Summary: Estimation of bottlenose dolphin swimming effort using a physics-based energetics model shows dolphins moderate propulsive efficiency through speed and depth regulation, dependent on task effort requirements.
Activity-dependent decline and recovery of synaptic transmission in central parts of surviving primary afferents after their peripheral cut in crayfish
Summary: The present study demonstrates the role of activity dependency in maintaining or reactivating spike conduction and synaptic machineries after a long period of inactivity (>6 months) in sensory axons deprived of their nucleus.
Univariate and multivariate plasticity in response to incubation temperature in an Australian lizard
Summary: Investigation of multivariate plasticity in response to variation in incubation temperature demonstrates that hot and cool incubation temperatures impact different types of traits, and that there appears to be little evidence that covariation among traits affects phenotypic plasticity.
Metabolic rate and climate change across latitudes: evidence of mass-dependent responses in aquatic amphipods
Summary: A marginal temperature increase of 1.2°C under future climate change would have particularly profound effects on the physiology and ecology of larger individuals at lower latitudes.
Communal nesting is the optimal strategy for heat conservation in a social marsupial: lessons from biophysical models
Summary: A simple biophysical model shows that nest building and huddling represent the optimal strategies for energy savings in a cold-adapted marsupial.
Contributions from both the brain and the vascular network guide behavior in the colonial tunicate Botryllus schlosseri
Highlighted Article: In the colonial tunicate Botryllus schlosseri, both the nervous systems of zooids and the excitable vasculature contribute to generating behavior. Both tissues produce patterned output and both express voltage-dependent Na+ and Ca2+ ion channels.
A tale of two fish tails: does a forked tail really perform better than a truncate tail when cruising?
Summary: Contrary to current assumptions, the flexible forked tail of fishes is not comparably more efficient and does not perform better than flat, truncate tails at cruising swimming speeds.
Sticky, stickier and stickiest – a comparison of adhesive performance in clingfish, lumpsuckers and snailfish
Summary: The adhesive capabilities of clingfish, lumpsucker and snailfish suction discs are correlated with the intensity and variability of flow regimes in the fishes' respective habitats.
The persistent effects of corticosterone administration during lactation on the physiology of maternal and offspring mitochondria
Summary: Corticosterone exposure during lactation in reproducing female mice has potential beneficial effects on offspring mitochondrial function and oxidative stress in adulthood.
Effect of active shortening and stretching on the rate of force re-development in rabbit psoas muscle fibres
Summary: Cross-bridge cycling kinetics is a potential mechanism leading to the force depression but not force enhancement properties observed at steady-state following active shortening and stretching in skeletal muscle, respectively.
Escape response kinematics in two species of tropical shark: short escape latencies and high turning performance
Summary: Tropical reef shark neonates show high manoeuvrability and short reaction times during antipredator escape responses compared with expectations based on previous work on teleost fishes and sharks.
Thermal sensitivities of respiration and protein synthesis differ among larval families of the Pacific oyster, Crassostrea gigas
Summary: A series of crosses identify standing genetic variation for thermal sensitivity of respiration and protein synthesis among larval families within a species, conferring physiological resilience to environmental change.