Sökning: "lek naturvetenskap"
Visar resultat 1 - 5 av 15 avhandlingar innehållade orden lek naturvetenskap.
1. The estrogen receptor in fish and effects of synthetic estrogens in the environment - Ecological and evolutionary perspectives and societal awareness
Sammanfattning : Synthetic hormones are a group of pharmaceuticals used for various human and animal treatments. However, consumption and disposal of these substances have also given rise to negative effects and environmental problems for organisms in the wild which is why these substances have been classified as estrogenic endocrine-disrupting chemicals (EDCs). LÄS MER
2. Population Genetic Structure of Black Grouse (Tetrao tetrix) : From a Large to a Fine Scale Perspective
Sammanfattning : Black grouse (Tetrao tetrix) is a bird species with a lek mating system found in the Palearctic boreal taiga. It is assumed that it has a continuous distribution along Scandinavia and Siberia, whereas in Central Europe it has declined during the last decades. LÄS MER
3. Genetic Structuring and the Evolution of Lekking Behaviour in the White-bearded Manakin, Manacus manacus
Sammanfattning : Genetic structuring is common in natural populations. It is important to identify and consider population structure when studying evolutionary processes. Recently, the discovery of genetic structuring in some lekking bird species has opened up new perspectives on our understanding of the evolution of lek mating systems. LÄS MER
4. Chemical communication in mating shore crabs Carcinus maenas
Sammanfattning : Locating and evaluating a suitable partner for mating is one of the most important events in any sexually reproducing organism. To achieve this, an animal must be able to locate its partner over both long and short distances, and finally evoke the proper mating behaviour. LÄS MER
5. Lärande och låtsaslek - ett kognitionsvetenskapligt utvecklingsperspektiv
Sammanfattning : Denna licentiatuppsats är en tvärvetenskaplig undersökning kring lärandets relation till låtsaslek. Ur ett kognitionsvetenskapligt perspektiv är förmågan att låtsas något av en gåta. Därför är det särskilt intressant att undersöka hur barnet kan nå denna förmåga. LÄS MER