senescence
- Biogeographic history moulds population differentiation in ageing of oxidative status in an amphibian
Summary: Evidence that patterns of ageing in oxidative status could differ substantially among conspecific populations, and that these differences might be an overlooked legacy of past biogeographic processes.
- Immunosenescence and its influence on reproduction in a long-lived vertebrate
Summary: Painted turtles show differences in immune function across age, sex and sampling date, with some evidence of a trade-off between reproductive effort and immune function with age.
- Understanding diversity in oxidative status and oxidative stress: the opportunities and challenges ahead
Summary: This Commentary highlights the distinction between biochemical and biological definitions of oxidative stress, discusses issues to consider when designing experiments to investigate oxidative stress, and proposes the ‘redox signalling hypothesis’ of life history.
- Muscular apoptosis but not oxidative stress increases with old age in a long-lived diver, the Weddell seal
Summary: Muscular apoptosis is not associated with oxidative stress in Weddell seals, suggesting that protection against diving-related increases in ROS generation is maintained into old age in these animals.
- Multiple optic gland signaling pathways implicated in octopus maternal behaviors and death
Editors' Choice: Octopus optic glands employ a multiplex progression of signaling molecules to regulate maternal behaviors.
- Embryonic growth rate affects telomere attrition: an experiment in a wild bird
Highlighted Article: Faster embryonic growth rate, manipulated using incubation temperature, results in shorter telomere length at hatching in a wild bird species, the common tern.
- Effects of flight activity and age on oxidative damage in the honey bee, Apis mellifera
Summary: Honey bee flight induces oxidative damage and reveals a mechanism by which behavior can damage a cell.
- Variation in early-life telomere dynamics in a long-lived bird: links to environmental conditions and survival
Summary: The environment strongly influences early-life telomere attrition, suggesting that telomere dynamics may underlie cohort effects often observed in natural populations and may mechanistically link early-life stress and later-life performance.