The effect of anxiety on gait: a threat-of-scream study.

It is known that fear responses to clearly identified threats can inhibit motion, slowing down gait and inducing postural freezing. Nonetheless, it is less clear how anxiety, which emerges during threat anticipation, affects gait parameters. In the present work, we used a threat-of-scream paradigm to study the effects of anxiety on gait.

Ecological consequences of body size reduction under warming.

Body size reduction is a universal response to warming, but its ecological consequences across biological levels, from individuals to ecosystems, remain poorly understood. Most biological processes scale with body size, and warming-induced changes in body size can therefore have important ecological consequences. To understand these consequences, we propose a unifying, hierarchical framework for the ecological impacts of intraspecific body size reductions due to thermal plasticity that explicitly builds on three key pathways: morphological constraints, bioenergetic constraints and surface-to-volume ratio.

Distinct impacts of feeding frequency and warming on life history traits affect population fitness in vertebrate ectotherms.

Body size shifts in ectotherms are mostly attributed to the Temperature Size Rule (TSR) stating that warming speeds up initial growth rate but leads to smaller size when food does not limit growth. Investigating the links between temperature, growth, and life history traits is key to understand the adaptive value of TSR, which might be context dependent. In particular, global warming can affect food quantity or quality which is another major driver of growth, fecundity, and survival.