Multi-scale structural design and biomechanics of the pistol shrimp snapper claw

Amini, Shahrouz; Tadayon, Maryam; Chua, Jia Qing Isaiah; Miserez, Ali

doi:10.1016/j.actbio.2018.04.038

Cited by 19 publications

(10 citation statements)

References 34 publications

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“…There is extensive evidence that the crustacean exoskeleton has evolved to withstand forces to which the animals are routinely subjected (Amini et al, 2018; Chen et al, 2008; Meyers et al, 2008; Taylor & Dirks, 2012). One such selective pressure is the bite force of predators.…”

Section: Discussionmentioning

confidence: 99%

Size, but not sex, predicts pinch force and exoskeleton mechanical properties in crayfish of the genus Faxonius

Benson

Clotfelter

2023

Invertebrate Biology

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Studies of animal weaponry and defensive structures rarely take into consideration their underlying mechanical properties. We measured the compressive strength and thickness of the exoskeleton of the claw (chela) in two North American crayfish species, Faxonius virilis and F. limosus. We performed similar measures on the carapace, a body region not directly involved in agonistic contests. Males of both species generated significantly stronger maximum pinch forces than females. However, these differences can be attributed to differences in claw size between the sexes. The thickness (ultrastructure) of the claw exoskeleton was a significant predictor of its compressive strength and likely explained the difference in compressive strength we observed between the two species. Neither claw thickness nor claw compressive strength was correlated with maximum pinch force. Additionally, we found that crayfish body size was a strong predictor of carapace compressive strength and thickness, whereas sex was not. The claw had greater compressive strength and thickness than the corresponding values for the carapace. Our study shows that the mechanical properties of the crayfish exoskeleton are largely a function of size and highlights the need to integrate mechanical properties into studies of animal morphology and performance.

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Section: Discussionmentioning

confidence: 99%

Size, but not sex, predicts pinch force and exoskeleton mechanical properties in crayfish of the genus Faxonius

Benson

Clotfelter

2023

Invertebrate Biology

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“…is article carried out a study on the rapid closing jet mechanism of pistol shrimp's claws. e current research on the pistol shrimp mainly focuses on the following aspects: on the one hand, it focuses on the body structure and evolution process of the pistol shrimp, as well as the basic biological characteristics and living habits [13][14][15][16]; on the other hand, it focuses on the shooting of the pistol through the high-speed camera system.…”

Section: Introductionmentioning

confidence: 99%

Research on the Rapid Closing Jet Mechanism of Pistol Shrimp’s Claws Based on Fluid Dynamic Grid

Wei

Quan

Cao

et al. 2021

Mathematical Problems in Engineering

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The predation behavior of the pistol shrimp is extremely special, and the predation process will produce a huge popping sound, which has caused extensive research by scholars from all over the world. This article carried out a study on the rapid closing jet mechanism of pistol shrimp’s claws. A theoretical model, based on the hydrodynamic characteristics of seawater and the theory of fluid-structure coupling, was proposed for the interaction between the claws and seawater. A simulation model was established using the finite volume software Fluent, and the rapid closing jet mechanism of pistol shrimp’s claws was verified by using fluid dynamic grid. This article studied the influence of different fluid models on the simulation results. The effects of the claws’ closing angular velocity and angular acceleration on the interaction between the claws and seawater were analyzed, which provides a theoretical basis for the development of new underwater kinetic energy weapons.

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“…The shock wave released by the collapse of cavitation bubbles is about 80 kPa at a distance of 4 cm [ 1 ], which is enough to stun and even kill the prey. When the claw is closed [ 7 ], there is an angular offset between the dactyl and the propus, which prevents physical contact between these parts, indicating that the noise is caused by the bubble collapse.…”

Section: Introductionmentioning

confidence: 99%

“…The collapsed cavitation produces high pressures and temperatures [ 4 ], thereby effectively forming a plasma with photons and shock waves through energy focusing [ 14 ]. In order to avoid the destruction of the claw structure by high-energy movement, it was found that the materials of the claw have good temperature resistance [ 15 ] and are subjected to more intense contact stresses [ 7 ].…”

Section: Introductionmentioning

confidence: 99%

Research on Claw Motion Characteristics and Cavitation Bubbles of Snapping Shrimp

Yang¹,

Shimu

et al. 2020

Applied Bionics and Biomechanics

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Snapping shrimp produces a high-speed jet through the rapid closure of the snapper claw, which stimulates the formation of cavitation bubbles of various shapes. In order to explore the fast motion characteristics of snapper claw, the formation and change process of cavitation, and the physical principles underlying the biological phenomena, the equivalent model of snapper claw was constructed through CT scanning technology. A high-speed camera was used to capture the claw’s motion characteristics, thereby simulating the production of cavitation bubbles by snapping shrimp. The results show that the rotation speeds of different species of snapping shrimps are different, as well as their motion characteristics. Cavitation is formed by the interaction of the pressure drop caused by the vortex at the nozzle with the inertia of the liquid inside the socket. Under the influence of the jet, the shapes of bubbles change from ring to cone, and eventually collapse into bubble clouds.

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Multi-scale structural design and biomechanics of the pistol shrimp snapper claw

Cited by 19 publications

References 34 publications

Size, but not sex, predicts pinch force and exoskeleton mechanical properties in crayfish of the genus Faxonius

Size, but not sex, predicts pinch force and exoskeleton mechanical properties in crayfish of the genus Faxonius

Research on the Rapid Closing Jet Mechanism of Pistol Shrimp’s Claws Based on Fluid Dynamic Grid

Research on Claw Motion Characteristics and Cavitation Bubbles of Snapping Shrimp

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