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Morphology, swimming performance and propulsive mode of six co-occurring hydromedusae.
TLDR
An examination of the wakes behind swimming medusae indicated that, in contrast to the clearly defined jet structures produced by prolate species, oblatemedusae did not produce defined jets but instead produced prominent vortices at the bell margins, which are consistent with a predominantly drag-based, rowing mode of propulsion by the oblate species. Expand
Locating a mate in 3D: the case of Temora longicornis
TLDR
Observations of males tracking their own trails and the trails of other males bring into question the speci¢city of trails as a mechanism promoting reproductive isolation among co-occurring planktonic copepod speciesTemora longicornis. Expand
Flow patterns generated by oblate medusan jellyfish: field measurements and laboratory analyses
TLDR
The lateral vortex motif discovered here appears to be critical to the dual function of the medusa bell as a flow source for feeding and propulsion and has a greater volume and closer spacing than predicted by prevailing models of medusan swimming. Expand
Passive energy recapture in jellyfish contributes to propulsive advantage over other metazoans
TLDR
It is demonstrated, contrary to prevailing views, that the jellyfish (Aurelia aurita) is one of the most energetically efficient propulsors on the planet, exhibiting a cost of transport lower than other metazoans and reduced metabolic demand by passive energy recapture improves the cost of travel by 48%, allowing jellyfish to achieve the large sizes required for sufficient prey encounters. Expand
Stealth predation and the predatory success of the invasive ctenophore Mnemiopsis leidyi
TLDR
It is demonstrated that the predatory success of the lobate ctenophore Mnemiopsis leidyi lies in its use of cilia to generate a feeding current that continuously entrains large volumes of fluid, yet is virtually undetectable to its prey. Expand
An algorithm to estimate unsteady and quasi-steady pressure fields from velocity field measurements
TLDR
A method for estimating the pressure field corresponding to velocity field measurements such as those obtained by using particle image velocimetry is described and characterized, thereby eliminating the need for measurement interpolation during this step and significantly reducing the computational cost of the algorithm relative to previous approaches. Expand
Morphological diversity of medusan lineages constrained by animal–fluid interactions
TLDR
It is demonstrated that constraints in available locomotor muscular force result in a trade-off between high-thrust swimming via jet propulsion and high-efficiency swimming via a combined jet-paddling propulsion, which is reflected in the morphological diversity of medusae. Expand
Testing for resistance of pelagic marine copepods to a toxic dinoflagellate
TLDR
The results of the present study have important implications for understanding how grazer populations may respond to the introduction of toxic algae to their environment, and suggest that grazer resistance may be a feedback mechanism that may lead to bloom control. Expand
Morphology, fluid motion and predation by the scyphomedusa Aurelia aurita
TLDR
It is predicted that A. aurita will select zooplankton such as barnacle nauplii and some slow swimming hydromedusae, while faster copepods will be negatively selected, and that medusae of a specific diameter will positively select prey with escape speeds slower than the flow velocities at their bell margins. Expand
A wake-based correlate of swimming performance and foraging behavior in seven co-occurring jellyfish species
TLDR
This work reports the identification of a robust, fluid dynamic correlate of distinct ecological functions in seven jellyfish species that represent a broad range of morphologies and foraging modes, and proposes that higher organisms can also be understood in terms of these fluid dynamic organizing principles. Expand
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