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Cover image
Cover Image
Cover: Fan worms (Annelida: Sabellidae) can rapidly withdraw their tentacles, which are covered in heavily ciliated ramifications called pinnules, into their tubes to protect them from approaching threats. Jiang et al. (jeb245731 ) show that, in order to achieve these rapid, forceful movements through seawater without damaging their tentacles, fan worms have developed functional morphological adaptations to reduce fluidic drag, including the flattening of their radiolar pinnules and the deformation of bodily segmental ridges. Photo credit (Sabellastarte sp.): Michael J. Bok.
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INSIDE JEB
OUTSIDE JEB
CONVERSATION
REVIEWS
Adaptive echolocation behavior of bats and toothed whales in dynamic soundscapes
Summary: This Review compares echolocation in bats and toothed whales, with special emphasis on predator–prey interactions and adaptive sonar behaviors used to negotiate complex natural scenes.
Effects of wing damage and moult gaps on vertebrate flight performance
Summary: The flight apparatus (wings, flight muscles, neuro-muscular control) of vertebrates is fine-tuned for efficient flight. I review causes and consequences of wear, damage and moult gaps that temporarily affect wing morphology and flight performance.
SHORT COMMUNICATION
Close encounters of three kinds: impacts of leg, wing and body collisions on flight performance in carpenter bees
Summary: Flying insects frequently collide with obstacles when navigating dense clutter, but the performance consequences of collisions depend on which parts of the insect (e.g. leg, wing, body) are involved.
RESEARCH ARTICLES
Hawkmoths regulate flight torques with their abdomen for yaw control
Summary: Quantitative analysis of flight behavior, modeling and numerical simulation shows that the abdomen of hawkmoths can regulate wing-generated flight torques about the vertical (yaw) axis.
Developmental environment has lasting effects on amphibian post-metamorphic behavior and thermal physiology
Climatic stressors during development have lasting impacts on the thermal physiology, performance and behavior of juvenile frogs post-metamorphosis, with implications for susceptibility to predators and pathogens in subsequent life stages.
Regulation of the swimming kinematics of lampreys Petromyzon marinus across changes in viscosity
Summary: Swimming lampreys largely compensate for changes in viscosity, maintaining similar kinematics over 20× changes in viscosity, suggesting that they use sensory feedback to regulate their body waveform.
Low production of mitochondrial reactive oxygen species after anoxia and reoxygenation in turtle hearts
Low rates of mitochondrial O2·− production are responsible for lack of tissue damage upon reoxygenation after anoxia in turtles, likely owing to low succinate accumulation and low degradation of adenine nucleotides.
Rapid manoeuvre of fan worms (Annelida: Sabellidae) through tubes
To achieve rapid movements through seawater, fan worms have developed functional morphological adaptations to reduce fluidic drag, including the flattening of their pinnules and the deformation of bodily segmental ridges.
Sensorimotor control of swimming Polypterus senegalus is preserved during sensory deprivation conditions across altered environments
Summary: Lateral line and visual systems of Polypterus senegalus are not critical for responding to fluid viscosity but may be involved in a forward model of motor control to adjust locomotion.
Experimental reduction in blood oxygen-carrying capacity alters foraging behaviour in a colonial waterbird
Summary: Experimental reduction of blood oxygen-carrying capacity in incubating black-headed gulls results in fine-scale alterations in foraging behaviour, as birds with induced haemolytic anaemia perform fewer, but longer foraging trips.
ECR SPOTLIGHTS
The Integrative Biology of the Heart
We are pleased to welcome submissions to be considered for our upcoming special issue: The Integrative Biology of the Heart, guest edited by William Joyce and Holly Shiels. This issue will consider the biology of the heart at all levels of organisation, across animal groups and scientific fields.
JEB@100: an interview with Monitoring Editor John Terblanche
John Terblanche reveals how he narrowly avoided becoming a sports scientist and why he thinks phenotypic plasticity is the big question currently facing comparative physiologists. Find out more about the series on our Interviews page.
Vision 2024: Building Bridges in Visual Ecology
Early-career researchers can apply for funded places at our Vision 2024: Building Bridges in Visual Ecology. The event is organised by Eleanor Caves, Sonke Johnsen and Lorain Schweikert and being held at Buxted park 10-13 June 2023. Deadline 1 December 2023.
Reconciling the variability in the biological response of marine invertebrates to climate change
Drawing on work in reef-building corals, Zoe Dellaert and Hollie Putnam provide historical context to some of the long-standing challenges in global change biology that constrain our capacity for eco-evolutionary forecasting, as well as considering unresolved questions and future research approaches. Read the full Centenary Review Article here.
Sipping takes no effort for hovering hawkmoths
Hovering takes the most effort so how much energy does sipping require when hawkmoths hover? Next to nothing, apparently. Alexandre Palaoro & colleagues have discovered that the insects’ proboscises are incredibly wettable, drawing nectar along the length with no effort, giving them a free drink on the wing.
