Sökning: "Butterflies"

Visar resultat 16 - 20 av 63 avhandlingar innehållade ordet Butterflies.

  1. 16. Stabilizing selection on body size in butterflies

    Författare :David Berger; Stockholms universitet; []
    Nyckelord :;

    Sammanfattning : .... LÄS MER

  3. 17. Oviposition strategies in butterflies and consequences for conservation

    Författare :Anders Bergström; Sören Nylin; Jeremy A. Thomas; Stockholms universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Terrestrial; freshwater and marine ecology; Terrestisk; limnisk och marin ekologi;

    Sammanfattning : Oviposition strategies are an important component of life history evolution in insects. Oviposition is a complex behaviour, where females must locate suitable habitat patches, locate oviposition sites, evaluate the quality, and finally decide how many eggs to lay. LÄS MER

  4. 18. Mechanistic aspects of host plant preference in butterflies

    Författare :Alexander Schäpers; Stockholms universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; zoologisk ekologi; Animal Ecology; etologi; Ethology; zoologi; Zoology;

    Sammanfattning : Searching and locating resources is essential for survival. In herbivorous insects search behavior is conducted on several scales, requiring input and integration of information from different sensory modalities. LÄS MER

  5. 19. Functional genomics of diapause in two temperate butterflies

    Författare :Peter Pruisscher; Karl Gotthard; Dieter Ebert; Stockholms universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; diapause induction; adaptation; genomics; transcriptomics; populationsgenetik; Population Genetics;

    Sammanfattning : Natural selection will act on a given phenotype to maximize fitness in a particular environment, even if this would result in reduced fitness in other environments. In insects some of the strongest selection pressures act on timing life cycles to seasonal variation in environmental conditions, in order to maximize growth, reproduction, and to anticipate the onset of winter. LÄS MER

  7. 20. Evolution of Dispersal and Habitat Exploration in Butterflies

    Författare :Ulf Norberg; Hans Van Dyck; Stockholms universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Ethology and behavioural ecology; Etologi och beteendeekologi; etologi; Ethology;

    Sammanfattning : The development of wings may be one of the most important reasons for the great diversity among insects. Being able to move makes it possible to colonise new areas and explore resources in the surroundings. However, developing dispersal-related traits, like wings or flight muscles, is costly and moving can also be dangerous. LÄS MER