Flirting on the 'Fly' (2 of 2) (VIDEO) Simon Fraser University This video is under embargo. Please login to access this video. To view this video please enable JavaScript, and consider upgrading to a web browser that supports HTML5 video Caption A study led by Simon Fraser University biologist Gerhard Gries found that the photoreceptors in the eyes of blow flies do more than just help them navigate around surrounding environments. They're also used in an elaborate sexual communication system to aid in their quest to find the perfect mate by filtering out incompatible candidates. Credit SFU 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.