The pace-of-life syndrome (POLS) hypothesis specifies that closely related species or
populations experiencing different ecological conditions should differ in a suite of metabolic …

Phenotypic development is the result of a complex interplay involving the organism's own
genetic make-up and the environment it experiences during development. The latter …

This introduction to the themed issue on Evolutionary and ecological approaches to the
study of personality provides an overview of conceptual, theoretical and methodological …

The purpose of this review was to integrate leading paradigms in psychology and
neuroscience with a theory of the embodied, situated human brain, called the Hierarchically …

Phenology refers to the periodic appearance of life-cycle events and currently receives
abundant attention as the effects of global change on phenology are so apparent …

Colour polymorphisms (CP's) continue to be of interest to evolutionary biologists because of
their general tractability, importance in studies of selection and potential role in speciation …

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 …

Steroid hormones have similar functions across vertebrates, but circulating concentrations
can vary dramatically among species. We examined the hypothesis that variation in titres of …

Responding appropriately to changing conditions is crucial in dynamic environments.
Individual variation in the flexibility of physiological mediators of phenotype may influence …

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