Cover: Like the struts of a bridge, the internal architecture of bone transmits forces generated by the actions of muscles and the interaction between an animal and the world. In the jaw, forces are generated during chewing and are partially determined by the toughness and hardness of foods. Using microcomputed tomography, Terhune et al. (jeb220988) demonstrate that the internal bony architecture of the rabbit jaw (shown here, where warmer colors – reds, oranges – represent thicker bone and cooler colors – blues, purples – indicate thinner bone) varies in relation to dietary resistance and to the timing of eating resistant foods during growth. Photo credit: Claire Terhune.
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The control of metabolic traits by octopamine and tyramine in invertebrates
Summary: The monoamines octopamine and tyramine play a pivotal role in the control of metabolism in invertebrates by regulating both energy intake and energy expenditure.
Relationships between the peak hypoxic ventilatory response and critical O2 tension in larval and adult zebrafish (Danio rerio)
Summary: The relationship between critical O2 tension and peak hypoxic ventilatory response is dependent on life history stage in zebrafish.
Compensatory changes in villus morphology of lactating Mus musculus in response to insufficient dietary protein
Summary: Insufficient dietary protein is linked to changes in enterocyte morphology resulting in increased villus height and absorptive surface in lactating mice; this flexibility may support compensatory protein assimilation through increased production of duodenally localized enzymes.
Whale jaw joint is a shock absorber
Highlighted Article: The TMJ of rorqual whales has an elastic fibrocartilage pad hypothesized to absorb shock during engulfment and aid in closing jaws via elastic recoil.
Phenotypic flexibility of metabolic rate and evaporative water loss does not vary across a climatic gradient in an Afrotropical passerine bird
Summary: Reaction norms for metabolic rate and evaporative water loss in response to thermal acclimation do not vary among populations across a climatic gradient in a subtropical, passerine bird.
Experimental modification of morphology reveals the effects of the zygosphene–zygantrum joint on the range of motion of snake vertebrae
Summary: The zygosphene–zygantrum joint is distinctive and universal in snake vertebrae; experimentally removing these structures revealed that they limit yaw and prevent vertebrae from reaching positions where roll can occur.
Temperature affects susceptibility of intertidal limpets to bird predation
Highlighted Article: Experiments with a live captive predator, a predator mimic and direct measurements of predatory strike force show that body temperature affects susceptibility to bird predation for an intertidal limpet.
When the noise goes on: received sound energy predicts sperm whale responses to both intermittent and continuous navy sonar
Summary: Experimental exposure of sperm whales to continuous and pulsed sonar reveals that total pulse energy predicts cessation of foraging better than pulse amplitude or duty cycle.
Internal architecture of the mandibular condyle of rabbits is related to dietary resistance during growth
Summary: The trabecular structure of the mandibular condyle varies between rabbit groups raised on diets that differ in their mechanical properties and the timing of the introduction of mechanically challenging foods.
Dynamic multimodal interactions in navigating wood ants: what do path details tell us about cue integration?
Summary: Ants show a flexible response to multimodal information depending on the sensori-motor contingencies of the navigation task.
The ghost of temperature past: interactive effects of previous and current thermal conditions on gene expression in Manduca sexta
Summary: Repeated high temperature exposure has diverse consequences for gene expression patterns in two recently diverged populations of Manduca sexta, leading to thermal acclimation or increased stress responses.
Distinct navigation behaviors in Aedes, Anopheles and Culex mosquito larvae
Summary: Investigation of six species of disease vector mosquito larvae showed that each species exhibited strikingly different exploration behaviors. However, species behaved similarly when navigating to preferred cues.
Intraspecific variation in sensitivity to food availability and temperature-induced phenotypic plasticity in the rotifer Keratella cochlearis
Summary: Two neighboring populations of the widespread rotifer Keratella cochlearis exhibit differences in sensitivity to food availability with substantial phenotypic differences between them.
Limb dynamics in agility jumps of beginner and advanced dogs
Summary: Limb dynamics in agility jumps of beginner and advanced dogs reveal general strategies of limb control and highlight differences between levels of skill during landing.
Preferential intracellular pH regulation is a common trait amongst fishes exposed to high environmental CO2
Highlighted Article: Preferential intracellular pH regulation is a common strategy of acid–base regulation in fishes acutely exposed to environmental PCO2 >4 kPa.
The effect of diet change and insulin dysregulation on the faecal microbiome of ponies
Summary: Examination of the faecal microbiome of ponies introduced to pasture reveals that metabolically healthy ponies have greater microbial stability when challenged with this dietary change, compared with ponies with insulin dysregulation.
Meet the JEB Editors @ SEB 2023
Come and meet the JEB team at the Society for Experimental Biology centenary conference from 4-7 July in Edinburgh, UK. Visit exhibition stand 13/15 to pick up JEB centenary goodies, including our new ‘100 years of discovery’ T shirt, and join our Meet the JEB Editors event on Thursday 6 July at 12.30 at Platform 5 to find out more about the journal and chat to Editors including EiC Craig Franklin, Monitoring Editors Sanjay Sane, Trish Schulte and John Terblanche and the in-house News and Reviews team.
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. First deadline for applications is 15 July 2023.
JEB@100: an interview with Monitoring Editor Katie Gilmour
Katie Gilmour tells us how she first encountered the JEB Editorial team as a graduate student at the University of Cambridge, UK, and how she would like to have a Star Trek tricorder to monitor fish non-invasively in the field.
The Forest of Biologists
The Forest of Biologists is a biodiversity initiative created by The Company of Biologists, with support from the Woodland Trust. For every Research and Review article published in Journal of Experimental Biology a native tree is planted in a UK forest. In addition to this we are protecting and restoring ancient woodland and are dedicating these trees to our peer reviewers. Visit our virtual forest to learn more.
Centenary Review - Adaptive echolocation behavior
Cynthia F. Moss and colleagues Review the behaviours used by echolocating mammals to track and intercept moving prey, interrogate dynamic sonar scenes, and exploit visual and passive acoustic stimuli.
Crucial DNA at crux of insect wing size evolution
Keity Farfán-Pira and colleagues have revealed that a tiny region of regulatory DNA in the vestigial gene governs whether insect wings are large or small and has played a key role in the evolution of insect wing size.