I study how warmer winters, as a consequence of climate change, affect predator-prey interactions and early life-history performance in fish, mainly brown trout (Salmo trutta), Atlantic salmon (Salmo salar) and burbot (Lota lota). My main focus is fish behavior, but I am also interested in physiological stress responses and associated gene expressions. I study both the direct effects of temperature on behavior and physiology, and how egg incubation temperature has subsequent effects on fish performance.
I have also been involved in projects aimed to examine the effects that parasitic larvae of the endangered freshwater pearl mussel (Margaritifera margaritifera) have on brown trout.
Various undergraduate and master courses in ecology, zoology and freshwater biology.
Karl Filipsson; Eva Bergman; Larry Greenberg; Martin Österling; Johan Watz; Ann Erlandsson (2020). Temperature and predator-mediated regulation of plasma cortisol and brain gene expression in juvenile brown trout (Salmo trutta). Frontiers in Zoology 17:25.
Karl Filipsson; Eva Bergman; Martin Österling; Ann Erlandsson; Larry Greenberg; Johan Watz (2019). Effects of temperature and a piscivorous fish on diel winter behaviour of juvenile brown trout (Salmo trutta). Freshwater Biology 64(10): 1797-1805.
Karl Filipsson; Tina Petersson; Johan Höjesjö; John J. Piccolo; Joacim Näslund; Niklas Wengström; E. Martin Österling (2018). Heavy loads of parasitic freshwater pearl mussel (Margaritifera margaritifera L.) larvae impair foraging, activity and dominance performance in juvenile brown trout (Salmo trutta L.). Ecology of Freshwater Fish 27: 70-77.
Karl Filipsson; Jeroen Brijs; Joacim Näslund; Niklas Wengström; Marie Adamsson; Libor Zavorka; E. Martin Österling; Johan Höjesjö (2017). Encystment of parasitic freshwater pearl mussel (Margaritifera margaritifera) larvae coincides with increased metabolic rate and haematocrit in juvenile brown trout (Salmo trutta). Parasitology Research 116: 1353 -1360.