Fig. 5.

Diurnal parameters of food intake. A. Power, a measure of the strength of the rhythm. B. Onset of food intake. C. Acrophase or peak of feeding rhythm. Zeitgeber Time (ZT) of 0 represents the time of lights on (6AM) and ZT 12 represents lights off (6PM) during a 24-hour day. Results of the 3-way ANOVA for all groups (horizontal line above spanning all groups), and of 2-way ANOVAs for gonad-intact alone or GDX alone (horizontal lines above spanning only each conditions), indicate significant effects (when present) of G (gonadal status, intact vs. GDX), S (gonadal sex, female vs. male), or C (sex chromosome complement, XX vs. XY). Significant interactions are shown as GxS, GxC, SxC, or GxSxC, * p<0.05, ** p<0.01, *** p<0.001, † p<0.0001, ‡ p<0.00001