Blar i Institutt for biologi på tittel
Viser treff 544-563 av 2522
-
Development of an automated annular arena and thermal preference of zebrafish selected for thermal tolerance
(Master thesis, 2019)Gjennom åtferdsbasert temperaturregulering kan ektoterme dyr regulera kroppstemperaturen ved å velje habitatområder med ulike temperaturar. Dette er livsviktig for akvatiske ektotermer som blir utsett for aukande ... -
Development of biofouling on salmon cage nets and the effects of anti-fouling treatments on the survival of the hydroid (Ectopleura larynx) (Ellis & Solander, 1786)
(Master thesis, 2012)Biofouling has become a serious problem for farmers in the Norwegian finfish aquaculture industry in recent years; with the hydroid Ectopleura larynx dominating the fouling community in southwestern and mid-Norwegian waters. ... -
Development of lipid metabolism in early life stages of Atlantic salmon (Salmo salar)
(Doctoral theses at NTNU;2019:47, Doctoral thesis, 2019)Development of lipid metabolism in early life stages of Atlantic salmon (Salmo salar) Larval and juvenile stages are critical periods for Atlantic salmon (Salmo salar), which can have a major impact on growth and ... -
Development of non-invasive methods using ultrasound technology in monitoring of Atlantic salmon (Salmo salar) production and reproduction
(Doktoravhandlinger ved NTNU;2020:51, Doctoral thesis, 2020)In production of Atlantic salmon (Salmo salar) broodfish, handlings for lice and disease management, gradings and checks for progression of sexual maturation, are inevitable. These handlings cause stress responses and can ... -
The Development of Polydimethysiloxane/ZnO–GO Antifouling Coatings
(Peer reviewed; Journal article, 2021)The development of antifouling coating for sensor is desirable because the biofilm can shorten sensor’s life and cause inaccurate reading. In this study, a facile one-pot reaction was used to synthesized ZnO–graphene oxide ... -
Developmental effects in fish embryos exposed to oil dispersions – the impact of crude oil micro-droplets
(Journal article; Peer reviewed, 2019)During accidental crude oil spills and permitted discharges of produced water into the marine environment, a large fraction of naturally occurring oil components will be contained in micron-sized oil droplets. Toxicity is ... -
Developmental effects related to angiogenesis and osteogenic differentiation in Atlantic salmon (Salmosalar) larvae exposed to dioxin-like polychlorinated biphenyl congener 77 (PCB-77)
(Master thesis, 2010)This study was conducted to investigate the relationship between 3,3’,4,4’-tetra-chlorobiphenyl(PCB-77) induced aryl hydrocarbon receptor (AhR) signalling and down-streamimpacts on detoxification, angiogenesis and ossification ... -
Developmental toxicity of perfluorooctanesulfonate (PFOS) and its chlorinated polyfluoroalkyl ether sulfonate alternative F-53B in the domestic chicken
(Journal article; Peer reviewed, 2018)The chlorinated polyfluoroalkyl ether sulfonate F-53B is used as a mist suppressant in the Chinese electroplating industry. Because of the regulations on perfluorooctanesulfonate (PFOS), its use is expected to increase. ... -
DHA Suppresses Hepatic Lipid Accumulation via Cyclin D1 in Zebrafish
(Peer reviewed; Journal article, 2022)With the widespread use of high-fat diets (HFDs) in aquaculture, fatty livers are frequently observed in many fish species. The aim of this study was to investigate if docosahexaenoic acid (DHA) could be used to reduce the ... -
Diatom biogeography from the Labrador Sea revealed through a trait-based approach
(Journal article; Peer reviewed, 2018)Diatoms are a keystone algal group, with diverse cell morphology and a global distribution. The biogeography of morphological, functional, and life-history traits of marine diatoms were investigated in Arctic and Atlantic ... -
Diel vertical migration of Arctic zooplankton during the polar night
(Journal article; Peer reviewed, 2009)High-latitude environments show extreme seasonal variation in physical and biological variables. The classic paradigm of Arctic marine ecosystems holds that most biological processes slow down or cease during the polar ... -
Diet and metabolic state are the main factors determining concentrations of perfluoroalkyl substances in female polar bears from Svalbard
(Journal article; Peer reviewed, 2017)Perfluoroalkyl substances (PFASs) have been detected in organisms worldwide, including Polar Regions. The polar bear (Ursus maritimus), the top predator of Arctic marine ecosystems, accumulates high concentrations of PFASs, ... -
Dietary and seasonal variability in trophic relations at the base of the North Sea pelagic food web revealed by stable isotope and fatty acid analysis
(Journal article; Peer reviewed, 2018)A two-dimensional biomarker approach including fatty acids and stable isotopes of seston and copepods was applied to examine how the variability at the base of the food web affects trophic interactions between primary ... -
Dietary ARA, DHA, and Carbohydrate Ratios Affect the Immune Status of Gilthead Sea Bream Juveniles upon Bacterial Challenge
(Peer reviewed; Journal article, 2023)This study aims to assess the effects of different dietary n-6/n-3 long-chain polyunsaturated fatty acid ratios and CHO content in the immune response of gilthead seabream. For that purpose, gilthead sea bream juveniles ... -
Dietary composition, overlap and competition between impala and domestic goat as revealed by DNA metabarcoding
(Master thesis, 2017)In a world with a rapidly growing human population and limited resources, it is important to understand how we interact with wildlife to ensure their conservation. In Tanzania, the human population has more than tripled ... -
Dietary effects of different live prey on growth and functional development in ballan wrasse (Labrus bergylta) larvae and juveniles
(Master thesis, 2012)Ballan wrasse (Labrus bergylta) is a new species in aquaculture, the newly initiated intensive production is a response to the increasing demands for wrasse as cleaner fish in salmon and trout farming. The dietary requirements ... -
Dietary fatty acid source has little effect on the development of the immune system in the pyloric caeca of Atlantic salmon fry
(Journal article; Peer reviewed, 2019)The quality and relative amounts of dietary lipids may affect the health and growth of cultured Atlantic salmon. So far, little is known about their effects on the performance of the fish immune system during early life ... -
Dietary Lipid Effects on Gut Microbiota of First Feeding Atlantic Salmon (Salmo salar L.)
(Peer reviewed; Journal article, 2021)Decline in fish oil and fish meal availability has forced the aquaculture sector to investigate alternative and sustainable aquafeed ingredients. Despite that several studies have evaluated the effect of fish oil replacement ... -
Dietary Succinate Impacts the Nutritional Metabolism, Protein Succinylation and Gut Microbiota of Zebrafish
(Journal article; Peer reviewed, 2022) -
Dietary supplementation of commensal Cetobacterium somerae ameliorates the problems associated with fish meal replacement by plant proteins in fish
(Doctoral theses at NTNU;2022:380, Doctoral thesis, 2022)Aquaculture is growing at high speed and the expansion of aquaculture production has been accompanied by the rapid increase in aquafeed production. Fish meal (FM) has been traditionally the first choice of protein source ...