Early Oxidative Stress May Prevent a Red Ornament From Signaling Longevity.

ABSTRACT: Harsh early environmental conditions can exert delayed, long-lasting effects on phenotypes, including reproductive traits such as sexual signals. Indeed, adverse early conditions can accelerate development, increasing oxidative stress that may, in turn, impact adult sexual signals. Among signals, colorations produced by red ketocarotenoids seem to depend on mitochondrial functioning. Hence, they could reveal individual cell respiration efficiency. It has been hypothesized that these traits are unfalsifiable "index" signals of condition due to their deep connection to individual metabolism. Since mitochondrial dysfunction is frequently linked to aging, red ketocarotenoid-based ornaments could also be good signals of a critical fitness component: longevity. We tested this red color per longe

SUBMITTER: Romero-Haro AA 

PROVIDER: S-EPMC11617810 | biostudies-literature | 2025 Jan

REPOSITORIES: biostudies-literature