Summary: The nervous system does not simply endure hibernation; instead, it actively promotes and supports this complex physiological process.
METHODS & TECHNIQUES
Summary: Demonstration of the use of calibrated computed tomography to accurately quantify the three-dimensional centre of mass and moments of inertia of birds of prey.
Revealing sound-induced motion patterns in fish hearing structures in 4D: a standing wave tube-like setup designed for high-resolution time-resolved tomography
Summary: To characterize the sound-induced motion of fish auditory structures in 4D, we developed a tomography-compatible standing wave tube-like setup and thereby demonstrated the previously hypothesized rotational motion of otophysan sagittae.
Summary: The energetic burden of Lepeophtheirus salmonis lice infections of different life-stages and intensities in young Atlantic salmon assessed with an aerobic scope framework.
Tissue- and substrate-dependent mitochondrial responses to acute hypoxia–reoxygenation stress in a marine bivalve (Crassostrea gigas)
Summary: Oyster mitochondria show tissue-specific substrate preferences with low propensity for reverse electron transport. Hypoxia–reoxygenation stress suppresses mitochondrial oxidation capacity for NADH-linked substrates but enhances succinate oxidation, thus supporting post-hypoxic recovery.
Highlighted Article: Wing damage in house flies progresses according to a logistic function, albeit with large inter-individual differences; animals can still fly with two-thirds of wing area remaining.
Climbing parrots achieve pitch stability using forces and free moments produced by axial–appendicular couples
Highlighted Article: Parrots ascend primarily by pulling upward from an overhead branch using the beak and feet, while resisting the gravitational pitching moment with horizontal force couples of the beak, feet and tail.
Summary:In vivo labeling experiments demonstrate that a population of myoblasts continues proliferating, and muscle hypertrophy but not hyperplasia is inhibited under growth adverse conditions in the teleost Odontesthes bonariensis.
The relationship between head shape, head musculature and bite force in caecilians (Amphibia: Gymnophiona)
Summary: Feeding mechanics in caecilians is complex. No relationships between bite force and skull shape were detected, but our results do suggest variation in how caecilians use their jaw-closing muscles.
Enhanced resistance to Ca2+-induced mitochondrial permeability transition in the long-lived red-footed tortoise Chelonoidis carbonaria
Summary: Mitochondrial properties of red-footed tortoises may underlie their slower senescence rates and increased lifespan.
Summary: Sound detection is complex in crustaceans and a multitude of sensory receptors are likely to be involved.
Different patterns of chronic hypoxia lead to hierarchical adaptive mechanisms in goldfish metabolism
Summary: In goldfish, constant hypoxia leads to greater benefits in swimming performance in normoxia. Frequency of exposure to environmental hypoxia could be a key driver of mitochondrial metabolic adjustments.
Nutritional symbionts enhance structural defence against predation and fungal infection in a grain pest beetle
Summary: Nutritional bacterial symbionts of the saw-toothed grain beetle Oryzaephilus surinamensis enhance host cuticle formation, conferring protection against predation and fungal infection.