Department Fish Ecology and Evolution

Fish Ecology & Evolution (FishEc)

We study ecology, evolution and biodiversity of fishes and other aquatic organisms. We are interested in the mechanisms that drive the origins, the maintenance and the loss of species, genetic and functional diversity.


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02 March 2021

Invasiveness facilitated by a large gene pool

In Lake Constance, sticklebacks are occupying increasingly varied habitat types – in recent years even including the open and deep waters of the lake. In an Eawag review undertaken as part of the “SeeWandel” project, these uniquely diverse ecological adaptations are explained in terms of renewed contact between three stickleback lineages – including one originating from the Baltic region, whose genetic material is as yet rarely observed in other Swiss lakes. Read more  

December 17, 2020

Downstream passage facilities with signals that are understood by fish

Europe still has barely any downstream passage facilities that guide fish past the turbines of run-of-river power stations unharmed. Now, an interdisciplinary team of engineers from ETH Zurich and fish biologists from Eawag have developed a rack that uses pressure and flow differences to guide fish out of the main flow and into the safe fish passage. Laboratory tests have shown that the system, which works by influencing fish behaviour, is particularly effective for cyprinid fish and salmon parr. Read more

November 18, 2020

Four Eawag researchers among the most-cited scientists

Researchers Juliane Hollender, Ole Seehausen, Bernhard Truffer and Urs von Gunten from the aquatic research institute Eawag are among the "highly cited researchers 2020". Read more

Latest Publication

Zu, P.; Koch, H.; Schwery, O.; Pironon, S.; Phillips, C.; Ondo, I.; Farrell, I. W.; Nes, W. D.; Moore, E.; Wright, G. A.; Farman, D. I.; Stevenson, P. C. (2021) Pollen sterols are associated with phylogeny and environment but not with pollinator guilds, New Phytologist, 230(3), 1169-1184, doi:10.1111/nph.17227, Institutional Repository

Research Projects

We investigate the mechanisms of speciation and adaptive radiation
Genome evolution and genomic divergence across the Swiss Alpine whitefish radiation
Investigating the interactions between migration ecology, local adaptation and diversification