About the Authors
Department of Biosciences, College of Science, Swansea University, Swansea, United Kingdom
The Structure and Motion Laboratory, The Royal Veterinary College, Hatfield, Hertfordshire, United Kingdom
Evolutionary Ecology Group, Department of Zoology, Cambridge University, Cambridge, United Kingdom
The authors have declared that no competing interests exist.
Conceived and designed the experiments: AJK AM. Performed the experiments: AJK DM CJ. Analyzed the data: AJK IF. Contributed reagents/materials/analysis tools: AJK. Wrote the paper: AJK IF AM.