Search for dissertations about: "Pararge"

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

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. Visual mate detection and mating success by resident and nonresident males in a territorial woodland butterfly, Pararge aegeria

   Author : Martin Bergman; Stockholms universitet; []
   Keywords : ;

   Abstract : .... READ MORE

5. 3. The sensory morphology of insect pollinators : From structure to behaviour and ecology

   Author : Zahra Moradinour; Emily Baird; Karl Gotthard; Karin Nordstrom; Stockholms universitet; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; Insect pollinators; butterfly; bumblebee; sensory system; developmental temperature; light habitat; Functional Zoomorphology; funktionell zoomorfologi;

   Abstract : Insect pollinators play an important role in balancing our ecosystems and maintaining plant and food diversity. Due to anthropogenic activities such as global warming, habitat loss and degradation, pesticides, and pathogens, many pollinator populations have been undergoing drastic declines in recent decades. READ MORE

6. 4. The diapause switch : Evolution of alternative developmental pathways in a butterfly

   Author : Inger Marie Aalberg Haugen; Karl Gotthard; Dan Hahn; Stockholms universitet; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; Developmental plasticity; phenotypic plasticity; developmental switch; threshold trait; life-cycle regulation; direct development; Lepidoptera; zoologisk ekologi; Animal Ecology;

   Abstract : Diapause decision is a classic example of a threshold switch mechanism with cascading effects on morphology, behaviour and life-history traits. This thesis addresses the downstream effects of the insect diapause switch, with the main focus on pathway-specific regulation of life-history traits, using the speckled wood butterfly (Pararge aegeria) as a study species. READ MORE

7. 5. The evolution of territoriality in butterflies

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

   Abstract : 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. READ MORE