Issues
INSIDE JEB
REVIEWS
The physiological cost of colour change: evidence, implications and mitigations
Summary: This Review discusses the energetic cost of colour change and highlights the effects of this cost on animals that change colour rapidly and slowly and how it can be avoided or lessened.
Global change and physiological challenges for fish of the Amazon today and in the near future
Summary: Amazonia is now in crisis owing to climate change and other anthropogenic pressures. High temperature is the most critical of the physiological threats to its unique and diverse fish fauna.
METHODS & TECHNIQUES
An accelerometer-derived ballistocardiogram method for detecting heart rate in free-ranging marine mammals
Highlighted Article: Validation of a computational method for extracting heart rate in free-ranging cetaceans from high-resolution accelerometer data using a ballistocardiogram.
RESEARCH ARTICLES
Cockroaches adjust body and appendages to traverse cluttered large obstacles
Summary: Cockroaches make adjustments to better roll into gaps to traverse cluttered large obstacles.
Locomotion in the pseudoscorpion Chelifer cancroides: forward, backward and upside-down walking in an eight-legged arthropod
Highlighted Article: Pseudoscorpions perform an alternating tetrapod gait during forward and backward locomotion, with consistently higher speeds during backward motion, while no fixed leg coupling occurs during upside-down walking.
The functional basis for variable antipredatory behavioral strategies in the chameleon Chamaeleo calyptratus
Summary: Behavioral antipredator response in chameleons is predicted by both the functional capacity to perform these behaviors and the immediate environmental context for that individual.
The mechanics of air breathing in African clawed frog tadpoles, Xenopus laevis (Anura: Pipidae)
Highlighted Article: Air-breathing mechanics in Xenopus laevis tadpoles change over development as they transition from bubble-sucking to breaching. Differences in breathing mechanics appear to be primarily a consequence of growth, and despite temporal correlations to changes in respiratory physiology, are not linked to changes in lung morphology.
The acute effects of higher versus lower load duration and intensity on morphological and mechanical properties of the healthy Achilles tendon: a randomized crossover trial
Summary: High levels of load duration and intensity have the greatest acute effect on the free Achilles tendon volume and stiffness.
CORRECTION
In the field: an interview with Harald Wolf
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In our new Conversation, Harald Wolf talks about his fieldwork experiences working with desert ants in Tunisia to understand their navigation.
Propose a new Workshop
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Our Workshops bring together leading experts and early-career researchers from a range of scientific backgrounds. Applications are now open to propose Workshops for 2024, one of which will be held in a Global South country.
Julian Dow steps down and John Terblanche joins the JEB team
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After 15 years with the journal, Julian Dow from University of Glasgow, UK, is stepping down as a Monitoring Editor. We wish Julian all the best for the future and welcome John Terblanche, Stellenbosch University, South Africa, who is joining the team. Julian talks about his long association with The Company of Biologists and the journal and John tells us about his life and career in this News article.
The capture of crude oil droplets by filter feeders at high and low Reynolds numbers
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Researchers from the University of Montreal, Canada, reveal how tiny filter feeding barnacles and Daphnia entrap and consume minute droplets of crude oil, introducing the pollutant at the bottom of the food chain.
Patterns and processes in amphibious fish
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In their Review, Keegan Lutek, Cassandra Donatelli and Emily Standen discuss the biomechanics and neural control of terrestrial locomotion in amphibious fish. They explore how locomotor mode depends on body shape, physical constraints and phylogeny.