Issues

Summary: Indigenous scientists working within settler-colonial research institutions experience tensions in addressing ongoing exclusion of their knowledge traditions. We invite settler-scholars to challenge the hidden assumptions of knowledge superiority.

Summary: Microbiomes can influence the thermal tolerance of ectothermic animals; however, many questions remain regarding the role that microbes play in the thermal ecology and evolution of their hosts.

Summary: This Review highlights how biomechanical adaptations in different suboscine species allow them to generate a rich variety of acoustic features in their songs.

Summary: During 14 h air exposure, oxidative stress occurs in the green crab, oxygen consumption is maintained, and ammonia and urea excretion are greatly suppressed, with large increases in all rates during aquatic recovery.

Summary: Complex, ontogenetic differences in temperature-induced responses of the phenome of encapsulated gastropod embryos are underpinned by altered physiology and behaviour, and thermal plasticity in developmental event timings.

Summary: In vivo muscle recordings during walking in obstacle terrain reveal that a proprioceptive deficit is associated with a shift towards ‘strut-like’ isometric muscle function and delayed obstacle recovery in guinea fowl.

Editor's choice: High temperatures reveal differences between two host species in their ability to recover at least parts of their developmental pathways that are typically disrupted by parasitism.

Summary: The effects of temperature variation on biological processes depend on the sex of parents and offspring, increasing the complexity for forecasting environmental impacts.

Summary: The thermal and microbial environment in which a tadpole develops shapes its gut microbiota and neurodevelopment, providing some of the first evidence for a microbiota–gut–brain axis in an amphibian.

Summary: Ex vivo and in vivo experiments indicate an additional vocal repertory in rhesus macaques, in which the ventricular folds co-oscillate with the vocal folds to significantly lower the fundamental frequency.

Highlighted Article: Drosophila larvae ciliated lch1 neurons can regenerate axons following complete axon removal, suggesting the presence of a sensory cilium does not limit the capacity of neurons to respond to axon injury.

Highlighted Article: Muscle and joint behaviour in the lower leg are uncoupled during cross-country skiing at different speeds and inclines; while the muscle–tendon unit undergoes a stretch–shortening cycle during propulsion, fascicles shorten.

Summary: Experiments that exclude the confounding effect of pheromones show that Drosophila remember the location of an optogenetically delivered reward.

Summary: The visual environment of rearing sites used by poison frogs affects tadpole responses to risky visual stimuli in novel contexts.

Summary: Direct measurement of activation and work requirements of lower-limb musculature and whole-body metabolic energy requirements across a wide variety of human hopping conditions to guide biomechanical models of energy expenditure.

Highlighted Article: Plasticity in fragment size determination in leaf-cutting ants is controlled by sensory information provided by both the leg contact with the leaf edge and the lateral bending of the head.