Evolutionary ecology of damselflies in edge populations Evolutionary ecology of population differentiation along a latitudinal gradient in damselflies with special emphasis on edge populations. The PhD project will address following questions in the damselfly /Ischnura elegans/: (1) how do larvae and adults differentiate phenotypically along a latitudinal gradient; (2) how is this related to genetic differentiation and (3) how does this affect ecological interactions with conspecifics (sexual selection) and natural enemies (predators and parasites). Practical work will be a combination of (1) monitoring natural field populations, (2) common garden experiments in the laboratory, and (3) genetic analyses.