About the Authors

Simone Immler

To whom correspondence should be addressed. E-mail: s.immler@sheffield.ac.uk

Affiliation Department of Animal and Plant Sciences, University of Sheffield, Sheffield, United Kingdom

Harry D.M. Moore

Affiliation Reproductive and Developmental Medicine, University of Sheffield, Sheffield, United Kingdom

William G. Breed

Affiliation Discipline of Anatomical Sciences, School of Medical Sciences, Faculty of Health Sciences, University of Adelaide, South Australia, Australia

Tim R. Birkhead

Affiliation Department of Animal and Plant Sciences, University of Sheffield, Sheffield, United Kingdom

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: SI. Performed the experiments: HM SI. Analyzed the data: SI. Contributed reagents/materials/analysis tools: HM WB. Wrote the paper: TB SI. Other: Supervised the entire project: TB.