Aggression in Drosophila, Example 3

This extended encounter starts with the male fly on the left approaching a second male and lunging twice in quick succession. The second male turns and retaliates with lunges, which escalates to boxing, tussling, holding, and many more lunges. (Movie kindly provided by Olga Alekseyenko, Kravitz lab, Harvard University.) [Supplemental movie from Drosophila Neurobiology: A Laboratory Manual, Cold Spring Harbor Laboratory Press.]