Hydrodynamical Fingerprint of a Neighbour in a Fish Lateral Line

Li, Gen; Kolomenskiy, Dmitry; H, Liu; Thiria, Benjamin; Godoy-Diana, Ramiro

doi:10.3389/frobt.2022.825889

Cited by 8 publications

(8 citation statements)

References 57 publications

(69 reference statements)

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“…But considering that fishes swim at speeds about 10 cm/s, and simplifying a fish to a flat sheet in a flow, the Prandtl theory and Blasius equation ( 44 ) yield a shear stress of merely ~0.5 dyn cm −2 at 5 cm from the edge of the plate, which corresponds to the middle of the fish. This estimate, in agreement with literature data ( 45 ), suggests that keratocytes perform flow mechanotaxis for shear conditions that they do not encounter physiologically. A physiological function is then dubious, and evolution had a priori no opportunity to shape a specific biosignaling mechanism for keratocyte flow mechanotaxis.…”

Section: Discussionsupporting

confidence: 92%

Keratocytes migrate against flow with a roly-poly-like mechanism

Noray

Manca

Mainil

et al. 2022

Proc. Natl. Acad. Sci. U.S.A.

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While cell migration can be directed by various mechanical cues such as force, deformation, stiffness, or flow, the associated mechanisms and functions may remain elusive. Single cell migration against flow, repeatedly reported with leukocytes, is arguably considered as active and mediated by integrin mechanotransduction, or passive and determined by a mechanical bias. Here, we reveal a phenotype of flow mechanotaxis with fish epithelial keratocytes that orient upstream or downstream at shear stresses around tens of dyn cm −2 . We show that each cell has an intrinsic orientation that results from the mechanical interaction of flow with its morphology. The bulbous trailing edge of a keratocyte generates a hydrodynamical torque under flow that stabilizes an upstream orientation, just as the heavy lower edge of a roly-poly toy generates a gravitational torque that stabilizes an upright position. In turn, the wide and flat leading edge of keratocytes destabilizes upstream orientation, allowing the existence of two distinct phenotypes. To formalize these observations, we propose a simple mechanical model that considers keratocyte morphology as a hemisphere preceded by a wide thin sheet. Our findings show that this model can recapitulate the phase diagram of single cell orientation under flow without adjustable parameters. From a larger perspective, this passive mechanism of keratocytes flow mechanotaxis implies a potential absence of physiological function and evolution-driven process.

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Section: Discussionsupporting

confidence: 92%

Keratocytes migrate against flow with a roly-poly-like mechanism

Noray

Manca

Mainil

et al. 2022

Proc. Natl. Acad. Sci. U.S.A.

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“…Swarms of underwater swimming robots could then be used for environmental monitoring or search and rescue, where the large numbers improve area coverage and parallel processing. A number of systems exist that use an artificial lateral line to gain information about a neighbouring individual [90][91][92][93], which mark the first steps towards an artificial lateral line controlled swarm, and this work could help to reduce the cost and complexity of the lateral line required.…”

Section: Discussionmentioning

confidence: 99%

Lateral line morphology, sensory perception and collective behaviour in African cichlid fish

et al. 2023

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The lateral line system of fishes provides cues for collective behaviour, such as shoaling, but it remains unclear how anatomical lateral line variation leads to behavioural differences among species. Here we studied associations between lateral line morphology and collective behaviour using two morphologically divergent species and their second-generation hybrids. We identify collective behaviours associated with variation in canal and superficial lateral line morphology, with closer proximities to neighbouring fish associated with larger canal pore sizes and fewer superficial neuromasts. A mechanistic understanding of the observed associations was provided by hydrodynamic modelling of an artificial lateral line sensor, which showed that simulated canal-based neuromasts were less susceptible to saturation during unidirectional movement than simulated superficial neuromasts, while increasing the canal pore size of the simulated lateral line sensor elevated sensitivity to vortices shed by neighbouring fish. Our results propose a mechanism behind lateral line flow sensing during collective behaviour in fishes.

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“…When the frequencies of the two hydrofoils are matched, stable configurations exist for a range of heaving amplitudes. Intriguingly, an oscillatory mode also exists in the regime where the follower swimming fish can be characterized by tomographic PIV ( permission from [43]), and hydrodynamic interactions between a pair of fish can be studied using (d ) fluid simulations ( permission from [44]) and (e) hydrofoil experiments ( permission from [45]).…”

Section: Understanding Fluid Flowmentioning

confidence: 99%

The role of hydrodynamics in collective motions of fish schools and bioinspired underwater robots

Ko,

Lauder,

Nagpal

2023

J. R. Soc. Interface.

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Collective behaviour defines the lives of many animal species on the Earth. Underwater swarms span several orders of magnitude in size, from coral larvae and krill to tunas and dolphins. Agent-based algorithms have modelled collective movements of animal groups by use of social forces , which approximate the behaviour of individual animals. But details of how swarming individuals interact with the fluid environment are often under-examined. How do fluid forces shape aquatic swarms? How do fish use their flow-sensing capabilities to coordinate with their schooling mates? We propose viewing underwater collective behaviour from the framework of fluid stigmergy , which considers both physical interactions and information transfer in fluid environments. Understanding the role of hydrodynamics in aquatic collectives requires multi-disciplinary efforts across fluid mechanics, biology and biomimetic robotics. To facilitate future collaborations, we synthesize key studies in these fields.

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Hydrodynamical Fingerprint of a Neighbour in a Fish Lateral Line

Cited by 8 publications

References 57 publications

Keratocytes migrate against flow with a roly-poly-like mechanism

Keratocytes migrate against flow with a roly-poly-like mechanism

Lateral line morphology, sensory perception and collective behaviour in African cichlid fish

The role of hydrodynamics in collective motions of fish schools and bioinspired underwater robots

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