About the Authors

Thomas Endlein

Affiliation Max Planck Institute for Intelligent Systems, Heisenbergstr. 3, 70569 Stuttgart, Germany

Walter Federle


Affiliation University of Cambridge, Department of Zoology, Downing Street, Cambridge, CB2 3EJ, United Kingdom

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

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