Sökning: "brown trout"

Visar resultat 11 - 15 av 61 avhandlingar innehållade orden brown trout.

  1. 11. Relations between metabolic rate, migration and behaviour in Atlantic salmon (Salmo salar) and brown trout (Salmo trutta)

    Författare :Linnea Lans; Larry Greenberg; Eva Bergman; Jörgen Johnsson; Karlstads universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Atlantic salmon; brown trout; Standard metabolic rate; behaviour; migration; Ethology and behavioural ecology; Etologi och beteendeekologi; Biology; Biologi;

    Sammanfattning :   ABSTRACT   Migration is common among populations of brown trout (Salmo trutta) and Atlantic salmon (Salmo salar). However, not all individuals in the same population migrate, a phenomenon referred to as partial migration. LÄS MER

  3. 12. Behavioural Effects and Central Nervous System Actions of Growth Hormone in Salmonid Fish

    Författare :Viktoria Johansson; Göteborgs universitet; []
    Nyckelord :growth hormone; dopamine; central nervous system; cerebrospinal fluid; behaviour; rainbow trout; Atlantic salmon; brown trout; salmonids; teleosts; fish;

    Sammanfattning : .... LÄS MER

  4. 13. Gonad and ejaculate allocation in alternative reproductive tactics of salmon and trout with reference to sperm competition

    Författare :Tomislav Vladić; Michael Taborsky; Stockholms universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; alternative reproductive tactics; sperm competition; brown trout; Atlantic salmon; ATP; ejaculate expenditure; motility; sperm morphology; trade-off; loaded raffle; zoologi; Zoology;

    Sammanfattning : Atlantic salmon, Salmo salar L., and brown trout, Salmo trutta L., exhibit alternative male maturation phenotypes, anadromous and precociously mature parr, which commonly endure in sperm competition at the spawning grounds. LÄS MER

  5. 14. Population regulation in migratory brown trout (Salmo trutta)

    Författare :Robert G. Titus; Uppsala universitet; []
    Nyckelord :NATURAL SCIENCES; NATURVETENSKAP;

    Sammanfattning : .... LÄS MER

  7. 15. Interspecific Interactions between Native Brown Trout and Invasive Brook Trout: Insights into Behaviour and Morphology

    Författare :Magnus L. Wallerius; Göteborgs universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Invasive species; Fish; Competition; Foraging; Management;

    Sammanfattning : The introduction of non-native species represents a global threat to ecosystems and biodiversity. In Europe, the introduction of the invasive brook trout (Salvelinus fontinalis) has led to species displacement and local extinction of native brown trout (Salmo trutta) populations. LÄS MER