Summary: The concept of safety factors as a biological ‘design’ principle was first articulated in 1906 in physiology and medicine, foreshadowing the concept's rediscovery in comparative biomechanics and comparative physiology.
Summary: This Review considers constraints in echo- and electro-locating animals such as weakly electric fish, bats and odontocetes, which are subject to signal interference and eavesdropping that compromise information transmission.
Summary: Low temperature stress during pupal development has long-term effects on parental investment and offspring traits, including diapause incidence and viability.
Summary: A novel bouncy gait in sea stars is unlike any known terrestrial gait: it has a Froude number 1000 times lower than locomoting terrestrial vertebrates, but a kinetic and potential energy pattern similar to that seen in running.
Rapid embryonic development supports the early onset of gill functions in two coral reef damselfishes
Summary: Gill development occurs extremely rapidly in coral reef damselfishes. Early embryonic changes suggest that this initiates key ionoregulatory and respiratory functions in preparation for a fast pace of life.
Summary: In bullfrogs, feeding modulates corticosterone, neutrophil/lymphocyte ratio and bacterial killing ability; fasting increases stomach melatonin. This indicates hypothalamic–pituitary–interrenal axis activation in the postprandial period and a possible protective function of melatonin during fasting.
Beyond muscles: role of intramuscular connective tissue elasticity and passive stiffness in octopus arm muscle function
Summary: Intramuscular elastic elements and tensional stress allow for the differential use of arm muscle passive forces during motion in Octopus vulgaris.
Local thermal environment and warming influence supercooling and drive widespread shifts in the metabolome of diapausing Pieris rapae butterflies
Summary: Freeze avoidance is adversely affected by warming in diapausing Pieris rapae butterflies. Metabolomics suggests that this is driven by shifts in the abundance of hundreds of metabolites.
Evoked auditory potentials from African mole-rats and coruros reveal disparity in subterranean rodent hearing
Editor's choice: New data on subterranean rodents elucidate the evolution of poor hearing in mammals living underground.
Summary: Orientation tests in a small migratory songbird provide clear evidence for the efficacy of the magnet approach for temporarily disrupting magnetic compass orientation, but also reveal its limitations in experiments under free-flight conditions.
Neuroligin 1 expression is linked to plasticity of behavioral and neuronal responses to sex pheromone in the male moth Agrotis ipsilon
Summary: Expression and behavioral analyses reveal that overexpression of neuroligin 1 in the antennal lobes is paralleled with age- and odor experience-related increase in sex pheromone responsiveness of male moths.
Highlighted Article: Examination of the effects of long-term dietary β-carotene supplementation and ontogenetic colour change in an aposematic frog found evidence for consistent ontogenetic colour change, but no effect of dietary β-carotene.
Increased cellular detoxification, cytoskeletal activities and protein transport explain physiological stress in a lagoon sponge
Summary: The physiological impacts of climate change on thermally susceptible marine sponges can be elucidated through proteome dynamics.
Highlighted Article: Differences in the mechanics and energetics of walking suggest that children cannot be simply modeled as scaled-down versions of adults.
Prenatal yolk corticosterone exposure promotes skeletal growth and induces oxidative imbalance in yellow-legged gull embryos
Summary: Corticosterone affects prenatal development and oxidative status in yellow-legged gull embryos.