A. HP1b mutant animals survive significantly longer during starvation condition than yw control animals (p = 1.022e-13 and p = 7.188e-06 for HP1b16 and HP1b86, respectively, Kruskal-Wallis rank sum test). B. HP1b mutant animals survive significantly longer after exposure to the oxidizer paraquat than yw control animals (p = 3.057e-13 and p < 2.2e-16, for HP1b16 and HP1b86, respectively, Kruskal-Wallis rank sum test). C. HP1b mutant animals do not show improved survival during heat stress conditions (37°C) compared to yw control animals. In contrast, they show lower survival (p = 0.04158 and p = 1.874e-09, for HP1b16 and HP1b86, respectively, Kruskal-Wallis rank sum test).