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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News

February 2, 2023 –

Biologists at Eawag have identified ten species of whitefish in the lakes of the Reuss river system. Of these, seven have been described as distinct species for the first time – although in two cases this required inspection of...

Biologists at Eawag have identified ten species of whitefish in the lakes of the Reuss river system. Of these, seven have been described as distinct species for the first time – although in two cases this required inspection of specimens from historical collections, since eutrophication of lakes in the 20th century also led to the extinction of fish species in Central Switzerland.

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October 7, 2022 –

A high fraction of the endemic biodiversity of the Alps is very old. The endemics – species found only in a confined area – have developed over the past millions of years during the cycles of glacial and interglacial periods or...

A high fraction of the endemic biodiversity of the Alps is very old. The endemics – species found only in a confined area – have developed over the past millions of years during the cycles of glacial and interglacial periods or even before these cycles began. Fish, however, are an exception: most endemic fish species emerged only after the end of the last ice age about 15,000 years ago.

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September 1, 2022 –

For a long time professional fishermen have known that there is not just one whitefish species in Switzerland, but a whole range of species each with their own specialization and local name. Researchers have now analysed the...

For a long time professional fishermen have known that there is not just one whitefish species in Switzerland, but a whole range of species each with their own specialization and local name. Researchers have now analysed the entire genome of the various whitefish and shown how specialists have all developed independently of each other in each lake region.

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August 16, 2022 –

Luiz and many colleagues from Eawag, WSL, NMBE and the IEE discuss the relative contribution of immigration, speciation and extinction to the assembly of biodiversity in island-like habitats. They detect biogeographic and genetic...

Luiz and many colleagues from Eawag, WSL, NMBE and the IEE discuss the relative contribution of immigration, speciation and extinction to the assembly of biodiversity in island-like habitats. They detect biogeographic and genetic signatures associated with two mechanisms, namely (i) a glacial species pump where isolation in glacial refugia accelerates allopatric speciation and (ii) adaptive radiation in underused adaptive zones during ice-free periods.

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Seminars

09.05.​2023,
9.00 am
Eawag Dübendorf

PEAK-ZHAW-Vertiefungskurs V56/23

Latest Publication

Stieb, S. M., Cortesi, F., Jardim de Queiroz, L., Carleton, K. L., Seehausen, O., & Marshall, N. J. (2022). Long-wavelength-sensitive (lws) opsin gene expression, foraging and visual communication in coral reef fishes. Molecular Ecology. doi:10.1111/mec.16831, Institutional Repository

Research Projects

Establishing a framework for conservation genomics of freshwater biodiversity
We study the biodiversity of Swiss freshwaters and design data-driven conservation strategies that take climate change and human impacts into account.
In this project we are interested in which traits govern the efficiency of stickleback foraging in different ecological contexts.
This project contributes to the Blue Green Biodiversity Research Initiative