Sökning: "0 fish behaviour"
Visar resultat 1 - 5 av 29 avhandlingar innehållade orden 0 fish behaviour.
1. Selective serotonin re-uptake inhibitors in the environment : Effects of citalopram on fish behaviour
Sammanfattning : Selective serotonin re-uptake inhibitors (SSRIs) are a class of anxiolytic and anti-depressant drugs. SSRIs act on the evolutionarily ancient serotonergic system which is virtually identical throughout the vertebrate phylum. LÄS MER
2. Foraging behaviour in benthivorous fish
Sammanfattning : The foraging ability of an organism is essential since it affects various traits, e.g. growth, reproduction effort, social status and, ultimately, fitness. LÄS MER
3. Fish coping with stress-Physiology and behaviour in salmonids with focus on stress coping styles, rearing conditions and smolt migration
Sammanfattning : When animals are reared for conservational releases it is paramount to avoid reducing genetic and phenotypic variation over time. Therefore, an understanding of how behavioural and physiological traits affect the performance of an individual both within the captive and the wild environment is required. LÄS MER
4. Migratory behaviour of Baltic salmon (Salmo salar L.) : adaptive significance of annual cycles
Sammanfattning : This thesis evaluates the adaptive significance of annual cycles on the migratory behaviour of Baltic salmon (Salmo salar L.). The studies have included field experiments as well as laboratory studies gf maturity and migratory behaviour patterns of smolts and postsmolts mainly from the Angerman river population. LÄS MER
5. Predator effects on behaviour and life-history of prey
Sammanfattning : In this thesis I investigate predator-induced effects on behavioural and life-history characteristics of prey. At any moment a given predator is capable of attacking a small number of prey. LÄS MER