Sökning: "Christer Wiklund"

Visar resultat 1 - 5 av 16 avhandlingar innehållade orden Christer Wiklund.

  1. 1. Ecological and evolutionary aspects on the host plant biology of Papilio machaon L

    Författare :Christer Wiklund; Stockholms universitet; []
    Nyckelord :NATURAL SCIENCES; NATURVETENSKAP; NATURVETENSKAP; NATURAL SCIENCES;

    Sammanfattning : .... LÄS MER

  2. 2. Plant polyploidy and interactions with insect herbivores

    Författare :Leena Arvanitis; Johan Ehrlén; Christer Wiklund; John N. Thompson; Stockholms universitet; []
    Nyckelord :NATURAL SCIENCES; NATURVETENSKAP; NATURVETENSKAP; NATURAL SCIENCES; diversicifation; herbivory; host plant preference; plant galls; plant-insect interactions; plant polyploidy; selection; spatial variation; trait-fitness relationship; Terrestrial ecology; Terrestisk ekologi; Plant Ecology; växtekologi;

    Sammanfattning : Polyploidization has been suggested to be a common mechanism for plant speciation. Polyploidy is associated with changes in plant traits and altered habitat preference. LÄS MER

  3. 3. The evolution of territoriality in butterflies

    Författare :Martin Bergman; Christer Wiklund; Ronald Rutowski; Stockholms universitet; []
    Nyckelord :territoriality; Lepidoptera; sexual selection; mating success; mate locating behaviour; resource-holding potential; motivation; courtship solicitation; NATURAL SCIENCES; NATURVETENSKAP; zoologisk ekologi; Animal Ecology;

    Sammanfattning : Competition over mating opportunities is a conspicuous characteristic of animal behaviour. In many butterfly species the males establish territories in places advantageous for encountering females. This thesis addresses questions about how territoriality has evolved and is maintained in butterflies. LÄS MER

  4. 4. The evolution of mating rates in Pieris napi

    Författare :Jonas Bergström; Christer Wiklund; Göran Arnqvist; Stockholms universitet; []
    Nyckelord :NATURAL SCIENCES; NATURVETENSKAP; NATURVETENSKAP; NATURAL SCIENCES; Terrestrial; freshwater and marine ecology; Terrestisk; limnisk och marin ekologi;

    Sammanfattning : In the green-veined white butterfly (Pieris napi), females obtain direct fitness benefits from mating multiply and studies have shown that fitness increases seemingly monotonically with number of matings. The reason is that at mating males transfer a large nutritious gift (a so called nuptial gift) to the females that the females use to increase both their fecundity and lifespan. LÄS MER

  5. 5. Två musikpedagogiska fält : en studie om kommunal musikskola och musiklärarutbildning

    Författare :Sture Brändström; Christer Wiklund; Umeå universitet; []
    Nyckelord :SOCIAL SCIENCES; SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; SAMHÄLLSVETENSKAP; SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; SOCIAL SCIENCES; SAMHÄLLSVETENSKAP; music education; music pedagogy; music instruction; ethnomu-sicology; music sociology; music teacher education; Musikpedagogik; Music Education;

    Sammanfattning : The thesis consists of two parts. One is directed towards municipal music schools, and one deals with music teacher education at university level. The purpose was to investigate the recruitment to these two educations, and to describe and explain how different student groups perceived and used their education. LÄS MER