Browsing NTNU Open by Author "Nilssen, Kjell J."
Now showing items 1-14 of 14
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Anaesthetic efficacy of Aqui-S, Benzoak, and MS-222 on lumpfish (Cyclopterus lumpus) fries. Impact from temperature, salinity, and fasting
Jacobsen, Julianne Valla; Steen, Klemet; Nilssen, Kjell J. (Journal article; Peer reviewed, 2019)Large numbers of lumpfish are produced for the Norwegian salmon industry and are used to combat sea lice infestations. Periodically high mortality of farmed lumpfish demonstrates the need to improve farming conditions and ... -
Demographic and genetic description of Greenland´s only indigenous Atlantic salmon (Salmo salar) population
Arnekleiv, Jo Vegar; Davidsen, Jan Grimsrud; Sheehan, T. F.; Lehnert, s.j.; Bradbury, I.R.; Rønning, Lars; Sjursen, Aslak Darre; Kjærstad, Gaute; Nilssen, Kjell J. (Journal article; Peer reviewed, 2018)In Greenland, Atlantic salmon are known to reproduce in only one river, the Kapisillit River. Little is known about the population characteristics or the relationship to other salmon populations across the species range, ... -
Effects of melatonin and cortisol on vitellogenin and estrogen receptor α mRNA expression in 17β-estradiol stimulated Atlantic salmon (Salmo salar) hepatocytes
Skauen, Guri Eriksrød (Master thesis, 2013)Knowledge regarding the influence of external and internal factors on teleost fecundity may contribute to increased production and efficiency in aquaculture.Teleost plasma cortisol levels may be elevated in response to ... -
Farming of juvenile Lumpfish (Cyclopterus lumpus). Growth pattern, anesthetic protocol, and salinity tolerance.
Jacobsen, Julianne Adele V (Master thesis, 2016)Sea lice (Lepeophtheirus salmonis) infestation is currently one of the biggest challenges within the Norwegian Atlantic salmon (Salmo salar) industry, causing major expenses and limiting further production growth. Traditional ... -
Oksygenforbruk, stressrespons og stress under Aqui-S sedasjon hos bergnebb (Ctenolabrus rupestris) i transportrelaterte forsøk
Freland, John-Are (Master thesis, 2011)Dagens problem med lakselus på atlantisk laks (Salmo salar) er betydelig, og bakgrunn for store økonomiske tap. Fiskeridirektoratet anslår at 80 % av tap i matproduksjon av atlantisk laks er forårsaket av lakselus. ... -
Oxygen consumption of snow-trout (Schizothorax plagiostomus) and Red Zebra (Metriaclima estherae) during simulated transport in a closed system
Kvigstad, Fredrik Friis (Master thesis, 2013). -
Plasma melatonin profiles in Common carp (Cyprinus carpio) exposed to indoor photoperiods
Holtan, Marte Berg (Master thesis, 2011)An intervention against extreme poverty and hunger was introduced in year 2000, when all members of the United Nations agreed on the Millennium Development Goals (MDG). Today, 1.4 billion people live in poverty and hunger, ... -
Plasma melatonin profiles in copper mahseer (Neolissochilus hexagonolepis) kept under natural and manipulated photoperiods
Guttu, Ane Maria (Master thesis, 2011)Abstract In many countries around the world, health problems related to food access are an increasing threat, and many people today still don?t have access to sufficient protein and energy in their diet. In poor countries ... -
Plasma melatonin profiles in copper mahseer (Neolissochilus hexagonolepis) kept under natural and manipulated photoperiods
Guttu, Ane Maria (Master thesis, 2011)Abstract In many countries around the world, health problems related to food access are an increasing threat, and many people today still don t have access to sufficient protein and energy in their diet. In poor countries ... -
Plasma melatonin profiles in mrigal carp (Cirrhinus mrigala) kept under natural and manipulated photoperiods
Næve, Ingun (Master thesis, 2012)One major challenge in Asian aquaculture is the limited availability of carp fries. In order to establish out of season supply of fries, knowledge about the pineal melatonin clock and calendar function, and its influence ... -
Plasma melatonin profiles in silver carp (Hypophthalmichthys molitrix) during natural and manipulated photoperiods
Prestrud, Marit (Master thesis, 2012)Photoperiodic manipulation of reproductive events in fish is suggested to secure all-year supply of fish fry in the Nepalese aquaculture. This could significantly improve food security and decrease poverty in Nepal. In ... -
Stress gives less?: Cortisol effects on E2 induced vitellogenin expression in salmon hepatocytes
Tran, Linda Huong Thi (Master thesis, 2010)The Atlantic salmon (Salmo salar) is an important species in the fish farming industry in several countries. As high production volume is wanted, a corresponding survival rate of the fry is required. To ensure the development ... -
The Efficacy and Stress-Reducing Capacity of MS-222, Benzoak and Aqui-S for the Ornamental Cichlid Fish, Metriaclima estherae
Ims, Stine (Master thesis, 2011)The financial crises and global change have caused setbacks to the improvements in many undeveloped countries. To be able to achieve the Millennium developmental goals within 2015, it will require a higher effort. ... -
The Physiological Stress Response of Bighead Carp Hypophthalmichthys Nobilis, and the Efficacy of Three Chemical Anaesthetics in Bighead Carp Fingerlings
Juell, Rosemary Alice (Master thesis, 2013)By increasing the knowledge of physiological responses in different fish species and improving handling protocols by making them more species specific, one can potentially increase production in aquaculture. Bighead carp ...