About the Authors

Nikolai W. F. Bode

Affiliation Department of Mathematical Sciences, University of Essex, Colchester, United Kingdom

Johann Delcourt

johann.delcourt@ulg.ac.be

Affiliation Behavioral Biology Unit: Ethology and Animal Psychology, Laboratory of Fish and Amphibian Ethology, Department of Environmental Sciences and Management, Faculty of Sciences, Institute of Zoology, University of Liège, Liège, Belgium

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

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