Issues
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Cover image
Cover Image
Cover: Hibernators possess the remarkable ability to weather harsh winter conditions, year after year. For example, the thirteen-lined ground squirrel (Ictidomys tridecemlineatus), pictured here, is a champion of hibernation that can survive without access to food, water or warmth for several months. Junkins et al. (jeb229542) review what is known about the brain's role in coordinating this extreme physiological state. Photo credit: Gracheva laboratory.
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INSIDE JEB
OUTSIDE JEB
EDITORIAL
REVIEW
Towards understanding the neural origins of hibernation
Summary: The nervous system does not simply endure hibernation; instead, it actively promotes and supports this complex physiological process.
METHODS & TECHNIQUES
Quantifying avian inertial properties using calibrated computed tomography
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.
RESEARCH ARTICLES
Energetic costs of ectoparasite infection in Atlantic salmon
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.
Flight activity and age cause wing damage in house flies
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.
The cellular basis of compensatory muscle growth in the teleost Odontesthes bonariensis
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.
Comparative sound detection abilities of four decapod crustaceans
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.
CORRECTIONS
New funding schemes for junior faculty staff
In celebration of our 100th anniversary, JEB has launched two new grants to support junior faculty staff working in animal comparative physiology and biomechanics who are within five years of setting up their first lab/research group. Check out our ECR Visiting Fellowships and Research Partnership Kickstart Travel Grants.
JEB@100: an interview with Monitoring Editor Stuart Egginton
Stuart Egginton reveals how he overcame the challenges of being a comparative physiologist in a medical school and how he would tell his younger self to trust his instincts when pursuing new ideas.
Travelling Fellowships from JEB
Our Travelling Fellowships offer up to £3,000 to graduate students and post-doctoral researchers wishing to make collaborative visits to other laboratories. Next deadline to apply is 27 October 2023
Feedforward and feedback control in the neuromechanics
Auke J. Ijspeert and Monica A. Daley provide an overview of key knowledge gained from comparative vertebrate experiments and insights obtained from neuromechanical simulations and robotic approaches. Read the full Centenary Review Article here.
Light fine-tunes electric fish pulses to keep them in the shade
Weakly electric fish perceive their surroundings through electric chirrups and now Ana Camargo & colleagues have revealed that light fine-tunes the fish's electric pulses to ensure that they remain scheduled beneath the mats of vegetation they use for shelter, avoiding penetrating beams of light that could give them away.
