A future food boom rescues the negative effects of early-life adversity on adult lifespan in a small mammal

Proceedings of the Royal Society B Biological Sciences, Journal Year: 2024, Volume and Issue: 291(2021)

Published: April 24, 2024

Early-life adversity, even when transient, can have lasting effects on individual phenotypes and reduce lifespan across species. If these be mitigated by a high-quality later-life environment, then differences in future resources may explain variable resilience to early-life adversity. Using data from over 1000 wild North American red squirrels, we tested the hypothesis that costs of adversity for adult could offset food abundance. We identified six adversities reduced juvenile survival first year life, though only one—birth date—had continued independent lifespan. built weighted (wELA) index integrating sum their effect sizes. Greater predicted shorter lifespans males females, but naturally occurring boom second life ameliorated this effect. Experimental supplementation did not replicate pattern, despite increasing lifespan, indicating buffering hinge more than an increase available calories. Our results suggest non-deterministic role conditions phenotype, highlighting importance evaluating consequences context animal's entire course.

Language: Английский

Sibling similarity in telomere length in Adélie penguin chicks

Comparative Biochemistry and Physiology Part A Molecular & Integrative Physiology, Journal Year: 2025, Volume and Issue: unknown, P. 111818 - 111818

Published: Jan. 1, 2025

Language: Английский