Fig. 1

White fluorescent light shortens fly lifespan and decreases mobility. a Adult white (w) flies aged in constant darkness (D:D) have a significantly extended lifespan compared with those aged in white fluorescent light (L:D) (Log-rank test, p < 0.0001). b Average climbing ability was significantly lower in 30-day-old w males kept in L:D versus those kept in D:D (unpaired t test, p = 0.0066). c Canton S (CS) adult flies aged in D:D have a significantly extended lifespan compared with those aged in L:D (Log-rank test, p < 0.0001). d Average climbing ability was lower but not significant in 30-day-old CS males kept in L:D versus those kept in D:D, and significantly lower in 50-day-old CS males kept in L:D versus those kept in D:D (unpaired t test, p = 0.0434). For longevity experiments in (a, c), N = 100 for each genotype and light condition. Numbers above bars indicate the sample size in each light condition. Error bars show standard error of the mean (SEM)