-p-dioxin toxicity in vitro and in vivo
(Master thesis, 2022-06-01)2,3,7,8-Tetrachlorodibenzo-p-dioxin (TCDD) is the most potent dioxin congener and is associated with several adverse health effects. As a result of its high lipophilicity and slow degradation the compound easily accumulates ... -
The role of spatial dependency in niche shifts of invasive species
(Master thesis, 2023-09-01)Invasive species are an ongoing threat to nature and human interests. Species distribution models are used to predict the current and potential distribution of invasive species, but doing so has proved difficult. One ... -
The sea louse Caligus elongatus (Caligidae). Genetic variation and host use by its two genotypes
(Master thesis, 2021-06-15)Caligus elongatus (Caligidae: Siphonostomatoida) is a common ectoparasite of fish in the north Atlantic. Unlike the salmon louse (Lepeophtheirus salmonis) which is specific to salmonids, C. elongatus infects more than 80 ... -
The sea louse Caligus elongatus (Caligidae). Hosts susceptibility to the two genotypes
(Master thesis, 2023-06-02) -
The small-scale fisheries of Timor-Leste and the impacts of the COVID-19 pandemic
(Master thesis, 2021-08-02)Small-scale fisheries (SSFs) of developing countries are an important yet neglected part of the world’s capture fisheries. The general lack of fisheries dependent and independent data makes it difficult to predict the ... -
Theoretical and experimental studies of Atlantic cod (Gadus morhua L.) egg buoyancy within a metapopulation framework
(Doctoral thesis, 2012-11-02)Marine fishes are subdivided into genetically separated units at various geographical scales. The mechanisms contributing to distinct populations may include year-round site fidelity or natal homing of juvenile and adult ...