Sökning: "Salmonid"

Visar resultat 11 - 15 av 44 avhandlingar innehållade ordet Salmonid.

  1. 11. The evolutionary study of the immunoglobulin heavy chain genes of a bony fish, rainbow trout (Oncorhynchus mykiss)

    Författare :Elisabet Andersson; Gregory W. Warr; Umeå universitet; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; immunoglobulin; heavy chain variable region gene; VH; rainbow trout; evolution; salmonid fish;

    Sammanfattning : .... LÄS MER

  3. 12. Stress Coping Strategies in Rainbow Trout (Oncorhynchus mykiss)

    Författare :Joachim Schjolden; Svante Winberg; Felicity Huntingford; Uppsala universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Biology; Salmonid fish; Stress coping; Serotonin; Cortisol; Catecholamines; Monoaminoxidase; Tryptophan; Monoamines; Behaviour; Stress; Biologi; Biology; Biologi;

    Sammanfattning : Animals show a great variety in physiological and behavioural responses to stressors. These responses are often bimodally distributed within populations and show consistency on an individual level over time and across situations, which in terrestrial vertebrates have been identified as proactive and reactive stress coping strategies. LÄS MER

  4. 13. Lake bathymetry as driver of salmonid population size structure and biomass

    Författare :Sven Norman; Pär Byström; Karin A. Nilsson; Jan Karlsson; Per-Arne Amundsen; Umeå universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Lake bathymetry; habitat-specific resource production; ontogenetic niche shifts; size structure; Arctic char; brown trout; populationsbiologi; Population Biology; Limnology; limnologi; zooekologi; Animal Ecology;

    Sammanfattning : Most fish species undergo ontogenetic niche shifts from feeding on pelagic zooplankton, to larger benthic invertebrates and in some cases also to fish. These ontogenetic niche shifts have strong impact on the interactions within and between species, with effects on individual growth, population abundance and food web dynamics. LÄS MER

  5. 14. Metabolomics as a tool to evaluate salmonid response to alternative feed ingredients

    Författare :Ken Cheng; Sveriges lantbruksuniversitet; Sveriges lantbruksuniversitet; []
    Nyckelord :LANTBRUKSVETENSKAPER; AGRICULTURAL SCIENCES; LANTBRUKSVETENSKAPER; AGRICULTURAL SCIENCES;

    Sammanfattning : Aquaculture has largely expanded in the last decades to satisfy the growing market demands for fish products. Fishmeal and fish oil, which are traditionally used in salmonid feeds, are becoming unsustainable. Development of aquafeeds based on alternative ingredients are needed to overcome the ecological challenges. LÄS MER

  7. 15. NMR metabolomics and lipid analyses in salmonid tissue : response to alternative feeds

    Författare :Liane Wagner; Sveriges lantbruksuniversitet; Sveriges lantbruksuniversitet; []
    Nyckelord :LANTBRUKSVETENSKAPER; AGRICULTURAL SCIENCES;

    Sammanfattning : Salmonids are fatty fish and contain high amounts of omega-3 polyunsaturated fatty acids, beneficial in human nutrition. However, the aquaculture industry has expanded greatly in recent decades, increasing demand for fishmeal (FM) and fish oil (FO) for fish feed, while the supply of fish raw materials has remained static or declined. LÄS MER