George Lauder
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Fins in Formation: Hydrodynamic Impact of Median Fins in In-Line Fish Swimming Open
Median fins, including the dorsal and anal fins, influence fish propulsion by lowering body drag and increasing caudal fin thrust through active movement. While their role in solitary swimming is established, their impact on hydrodynamics …
Function of the tail in myliobatid rays: role in controlling body stability Open
Eagle rays, cownose rays and manta rays are the only batoid families exhibiting oscillatory locomotion, and are characterized by long, slender tails. This study investigates whether tail length influences body stability when the pectoral f…
Computational analysis of fish-foil pairing and wake energy extraction in low-speed flow Open
The energetic consequences of swimming within a neighboring fish’s vortex street remain a central question in collective locomotion. Recent flume experiments in which a flapping hydrofoil generated a biomimetic wake demonstrated that a tro…
Fish locomotor variation: connecting energetics and kinematic modulation Open
Analyses of vertebrate locomotion have frequently revealed variations in locomotor energetics and movement both among individuals and through time within an individual. This variation is often collapsed into mean values for broad comparati…
Hydrodynamic interactions of low-aspect-ratio oscillating panels in a tip-to-tip formation Open
The vertical, tip-to-tip arrangement of neighboring caudal fins, common in densely packed fish schools, has received much less attention than staggered or side-by-side pairings. We explore this configuration using a canonical system of two…
The tail of myliobatid rays controls body stability Open
Eagle rays, pelagic eagle rays, cownose rays, and manta rays are the only four batoid families exhibiting oscillatory locomotion, and are characterized by expanded pectoral fins and long, slender tails that can exceed body length. This stu…
Slippery and Smooth Shark Skin: How Mucus Transforms Surface Texture Open
Shark skin is covered in denticles that provide texture important for hydrodynamic function. In bony fishes, both skin texture and function are modified by mucus that covers the outermost layer of the skin and scales. Despite the similar p…
Quantifying the Denticle Multiverse: A Standardized Coding System to Capture Three Dimensional Morphological Variations for Quantitative Evolutionary and Ecological Studies of Elasmobranch Denticles Open
Synopsis Dermal denticles—microscopic tooth-like scales—are a major defining feature of elasmobranch skin, and are of interest to a wide array of fields, including paleontology, evolutionary biology, developmental biology, functional morph…
Understanding multi-fin swimming and maneuvering to develop highly capable swimming robots Open
Fish swim underwater with levels of agility and maneuverability that far exceed those of contemporary unmanned underwater vehicles (UUVs). While UUVs primarily rely on rectilinear motions, fish continuously move their fins and body--pitchi…
A hydrodynamic antenna: novel lateral line system in the tail of myliobatid stingrays Open
Eagle rays, cownose rays and manta rays (order Myliobatiformes) have a slender tail that can be longer than the animal’s body length, but its function and structure are unknown. Using histology, immunohistochemistry and three-dimensional i…
A hydrodynamic antenna: novel lateral line system in the tail of myliobatid stingrays Open
Eagle rays, cownose rays, and manta rays (family Myliobatidae) have a slender tail that can be longer than the animal’s body length, but its function and structure are unknown. Using histology, immunohistochemistry, and 3D imaging with mic…
Patterns of dermal denticle loss in sharks Open
As they grow, sharks both replace lost denticles and proliferate the number of denticles by developing new (de novo) denticles without prior denticle shedding. The loss and replacement of denticles has potential impacts on the energetic co…
Hydrodynamic Function of the Slimy and Scaly Surfaces of Teleost Fishes Open
Synopsis The scales and skin mucus of bony fishes are both proposed to have a role in beneficially modifying the hydrodynamics of water flow over the body surface. However, it has been challenging to provide direct experimental evidence th…
Collective movement of schooling fish reduces the costs of locomotion in turbulent conditions Open
The ecological and evolutionary benefits of energy-saving in collective behaviors are rooted in the physical principles and physiological mechanisms underpinning animal locomotion. We propose a turbulence sheltering hypothesis that collect…
Studying animal locomotion with multiple data loggers: quantifying time drift between tags Open
Temporal accuracy is a fundamental characteristic of logging technology and is needed to correlate data streams. Single biologgers sensing animal movement (accelerometers, gyroscope, magnetometers, collectively inertial measurement unit; I…
Energy conservation by collective movement in schooling fish Open
Many animals moving through fluids exhibit highly coordinated group movement that is thought to reduce the cost of locomotion. However, direct energetic measurements demonstrating the energy-saving benefits of fluid-mediated collective mov…
Author Response: Energy conservation by collective movement in schooling fish Open
Full text Figures and data Side by side Abstract eLife assessment eLife digest Introduction Results Discussion Materials and methods Appendix 1 Data availability References Peer review Author response Article and author information Metrics…
Collective movement of schooling fish reduces locomotor cost in turbulence Open
The ecological and evolutionary benefits of collective behaviours are rooted in the physical principles and physiological mechanisms underpinning animal locomotion. We propose a turbulence sheltering hypothesis that collective movements of…
Energy conservation by collective movement in schooling fish Open
Many animals moving through fluids exhibit highly coordinated group movement that is thought to reduce the cost of locomotion. However, direct energetic measurements demonstrating the energy-saving benefits of fluid-mediated collective mov…
Author Response: Energy conservation by collective movement in schooling fish Open
Many animals moving through fluids exhibit highly coordinated group movement that is thought to reduce the cost of locomotion. However, direct energetic measurements demonstrating the energy-saving benefits of fluid-mediated collective mov…
Fish robotics: multi-fin propulsion and the coupling of fin phase, spacing, and compliance Open
Fish coordinate the motion of their fins and body to create the time-varying forces required for swimming and agile maneuvers. To effectively adapt this biological strategy for underwater robots, it is necessary to understand how the locat…
Reviewer #1 (Public Review): Energy conservation by group dynamics in schooling fish Open
Many animals moving through fluids exhibit highly coordinated group movement that is thought to reduce the cost of locomotion. However, direct energetic measurements demonstrating the energy-saving benefits of fluid-mediated group movement…
Reviewer #3 (Public Review): Energy conservation by group dynamics in schooling fish Open
Many animals moving through fluids exhibit highly coordinated group movement that is thought to reduce the cost of locomotion. However, direct energetic measurements demonstrating the energy-saving benefits of fluid-mediated group movement…
Reviewer #2 (Public Review): Energy conservation by group dynamics in schooling fish Open
Many animals moving through fluids exhibit highly coordinated group movement that is thought to reduce the cost of locomotion. However, direct energetic measurements demonstrating the energy-saving benefits of fluid-mediated group movement…
Energy conservation by collective movement in schooling fish Open
Many animals moving through fluids exhibit highly coordinated group movement that is thought to reduce the cost of locomotion. However, direct energetic measurements demonstrating the energy-saving benefits of fluid-mediated collective mov…
Energy conservation by group dynamics in schooling fish Open
Many animals moving through fluids exhibit highly coordinated group movement that is thought to reduce the cost of locomotion. However, direct energetic measurements demonstrating the energy-saving benefits of fluid-mediated group movement…
The Denticle Multiverse: Morphological Diversity of Placoid Scales across Ontogeny in the Portuguese Dogfish, Centroscymnus coelolepis, and Its Systematic Implications Open
Centroscymnus coelolepis is a deep-water sleeper shark and, like most sharks, it is covered in placoid scales, or dermal denticles. The morphological diversity of the dermal denticles in this species, however, has not been described in det…