Issues
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Cover image
Cover Image
Cover: Morpho butterflies are iconic insects of the Amazonian rainforest. Some Morpho species live in the dense vegetation of the understory (e.g. Morpho amathonte, cover photo) while other species inhabit the open canopy. Le Roy et al. (jeb243867) investigated how the divergent microhabitat specialization influences the evolution of flight performance. Quantification of climbing flight kinematics among closely related butterfly species living in different strata revealed markedly higher climbing ability in canopy species, probably resulting from divergent flight behaviour and morphology. Photo credit: Vincent Debat.
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OUTSIDE JEB
REVIEW
Variations in cost of transport and their ecological consequences: a review
Summary: Varying energy demands for locomotion can lead to an energy allocation trade-off between traits that may influence individual fitness, group function and species communities in different environments.
SHORT COMMUNICATION
Empirical estimation of skin resistance to water loss in amphibians: agar evaluation as a non-resistance model to evaporation
Summary: Agar provides a suitable material to build biophysical models mimicking the evaporative properties of typical amphibians in the absence of an integumental barrier to evaporation, especially at 5% agar concentration.
RESEARCH ARTICLES
A simple method reveals minimum time required to quantify steady-rate metabolism and net cost of transport for human walking
Summary: A simple slope method reveals that 4 min of walking at speeds of 0.50–1.75 m s−1 is the minimum time required to produce an accurate net cost of transport curve.
Effects of thermal acclimation on the proteome of the planarian Crenobia alpina from an alpine freshwater spring
Summary: The proteome of an alpine Crenobia alpina population shows plasticity in response to acclimation to warmer temperatures.
Active exploration of an environment drives the activation of the hippocampus–amygdala complex of domestic chicks
Summary: Active exploration of an environment induces stronger activation of the hippocampus and taeniae of domestic chicks than pure visual, passive exploration from a restricted area.
Electric catfish hearts are not intrinsically immune to electric shocks
Highlighted Article: An ex vivo analysis of the isolated heart of the electric catfish reveals no signs of any electrical immunity.
Hungry or angry? Experimental evidence for the effects of food availability on two measures of stress in developing wild raptor nestlings
Editor's choice: Reduced food availability increases two measures of stress in developing red kite nestlings by a reduced food intake affecting both their nutritional state and their social environment.
Ontogeny can provide insight into the roles of natural and sexual selection in cricket cuticular hydrocarbon evolution
Highlighted Article: Development of the cricket cuticular hydrocarbon profile under varying conditions of humidity suggests that compounds that respond to a drying environment might be the same compounds used by males in sexual signalling.
Robotic communication with ants
Highlighted Article: During tandem running, a leading ant teaches a follower the route to a resource. Key features of real tandem runs were successfully reproduced using a gantry as a robotic leader.
Divergence of climbing escape flight performance in Morpho butterflies living in different microhabitats
Summary: Quantification of climbing flight kinematics among closely related butterfly species living in different strata reveals contrasted climbing flight ability, probably resulting from divergent flight behaviour and morphology.
Increased parasite load is associated with reduced metabolic rates and escape responsiveness in pumpkinseed sunfish
Summary: Analysis of metabolic rates and escape responsiveness in pumpkinseed sunfish highlights the importance of considering parasite load when studying the physiological and behavioural performance of wild animal populations.
Cleaner fish are potential super-spreaders
Highlighted Article: Experimental evidence that a dedicated cleaner fish, Labroides dimidiatus, can temporarily transport adult parasites, indicating the potential for parasites to exploit this route as a mechanism for transmission and spread.
Vectored jets power arms-first and tail-first turns differently in brief squid with assistance from fins and keeled arms
Summary: The pulsed jet is the main driver of maneuvers in squid, with jet properties and performance metrics differing according to turn orientation.
CORRECTION
Announcing the 2024 JEB Outstanding Paper Prize shortlist and winner
Every year JEB celebrates early-career researchers through the Outstanding Paper Prize. We recognise the shortlisted ECRS that contributed to 11 remarkable studies published in 2024 and congratulate the winner, Elise Laetz, from University of Groningen. See how else JEB supports and promotes ECRs.
Inside the Intergovernmental Panel on Climate Change with Hans-Otto Pörtner
During the past two decades, Hans-Otto Pörtner has steered climate change policy as a co-Chair of IPCC Working Group II. He tells us about the experience in this Perspective.
Photosynthesis turns symbiotic sea anemone's tentacles toward sun
Snakelocks sea anemones point their tentacles, packed with symbiotic algae, toward the sun so their lodgers can photosynthesize, and now Vengamanaidu Modepalli & colleagues have discovered that photosynthesis by the algae guides their host's tentacles towards the sun.
History of our journals
As our publisher, The Company of Biologists, turns 100 years old, read about JEB’s history and explore the journey of each of our sister journals: Development, Journal of Cell Science, Disease Models & Mechanisms and Biology Open.
