Dr Michael Garratt, University of Otago (IMAGE) University of Otago Caption New University of Otago research provides insight into how males influence their mates' health, growth and fertility. Credit University of Otago Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.