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Material properties and biochemical composition of mineralized vertebral cartilage in seven elasmobranch species (Chondrichthyes)
Ver vertebral cartilage was found to be as stiff and strong as mammalian trabecular bone and a significant predictor of material properties.
The contribution of mineral to the material properties of vertebral cartilage from the smooth-hound shark Mustelus californicus
Shark vertebral cartilage did not show a substantial viscoelastic response at biologically relevant strain rates, validating the use of quasistatic testing for this material.
Testing biomimetic structures in bioinspired robots: how vertebrae control the stiffness of the body and the behavior of fish-like swimmers.
The hypothesis that stiffness of the body controls swimming behavior and that both stiffness and behavior can be altered by changes in the morphology of the vertebral column is supported.
Turning maneuvers in sharks: Predicting body curvature from axial morphology
A dominant role for the vertebrae, intervertebral joints, and the body will more accurately predict differences in body curvature during swimming rather than a single meristic such as total vertebral number alone is proposed.
Age and growth of sharks: do vertebral band pairs record age?
In all species examined, band pair deposition was closely related to body girth and the structural properties of the cartilaginous skeleton, relative to maximum size, and body type, which has strong implications for accurately assessing age for fisheries management of these species.
Go reconfigure: how fish change shape as they swim and evolve.
Using a combination of live, swimming fishes and digital robotic fish that are autonomous and self-propelled, the functional relation between undulatory and postural reconfiguration in forward swimming, backward swimming, and yaw turning is examined.
Automatic control: the vertebral column of dogfish sharks behaves as a continuously variable transmission with smoothly shifting functions
Characterization of non-linear elasticity and viscosity throughout the bending oscillation reveals that the shark vertebral column behaves as both a spring and a brake, with smooth transitions between them for continuously variable power transmission.
Sink and swim: kinematic evidence for lifting-body mechanisms in negatively buoyant electric rays Narcine brasiliensis
Kinematic evidence is presented that supports the hypothesis that the dorso-ventrally flattened body disc generates lift during both BCF swimming and gliding and that both the pitch of the body disc and the tail, along with undulatory frequency, interact to control horizontal swimming speed and Strouhal number duringBCF swimming.
An electric ray inspired Biomimetic Autonomous Underwater Vehicle
The development of a novel Biologically-inspired (or Biomimetic) Autonomous Underwater Vehicle (BAUV) inspired by the Pacific electric ray is addressed. The design and hardware implementation of