Cover: A passion vine butterfly, Heliconius erato petiverana, feeding on a flower (left). These butterflies have sexually monomorphic wing colors and use color vision to forage and choose mates. Despite the importance of colorful objects to Heliconius, key features of their color vision have remained uncharacterized. McCulloch et al. (pp. 2377-2387) unexpectedly found that adult females have two kinds of UV photoreceptor (bottom right: green, magenta) while males only have one (top right: magenta), and both sexes have a red-sensitive photoreceptor. This eye dimorphism suggests sexspecific selection for color detection in the ultraviolet. Photo credit: Harry Hull, III and Kyle J. McCulloch.
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Preferential intracellular pH regulation: hypotheses and perspectives
Summary: Preferential intracellular pH regulation confers exceptional tolerance to a severe acute respiratory acidosis. This trait may represent a basal pattern of acid–base regulation used by developing vertebrates that is lost or retained in adults.
Amphibious fishes: evolution and phenotypic plasticity
Summary: We review the use of phenotypic plasticity by amphibious fishes and ask whether studying plasticity in extant fishes can provide insight into evolutionary changes during the tetrapod invasion of land.
The high cost of reproduction in sea otters necessitates unique physiological adaptations
Highlighted Article: Female sea otters must manage high pup rearing costs on top of exceptional baseline energy demands; to accomplish this task, they exhibit distinct metabolic changes during key reproductive stages.
Repair of traumatized mammalian hair cells via sea anemone repair proteins
Highlighted Article: Specific proteins secreted by sea anemones following trauma of hair cells on their tentacles assist in the recovery of traumatized hair cells of the murine cochlea.
METHODS & TECHNIQUES
Separating underwater ambient noise from flow noise recorded on stereo acoustic tags attached to marine mammals
Summary: A method is presented that allows users of sound recording tags attached to marine mammals to measure flow noise and ambient noise separately.
The rebound of the body during uphill and downhill running at different speeds
Summary: When running uphill or downhill, the bouncing mechanism of running progressively disappears with slope and speed to contain the increase in muscular power necessary to overcome the slope.
The influence of dissolved organic matter (DOM) on sodium regulation and nitrogenous waste excretion in the zebrafish (Danio rerio)
Summary: Dissolved organic materials, ubiquitous but often overlooked components of natural waters, have profound effects on the ionoregulatory physiology of zebrafish, effects that depend on properties of these heterogeneous substances.
Ammonia excretion in mytilid mussels is facilitated by ciliary beating
Highlighted Article: The plicate organ of mytilid mussels is a main site for ammonia excretion, which is facilitated by Rh channels and ciliary beating.
Intermuscular pressure between synergistic muscles correlates with muscle force
Summary: The intermuscular pressure between synergistic muscles correlates with muscle force.
Regional variability in diving physiology and behavior in a widely distributed air-breathing marine predator, the South American sea lion (Otaria byronia)
Summary: Regional variation in diving ability and behavior of the South American sea lion suggests that exposure to different habitats and geographical locations better explains oxygen storage capacities and diving capability than body size alone.
A subset of neurons controls the permeability of the peritrophic matrix and midgut structure in Drosophila adults
Summary: Neuronal activity of a subset of neurons is required to maintain the organized proventricular structure and physical barriers of the peritrophic matrix and epithelia in Drosophila gut.
Reduced L-type Ca2+ current and compromised excitability induce loss of skeletal muscle function during acute cooling in locust
Summary: Cooling-induced dysfunction of locust skeletal muscle reflects compromised muscle excitability that arises from reduced L-type Ca2+current.
Parental thermal environment alters offspring sex ratio and fitness in an oviparous lizard
Summary: The thermal environment experienced by parents influences the phenotype of their offspring.
Arginine and proline applied as food additives stimulate high freeze tolerance in larvae of Drosophila melanogaster
Highlighted Article: Development of a laboratory technique that secures high survival of the tropical fly Drosophila melanogaster when most of its body water is frozen.
Reproductive consequences of female size in haematophagous ectoparasites
Summary: Maternal size does not affect the number and size of eggs and new imagoes in fleas.
Sexual dimorphism in the compound eye of Heliconius erato: a nymphalid butterfly with at least five spectral classes of photoreceptor
Summary: Female Heliconius erato butterflies have two UV-sensitive photoreceptors, but males only have one, and both sexes have a red-sensitive photoreceptor.
CCAP and FMRFamide-like peptides accelerate the contraction rate of the antennal accessory pulsatile organs (auxiliary hearts) of mosquitoes
Summary: Three insect neuropeptides accelerate the contraction rate of the antennal hearts of mosquitoes, as well as the velocity of hemolymph in the antennal space.
Disentangling the visual cues used by a jumping spider to locate its microhabitat
Summary: Lyssomanes viridis jumping spiders attend to minimal visual information when localizing host plant species, seeking out a specific level of ambient illumination and possibly leaf brightness, but apparently ignoring leaf shape and color.
P450 aromatase: a key enzyme in the spermatogenesis of the Italian wall lizard, Podarcis sicula
Summary: P450 aromatase is an enzyme that produces 17β-estradiol and plays a key role in the control of spermatogenesis in Podarcis sicula.
Avian thermoregulation in the heat: evaporative cooling capacity in an archetypal desert specialist, Burchell's sandgrouse (Pterocles burchelli)
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.