Sökning: "Pararge"
Visar resultat 1 - 5 av 10 avhandlingar innehållade ordet Pararge.
1. Phylogenetic perspective on host plant use, colonization and speciation in butterflies
Sammanfattning : 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. LÄS MER
2. Visual mate detection and mating success by resident and nonresident males in a territorial woodland butterfly, Pararge aegeria
Sammanfattning : .... LÄS MER
3. The sensory morphology of insect pollinators : From structure to behaviour and ecology
Sammanfattning : 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. LÄS MER
4. The diapause switch : Evolution of alternative developmental pathways in a butterfly
Sammanfattning : 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. LÄS MER
5. The evolution of territoriality in butterflies
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