Search for dissertations about: "Polygonia"

Showing result 1 - 5 of 10 swedish dissertations containing the word Polygonia.

  2. 1. Phylogenetic perspective on host plant use, colonization and speciation in butterflies

    Author : Elisabet Weingartner; Sören Nylin; Niklas Wahlberg; Felix Sperling; Stockholms universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Oscillation hypothesis; speciation; Polygonia; Celastrina; Pararge; Terrestrial; freshwater and marine ecology; Terrestisk; limnisk och marin ekologi; zoologisk ekologi; Animal Ecology;

    Abstract : In this thesis we have studied speciation in three butterfly genera Polygonia (Nymphalidae, Nymphalini), Pararge (Nymphalidae, Satyrinae) and Celastrina (Lycaenidae: Polyommatinae). In the first paper a dated phylogeny, based on molecular data, of Polygonia was constructed. We found strong conflict between the nDNA and mtDNA datasets. READ MORE

  4. 2. Life history and host plant choice in the comma butterfly, Polygonia c-album

    Author : Lina Söderlind; Stockholms universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Ethology and behavioural ecology; Etologi och beteendeekologi; Animal Ecology; zoologisk ekologi;

    Abstract : .... READ MORE

  5. 3. Effect of climate and land use on niche utilization and distribution of nettle-feeding  butterflies

    Author : Hélène Audusseau; Niklas Janz; Sören Nylin; Matthew Forister; Stockholms universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; zoologisk ekologi; Animal Ecology;

    Abstract : Anthropogenic changes in climate and land use are causing a dramatic erosion of biodiversity. To understand this erosion, and predict future transformations of biodiversity, we need to understand better species’ response to these changes at different spatial and temporal scales. READ MORE

  6. 4. The plasticity and geography of host use and the diversification of butterflies

    Author : Jessica Slove Davidson; Niklas Janz; Tommi Nyman; Stockholms universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Nymphalidae; host range; phylogeny; distribution; latitude; phylogeography; local specialisation; colonisation; host shift; polyphagy; speciation; diversification; zoologisk ekologi; Animal Ecology;

    Abstract : Our world is changing rapidly and factors like urbanisation, changed agricultural practices and climate change are causing losses in butterfly diversity. It is therefore of importance to understand the source of their diversity. READ MORE

  7. 5. Mechanistic aspects of host plant preference in butterflies

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

    Abstract : 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. READ MORE