About the Authors

Frauke Hoffmann

f.hoffmann@igb-berlin.de

Affiliation Department of Ecophysiology and Aquaculture, Leibniz-Institute of Freshwater Ecology and Inland Fisheries, Berlin, Germany

Werner Kloas

Affiliation Department of Endocrinology, Institute of Biology, Humboldt-University Berlin, Berlin, Germany

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: FH WK. Performed the experiments: FH. Analyzed the data: FH. Contributed reagents/materials/analysis tools: FH WK. Wrote the paper: FH WK.