Figure 4

Analysis of male-male courtship. The courtship index (CI) is the fraction of time spent in courtship activity in the 10-minute observation period. (A) CI of males of the indicated genotypes paired with a decapitated CS target male. (B) Number of copulation attempts. (C) Wing vibration latency in seconds. Mean ± SEM; N ≥ 30 for each genotype and test. Mann Whitney, *P < 0.05; ***P < 0.001.