Human activities have caused a near-ubiquitous and evolutionarily-unprecedented increase
in environmental sound levels and artificial night lighting. These stimuli reorganize …

Baseline glucocorticoid (cort) levels are increasingly employed as physiological indices of
the relative condition or health of individuals and populations. Often, high cort levels are …

Novel or changing environments expose animals to diverse stressors that likely require
coordinated hormonal and behavioral adaptations. Predicted adaptations to urban …

Short-term evolutionary potential depends on the additive genetic variance in the
population. The additive variance is often measured as heritability, the fraction of the total …

In this perspective paper, we emphasize the importance that integrative mechanisms, and
especially the GC (glucocorticoid) stress response, can play in the ability of vertebrates to …

Fluctuations in abiotic and biotic conditions exist in almost all habitats (Dunlap, Loros, &
DeCoursey, 2004; Stevenson et al., 2015). Some fluctuations like the alternation between …

Following the discoveries of telomeres and of their implications in terms of health and
ageing, there has been a growing interest into the study of telomere dynamics in wild …

Behavior of wild vertebrate individuals can vary in response to environmental or social
factors. Such within-individual behavioral variation is often mediated by hormonal …

In vertebrates, stressors such as starvation or predator attacks stimulate the rapid elevation
of circulating glucocorticoid hormones, triggering physiological and behavioral responses …

Twenty years ago, Albert Bennett published a paper in the influential book New directions in
ecological physiology arguing that individual variation was an 'underutilized resource'. In …