Survival curve of N. furzeri in the FLI facility. Recording of deaths starts at age of 5 wph, which corresponds to sexual maturity, and the colored dashed lines indicate the three age groups analysed in this study (5 animals/group), namely 5 weeks post hatching (wph, young, sexual maturity), 12 wph (adult) and 39 wph (old, past median lifespan) of a wild-derived strain that exhibits a median lifespan of 7-8 months. 