Mean longevity (days) of G0 <i>A. ervi</i> individuals surviving the heat stress.

<p>This figure represents the mean longevity (± SEM) of G0 <i>A. ervi</i> males and females that survived the heat stress (25°C or 28°C), compared to individuals placed in the 20°C control treatment. Since the duration of the stress (1 h or 48 h) had no significant effect on longevity, data were pooled (cf. text for details). All parasitoids were fed <i>ad libitum</i> until death. The number of tested males (black bars) and females (grey bars) is written at the base of each bar.