Cover: A gyrfalcon during an aerial chase. Brighton et al. (jeb238493) used GPS trackers to record the intercept flight trajectories of captive-bred gyrfalcons. Computer modelling revealed that these naive gyrfalcons, which had never previously hunted, followed the same proportional navigation guidance law as peregrine falcons, but with a lower navigation constant that promotes tail-chasing rather than efficient interception. Photo credit: International Wildlife Consultants UK Ltd.
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Are mitochondria the main contributor of reactive oxygen species in cells?
Summary: This Commentary addresses whether mitochondria are the main source of cellular ROS. We argue that they are a significant site, but not necessarily the main source of cellular ROS under most conditions.
Thirst and drinking in North American watersnakes (Nerodia spp.)
Summary: Relatively small levels of dehydration elicit drinking of fresh water in three species of North American watersnakes, including a semi-marine species in which moderate, progressive dehydration is also shown to inhibit feeding.
METHODS & TECHNIQUES
Rhythmic auditory stimuli modulate movement recovery in response to perturbation during locomotion
Summary: A new method for the evaluation of intrinsic resilience during unsteady locomotion in humans and animals, analysing the relationship between the structure of movement variability and resilience.
Plasticity in parental effects confers rapid larval thermal tolerance in the estuarine anemone Nematostella vectensis
Summary:Nematostella vectensis quickly responds to changes in temperature to modulate parental effects that influence thermal tolerance of larvae in a reversible (plastic) manner, which could be significant for survival under global climate change.
Pendulum-based measurements reveal impact dynamics at the scale of a trap-jaw ant
Summary: A stiffer target and shorter contact duration increase energy transfer during trap-jaw ant mandible strikes measured with micro-impact pendulums.
Comparative cranial biomechanics in two lizard species: impact of variation in cranial design
Summary:In vivo measurements and computer-based simulations of the cranial mechanics of two large lizards indicate that similar mechanical behaviour is shared by lizards with distinct cranial architecture, and show the importance of the postorbital bar in resisting the feeding loads.
The Murphy number: how pitch moment of inertia dictates quadrupedal walking and running energetics
Summary: Work-based optimization predicts that mammalian gait choice emerges from managing the energetic trade-off of pitching versus translating the body.
Feel the light: sight-independent negative phototactic response in octopus arms
Highlighted Article: An extraocular photoreception mechanism in the octopus arm displays negative phototactic responses.
Early developmental stages of native populations of Ciona intestinalis under increased temperature are affected by local habitat history
Summary: Anthropogenic stressors can shape early developmental stages of Ciona intestinalis, increasing their resilience to predicted future heatwave scenarios when compared with control populations from undisturbed locations.
Masticatory system integration in a commensal canid: interrelationships between bones, muscles and bite force in the red fox
Summary: Strong interrelationships between the components of the masticatory system in red foxes suggest that it is strongly integrated, but not more so than for dogs. Yet, the components of the masticatory system are less variable in foxes than in dogs.
Testing the influence of crushing surface variation on seed-cracking performance among beak morphs of the African seedcracker Pyrenestes ostrinus
Summary: Experiments using tools that approximate the crushing surfaces of Pyrenestes ostrinus beak morphs show that variation in width and surface morphology has no significant effect on the efficiency of cracking seeds of variable hardness.
Attack behaviour in naive gyrfalcons is modelled by the same guidance law as in peregrine falcons, but at a lower guidance gain
Highlighted Article: Naive gyrfalcons attacking aerial targets are modelled by the same proportional navigation guidance law as peregrine falcons, but with a lower navigation constant that promotes tail-chasing rather than efficient interception.
Cutaneous tactile sensitivity before and after tail loss and regeneration in the leopard gecko (Eublepharis macularius)
Summary: Tactile sensitivity of the feet and tail in a species of lizard changes in response to tail loss and regeneration.
Maternal provisioning and fluctuating thermal regimes enhance immune response in a reptile with temperature-dependent sex determination
Summary: Fluctuating temperatures increase immune strength of hatchling snapping turtles over constant temperature regimes, as does greater egg mass. However, there is no support for a sex-by-environment interaction on immune strength.
Intersection of motor volumes predicts the outcome of ambush predation of larval zebrafish
Summary: To survive predation, the volume of space prey can flee must exceed the volume of space predators can reach, providing a generalizable framework to explain predator–prey interactions.
The Forest of Biologists
We are excited to announce the launch of The Forest of Biologists, a new biodiversity initiative created with support from the Woodland Trust, aiming to counteract nature loss and safeguard some of the most critically endangered ecosystems for future generations. For every Research Article and Review/Commentary article that is published in JEB (and our sister journals Development, Journal of Cell Science, Disease Models & Mechanisms and Biology Open), a native tree is planted in a forest in the UK.
Celebrating 100 years of discovery
We are proud to be celebrating 100 years of discovery in Journal of Experimental Biology. Visit our centenary webpage to find out more about how we are marking this historic milestone.
Craig Franklin launches our centenary celebrations
Editor-in-Chief Craig Franklin reflects on 100 years of JEB and looks forward to our centenary celebrations, including a supplementary special issue, a new early-career researcher interview series and the launch of our latest funding initiatives.
Looking back on the first issue of JEB
Journal of Experimental Biology launched in 1923 as The British Journal of Experimental Biology. As we celebrate our centenary, we look back at that first issue and the zoologists publishing their work in the new journal.
Biology Communication Workshop: Engaging the world in the excitement of research
We are delighted to be sponsoring a Biology Communication Workshop for early-career researchers as part of JEB’s centenary celebrations. The workshop focuses on how to effectively communicate your science to other researchers and the public and takes place the day before the CSZ annual meeting, on 14 May 2023. Find out more and apply here.
Mexican fruit flies wave for distraction
Dinesh Rao and colleagues have discovered that Mexican fruit flies vanish in a blur in the eyes of predatory spiders when they wave their wings at the arachnids, buying the flies time to make their escape.