About the Authors

Helmut Schmitz
Institut für Zoologie der Universität Bonn, Bonn, Germany

Herbert Bousack
Peter Grünberg Institut, Forschungszentrum Jülich GmbH, Jülich, Germany

Corresponding Author

h.schmitz@uni-bonn.de

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: HB HS. Wrote the paper: HB HS. Retrieved data and information: HB HS. Performed the modelling: HB.