Abteilung Fischökologie & Evolution

Fischökologie & Evolution (FishEc)

Wir arbeiten an Ökologie, Evolution und Biodiversität von aquatischen Organismen, mit Schwerpunkt auf Fischen. Wir erforschen die Mechanismen der Entstehung, der Persistenz und des Verlustes von Biodiversität.

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News

Fachartikel Publikation im PNAS Journal (The Proceedings of the National Academy of Sciences)

spatial and temporal distribution of sampling
10. Juli 2026 –

An diesem Fachartikel mit dem Titel "Divergent population trajectories despite similar response to temperature in a widespread aerial insectivore" haben Ryan Shipley und Cornelia W. Twining mitgearbeitet. Die Arbeit ist nun im...

An diesem Fachartikel mit dem Titel "Divergent population trajectories despite similar response to temperature in a widespread aerial insectivore" haben Ryan Shipley und Cornelia W. Twining mitgearbeitet. Die Arbeit ist nun im PNAS publiziert worden.
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Ole Seehausen wird zum internationalen Ehrenmitglied der AAAS ernannt

8. Mai 2026 –

Wir freuen uns und sind stolz darauf, bekannt geben zu dürfen, dass Ole zum internationalen Ehrenmitglied der American Academy of Arts & Sciences gewählt wurde!

Wir freuen uns und sind stolz darauf, bekannt geben zu dürfen, dass Ole zum internationalen Ehrenmitglied der American Academy of Arts & Sciences gewählt wurde!
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Otto-Jaag-Preis für 2025 doppelt verliehen

Das Abschmelzen der Gletscher verändert die Nahrungsnetze in den Gewässern, wie hier in Grönland, aber auch im alpinen Raum. (Foto: Coralie Moccetti)
13. März 2026 –

Isotopenmarker zum Aufschlüsseln von Nahrungsnetzen und deren Veränderung nutzen sowie Wege und Anreicherung von Schadstoffen in Wasserorganismen verfolgen – gleich für zwei spannende und thematisch sehr aktuelle Doktorarbeiten...

Isotopenmarker zum Aufschlüsseln von Nahrungsnetzen und deren Veränderung nutzen sowie Wege und Anreicherung von Schadstoffen in Wasserorganismen verfolgen – gleich für zwei spannende und thematisch sehr aktuelle Doktorarbeiten wurde 2025 der Otto-Jaag-Gewässerschutzpreis verliehen.
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Obituary for David Alexander Marques (1984 - 2026)

portrait David Alexander Marques (1984 - 2026)
30. Januar 2026 –

It is with immeasurable sadness that we announce that David Marques passed on January 7th at the age of 41 after a long and very courageous battle with cancer. David was a PhD student of Ole, Laurent and Katie Wagner from 2012 to...

It is with immeasurable sadness that we announce that David Marques passed on January 7th at the age of 41 after a long and very courageous battle with cancer. David was a PhD student of Ole, Laurent and Katie Wagner from 2012 to 2016 at IEE and Eawag.
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Weitere News der Abteilung Fischökologie und Evolution >

Eawag News

Stellenangebote

Postdoc in Food-Web Responses to Artificial Flood Restauration in Alpine Rivers

 

Neuste Publikationen

Ahi, E. P., Moustakas-Verho, J., & Singh, P. (2026). Ectodysplasin-A (EDA) signaling cross-talk in skeletogenesis. Calcified Tissue International, 117(1), 37 (28 pp.). doi:10.1007/s00223-026-01502-0, Institutional Repository

Skeletal morphogenesis is a highly complicated interaction cascade of molecular cues, with the Ectodysplasin-A (EDA) pathway emerging as a potentially important contributor to this biological process. This review focuses on the molecular complexity of the EDA pathway’s role in shaping the diverse skeletal architectures observed in vertebrate models studied to date, particularly in fish and mammals. At the molecular level, we first discuss the signaling cascades initiated by EDA and briefly explore its impact on skeletal development. Insights into the transcriptional regulation and downstream effectors activated by EDA provide a greater understanding of its influence on skeletal formation. Beyond its standalone role in skeletogenesis, the review mainly focuses on the dynamic cross-talk between the EDA pathway and other important skeletogenic/morphogenic pathways. The multi-layered interplay with signaling networks, such as BMP, Hedgehog, Wnt, and FGF, highlights the integration of this pathway into broader molecular process governing skeletal morphogenesis. The physiological role of EDA in skeletal tissues appears highly context-dependent, varying with the interacting pathway, cell type, and developmental stage. We explore instances where EDA acts as a conductor, harmonizing its effects with those of other pathways to achieve distinct outcomes in skeletal diversity, and propose a conceptual framework in which EDA integrates these inputs through shared transcriptional hubs, notably NF-κB and NFATc1, in a tissue- and stage-specific manner. By summarizing the interactions of EDA and their associated physiological roles, we provide a comprehensive perspective on the EDA-dependent molecular underpinnings of skeletal diversity, offering new and valuable insights for future research and potential applications in skeletal biology.
Ahi, E. P., Sturmbauer, C., Albertson, R. C., & Singh, P. (2026). Molecular basis of variations in facial soft tissues: insights from cichlid fishes. Developmental Biology, 529, 200-212. doi:10.1016/j.ydbio.2025.10.014, Institutional Repository

The human face serves as a crucial component of attractiveness and identity, playing a pivotal role in social interactions. Teleost fish models, particularly zebrafish, have offered valuable insights into the developmental and molecular mechanisms governing craniofacial skeletogenesis, owing to the molecular conservation in these processes. However, knowledge regarding the morphogenic processes shaping facial soft tissues remains surprisingly sparse. On the human side, most causal evidence comes from gene–phenotype associations in clinical genetics; however, these studies rarely provide cellular-resolution analyses of facial soft tissues, leaving tissue- and cell-type–specific mechanisms unresolved. The diverse family of Cichlidae constitute ∼10 % of teleost fish species and represent an exceptional opportunity for evolutionary biology research due to their extensive ecological diversity and rapid speciation rates. Cichlid fishes also exhibit remarkable craniofacial morphological diversity, making them excellent models for studying both craniofacial skeletal and soft tissue morphogenesis. Utilizing the wealth of natural mutants within cichlid populations, this short review pitches cichlid fish models as valuable tools for investigating the genetic regulators and interactions underlying facial soft tissue formation. At present, most cichlid studies rely on comparative transcriptomics between closely related species with and without pronounced traits; these data are associative, and the regulatory hierarchy and primary drivers remain to be established through functional tests (e.g., genome editing). By synthesising developmental and regulatory mechanisms that influence morphological variations in facial soft tissues in cichlids and other model organisms, we create a blueprint for future molecular genetic investigations into facial diversity. Accordingly, we highlight the need for (i) causative functional studies in cichlids and (ii) cellular-resolution analyses of human facial soft tissues to bridge correlative and mechanistic evidence across systems.

Forschungsprojekte

Wie wird Klimawandel die Phänologie, Biomasse, und Ernährungsqualität ökosystemübergreifender Flüsse verändern ?

Ernährungsphänologie im Zusammenhang mit Klimawandel
Korallenanpassung an zukünftige Klimazonen

Simulation der Reaktion von Korallenarten im roten Meer
Tropical Reef. Credit Conor Waldock
Simulation der Einflüsse von Ausbreitung, Wärmetoleranz und Anpassungsfähigkeit auf die Reaktion tropischer Rifffische auf den Klimawandel.

Simulation der Artenvielfalt tropischer Fische
In dieser grossangelegten Studie untersuchen wir die Auswirkungen des Klimawandels auf die Fischbewegungsmuster im Schweizer Rhein-Aare Flussnetz

Klimawandel und Fischbewegungsmuster

Weitere Forschungsprojekte