In het context of Global warming there is an increasing interest for inter- and intraspecific phenotypic variation along latitude gradients. Such studies typically are limited to life history traits and their thermal plasticity and ignore biotic interactions that may also play a major role in the local persistence of populations. We will study latitudinal variation in life history and other relevant traits and the consequences for biotic interactions and how the latter in turn vary along these gradients and are temperature-dependent. We study two key biotic interactions, those with predators and with parasites, in the common damselfly Ischnura elegans across three latitudes (South Sweden, Belgium and South France) using a combination of field monitoring, field enclosure experiments and laboratory common garden experiments.