Fig. 3: Sleep and activity profiles are altered in selected lines.
A Daily activity profile for control and selected fly lines, all lines combined. Shaded areas represent the 95% confidence intervals. N = 40–45 individuals per line. B Sleep duration decreased during the dark cycle for lines selected for resistance (F = 19.291, d.f. = 1,4, P < 0.001). The line within the data points represents the mean. Other aspects of sleep, such as bouts or duration of bouts, are not significantly different between selected and control lines (P > 0.05 in all cases). C Activity is increased during the night for lines selected for resistance (F = 15.98, d.f. = 1,4, P = 0.002). Each point represents the activity of a single fly. The line in the middle represents the mean. D A significant interaction occurs between an independent panel of eight inbred lines with different sleep levels29 and susceptibility to mites (F = 3.021, d.f. = 7,40, P = 0.012). N = 6 for each line was assayed for parasitism.
