FIGURE 2.

Reproductive performance of males and females following developmental heat stress. Flies developed at 25°C, 27°C or 29°C. Random slopes extracted from random slope models modelling the relationship between the different response variables and the two lowest (25°C and 27°C; panels a, c, e and g), or the two highest (27°C and 29°C; panels b, d, f and h), temperatures were obtained for each DGRP line. Response variables: (a and b) the proportion of vials with DGRP males in which at least one mating was observed within the first 8 h (i.e. mating success), (c and d) the proportion of vials with DGRP males in which at least one larva emerged from eggs (i.e. fertility), (e and f) the number of adult offspring (i.e. productivity) per vial with DGRP males and (g and h) the number of adult offspring (i.e. productivity) per vial with DGRP females. The DGRP lines are ordered according to their slope value, from the highest to the lowest. Colour tones represent different line status (‘high lines’, dark grey, ‘low lines’ light grey), each dot represents an individual line. Red dotted lines mark the intercept = 0