(Dept. 4) Fish Biology, Fisheries and Aquaculture

In the Department of Fish Biology, Fisheries and Aquaculture we seek to understand the ecological and evolutionary processes that structure populations and communities of freshwater fishes and affect their functions and ecological services. An important part of our work focuses on interactions between natural and anthropogenic factors and their effects on evolution, reproduction, stress, development, growth, behaviour, productivity and recreational quality of fish. Our goal is to create the scientific foundations for the conservation of wild fish populations and for sustainable fisheries management and aquaculture. The methodological approaches include hypothesis-driven laboratory research, mesocosm experimentation, lake manipulation, comparative field studies and theoretical modelling.

Contact persons

Jens Krause

Head of Department
Research group
Mechanisms and Functions of Group-Living

Department members

Selected publications

August 2022
Scientific Reports. - 12(2022), Art. 13960

Identification and characterization of a new family of long satellite DNA, specific of true toads (Anura, Amphibia, Bufonidae)

Katerina Guzmán; Álvaro S. Roco; Matthias Stöck; Adrián Ruiz-García; Enrique García-Muñoz; Mónica Bullejos

This newly discovered family of satellite DNAs is present in 15 examined species of amphibians of the systematic family of True toads (Bufonidae). It is formed by monomers of 807 bp, organized in tandem arrays, and has an AT-content of 57.4 Percent.

July 2022
Nature Communications. - 13(2022), Art. 4092

Equilibrated evolution of the mixed auto-/allopolyploid haplotype-resolved genome of the invasive hexaploid Prussian carp

Heiner Kuhl; Kang Du; Manfred Schartl; Lukáš Kalous; Matthias Stöck; Dunja K. Lamatsch

The Prussian carp or Gibel carp is considered one of the most successful invasive fish species in Europe. Its ability to reproduce asexually gives it a major advantage over competing fish. The authors have for the first time described the complete genome of the Prussian carp.This also provides a much better understanding of its unusual reproductive method and to improve its management. 

July 2022
Proceedings of the Royal Society of London : Ser. B, Biological Sciences. - 289(2022)1977, Art. 20220393

Evolution of toxins as a public good in phytoplankton

Elias Ehrlich; Uffe Høgsbro Thygesen; Thomas Kiørboe

The authors studied, with an individual-based phytoplankton model, how toxins can evolve and how intraspecific variation of toxicity can be maintained in toxic phytoplankton blooms. They found that small-scale spatial heterogeneity generated by binary division of phytoplankton cells can explain the evolution of toxins as a public good and the coexistence of toxic and non-toxic genotypes.

May 2022
Reviews in Fish Biology and Fisheries. - 32(2022), 687–700

Recreational angling and spearfishing on social media: insights on harvesting patterns, social engagement and sentiments related to the distributional range shift of a marine invasive species

Valerio Sbragaglia; Lucía Espasandín; Salvatore Coco; Alberto Felici; Ricardo A. Correia; Marta Coll; Robert Arlinghaus

The authors compared ecological and social dimensions of recreational angling and spearfishing targeting the invasive bluefish (Pomatomus saltatrix) in Italy using digital videos and their associated data. The study showcases the value of exploring social media to understand the ecological and human dimensions of marine recreational fisheries in relation to distributional range shifts of species.

March 2022
The American Naturalist. - 199(2022)4, 480-495

Evolutionary impact of size-selective harvesting on shoaling behavior: individual-level mechanisms and possible consequences for natural and fishing mortality

Valerio Sbragaglia; Pascal P. Klamser; Pawel Romanczuk; Robert Arlinghaus

The authors present a multigeneration harvest selection experiment with zebrafish as a model to understand the effects of size-selective harvesting on shoaling behavior. Using high-resolution tracking of fish behavior with computational agent-based modeling, they show that shoal cohesion changed in the direction expected by a trade-off between individual vigilance and the use of social cues. 

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