Sökning: "Salmonid"
Visar resultat 1 - 5 av 44 avhandlingar innehållade ordet Salmonid.
1. Genomic dynamics over contemporary time frames in wild salmonid populations
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
2. Growth in salmonid otoliths
Sammanfattning : .... LÄS MER
3. Teleost reproduction: Aspects of Arctic char (Salvelinus alpinus) oocyte growth and maturation
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
4. Fine stream wood : effects on drift and brown trout (Salmo trutta) growth and behaviour
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
5. Early life stages of brown trout - Anti-predator responses under warming winters
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