About the Authors

Ana Pérez-Cembranos

Affiliation Department of Animal Biology, University of Salamanca, Salamanca, Spain

Alicia León

Affiliation Department of Animal Biology, University of Salamanca, Salamanca, Spain

Valentín Pérez-Mellado

valentin@usal.es

Affiliation Department of Animal Biology, University of Salamanca, Salamanca, Spain

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: APC VPM. Performed the experiments: APC AL VPM. Analyzed the data: APC AL VPM. Contributed reagents/materials/analysis tools: APC AL VPM. Wrote the paper: APC AL VPM.