Fighting female fruit flies (VIDEO) Howard Hughes Medical Institute This video is under embargo. Please login to access this video. Caption Fighting female fruit flies, like the ones shown in this video, are helping researchers understand why we stay angry. Fruit flies, like humans, experience states of persistent aggression. In the case of female fruit flies, this behavior is a survival mechanism, causing the flies to headbutt, shove, and fence other female fruit flies to guard prime egg-laying territory on a ripe banana. Now, by studying these fighting flies, researchers at Janelia and the California Institute of Technology are homing in on the neurons, circuits, and mechanisms responsible for this tenacious behavior. Credit Rubin Lab/HHMI Janelia Research Campus Usage Restrictions Please credit Rubin Lab/HHMI Janelia Research Campus License Original 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.