The Senses of Fish: Adaptations for the Reception of Natural Stimuli

Marshall, Justin

doi:10.1111/j.1467-2979.2006.00207.x

Cited by 3 publications

(3 citation statements)

References 3 publications

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“…There exist mathematical formulations for many of the sensory systems in fish (Atema et al., 1988; Giske et al., 1998; von der Emde et al., 2012), which could be included in a salmon digital twin, especially to improve the modelling of stress (e.g. Zhang et al., 2023).…”

Section: Results: What It Is Like To Be a Teleost Fishmentioning

confidence: 99%

Premises for a digital twin of the Atlantic salmon in its world: Agency, robustness, subjectivity and prediction

Budaev,

Dumitru,

Enberg

et al. 2024

Aquaculture Fish & Fisheries

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Aquaculture of Atlantic salmon Salmo salar is in transition to precision fish farming and digitalization. As it is easier, cheaper and safer to study a digital replica than the system itself, a model of the fish can potentially improve monitoring and prediction of facilities and operations and replace live fish in many what‐if experiments. Regulators, consumers and voters also want insight into how it is like to be a salmon in aquaculture. However, such information is credible only if natural physiology and behaviour of the living fish is adequately represented. To be able to predict salmon behaviour in unfamiliar, confusing and stressful situations, the modeller must aim for a sufficiently realistic behavioural model based on the animal's proximate robustness mechanisms. We review the knowledge status and algorithms for how evolution has formed fish to control decisions and set priorities for behaviour and ontogeny. Teleost body control is through genes, hormones, nerves, muscles, sensing, cognition and behaviour, the latter being agentic, predictive and subjective, also in a man‐made environment. These are the challenges when constructing the digital salmon. This perspective is also useful for modelling other domesticated and wild animals in Anthropocene environments.

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Section: Results: What It Is Like To Be a Teleost Fishmentioning

confidence: 99%

Premises for a digital twin of the Atlantic salmon in its world: Agency, robustness, subjectivity and prediction

Budaev,

Dumitru,

Enberg

et al. 2024

Aquaculture Fish & Fisheries

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show abstract

“…The locomotion capabilities and environmental sensing abilities of fish-like creatures have evolved over 400 million years, making them well-adapted to underwater environments 1,2 . Inspired by these natural phenomena, we can improve the design of underwater robots for enhanced maneuverability, stealth, and energy efficiency by mimicking the behavior, physiology, and anatomy of fish 1 .…”

Section: Introductionmentioning

confidence: 99%

Shielded fringe field compression sensors for open ocean applications

Bruns,

Papotti,

Mahmoudinezhad

et al. 2024

Electroactive Polymer Actuators and Devices (EAPAD) XXVI

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Fringe field sensors based on piezo dielectrics offer opportunities in under water sensing as they are solid state, incompressible and robust. Questions remain regarding their susceptibility to noise. Specifically, we refer to anomalous outputs when the sensor is brought in close proximity to or just touching a conductive object. One solution involves isolation through a flexible Faraday cage.We have investigated two approaches for such a Faraday cage. One approach utilizes a conductive fabric while the other is based on a carbon filled dielectric. We compared the performance of both shielding approaches regarding noise suppression and their influence on sensitivity. The anomalous effects upon contact with conductive objects leading to inconsistent measurements were overcome. Furthermore, their response to salinity levels and submersion time were investigated and the influence of design parameters on the performance of the sensor determined in a Design of Experiment study. Varied parameters include overall footprint alongside electrode spacing and width. Performing a full factorial design plan enabled us to quantify the relations between the parameters. This investigation improved signal stability in the piezo dielectric fringe field sensors, making it possible to design a broader range of sensory systems able to withstand the harsh marine environment. The sensor will assist fish robots in their exploration of the 'Silent World'.

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“…Blind cave fish use their lateral line organs to navigate tunnels without light and in high turbidity 2 . Catfish use their barbells to localize objects 3 . Other, specifically pelagic, fish have fundamentally different needs than ground, reef, or cave dwelling fish.…”

Section: Introductionmentioning

confidence: 99%

Efficient swimming through electroactive polymer hydrodynamic sensing

Bruns¹,

Tang²,

Mahmoudinezhad³

et al. 2023

Electroactive Polymer Actuators and Devices (EAPAD) XXV

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For long-range swimming fish, low cost of transportation is a critical requirement. This also applies to autonomous fishlike robots (AFR). As with their biological cohorts, AFR require sensory input that characterizes the flow of the water surrounding them. Thus, there is a need for low power hydrodynamic sensors that can be deployed on a fish-like robot, and which can provide flow information from open water conditions. Electroactive polymers offer opportunities for flow sensing on soft and flexible AFR.We developed and evaluated an approach for capacitive electroactive polymer flow sensing. This uses dielectric elastomer sensor membranes mounted on a liquid-filled cavity protruding into the flow. Flow speed and incident angle on a hydrofoil standing in for the fish are registered through electrical capacitance changes resulting from deformation of its 350μm thick membrane. Through its triple-electrode design, measurements are largely shielded against the influence of the surrounding water on the capacitor. Differences in flow speed along the sensor can be detected with high reproducibility for extended durations of time. The developed sensors were assessed regarding accuracy, reliability, and durability.For performance and long-term testing, an automated tabletop water tunnel test rig was created. This setup enables sensor testing for flows up to 1 m/s with automated incident angle control and data logging.We are thus presenting further steps towards robust ocean-faring hydrodynamic sensory systems by demonstrating advances in electroactive sensory technology and testing facilities.

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The Senses of Fish: Adaptations for the Reception of Natural Stimuli

Cited by 3 publications

References 3 publications

Premises for a digital twin of the Atlantic salmon in its world: Agency, robustness, subjectivity and prediction

Premises for a digital twin of the Atlantic salmon in its world: Agency, robustness, subjectivity and prediction

Shielded fringe field compression sensors for open ocean applications

Efficient swimming through electroactive polymer hydrodynamic sensing

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