Figure 1. Lifespan extension in
jhdm-1 mutants does not affect pumping rate, but long-lived populations stop pumping at a younger age:(A, B) Representative lifespan of
jhdm-1(
ok2364) mutants (blue) and generation-matched wild-type animals (gray) in early-gen (A, C, E) and late-gen populations (B, D, F). Lifespan was assessed for 3-4 independent transgenerational replicates, with one representative replicate shown here. (A) In early-gen F8 populations,
jhdm-1 mutants are not long-lived. (B) In late-gen F13 populations, the median lifespan of
jhdm-1 mutants was 5.26% longer than generation matched wild-type *p<0.05 with a long-rank test. (C, D) Pharyngeal pumping rate of
jhdm-1 mutants (blue) in both early-gen (C) and late-gen (D) populations did not differ from generation matched wild-type animals (gray). Graphs combine data from three independent transgenerational replicates. Median is shown as a black line. (E, F) Percentage of the population pumping in
jhdm-1 mutants (blue) and generation-matched wild-type (gray) across generational time. Graphs combine data from two independent transgenerational replicates. Total N values are shown in white. (E) Throughout adulthood, the percentage of early-gen
jhdm-1 mutants that are pumping does not differ from wild-type. (F) In populations of late-gen
jhdm-1 mutants that have acquired longevity, fewer animals are pumping in middle age (Day 8 of adulthood). *p<0.05 with a Fisher's exact test.