Fig. 2

ME flies sleep less at night and move more when awake compared to PC. a-b Mean sleep and standard error by Zeitgeber hour of (a) females and (b) males from ME (white) and PC (gray) populations at 25 °C during 12 h of light and 12 h dark periods, where night time is indicated by the gray shading of the plot. c-d Percentage of total sleep over a 24 h day (left), light period (middle) and night time (right) in ME and PC (c) females and (d) males. PC results are shaded in gray, and asterisks denote statistical significance after Bonferroni correction. Data points for daytime are denoted in circles and nighttime are in squares. e-f Average locomotor activity per minute when awake of (e) females and (f) males of ME and PC populations at 21 °C and 25 °C. Asterisks denote statistical significance after Bonferroni correction