About the Authors

Susan J. Cunningham

Contributed equally to this work with: Susan J. Cunningham, Jeremy R. Corfield

Affiliations Percy FitzPatrick Institute, DST/NRF Centre of Excellence, University of Cape Town, Rondebosch, South Africa, Institute of Natural Resources, Massey University, Palmerston North, New Zealand

Jeremy R. Corfield

Contributed equally to this work with: Susan J. Cunningham, Jeremy R. Corfield

jr.corfield@gmail.com

Affiliations Department of Neuroscience, University of Lethbridge, Lethbridge, Alberta, Canada, School of Biological Sciences, University of Auckland, Auckland, New Zealand

Andrew N. Iwaniuk

Affiliation Department of Neuroscience, University of Lethbridge, Lethbridge, Alberta, Canada

Isabel Castro

Affiliation Institute of Natural Resources, Massey University, Palmerston North, New Zealand

Maurice R. Alley

Affiliation Institute of Veterinary, Animal and Biomedical Sciences, Massey University, Palmerston North, New Zealand

Tim R. Birkhead

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

Stuart Parsons

Affiliation School of Biological Sciences, University of Auckland, Auckland, New Zealand

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: SJC JRC. Performed the experiments: SJC JRC. Analyzed the data: SJC JRC ANI. Contributed reagents/materials/analysis tools: SJC JRC ANI IC MRA TRB SP. Wrote the manuscript: SJC JRC.