Search Results - (Author, Cooperation:F. Nilsen)

Showing 1 - 5 results of 5, query time: 0.14s Refine Results
  1. 1
    Staff View
    Publication Date:
    2011-08-13
    Publisher:
    Nature Publishing Group (NPG)
    Print ISSN:
    0028-0836
    Electronic ISSN:
    1476-4687
    Topics:
    Biology
    Chemistry and Pharmacology
    Medicine
    Natural Sciences in General
    Physics
    Keywords:
    Animals ; Evolution, Molecular ; Gadus morhua/*genetics/*immunology ; Genome/*genetics ; Genomics ; Hemoglobins/genetics ; Immune System/*immunology ; Immunity/*genetics/immunology ; Major Histocompatibility Complex/genetics/immunology ; Male ; Polymorphism, Genetic/genetics ; Synteny/genetics ; Toll-Like Receptors/genetics
    Published by:
    http://www.nature.com/

    Latest Papers from Table of Contents or Articles in Press
  2. 2
    Holst, J. C. ; Nilsen, F. ; Hodneland, K. ; Nylund, A.

    Oxford, UK : Blackwell Publishing Ltd
    Published 1993
    Staff View
    ISSN:
    1095-8649
    Source:
    Blackwell Publishing Journal Backfiles 1879-2005
    Topics:
    Biology
    Notes:
    The main food items of postsmolt Atlantic salmon caught in the Norwegian sea during summer 1991 were Parathemisto spp. and herring (Chipca harengus). The most prevalent parasite species were Chloromyxion sp., Apatemon sp., H. adunction, A simplex and I. salmonis.
    Type of Medium:
    Electronic Resource
    URL:
    http://dx.doi.org/10.1111/j.1095-8649.1993.tb00402.x

    Articles: DFG German National Licenses
  3. 3
    Glover, K. A. ; Nilsen, F. ; Skaala, Ø. ; Taggart, J. B. ; Teale, A. J.

    Oxford, UK : Blackwell Publishing Ltd
    Published 2001
    Staff View
    ISSN:
    1095-8649
    Source:
    Blackwell Publishing Journal Backfiles 1879-2005
    Topics:
    Biology
    Notes:
    Two experimental groups comprising mixed Norwegian sea run and freshwater resident brown trout Salmo trutta were infected with sea lice Lepeophtheirus salmonis in replicate tanks. Comparison of mean abundance and louse development between the sea run and resident groups revealed highly significant differences in lice abundance. The resident trout had an average abundance ± of 6·3±0·37 and 6·6±0·43 lice whilst the sea trout had an average abundance of 3·5 ±0·25 and 3·3 ±0·28 lice 29 days post infection at 9° C. No differences in development of lice, of either sex, were detected between the groups. As host groups were naive to sea lice at the start of the experiment, this suggests that there was a significant difference in susceptibility to sea lice infection between them, which may be genetically determined.
    Type of Medium:
    Electronic Resource
    URL:
    http://dx.doi.org/10.1111/j.1095-8649.2001.tb00216.x

    Articles: DFG German National Licenses
  4. 4
    Saksvik, M ; Nilsen, F ; Nylund, A ; Berland, B

    Oxford UK : Blackwell Science Ltd
    Published 2001
    Staff View
    ISSN:
    1365-2761
    Source:
    Blackwell Publishing Journal Backfiles 1879-2005
    Topics:
    Biology
    Medicine
    Notes:
    Atlantic Salmon, Salmo salar L., experimentally infected with marine Eubothrium sp. were kept together with uninfected salmon in the laboratory for 11 months in two tanks, 80 infected and 80 uninfected in each tank. The infected fish had a reduced growth rate compared with the uninfected fish. Significant differences in growth between infected and uninfected fish were not observed until several months post-infection. There was no correlation between the number of Eubothrium sp. and fish weight, indicating that even low intensity alters the growth rate of the salmon. The cestode had the same effect on both sexes of salmon. Haematocrit level was found to be significantly lower in infected compared with uninfected salmon in one of the samples during the experiment.
    Type of Medium:
    Electronic Resource
    URL:
    http://dx.doi.org/10.1046/j.1365-2761.2001.00276.x

    Articles: DFG German National Licenses
  5. 5
    Johansen, R ; Sommerset, I ; Tørud, B ; Korsnes, K ; Hjortaas, M J ; Nilsen, F ; Nerland, A H ; Dannevig, B H

    Oxford, UK : Blackwell Science Ltd
    Published 2004
    Staff View
    ISSN:
    1365-2761
    Source:
    Blackwell Publishing Journal Backfiles 1879-2005
    Topics:
    Biology
    Medicine
    Notes:
    An outbreak of nodavirus infection in turbot larvae is described with respect to histopathology, immunohistochemistry, cell culture cultivation, RT-PCR amplification and sequence analysis of the capsid protein gene RNA2. Affected turbot developed classical signs of viral encephalopathy and retinopathy (VER) with abnormal swimming behaviour and high mortality levels. In the acute stage of infection, light microscopy revealed vacuolation of the central nervous system (CNS), with positive immunohistochemical staining for nodavirus. Later in the infection, CNS lesions appeared more chronic and contained clusters of cells immunopositive for nodavirus. Bacterial overgrowth in the intestines of the fish may have provoked or influenced the course of the nodavirus infection. We were unable to propagate the virus in cell culture. While RT-PCR using primers designed to detect Atlantic halibut nodavirus gave negative results, further testing with primers complementary to a more conserved region of RNA2 resulted in amplification of a product of the expected size. The entire RNA2 segment was cloned and sequenced. Sequence alignment showed that the turbot nodavirus (TNV) was different from previously described fish nodaviruses. In addition, phylogenetic analysis based on an 823 nt region of the sequence indicated that TNV clustered outside the four established fish nodavirus genotypes, suggesting a fifth genotype within the betanodaviruses.
    Type of Medium:
    Electronic Resource
    URL:
    http://dx.doi.org/10.1111/j.1365-2761.2004.00581.x

    Articles: DFG German National Licenses