Sökning: "mating asymmetries"

Hittade 2 avhandlingar innehållade orden mating asymmetries.

1. 1. Effects of Post-Glacial Range Expansions and Population Bottlenecks on Species Richness

   Författare :Anders Ödeen; Godfrey Hewitt; Uppsala universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Developmental biology; Peripatric speciation; bottlenecks; mating asymmetries; Kaneshiro model; Quaternary ice-ages; phylogeny; Motacilla; Motacilla flava; Utvecklingsbiologi; Developmental biology; Utvecklingsbiologi; Animal Ecology; zooekologi;

   Sammanfattning : This thesis relates modern speciation theory to the effects of sudden changes in the range and size of populations. Special reference is made to the climatic oscillations during the Quaternary ice ages. LÄS MER

3. 2. 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