Issues

Summary: We outline practical guidelines for conducting, analysing and reporting escape response experiments in fish with the aim of facilitating study replication, comparative analyses and evidence synthesis.

Summary: A discussion of the origins of ecoimmunology, psychoneuroimmunology and disease ecology, and their current state of integration, highlighting several critical directions that could strengthen their integration into the future.

Summary: Sleep is a familiar, everyday experience that is near ubiquitous in animals. We review sleep across taxa, highlighting the diversity of observed sleep behaviour and insights into sleep physiology and function.

Summary: Many experiments have been undertaken to evaluate the potential for invertebrates to adapt to climate change, but validation of experimental results is proving difficult.

Summary: Aquatic animals have diverse mechanisms for ionic, osmotic and acid–base regulation, with profound evolutionary and environmental implications; this classic research area continues to evolve as JEB celebrates 100 years of discovery.

Summary: Measurement of plasma viscosity in the bumblebee Bombus terrestris using particle tracking microrheology, where viscosity is measured as a function of temperature in a sealed and an open geometry.

Summary: The first test of physiological canalization across two developmental stages of birds shows some metrics of growth are insensitive to environmental variation and that oxidative status might better reflect developmental conditions.

Summary: Life with a compromised MAO enzyme: cavefish as a model for the evolution of brain homeostatasis and fish monoaminergic systems.

Summary: Cavity-nesting eastern bluebirds and house wrens were more likely to reject eggs painted colors unlike their own, demonstrating that these species share similar self-referential color discrimination decision-rules for egg rejection.

Summary: During postural conditions, the stiffness of the ankle in humans is determined primarily by the stiffness of the Achilles tendon, not that of the triceps surae muscles.

Summary: Crassostrea virginica largely rely on plasticity in morphology and physiology to buffer the effects of low salinity; this plasticity does not rely on large persistent changes in gene expression.

Highlighted Article: Muscle contributes to the immune response; however, this participation reduces muscle function and increases mortality from predation. Sharing resources optimizes function, but comes at a cost.

Summary: California sea lion body density and energy expenditure during dives were estimated from high-resolution tags. Mean diving power increased with dive depth and estimated tissue density.

Highlighted Article: A surge in thyroid hormones is a necessary but not sufficient signal for the transition from larval to juvenile ornamentation in the Neotropical cichlids.