Fig. 3

Circadian opsin expression patterns of workers. a,b,c: Relative mRNA expression levels of ultraviolet (UVop; a), blue (BLop; b) and green (Lop1; c) opsin genes in the compound eyes of 14-day old workers at six different circadian time points (CT2-CT22). Expression level for each opsin gene was normalized to the reference gene Rp49 and the lowest expression level was set to one. Expression levels were highest shortly after the expected light onset (CT2-CT6) and lowest in the middle of the expected night (CT18). d: Expression data of Lop1 compiled from earlier studies for comparison (asterisk: [26], black dots: [27]). Error bars indicate standard deviation