Recent additions

  • Piscine Orthoreovirus (PRV)-3, but Not PRV-2, Cross-Protects against PRV-1 and Heart and Skeletal Muscle Inflammation in Atlantic Salmon 

    Malik, Muhammad Salman; Teige, Lena Hammerlund; Braaen, Stine; Olsen, Anne Berit; Nordberg, Monica; Amundsen, Marit; Kannimuthu, Dhamotharan; Svenning, Steingrim; Edholm, Eva-Stina Isabella; Takano, Tomokazu; Jørgensen, Jorunn; Wessel, Øystein; Rimstad, Espen; Dahle, Maria (Journal article; Tidsskriftartikkel; Peer reviewed, 2021-03-06)
    Heart and skeletal muscle inflammation (HSMI), caused by infection with Piscine orthoreovirus-1 (PRV-1), is a common disease in farmed Atlantic salmon (Salmo salar). Both an inactivated whole virus vaccine and a DNA vaccine have previously been tested experimentally against HSMI and demonstrated to give partial but not full protection. To understand the mechanisms involved in protection against HSMI ...
  • Adding zooplankton to the OSMAC toolkit: Effect of grazing stress on the metabolic profile and bioactivity of a diatom 

    Osvik, Renate Døving; Ingebrigtsen, Richard Andre; Norrbin, Fredrika; Andersen, Jeanette Hammer; Eilertsen, Hans Christian; Hansen, Espen Holst (Journal article; Tidsskriftartikkel; Peer reviewed, 2021-02-03)
    “One strain many compounds” (OSMAC) based approaches have been widely used in the search for bioactive compounds. Introducing stress factors like nutrient limitation, UV-light or cocultivation with competing organisms has successfully been used in prokaryote cultivation. It is known that diatom physiology is affected by changed cultivation conditions such as temperature, nutrient concentration and ...
  • Flashing light emitting diodes (LEDs) induce proteins, polyunsaturated fatty acids and pigments in three microalgae 

    Lima, Serena; Schulze, Peter Simon Claus; Schüler, Lisa M.; Rautenberger, Ralf; Morales-Sanchez, Daniela; Santos, Tamára F.; Pereira, Hugo; Varela, João C.S.; Scargiali, Francesca; Wijffels, Rene Hubertus; Kiron, Viswanath (Journal article; Tidsskriftartikkel; Peer reviewed, 2020-11-25)
    As the periodic emission of light pulses by light emitting diodes (LEDs) is known to stimulate growth or induce high value biocompounds in microalgae, this flashing light regime was tested on growth and biochemical composition of the microalgae <i>Nannochloropsis gaditana, Koliella antarctica</i> and <i>Tetraselmis chui</i>. At low flashing light frequencies (e.g., 5 and 50 Hz, Duty cycle = 0.05), ...
  • Produksjonsindusert stress på rogn (Salmo salar L.) og effekter på immun- og stressrelaterte gener etter smitte av plommesekkyngel med Yersinia ruckeri 

    Sætre, Per Kristian (Master thesis; Mastergradsoppgave, 2016-05-18)
    I denne oppgaven blir det sett på hvordan produksjonsindusert stress i form av mekanisk sjokking og/eller transport under embryogenesen (300-400 døgngrader etter befruktning (dgr)) ville påvirke overlevelse og uttrykk av immun- og stressrelaterte gener på plommesekkstadiet (740-900 dgr) etter en immunologisk utfordring - badsmitte med <i>Yersinia ruckeri</i>. Utvalgte immun- og stressrelaterte gener ...
  • Humorale immunresponser i bukhule og systemiske organer hos Atlantisk laks (Salmo salar L.) – sammenligning av levende og inaktivert salmonid alphavirus 3 administrert i bukhulen 

    Abrahamsen, Mathias (Master thesis; Mastergradsoppgave, 2019-05-15)
    Pankreassykdom (PD) er en sykdom som forårsakes av salmonid alphavirus (SAV) og anses som en av de mest utbredte virussykdommene i dagens oppdrettsnæring. I tillegg til at sykdommen fører til store tap for næringa, utgjør sykdommen også et stort problem sett fra et fiskevelferds-perspektiv. Siden det ikke finnes behandling mot sykdommen ligger fokuset på forebyggende tiltak. Det er utviklet flere ...
  • Hav, fisk og ressursforvaltning i nordområdene 

    Hoel, Alf Håkon (Journal article; Tidsskriftartikkel; Peer reviewed, 2020-12-08)
    Mesteparten av norske havområder ligger nord for polarsirkelen og er åsted for noen av verdens rikeste fiskerier. De største fiskebestandene er delt med andre land, og internasjonalt samarbeid om ressursforvaltningen er derfor en viktig dimensjon ved nordområdepolitikken. Slikt samarbeid er basert på globale normer om hvordan levende marine ressurser skal forvaltes og deles og foregår på en rekke ...
  • Environmental DNA for assessing abundance of salmon lice (Lepeophtheirus salmonis) in salmon (Salmo salar) farms 

    Nygaard, Magnus (Master thesis; Mastergradsoppgave, 2018-05-18)
    The aim of this thesis was to investigate an alternative way to detect salmon lice (Lepeophtheirus salmonis) in the field, and investigate the possibility of counting salmon lice in a commercial farming facility of Atlantic salmon (Salmo salar) by using methods and tools based on environmental DNA (henceforth referred to as eDNA). This was performed by sampling water in a salmon farming facility ...
  • Spiser studenter i Nord-Norge nok fisk? En spørreundersøkelse blant studenter ved Universitetet i Tromsø 

    Johansen, Trygve (Master thesis; Mastergradsoppgave, 2018-05-15)
    Et godt kosthold er av stor betydning for helsen og livskvaliteten. Et godt og variert kosthold bidrar til å forebygge mot en rekke livsstilsykdommer som hjerte- og karsykdommer, diabetes, fedme og overvekt. Fisk og annen sjømat er en nøkkelstein i et godt kosthold og gir viktige næringsstoffer som vitaminer (A og D), mineraler (selen og jod), proteiner og essensielle fettsyrer (omega-3 fettsyrene ...
  • A visitor that has come to stay? The case of pink salmon (Oncorhynchus gorbuscha) in Norway 

    Aspelund, Andrea Sofie Hansen (Master thesis; Mastergradsoppgave, 2020-05-15)
    This thesis is dedicated to the case of the pink salmon (Oncorhynchus gorbuscha) in Norway. The pink salmon has a large native range and is indigenous to regions of the Pacific Ocean. It was deliberately introduced into rivers that drained into the White Sea by the Soviet Union. This was done through several attempts reaching from 1957 to 2001. These attempts resulted in secondary expansion to the ...
  • Biokjemisk sammensetning og bioaktivitet i enzymatisk hydrolyserte torskehoder 

    Gabrielsen, Ronja Amalie (Master thesis; Mastergradsoppgave, 2020-05-15)
    I Norge utgjør ikke-smittsomme sykdommer hele 87 % av sykdomsbyrden (FHI, 2018). Hovedårsaken til disse sykdommene er feilernæring (Mozaffarian, 2016). At fisk og sjømat er bra for helsen er godt akseptert, men helsefordelene har i hovedsak vært knyttet til den gunstige fettsyresammensetningen i sjømat. I de senere år har interessen for bioaktive komponenter økt, og marint restråstoff kan være en ...
  • Biochemical composition and antioxidant capacity of two sea cucumbers (Cucumaria frondosa and Parastichopus tremulus) 

    Edvardsen, Celine (Master thesis; Mastergradsoppgave, 2020-05-15)
    Sea cucumber is one of the most expensive seafood products in the world and dried sea cucumbers can be valued at more than USD 300 per kilogram for Astichopus japonicus, which is one of the highest priced species. Both market and consumption are centred in East- Asia. Sea cucumbers are sold in various forms, but the majority are distributed to the ’beche-de-mer’ market (gutted, boiled and dried ...
  • Ecological speciation in European whitefish is driven by a large‐gaped predator 

    Öhlund, Gunnar; Bodin, Mats; Nilsson, Karin; Öhlund, Sven-Ola; Mobley, Kenyon B.; Hudson, Alan G.; Peedu, Mikael; Brännström, Åke; Bartels, Pia; Præbel, Kim; Hein, Catherine L.; Johansson, Petter; Englund, Göran (Journal article; Tidsskriftartikkel; Peer reviewed, 2020-05-13)
    Lake‐dwelling fish that form species pairs/flocks characterized by body size divergence are important model systems for speciation research. Although several sources of divergent selection have been identified in these systems, their importance for driving the speciation process remains elusive. A major problem is that in retrospect, we cannot distinguish selection pressures that initiated divergence ...
  • Effects of green tea- and amla extracts on quality and melanosis of Indian white prawn (Fenneropenaeus indicus, Milne Edwards, 1837) during chilled storage 

    Firdous, Aimen; Ringø, Einar; Elumalai, Preetham (Journal article; Tidsskriftartikkel; Peer reviewed, 2020-09-28)
    Effect of ethanol extracts of green tea (Camellia sinensis L.) and amla (Phyllanthus emblica Linn) were investigated on quality and melanosis of chilled stored Indian white prawn (Fenneropenaeus indicus) during 28 days. Extracts were subjected to antioxidant assays viz.1,1-diphenyl-2-picryl hydrazyl radical reducing power methods (DPPH), total antioxidant capacity (TAC), total phenolic content (TPC) ...
  • The Transformation of Extralegal Principles into Legal Principles by the International Court of Justice in The Hague: Illustrated by a Peaceful Delimitation of «the Promised Land» 

    Ørebech, Peter Th (Journal article; Tidsskriftartikkel; Peer reviewed, 2020)
    Social norms are mixtures of extralegal and legal principles. The International Court of Justice‟ in The Hague‟s (ICJ) adjudication subtracts normative structures from different sources, moral, ethical, religious etc. dogmas amplifying its case law. The failing Israel-Palestine reconciliation that results from “power asymmetries” and “supreme emergency exception”, illustrates how absence of concomitant ...
  • Infection and microbial molecular motifs modulate transcription of the interferon-inducible gene ifit5 in a teleost fish 

    Bela-Ong, Dennis; Greiner-Tollersrud, Linn; van der Wal, Yorick Andreas; Jensen, Ingvill; Seternes, Ole Morten; Jørgensen, Jorunn (Journal article; Tidsskriftartikkel; Peer reviewed, 2020-05-21)
    Interferon-induced proteins with tetratricopeptide repeats (IFITs) are involved in antiviral defense. Members of this protein family contain distinctive multiple structural motifs comprising tetratricopeptides that are tandemly arrayed or dispersed along the polypeptide. IFIT-encoding genes are upregulated by type I interferons (IFNs) and other stimuli. IFIT proteins inhibit virus replication by ...
  • Discovery and Biosynthetic Investigation of a New Antibacterial Dehydrated Non‐Ribosomal Tripeptide 

    Wang, Shan; Fang, Qing; Lu, Zhou; Gao, Yingli; Trembleau, Laurent; Ebel, Rainer; Andersen, Jeanette Hammer; Philips, Carol; Law, Samantha; Deng, Hai (Journal article; Tidsskriftartikkel; Peer reviewed, 2020-10-27)
    Dehydroalanine (Dha) and dehydrobutyrine (Dhb) display considerable flexibility in a variety of chemical and biological reactions. Natural products containing Dha and/or Dhb residues are often found to display diverse biological activities. While the (Z) geometry is predominant in nature, only a handful of metabolites containing (E)‐Dhb have been found thus far. Here we report discovery of a new ...
  • Haematology and clinical blood chemistry in harbour porpoises (Phocoena phocoena) from the inner Danish waters 

    Siebert, Ursula; Blanchet, Marie-Anne; Teilmann, Jonas; Anderson Hansen, Kirstin; Kristensen, Jakob; Bunskoek, Paulien; Dietz, Rune; Desforges, Jean-Pierre; Sonne, Christian; Desportes, Geneviève (Journal article; Tidsskriftartikkel, 2020-07-13)
    Harbour porpoises (<i>Phocoena phocoena</i>) in the Baltic Sea are under increasing pressure from anthropogenic activities, which affect the overall health of populations. Individuals’ haematologic and biochemistry parameters are known to be linked to a population’s health status and are therefore useful tools for cross-population comparisons and to assess health patterns of a population through ...
  • Administration of watermelon rind powder to Nile tilapia (Oreochromis niloticus) culture under biofloc system: Effect on growth performance, innate immune response, and disease resistance 

    Doan, Hien Van; Lumsangkul, Chompunut; Hoseinifar, Seyed Hossein; Hung, Tran Quang; Stejskal, Vlastimil; Ringø, Einar; Dawood, Mahmoud A.O.; Esteban, Maria Ángeles (Journal article; Tidsskriftartikkel; Peer reviewed, 2020-06-07)
    An eight-week experiment was performed to assess the effectiveness of watermelon rind powder (WMRP) on growth efficiency, immunity, and disease resistance of Nile tilapia, <i>O. niloticus</i>. Three hundred fish (17.14 ± 0.12 g) were fed five diets; 0 (Diet 1- control), 20 g kg<sup>−1</sup> WMRP (Diet 2), 40 g kg<sup>−1</sup> WMRP (Diet 3), 80 g kg<sup>−1</sup> WMRP (Diet 4), and 160 g kg<sup>−1</sup> ...
  • Thee level of eicosapentaenoic (EPA),but not docosahexaenoic acid (DHA) is related to formulation and concentration of EPA and DHA in feed 

    Seternes, Tore; Johansson, Gunhild S.; Evje, Iselin; Olsen, Ragnar Ludvig (Journal article; Tidsskriftartikkel; Peer reviewed, 2020-04-22)
    The present study investigated how the concentration of PUFA in blood and muscle of Atlantic salmon (<i>Salmo salar</i> L.) changed when fed 4 diets containing very different amounts of LC-PUFA in fresh water for 84 days. The n-3 LC-PUFA constituted 4.4, 24.2, 18.4, and 51.5% of the total fatty acids in the diets made with rapeseed oil, anchoveta oil, a combination of rapeseed oil (60%) and anchoveta ...
  • Salmonid Alphavirus Subtype 3 Induces Prolonged Local B Cell Responses in Atlantic Salmon (Salmo salar) After Intraperitoneal Infection 

    Jenberie, Shiferaw; Penaranda, Ma Michelle Demogina; Thim, Hanna Leena; Styrvold, Morten Bay; Strandskog, Guro; Jørgensen, Jorunn B; Jensen, Ingvill (Journal article; Tidsskriftartikkel; Peer reviewed, 2020-09-10)
    B cell responses are a crucial part of the adaptive immune response to viral infection. Infection by salmonid alphavirus subtype 3 (SAV3) causes pancreas disease (PD) in Atlantic salmon (<i>Salmo salar</i>) and is a serious concern to the aquaculture industry. In this study, we have used intraperitoneal (IP) infection with SAV3 as a model to characterize local B cell responses in the peritoneal ...

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