Figure 6.

Populations of flies sleep better with complete food. Sleep profiles for populations of females (A) and males (B) on different food. C, Quantification of total sleep. Both female and male populations of flies slept significantly longer when on standard fly food compared with sucrose during the day, but there was no statistically significant difference during the night. D, Activity while awake. Complete food significantly increased activity levels during daytime wake periods in males, and at night in females. E, Number of sleep episodes. F, Sleep bout length. Females, but not males, had significantly consolidated sleep at night, i.e., fewer but longer sleep episodes. G, Latency. Females fell asleep faster on the complete food than on the sucrose agar food, whereas males exhibited similar latency on both food media. n = 8 groups for all conditions. ZT, Zeitgeber time; F, female; M, male.