Sökning: "salmonid"

Visar resultat 1 - 5 av 44 avhandlingar innehållade ordet salmonid.

  1. 1. Genomic dynamics over contemporary time frames in wild salmonid populations

    Författare :Sara Kurland; Linda Laikre; Kathryn Elmer; Stockholms universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Conservation genomics; genetic monitoring; whole-genome sequencing; metapopulation; salmonid; brown trout; effective population size; Pool-seq; genetic connectivity; intraspecific diversity; sympatric populations; populationsgenetik; Population Genetics;

    Sammanfattning : Genetic diversity is the foundation of all biological variation. An approach for sustainable use and protection of genetic diversity is continuous sampling over space and time, i.e. monitoring. LÄS MER

  3. 2. Growth in salmonid otoliths

    Författare :Henrik Mosegaard; Uppsala universitet; []
    Nyckelord :NATURAL SCIENCES; NATURVETENSKAP;

    Sammanfattning : .... LÄS MER

  4. 3. Teleost reproduction: Aspects of Arctic char (Salvelinus alpinus) oocyte growth and maturation

    Författare :Håkan Berg; Per-Erik Olsson; Birgitta Norberg; Umeå universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Zoophysiology; Salmonid; oocyte growth; vitellogenin; vitelline envelope protein; stress; cortisol; oocyte maturation; membrane receptor; Zoofysiologi; Animal physiology; Zoofysiologi; Zoophysiology; zoofysiologi;

    Sammanfattning : In all vertebrate species, reproduction is a hormonally controlled process, important for growth and maturation of gonads and germ cells. Production of functional germ cells is of outmost importance to secure the survival of a species. Fish comprises 50% of the known vertebrates and are found in aquatic habitats all over the world. LÄS MER

  5. 4. Fine stream wood : effects on drift and brown trout (Salmo trutta) growth and behaviour

    Författare :Åsa Enefalk; Eva Bergman; Anders Nilsson; Stanley Gregory; Karlstads universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; stream fish; wood; salmonid; trout; aquatic invertebrates; behaviour; sheltering; Biology; Biologi;

    Sammanfattning : Stream ecosystems and their riparian zones have previously been regarded as two different ecosystems, linked through numerous reciprocal subsidies. Today, ecologists agree that the stream and the riparian zone should be regarded as one system, the stream-riparian ecosystem, which is characterised largely by the subsidies between land and water. LÄS MER

  7. 5. Early life stages of brown trout - Anti-predator responses under warming winters

    Författare :Karl Filipsson; Eva Bergman; Ann Erlandsson; Johan Watz; Martin Österling; Neil Metcalfe; Karlstads universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; behaviour; climate; cortisol; development; egg incubation; embryo; gene expression; ice; light; mRNA; piscivorous; poikilotherm; salmonid; stress; temperature; Biology; Biologi;

    Sammanfattning : During winter, juvenile salmonids in boreal streams are vulnerable to predation, mainly from mammals and birds. Encounters with terrestrial predators can be reduced or avoided if fish limit activity to the darker periods of the day or to periods with surface ice. LÄS MER