This thesis explores the evolutionary basis and consequences of female multiple mating (polyandry) using a quantitative genetic approach with fruit flies. Substantial heritable variation in polyandry and female mating behaviour confirms the potential for mating strategies to respond to selection, and a genetic trade-off between early life polyandry and lifespan suggests that the cost of mating may drive the evolution of female lifespan. Male sperm competitiveness was not heritable, suggesting polyandry is not promoted through increased sons' sperm competitiveness. Male pre- and postcopulatory success were not genetically correlated suggesting that increased reproductive success before and after mating may evolve independently.
|Qualification||Doctor of Philosophy|
|Award date||31 Aug 2016|
|Publication status||Unpublished - 2016|