Summary: The recent completion of Drosophila connectomes has raised expectations of a mechanistic explanation of brain operation. However, the connectome is not enough, and many types of additional information are required for this task.
Summary: Amphibians rely on water for reproduction; however, very little is known on how amphibians find water bodies. Experiments in Allobates femoralis suggest that frogs use stagnant odor cues to find breeding pools.
Summary: Hyoid muscle contraction and lines of action vary within a swallow in infant pigs, highlighting the complexity of muscle function and neural control involved in this behavior.
Flight training and dietary antioxidants have mixed effects on the oxidative status of multiple tissues in a female migratory songbird
Summary: The antioxidant system of a migratory songbird responds to exercise and diet manipulation, and these changes are tissue specific.
Great power comes at a high (locomotor) cost: the role of muscle fascicle length in the power versus economy performance trade-off
Summary: In addition to fiber type, fascicle length underlies the muscular power versus economy trade-off. Long locomotor muscle fascicles are associated with increases in both power production and cost of transport.
Plasticity of the gastrocnemius elastic system in response to decreased work and power demand during growth
Summary: Restricting jumping during growth reduced jump performance but did not alter elastic energy storage capacity at adulthood in an avian model.
Mitochondrial capacity and reactive oxygen species production during hypoxia and reoxygenation in the ocean quahog, Arctica islandica
Summary: Mitochondria of Arctica islandica are robust against hypoxic events, but sensitive to reoxygenation, which may indicate adaptation to unpredictable oxygen fluctuations and their burrowing lifestyle.
Summary: Feeding induces increases in liver mitochondrial respiratory rates without compromising mitochondrial redox balance in Boa constrictor snakes.
Highlighted Article: California sea lions engage in task-specific active touch sensing with their whiskers to discriminate size and differentiate textures, indicating that their whiskers are truly an active sensory system.
Summary: Global sampling of comb jellies reveals distinct fatty acid compositions in cold versus deep habitats, suggesting that high hydrostatic pressure requires specialized adaptation of lipid membranes.
Swimming kinematics and performance of spinal transected lampreys with different levels of axon regeneration
Summary: Lampreys that have recovered from having their spinal cords transected do not fully regain swimming abilities and are not able to swim as efficiently as non-transected lampreys.
Highlighted Article: An evolutionarily conserved set of proteins is essential for muscle atrophy in the Drosophila and Manduca insect models.
Highlighted article: Diet impacts thermal performance traits in a temperate marine teleost fish, opaleye (Girella nigricans). Generalist ectotherms that can choose their diet may be able to regulate their performance at different environmental temperatures.
Kinematics and hydrodynamics analyses of swimming penguins: wing bending improves propulsion performance
Highlighted article: A hydrodynamic analysis based on the measured 3D kinematics of penguins during forward swimming shows that bending deformation of the wings can improve propulsion performance.
Summary: Sunfish are capable of activating muscle volumes for suction feeding that are on par with most fast-starts, explosive escape maneuvers known to completely activate the muscle.