Blar i NTNU Open på emneord "Marine Coastal Development, Aquaculture"
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Assimilation of salmon feed and salmon feces by the great scallop (Pecten maximus)
(Master thesis, 2014)The primary objective of this Master s thesis was to study if organic waste particles released from cage fish farms could be assimilated by the great scallop (P. maximus) through a laboratory trial and a field trial. In ... -
Changes in hormone profiles in relation to ultrasound-determined testis maturation during a reproductive cycle in Atlantic salmon (Salmo salar)
(Master thesis, 2016)At present, fully mature males are identified by checking for running milt by palpitation during gamete production of Atlantic salmon (Salmo salar). Ultrasound (US) technology could provide a cheap and fast method to monitor ... -
Characterization of mitochondrial respiration in Atlantic salmon (Salmo salar) fed with glutamate and succinate enhanced diet
(Master thesis, 2018)The smolt stage of salmon has challenges in reaching adequate growth rates due to the changing environmental conditions at sea. Therefore, it is necessary to provide adequate diets to achieve sufficient growth. The present ... -
Characterization of Nitrogen Dynamics in Different Recirculation Systems
(Master thesis, 2016)The need to reduce freshwater consumption in global food production has long been recognized. Food production in single- and multi-species recirculation systems offers advantages in terms of reduced water and energy ... -
Characterization of planktonic sea lice distribution and association to fish farm installations
(Master thesis, 2017)Lepeoptheirus salmonis (Krøyer 1837) and Caligus elongatus (Normann 1832) are the sea lice species posing the biggest threat to both farmed and wild salmonid stock in the Northern hemisphere today. The three first stages ... -
Characterization of the initial ammonium uptake in Saccharina latissima - Possible implications for cultivation in an IMTA system with intensive salmon farming
(Master thesis, 2018)Production of Atlantic salmon (Salmo salar) results in a release of ca. 39% of the total nitrogen content from the feed, which is mainly released as dissolved inorganic nitrogen (DIN), and mainly as the metabolic by product ... -
Cultivation of Acartia tonsa with 3 different marine microalgae to optimize productivity and nutritional value
(Master thesis, 2018)The conventional method for first feeding of marine fish is to use enriched rotifers (Brachionus spp.) in the beginning and followed with enriched Artemia, before transfer to dry feed. Recent researches have shown that ... -
Effects of different live feed on ballan wrasse (Labrus bergylta) larval hepatocyte and enterocyte development
(Master thesis, 2015)Abstract Salmon lice infestations are one of the biggest challenges for Norwegian salmon farming today. Delousing agents have been the solution to these infestations in the past, but overuse and wrong dosages have caused ... -
Effects on growth, survival and bone development from start feeding lumpsucker (Cyclopterus lumpus) larvae with Artemia, copepods and fomulated feed
(Master thesis, 2018)Salmon lice (Lepeoptherius solmonis) is a major health problem in salmon (Salmo salar) production. Reduced lice sensitivity towards several of the chemical treatments have increased the interest in cleaner fish used to ... -
Effects on the survival and development of Acartia tonsa fed different Rhodomonas species cultivated on different nitrogen concentrations
(Master thesis, 2018)Marine larvae need a live feed with a high amount of PUFA especially EPA and DHA to have a healthy development. Copepods are the preferred choice of live feed since they are there natural food source and have the right ... -
Influence of food availability and nutritional state of macroalgae on development of fouling bryozoans on cultivated Saccharina latissima
(Master thesis, 2018)Fouling of bryozoans is a major challenge in the Norwegian macroalgae industry. Bryozoans are one of the prominent epiphytes colonizing macroalgae, causing mechanical damage, competing for nutrient, shading and decreasing ... -
Lower trophic level mixed fishery (LOTROMIX) - Implications for ecosystem and management
(Master thesis, 2017)There is an increasing interest in new marine resources for the production of aquaculture feed, to meet the increasing growth of the aquaculture industry. Marine species from lower trophic levels are a potential resource ... -
Marint RAS-anlegg - For produksjon av laks med gjenbruk av ressursar
(Master thesis, 2017)Dei siste åra har produksjonskostnaden i norsk oppdrettsnæring for laks auka som eit resultat av miljøutfordringane næringa står overfor. Mangel på areal, lakselus, sjukdom, rømming og utslepp har tvinga myndigheitene til ... -
Morfologiske relasjonar til dyrka Saccharina latissima ved tre stasjonar langs Norskekysten
(Master thesis, 2018)Makroalgar har i tusenvis av år blitt brukt til mat og andre føremål over heile verda, og land som Kina, Korea og Japan har ein lang tradisjon for kultivering av tare. I Europa derimot er taren hovudsakleg hausta frå ville ... -
Morphological development of wild leptocephalus larvae of the European eel (Anguilla anguilla) - With special emphasis on muscle and digestive system
(Master thesis, 2015)The larval stage of the European eel (Anguilla anguilla) is largely undescribed. Increased knowledge about the ontogeny of the eel is be of interest both in an ecological perspective, but also in relation to a conservation, ... -
Ontogeny of the digestive system in lumpfish (Cyclopterus lumpus L.) larvae in relation to growth and start feeding diet - A histological and stereological approach
(Master thesis, 2018)Global aquaculture production of Atlantic salmon (Salmo salar) has stabilized since 2012 due to high prevalence of the ectoparasitic sea lice (Lepeophtheirus salmonis). Deployment of lice-eating cleaner fish is considered ... -
Seasonal and inter-male variation in spermatogenesis in farmed Atlantic salmon (Salmo salar) during the last year of sexual maturation
(Master thesis, 2016)Reproductive patterns in male teleost fish have received relatively little attention compared to those of their female counterparts. Testis maturation and progression in spermatogenesis are usually described with a combination ... -
The effect of different live feeds and water qualities on growth, survival, ossification and skeletal anomalies of ballan wrasse (Labrus bergylta) larvae
(Master thesis, 2015)Salmon lice (Lepeophtheirus salmonis) infections is one of the major problems in Atlantic salmon (Salmo salar) aquaculture. This has led to an increasing interest in the cultivation of ballan wrasse (Labrus bergylta), for ... -
The Effects of Membrane Filtration in a Recirculating Aquaculture System on Water Quality and Fish Performance of Atlantic Salmon (Salmo salar)
(Master thesis, 2018)Recirculating aquaculture systems (RAS) could be a solution to several of the challenges associated with environmentally sustainable growth of the aquaculture industry. However, high investment and operating costs are ... -
The effects of variable environmental conditions on growth, nutritional state and protein content in cultivated Saccharina latissima in Norway
(Master thesis, 2018)Cultivation of macroalgae, or seaweed, has been a major industry in Asian countries, predominantly China and Indonesia, for decades. Production of seaweed in Norway is mostly related to research and development (R&D), yet ...