Fig. 1

Percentage pupariation as a function of time (in hours) from egg-collection in a LD12:12 and b DD for the early (E), the early-control (EC), the control (C), the late-control (LC) and the late (L) populations. The black and white bars at the bottom represent night and day respectively. c Median egg-to-puparium duration (time taken for 50 % of total pupariation events) of all populations in LD12:12 and DD, and d Percentage egg-to-puparium survivorship values in LD12:12 and DD. Error bars for panels c and d indicate 95 % confidence intervals calculated by method of Tukey’s HSD. Bars sharing same letters do not differ statistically while those with different letters are significantly different from each other