Now showing items 1-20 of 194

    • Acute and long-term effects from petroleum discharges on temperate and Arctic Calanus species 

      Jensen, Louise Kiel (Doctoral thesis; Doktorgradsavhandling, 2011-11-11)
      Summary Petroleum exploitation is emerging in the Arctic. In the Norwegian Arctic the southern Barents Sea is opened for development of oil and gas fields. This same area holds some of the world's largest and well managed commercial fish stocks such as Herring (Clupea harengus), Capelin (Mallotus villosus), Haddock (Melanogrammus aeglefinus), Atlantic Cod (Gadus morhua). For the interest of the ...
    • Adjuvant combinations with the Toll-like receptor ligand CpG - Protective immune responses in Atlantic salmon 

      Thim, Hanna Leena (Doctoral thesis; Doktorgradsavhandling, 2016-12-01)
      Aquaculture is in need of improved viral vaccines to meet the demands of a growing sustainable industry. Fish viral vaccines are often based on less immunogenic antigen (Ag) formulations that require adjuvants to elicit sufficient protection. Toll-like receptor (TLR) agonists holds high immunostimulatory properties and are in mammals well explored vaccine adjuvants. The potential of synthetic ...
    • Analysis of processes at the haustorial interfaces between Cuscuta reflexa and its hosts 

      Johnsen, Hanne Risan (Doctoral thesis; Doktorgradsavhandling, 2014-08-27)
      The genus Cuscuta comprises a group of holoparasitic dicotyledonous angiosperms that cause damage to many economically important crops. Parasitic plants form physical and physiological connections (haustoria) with the parenchyma and vascular vessels of compatible host plants. These connections provide them with water, mineral nutrients and organic compounds. Over time, this life style has led to ...
    • Anglerfish Lophius piscatorius L. in Faroese waters. Life history, ecological importance and stock status 

      Ofstad, Lise Helen (Doctoral thesis; Doktorgradsavhandling, 2013-04-16)
      Anglerfish Lophius piscatorius has during the last two decades become a highly exploited resource and is now one of the five most economically important demersal fish species in the Faroese fishery. Despite this, there is at present little information available on the population status of anglerfish in Faroese waters. The main aim of this study is to increase the biological knowledge of anglerfish ...
    • Animal-habitat relationships in high altitude rangelands 

      Singh, Navinder J. (Doctoral thesis; Doktorgradsavhandling, 2008-09-18)
      This study conducted in the high altitude rangelands of Indian Transhimalaya, deals with basic questions regarding the ecology of an endangered species, the wildsheep Tibetan argali (Ovis ammon hodgsoni) and applied issues related to its conservation and potential conflict with the local nomadic pastoralists. The basic questions on ecology are aimed at delineating the habitat and resource selection ...
    • Antecedents and consequences of word of mouth - Consumer evaluation context, individualism, personality and defense of companies 

      Wien, Anders Hauge (Doctoral thesis; Doktorgradsavhandling, 2015-06-03)
      People often share word of mouth (WOM) with their friends, family, and colleagues, and they increasingly also share WOM with strangers through various Internet channels. Since WOM has been found to have an important impact on consumer behavior, businesses worldwide are eager to understand the intricacies of the phenomenon. In particular, businesses are interested in understanding how positive WOM ...
    • Antecedents and outcomes of exporter – importer relationship quality - An exporting developing country’s context 

      Ahamed, A. F. M. Jalal (Doctoral thesis; Doktorgradsavhandling, 2015-11-13)
    • Anti-inflammatory, antioxidative and anti-atherogenic bioactivity in marine sources ascribed to nonlipid constituents 

      Walquist, Mari Johannessen (Doctoral thesis; Doktorgradsavhandling, 2018-08-31)
      Cardiovascular disease (CVD) has been, and continues to be, one of the main causes of global deaths. For decades, fish consumption has been acknowledged to reduce the risk of CVD, especially omega-3 fatty acids are known to have anti-inflammatory properties. Still, there are indications that beneficial effects are not limited to fatty acids alone. In this study, the bioactivity in marine sources ...
    • Antibacterial and anti-biofilm activity of novel marine natural product mimics 

      Mishchenko, Ekaterina (Doctoral thesis; Doktorgradsavhandling, 2017-01-20)
      Infectious diseases represent an urgent public health problem globally. Particularly healthcare-associated infections are often complicated by antibiotic resistance and presence of recalcitrant microbial biofilms. On the hunt for effective antibiotics with novel mechanisms of action (MOA), researchers look into largely unexplored natural environments with high biodiversity like the oceans, rich in ...
    • Antimicrobial natural products from Arctic and sub-Arcticmarine invertebrates 

      Tadesse, Margey (Doctoral thesis; Doktorgradsavhandling, 2010-09-17)
      Infectious diseases are a leading cause of death world-wide and there is a growing need for new anti-infective agents to combat multi-resistant strains of bacteria and fungi. Marine natural products are promising sources of novel antimicrobial compounds. In the present thesis, an investigation into the antimicrobial metabolites of Arctic and sub-Arctic marine invertebrate species is presented. ...
    • Antimicrobial peptides in Urticina eques and Echinus esculentus. Isolation, characterisation, and structure-activity relationship studies 

      Solstad, Runar Gjerp (Doctoral thesis; Doktorgradsavhandling, 2016-12-09)
      Bacterial resistance to antibiotics has become a serious global problem. Infections that once were easily cured with antibiotics have now become nearly impossible to treat. Thus, there is a desperate need for new antibacterial drugs. Antimicrobial peptides (AMPs) are a diverse group of compounds. Amongst their unique features are their ability to kill bacteria (often both Gram-positive and Gram-negative) ...
    • Arctic charr (Salvelinus alpinus (L.)), an adequate host to Gyrodactylus salaris (Monogenea) 

      Winger, Anja Celine (Doctoral thesis; Doktorgradsavhandling, 2009-05-26)
      Arctic charr is a suitable host to Gyrodactylus salaris, and G. salaris is a non-pathogen to this host species. This parasite is highly pathogenic to Norwegian Atlantic salmon and it has driven most affected salmon populations to extinction. In Troms County in northern Norway, two rivers are infected. These two rivers, Skibotnelva and Signaldalselva, are the northernmost G. salaris infected rivers ...
    • At-sea behaviour of the world's northernmost harbour seal (Phoca vitulina) population in a changing Arctic 

      Blanchet, Marie-Anne Ermeline (Doctoral thesis; Doktorgradsavhandling, 2016-04-15)
      The earth is experiencing warming at a rate that challenges the adaptive capacities of many animal species. Because marine mammals can integrate and reflect ecological variation across various spatial and temporal scales, they are prime sentinels of marine ecosystem change. This thesis explores movement patterns and foraging behaviour, and the ontogeny of these behaviours, in harbour seals (Phoca ...
    • Atlantic salmon B cells- local and systemic responses to intraperitoneally administered salmonid alphavirus 

      Jenberie, Shiferaw (Doctoral thesis; Doktorgradsavhandling, 2020-03-04)
      Viral diseases represent one of the major threats for salmonid aquaculture. Disease prevention by vaccination relies on the induction of protective antibody responses mediated by B-cells. Upon binding to a specific antigen during vaccination or infection, the B-cells become activated and mature into antibody secreting cells (ASC). The antibodies protect against re-infection and prevent spreading of ...
    • Atlantic salmon type I interferons - induction and antiviral activity 

      Svingerud, Tina (Doctoral thesis; Doktorgradsavhandling, 2013-03-22)
    • Atlantic salmon type I interferons: Protection against virus infection in vivo and function as adjuvants in a virus DNA vaccine. 

      Chang, Chia Jung (Doctoral thesis; Doktorgradsavhandling, 2016-08-25)
      Fish farming has been considered the importance resource for supplying food for the global requirement. Norway by far is the country that produces the most salmon in the world, and virus disease is one of the major problems that causes the economic loss in fish farming. For combating the diseases, the vaccine has been developed. In Norway, traditional vaccines based on inactivated virus are ...
    • Å temme torsken – fremveksten av norsk torskeoppdrettsnæring. En beretning om kollektivt entreprenørskap 

      Enoksen, Ken Harald (Doctoral thesis; Doktorgradsavhandling, 2018-03-19)
      Det overordnede tema for avhandlingen er fremveksten av nye næringer. Gjennom å analysere historien om norsk torskeoppdrett, fra de første ideer om torskeoppdrett oppstod frem til etableringen av verdens første børsnoterte torskeoppdrettsselskap - Codfarmers med tickeren "COD" på Oslo børs – bidrar avhandlingen med ny kunnskap til det «kunnskaps-hullet» som eksisterer innenfor feltet nye/gryende ...
    • Bacterial flagellin : a novel adjuvant for vaccine strategies 

      Hynes, Natasha (Doctoral thesis; Doktorgradsavhandling, 2011-10-18)
      Flagellin is the principal structural protein in the locomotive organ flagellum present on flagellated bacteria, and is known to be an important evolutionarily conserved PAMP. Flagellin has been shown to bind to the PRR TLR5 which induces innate immune system responses and signaling pathways. In mammals, much focus has been placed on this protein in vaccine studies for its possible function as an ...
    • "Bioactivity profile of barettin - With special focus on anti-inflammatory, antioxidant and anticoagulant activities" 

      Lind, Karianne Fredenfeldt (Doctoral thesis; Doktorgradsavhandling, 2015-04-17)
      The diversity of the marine species inhabiting the oceans makes them highly interesting as potential sources of bioactive molecules for various applications. The extreme environment in the Barents Sea, in terms of temperature and light availability, have forced its organisms to adapt to their surroundings by developing unique biomolecules, and Arctic marine organisms are therefore an excellent ...
    • A bioeconomic perspective on the Norwegian Barents Sea cod fishery 

      Eide, Arne (Doctoral thesis; Doktorgradsavhandling, 2008-11-14)