About the Authors

Robert Franke

robert.franke@gmx.de

Affiliation Division of Aquaculture and Freshwater Ecology, Department of Animal Sciences, University of Goettingen, Goettingen, Germany

Gabriele Hoerstgen-Schwark

Affiliation Division of Aquaculture and Freshwater Ecology, Department of Animal Sciences, University of Goettingen, Goettingen, Germany

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: RF GHS. Performed the experiments: RF. Analyzed the data: RF GHS. Contributed reagents/materials/analysis tools: RF GHS. Wrote the manuscript: RF.