Issues
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Cover image
Cover Image
Cover: An Adélie penguin leaps from the water, returning to its colony. Diving marine predators, such as Adélie penguins, perform long-distance foraging trips that are energetically very demanding. Understanding how much energy an individual acquires and expends is essential to understanding life-history strategies. Dupuis et al. (jeb249201) proposed a new framework to estimate foraging energetics of free-ranging Adélie penguins using depth time-series from animal-borne data loggers. Such a framework could likely be applicable to studies of numerous other diving predators and provide significant insights into their foraging energetics. Photo credit: Benjamin Dupuis – French Polar Institute.
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INSIDE JEB
OUTSIDE JEB
COMMENTARY
Climate change and polar marine invertebrates: life-history responses in a warmer, high CO2 world
Summary: Polar marine invertebrates are sensitive to climate change through life-history responses to warming, acidification, sea ice loss and altered productivity. The result may be a loss or replacement of polar biodiversity.
SHORT COMMUNICATION
Directional web strikes are performed by ray spiders in response to airborne prey vibrations
Highlighted Article: Ray spiders use airborne cues for web attacks, unveiling novel insights into the ability of web-building spiders to locate and capture prey.
RESEARCH ARTICLES
The avian vocal system: 3D reconstruction reveals upper vocal tract elongation during head motion
Summary: Tracheal elongation in birds was found to vary between species and is not necessarily homogeneous; this significantly influences vocalization, providing new insights into the complexity of avian communication mechanisms.
Swimming kinematics of rainbow trout behind a 3×5 cylinder array: a computationally driven experimental approach to understanding fish locomotion
Summary: The swimming kinematics of rainbow trout are largely preserved across two, 3×5 cylinder array treatments that differ in vortex periodicity and turbulent kinetic energy.
Innovative use of depth data to estimate energy intake and expenditure in Adélie penguins
Summary: Using machine learning, we estimated energy expenditure and feeding activity of free-ranging Adélie penguins from depth data recorded with biologging devices.
Gut microbiota are involved in leptin-induced thermoregulation in the Mongolian gerbil (Meriones unguiculatus)
Summary: Leptin has a stimulating effect on thermogenesis in Mongolian gerbils and gut mirobiota and TRPV2 may be involved in leptin-induced thermoregulation.
Effects of altered contractile environment on muscle shape change in the human triceps surae
Summary: Altering the mechanical behaviour of surrounding muscles has limited influence on changes in skeletal muscle shape, suggesting a complex relationship between muscle bulging and activation strategies in synergists.
Living in a multi-stressor world: nitrate pollution and thermal stress interact to affect amphibian larvae
Summary: Exposure to nitrate pollution might increase sensitivity to climate change of amphibian larvae by impairing their coping capacity through exhibiting developmental plasticity.
The dual timescales of gait adaptation: initial stability adjustments followed by subsequent energetic cost adjustments
Highlighted Article: The complex dynamics of human gait adaptation highlight rapid stability optimization and gradual adjustments in metabolic rate and step kinetics and kinematics, offering insights into energy-saving mechanisms.
Cuticular hydrocarbons promote desiccation resistance by preventing transpiration in Drosophila melanogaster
Highlighted Article: Cuticular hydrocarbons are demonstrated to be directly responsible for promoting desiccation resistance by reducing the rate of water loss via transpiration in Drosophila melanogaster.
The mayfly Neocloeon triangulifer senses decreasing oxygen availability (PO2) and responds by reducing ion uptake and altering gene expression
Editors' choice: Responses of a mayfly species to reduced oxygen levels suggest they sense decreased oxygen availability and perhaps conserve energy accordingly, even when the rate of oxygen consumption (ṀO2) is not impacted.
ECR SPOTLIGHTS
CORRECTION
Using the reactive scope model to redefine social stress in fishes

In their Review, Katie Gilmour and colleagues redefine the ambiguous concept of social stress by using the reactive scope model as a framework to explain the divergent physiological phenotypes of dominant and subordinate fishes.
JEB grants to support junior faculty

Learn about the grants that we launched in 2023 to support junior faculty from two of our awardees: Erin Leonard, Early-Career Researcher (ECR) Visiting Fellowship recipient, and Pauline Fleischmann, Research Partnership Kickstart Travel Grant recipient. The next deadline to apply is 6 June 2025.
Thirteen-lined ground squirrels survive extraordinarily low blood oxygen

Brynne Duffy and colleagues reveal that thirteen-lined ground squirrels are true hypoxia champions surviving extreme low blood oxygen, down to just 34% oxygen, when they emerge briefly from hibernation.
The Company of Biologists Workshops

For the last 15 years, our publisher, The Company of Biologists, has provided an apt environment to inspire biology and support biologists through our Workshops series. Read about the evolution of the Workshop series and revisit JEB's experience with hosting the first Global South Workshop.
Fast & Fair peer review

Our sister journal Biology Open has recently launched the next phase of their Fast & Fair peer review initiative: offering high-quality peer review within 7 working days. To learn more about BiO’s progress and future plans, read the Editorial by Daniel Gorelick, or visit the Fast & Fair peer review page.