C-The relative level of Atg7 RNA in the brain of Canton S male flies, held in LD 12:12 or in DD and in per01 mutants in LD 12:12 (mean RQ +/- SE). The Atg7 RNA cycles in the brain of Canton S in LD 12:12. The highest level was detected 4 h before the end of the night (ZT20) and at the beginning of the day (ZT1) [Kruskal-Wallis test: H (5, N = 31) = 23,07912 p =, 0003, post hoc multiple comparison test: * < 0.05; ** < 0.01]. 