Oscillations in the near-field feeding current of a calanoid copepod are useful for particle sensing

Giuffre, Carl; Hinow, Peter; Jiang, Houshuo; Strickler, J. Rudi

doi:10.1038/s41598-019-54264-1

Cited by 9 publications

(7 citation statements)

References 46 publications

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“…Mechanosensitivities is higher for species inhabiting quiet environment [4]. Sensing is so precise that it enables the organism to determine the position and quality of food particles, and to alter the near-field flow to capture and manipulate the particles for ingestion or rejection [5,6]. It was also shown that temperature changes impact the mechanosensitivity of small zooplankton, more than the thermally-induced effects on metabolism [7].…”

Section: Introductionmentioning

confidence: 99%

Effects of low-frequency noise and temperature on copepod and amphipod performance

Tremblay

Leiva

Beermann

et al. 2019

Proceedings of Meetings on Acoustics

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Offshore wind farms (OWF) are bound to increase as a mitigation strategy to reduce the emission of greenhouse gases, it is crucial to address all of their potential impacts on key ecosystem components in detail. Especially, the chronic effect of noise created during OWF turbine operations (duration 20-25 years) must be understood. As sensitive receptors cover the whole body of crustaceans to detect their surroundings, those low frequency noises may disrupt basic ecological (prey detection and predator avoidance) and physiological (metabolism) functions. Here we present an investigation designed to understand the joint effect of noise and increased temperature on copepod. The pelagic copepod Acartia tonsa is commonly used as a proxy for a range of fundamental processes that relate to marine planktonic crustaceans. Given that higher temperatures increase metabolic demands, the experiment was conducted at three different temperature levels (18, 21, 24°C) combined with silent and noise treatments. We assessed the combined effects on energetic balance, and oxidative stress indicators. The outputs of the project will provide important information on the potential impact of low-frequency noise on marine invertebrate key organisms with implications for secondary production and ecosystem functioning.

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Section: Introductionmentioning

confidence: 99%

Effects of low-frequency noise and temperature on copepod and amphipod performance

Tremblay

Leiva

Beermann

et al. 2019

Proceedings of Meetings on Acoustics

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“…Last, we have focused on the sensing of hydrodynamic disturbances caused by the mismatch between the rigid body motion of a prey particle and the deformational flows of feeding currents. Another possible mechanism of sensing may be the phase mismatch of non‐neutrally buoyant particles with the oscillatory feeding current (Giuffre et al 2019). In that case, additional hydrodynamic signals arising from the net force exerted on the fluid by the weight of the particle are unavoidable and could also be sensed by the copepod.…”

Section: Discussionmentioning

confidence: 99%

Can the mechanoreceptional setae of a feeding‐current feeding copepod detect hydrodynamic disturbance induced by entrained free‐floating prey?

Shen

Yao

Marcos

et al. 2021

Limnology & Oceanography

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Copepods that catch prey using feeding currents beat their cephalic appendages to generate flow entrainment, and detect the presence of nearby prey through the mechanoreceptional setae on the antennules and other appendages. It remains unclear whether the feeding current can be used by the copepod to gain information about its surroundings by sensing when the current is disturbed by nearby particles. In this article, we present a numerical model to address how much the presence of free-floating prey can alter the feeding current velocity field, and how these prey-induced disturbances modify setal deformation patterns. We prescribe the beating strokes of the feeding appendages, and quantify the changes in the bending flows across the setae and setal deformations due to the prey entrainment. We find that, first, the seta bends more due to the time-averaged velocity component of the feeding current, while filtering out the oscillatory component. Second, 100 μm diameter freefloating prey do not induce any noticeable change in deformations of the proximal and distal setae unless they are less than 10 or 5.5 prey radii from the antennules, respectively. Larger prey cause bigger flow disturbances than small prey, which are expected to be even harder to detect. Last, if setae are responsive to changes in deformation relative to the deformations in the absence of prey, the distal seta may have long-ranged sensitivity to assist in detection of prey near the proximal seta, but if setae are responsive to absolute changes in deformation, both setae have very short-ranged sensitivity.

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“…These interactions (i.e., making contact with and handling of or manipulating particles) were previously documented in detail through observation under a binocular microscope [ 19 – 28 ]. In this context, setae morphology and mesh size of the filtering structure and the surface chemistry and forces (e.g., van der Waals forces) of feeding structures and particles are of high importance, especially when the particles are of smaller diameter than the meshes of the sieve [ 14 , 29 – 36 ].…”

Section: Introductionmentioning

confidence: 99%

“…To test how the feeding efficiency depends on the mechanical property gradients and the adhesion forces of the setae, we here present a numerical model that simulates the interplay between setae during suspension feeding. In the past, numerical simulations were used to study the detection of prey, mates, or predators and the feeding current generation by limb motion [ 28 , 39 – 41 ]. However, mechanical property gradients and adhesion of setae were previously not addressed.…”

Section: Introductionmentioning

confidence: 99%

Suspension feeding in Copepoda (Crustacea) – a numerical model of setae acting in concert

Filippov¹,

Krings²,

Gorb³

2023

Beilstein J. Nanotechnol.

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Suspension feeding via setae collecting particles is common within Crustacea. Even though the mechanisms behind it and the structures themselves have been studied for decades, the interplay between the different setae types and the parameters contributing to their particle collecting capacities remain partly enigmatic. Here, we provide a numerical modeling approach to understand the relationship among the mechanical property gradients, the mechanical behavior and the adhesion of setae, and the feeding efficiency of the system. In this context, we set-up a simple dynamic numerical model that takes all of these parameters into account and describes the interaction with food particles and their delivery into the mouth opening. By altering the parameters, it was unraveled that the system performs best when the long and short setae have different mechanical properties and different degrees of adhesion since the long setae generate the feeding current and the short ones establish the contact with the particle. This protocol can be applied to any system in the future as the parameters (i.e., properties and arrangement of particles and setae) can be easily altered. This will shed light on the biomechanical adaptations of these structures to suspension feeding and provide inspiration for biomimetics in the field of filtration technologies.

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Oscillations in the near-field feeding current of a calanoid copepod are useful for particle sensing

Cited by 9 publications

References 46 publications

Effects of low-frequency noise and temperature on copepod and amphipod performance

Effects of low-frequency noise and temperature on copepod and amphipod performance

Can the mechanoreceptional setae of a feeding‐current feeding copepod detect hydrodynamic disturbance induced by entrained free‐floating prey?

Suspension feeding in Copepoda (Crustacea) – a numerical model of setae acting in concert

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