Issues
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Cover image
Cover Image
Cover: Danionella cerebrum is one of the smallest known vertebrates. Males perform acoustic communication (bottom), while females lack the sound production anatomy around the anterior swim bladder (middle), made visible by bone and cartilage staining. Groneberg et al. (jeb247782) compare anatomical staining and sound recordings from juvenile to adult fish, revealing that young males (top) start producing sounds during their second month of development, at the time when the sonic bone and cartilage structures have developed. Sounds become louder with maturation but maintain their click-like profile and pulse repetition rates across all ages. Photo credit: Antonia Groneberg, Judkewitz Lab.
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INSIDE JEB
COMMENTARY
Considering ultraviolet radiation in experimental biology: a neglected pervasive stressor
Summary: This Commentary provides a guide to understand if, when and how UVR can be integrated into experimental designs to improve ecological realism.
SHORT COMMUNICATION
Nanoscale ultrastructures increase the visual conspicuousness of signalling traits in obligate cleaner shrimps
Highlighted Article: Cleaner shrimp – tropical crustaceans that remove parasites from reef fish – advertise their cleaning services by waving long, white antennae which contain specialized nanostructures that increase antennae conspicuousness.
RESEARCH ARTICLES
Implications of chronic hypoxia during development in red drum
Summary: Three days of low oxygen early in the life of a marine fish improves performance in normoxic conditions, but limits their ability to respond when re-exposed to low oxygen.
Absence of a functional gut microbiome impairs host amino acid metabolism in the Pacific spiny dogfish (Squalus suckleyi)
Summary: Disrupting the gut microbiome of Pacific spiny dogfish impairs the incorporation of dietary 15N into amino acids, suggesting a critical role for microbes in the unique nitrogen handling strategy of marine elasmobranchs.
Development of sound production in Danionella cerebrum
Highlighted Article:Danionella cerebrum is one of the smallest vertebrates known to perform acoustic communication: juvenile fish develop their sexually dimorphic ability for sound production.
11β-Hydroxysteroid dehydrogenase type 2 may mediate the stress-specific effects of cortisol on brain cell proliferation in adult zebrafish (Danio rerio)
Summary: The steroid dehydrogenase Hsd11b2 is dynamically regulated in the zebrafish brain during stress: variation in Hsd11b2 abundance may underscore stress-specific changes in forebrain neurogenesis.
Joint synergy and muscle activity in the motion of the ankle–foot complex
Summary: A new method to study ankle–foot complex joint synergies and associated muscle function based on joint rotational directions and muscle contraction types.
Identification and in vivo functional analysis of furanocoumarin-responsive cytochrome P450s in a Rutaceae-feeding Papilio butterfly
Summary: In vivo functional analysis using the CRISPR/Cas9 system reveals requirement for cytochrome P450 enzymes in a citrus-feeding swallowtail butterfly for tolerance against toxic compounds in larval host plants.
A multi-peak performance landscape for scale biting in an adaptive radiation of pupfishes
Summary: A new bimodal non-linear biomechanical model that connects morphology to performance to fitness in a sympatric radiation of trophic niche specialists.
Wolbachia-infected pharaoh ant colonies have higher egg production, metabolic rate and worker survival
Highlighted Article: Wolbachia-infected pharaoh ant colonies have higher egg production, metabolic rate and worker survival when compared with uninfected colonies.
Wind gradient exploitation during foraging flights by black skimmers (Rynchops niger)
Summary: Black skimmers can gather energy from the vertical wind gradient to help subsidize the flight cost of their unique feeding behavior.
Spatial resolution and optical sensitivity in the compound eyes of two common European wasps, Vespula germanica and Vespula vulgaris
Summary: Vespula germanica and Vespula vulgaris have eyes of high spatial resolution that are well suited to their ecological needs.
Early life exposure to high temperature enhances locomotor performance without alteration in thermal ecology in different populations of Thoropa taophora tadpoles (Anura, Cycloramphidae)
Summary: The locomotor performance of Thoropa taophora tadpoles varies across different populations in response to environmental temperature.
Regulation of muscle pyruvate dehydrogenase activity and fuel use during exercise in high-altitude deer mice
Summary: High-altitude deer mice increase exercise carbohydrate use with adult hypoxia acclimation by altering pyruvate dehydrogenase regulation.
ECR SPOTLIGHTS
CORRESPONDENCE
The gill oxygen limitation hypothesis remains unsupported by experimental evidence. Response to ‘Testing mechanistic theories must be based on correct interpretations’
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.
