Browsing Department of Biological Sciences by Title
Now showing items 1303-1322 of 2512
-
Investigating hydroxylation of the acetyltransferase NAA10 as a potential regulation mechanism
(Master thesis, 2019-12-14) -
Investigating the Disordered and Membrane-Active Peptide A-Cage-C Using Conformational Ensembles
(Journal article; Peer reviewed, 2021)The driving forces and conformational pathways leading to amphitropic protein-membrane binding and in some cases also to protein misfolding and aggregation is the subject of intensive research. In this study, a chimeric ... -
Investigating the frequency of triploid Atlantic salmon in wild Norwegian and Russian populations
(Peer reviewed; Journal article, 2018-10-03)Background Fish may display variations in ploidy, including three sets of chromosomes, known as triploidy. A recent study revealed a frequency of ~ 2% spontaneous (i.e., non-intentional) triploidy in domesticated Atlantic ... -
Investigating the genetic origin of three Fucus morphotypes using microsatellite analysis
(Master thesis, 2021-06-30) -
Investigating the metabolic, transcriptomic and DNA methylation signatures of high dietary arachidonic acid in zebrafish: Epigenetic and transcriptional effects in the next generation
(Doctoral thesis, 2018-03-14)Background. Nutrition is one of the important environmental determinants of individual health. Alteration in dietary omega-3 and omega-6 polyunsaturated fatty acid (n-3 and n-6 PUFA) profiles is known to affect the health ... -
Investigating the Potential Introduction of Round Goby Neogobius melanostomus in Norwegian Ecosystems by Implementing Species Specific eDNA-sampling
(Master thesis, 2022-09-01)Over the last 150 years, various human activities have altered or weakened ecological barriers. In marine environments the most damaging activity is the ever-increasing, global commercial fleet. By passively transporting ... -
Investigating the Versatility of a Flavin-containing Monooxygenase Engineered Towards Trimethylamine Conversion in Fish Protein Hydrolysate
(Master thesis, 2023-11-20)Byproducts from the seafood industry are rich in nutrients, such as peptides, which might be utilized to a greater extent in the food market. Peptides can be extracted from fish byproducts by enzymatic hydrolysis, but the ... -
An investigation into the parasitic barnacle, Anelasma squalicola; prevalence, infection behaviour and effects on its host, Etmopterus spinax, in Lusterfjord, Norway.
(Master thesis, 2016-06-27)Anelasma squalicola is a recently evolved parasite. Very little is known of its biology due to its normally low prevalence in deep sea lantern sharks (family: Etmopteridae), in which it is found embedded in the skin. A ... -
Investigation of crustaceans from shelf areas in the Gulf of Guinea, with special emphasis on Brachyura
(Master thesis, 2009)Crustacean abundance on continental shelves off Nigeria, Cameroon and Gabon in the Gulf of Guinea was investigated in this study. Quantitative data was sampled with a 0.1 m² Van Veen grab during a survey with RV Dr. Fridtjof ... -
Investigation of growth performance of post-smolt Atlantic salmon (Salmo salar L.) in semi closed containment system: A big-scale benchmark study
(Journal article; Peer reviewed, 2022)The Norwegian salmon industry faces challenges related to sea lice (Lepeophtheirus salmonis) infestations, escapees, diseases and environmental impact. Semi-closed containment systems (S-CCS) have been proposed to abate ... -
Investigation of the putative iron reducing capabilities of Lokiarchaeota
(Master thesis, 2015-06-01)Marine subsurface sediments are large and ecologically significant microbial habitats. The archaeal phylum Lokiarchaeota is a group of organisms commonly found in these sediments. Their metabolism is unknown, but based on ... -
Investigations of the CEL VNTR by cellular experiments and in silico analyses
(Master thesis, 2023-06-02)Carboxyl ester lipase (CEL) is a digestive enzyme which is secreted by acinar cells in the pancreas and released into the intestines. In addition to the globular domain responsible for lipase activity, CEL contains a ... -
Iodine nutrition and toxicity in Atlantic cod (Gadus morhua) larvae
(Peer reviewed; Journal article, 2013-02-19)Copepods as feed promote better growth and development in marine fish larvae than rotifers. However, unlike rotifers, copepods contain several minerals such as iodine (I), at potentially toxic levels. Iodine is an essential ... -
Ion transporters and osmoregulation in the kidney of teleost fishes as a function of salinity
(Journal article; Peer reviewed, 2021-04-20)Euryhaline teleosts exhibit major changes in renal function as they move between freshwater (FW) and seawater (SW) environments, thus tolerating large fluctuations in salinity. In FW, the kidney excretes large volumes of ... -
Is a warmer Arctic a more contaminated Arctic? Atlantification of Kongsfjorden in relation to contaminant levels in seabirds
(Master thesis, 2022-01-31)The Arctic, and Svalbard in particular, is experiencing a more rapid warming compared to the global average. Such Atlantification of the Arctic may change food webs in a way that can also affect the contaminant levels in ... -
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 ... -
Is habituation measurable in lumpfish cyclopterus lumpus when used as cleaner fish in Atlantic salmon Salmo salar aquaculture?
(Peer reviewed; Journal article, 2019)To investigate how lumpfish interact in Atlantic salmon aquaculture, physiological stress responses and changes in behaviour were analysed in experienced and naive lumpfish. Experienced lumpfish (30.2 ± 7.93 g, mean ± SD) ... -
Is individual variation in competitive performance of reared juvenile cod influenced by haemoglobin genotype?
(Peer reviewed; Journal article, 2000)To succeed in scramble competition for food an individual fish will have to have characteristics that allow it to respond rapidly to encountered prey. A trait such as metabolic rate, which has a positive effect on oxygen ... -
“Is it important to consider males while measuring the reproductive potential of a fish stock?”
(Master thesis, 2008)This study explored the paternal contribution to stock reproductive potential in Northeast Arctic (NEA) cod (Gadus morhua L.). An equation for estimating total annual viable sperm production (VSP) was parameterised for NEA ...