Issues

Summary: The two most common methods to estimate the maximum rate of oxygen uptake by fishes give different mean estimates and measures of individual variation. Recognizing that these methods measure different physiological states can enhance their application and interpretation in studies of fish aerobic metabolism.

Summary: This Review summarises the current knowledge on fish sleep behaviour in an ecophysiological context, and suggests future directions for this field in a changing world.

Summary: Baseline physiological and symbiotic community differences between two coral species may underlie differential stress response to a simulated environmentally realistic, extended marine heatwave.

Editors' choice: Gentoo penguins are probably over-insulated during part of the moult when the two feather layers co-occur, which may challenge their thermoregulatory capacity in the context of climate change.

Summary: Praying mantises modulate the kinematics of both forelegs in response to prey distance and angle, but only the changes in relation to prey distance predict prey capture success.

Highlighted Article: In divergent bee species, a metabolic switch regulating cellular methylation reactions is induced by abiotic and biotic stressors, potentially serving as a biomarker of stress and an important mechanism for responding to diverse stressors.

Summary: Tree frogs show diverse techniques when landing on perches of increasing diameters.

Summary: Quantification of kinematic characteristics reveals the unique terrestrial locomotion contributed by gill cover and body undulation in climbing perch.

Summary: Frogs exposed to cooling and dehydration show tissue-specific plasticity of gluconeogenesis in response to different stressors.

Highlighted Article: The use of thermal performance curves to evaluate the sensitivity of the common Pacific coral Pocillopora spp. to rising temperature indicates little variation over 44° of latitude.