Structural and mechanical properties facilitate shock wave damping by helmet-like orbital hoods in snapping shrimp.

Λεπτομέρειες βιβλιογραφικής εγγραφής
Τίτλος:	Structural and mechanical properties facilitate shock wave damping by helmet-like orbital hoods in snapping shrimp.
Συγγραφείς:	Kazel M; Department of Biomedical Engineering, University of South Carolina, Columbia, SC, USA., Cammack RE; Department of Biological Sciences, University of Tulsa, Tulsa, OK, USA., Kingston ACN; Department of Biological Sciences, University of Tulsa, Tulsa, OK, USA., Alshareef A; Department of Biomedical Engineering, University of South Carolina, Columbia, SC, USA., Shazly T; Department of Biomedical Engineering, University of South Carolina, Columbia, SC, USA., Speiser DI; Department of Biological Sciences, University of South Carolina, Columbia, SC, USA.
Πηγή:	Journal of the Royal Society, Interface [J R Soc Interface] 2026 Feb 11; Vol. 23 (235).
Τύπος έκδοσης:	Journal Article; Research Support, N.I.H., Extramural
Γλώσσα:	English
Στοιχεία περιοδικού:	Publisher: Royal Society Country of Publication: England NLM ID: 101217269 Publication Model: Print Cited Medium: Internet ISSN: 1742-5662 (Electronic) Linking ISSN: 17425662 NLM ISO Abbreviation: J R Soc Interface Subsets: MEDLINE
Imprint Name(s):	Original Publication: London : Royal Society, [2004]-
Ιατρικοί όροι (MeSH):	Decapoda/anatomy & histology , Decapoda/physiology , Animal Shells/anatomy & histology , Animal Shells/physiology , Models, Biological* , High-Energy Shock Waves*, Animals ; Biomechanical Phenomena
Περίληψη:	Snapping shrimp damp the shock waves they produce and use as weapons with a helmet-like structure termed the orbital hood. Here, we ask how structural and material properties contribute to shock wave damping by orbital hoods in Alpheus heterochaelis. Using tensile mechanical testing, we find orbital hoods are approximately half as stiff as carapace and have twice the capacity for viscous energy dissipation. Microstructural features probably contribute to tissue-specific mechanical properties: the endocuticles of orbital hoods have almost twice as many lamellae as those of carapaces despite being half as thick, suggesting a mechanism for enhanced material mobility underlying viscous behaviour. Using material properties from mechanical testing and geometric data from micro-computed tomography, we developed finite element simulations of interactions between shock waves and orbital hoods. These simulations predict orbital hoods reduce shock wave-induced strain and stress in the neural tissues of shrimp by 28% and 22%, respectively. Orbital hoods appear optimized for shock wave damping: simulated increases or decreases in their material properties reduce their protective capabilities. We conclude that structural and viscoelastic properties contribute to shock wave damping by orbital hoods, a promising step towards bio-inspired improvements to contemporary armour systems that currently underperform in preventing blast-induced neurotrauma in humans. (© 2026 The Authors.)
Grant Information:	Human Frontier Science Program; NASA SC Space Grant Consortium Undergraduate Student Research Award; National Heart, Lung, and Blood Institute, National Institutes of Health; The University of Tulsa Faculty Development Summer Fellowship Program; University of South Carolina Magellan Voyager Grant
Contributed Indexing:	Keywords: Bouligand structures; armour; chitin; crustacean; exoskeleton
Molecular Sequence:	figshare ttps://doi.org/10.6084/m9.figshare.c.8230397.
Entry Date(s):	Date Created: 20260210 Date Completed: 20260707 Latest Revision: 20260828
Update Code:	20260828
DOI:	10.1098/rsif.2025.0769
PMID:	41667082
Βάση Δεδομένων:	MEDLINE

Περιγραφή
ISSN:	1742-5662
DOI:	10.1098/rsif.2025.0769