About the Authors

Daniel Barker

Affiliation School of Animal and Microbial Sciences, University of Reading, United Kingdom

Mark Pagel

Affiliation School of Animal and Microbial Sciences, University of Reading, United Kingdom

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

DB and MP conceived and designed the experiments, performed the experiments, analysed the data, contributed reagents/materials/analysis tools, and wrote the paper.