Issues

Summary: This Review discusses the energetic cost of colour change and highlights the effects of this cost on animals that change colour rapidly and slowly and how it can be avoided or lessened.

Summary: Amazonia is now in crisis owing to climate change and other anthropogenic pressures. High temperature is the most critical of the physiological threats to its unique and diverse fish fauna.

Highlighted Article: Validation of a computational method for extracting heart rate in free-ranging cetaceans from high-resolution accelerometer data using a ballistocardiogram.

Highlighted Article: Pseudoscorpions perform an alternating tetrapod gait during forward and backward locomotion, with consistently higher speeds during backward motion, while no fixed leg coupling occurs during upside-down walking.

Summary: Behavioral antipredator response in chameleons is predicted by both the functional capacity to perform these behaviors and the immediate environmental context for that individual.

Highlighted Article: Air-breathing mechanics in Xenopus laevis tadpoles change over development as they transition from bubble-sucking to breaching. Differences in breathing mechanics appear to be primarily a consequence of growth, and despite temporal correlations to changes in respiratory physiology, are not linked to changes in lung morphology.

Summary: High levels of load duration and intensity have the greatest acute effect on the free Achilles tendon volume and stiffness.