Drosophila (image) University of Hawaii at Manoa Share Print E-Mail Caption The decision to mate is influenced by pheromones. Credit Klaus Dreisewerd and Joanne Yew, UHM/ PBRC. Usage Restrictions Image may be used with appropriate caption and credit information. Share Print E-Mail 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.