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A fluid mechanical model for current-generating-feeding of jellyfish and the effect of prey size and escape forces

Peng, Jifeng and Dabiri, John (2009) A fluid mechanical model for current-generating-feeding of jellyfish and the effect of prey size and escape forces. Integrative and Comparative Biology, 49 (S1). E133-E133. ISSN 1540-7063. http://resolver.caltech.edu/CaltechAUTHORS:20130319-092830725

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Abstract

Many jellyfish species, e.g. moon jellyfish Aurelia aurita, use body motion to generate fluid currents which carry their prey to the vicinity of their capture appendages. In this study, a model was developed to understand the fluid mechanics for this current-generating-feeding mode of jellyfish. The flow generated by free-swimming Aurelia aurita was measured using digital particle image velocimetry. The dynamics of prey (e.g., brine shrimp Artemia) in the flow field were described by a modified Maxey-Riley equation which takes into consideration the inertia of prey and the escape forces, which prey exert in the presence of predator. A Lagrangian analysis was used to identify the region of the flow in which prey can be captured by the jellyfish and the clearance rate was quantified. The study provides a new methodology to study biological current-generating-feeding and the transport and mixing of particles in fluid flow in general.


Item Type:Article
Related URLs:
URLURL TypeDescription
http://dx.doi.org/10.1093/icb/icp002 DOIUNSPECIFIED
http://icb.oxfordjournals.org/content/49/suppl_1/e1PublisherUNSPECIFIED
Additional Information:© 2009 Oxford University Press.
Record Number:CaltechAUTHORS:20130319-092830725
Persistent URL:http://resolver.caltech.edu/CaltechAUTHORS:20130319-092830725
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:37555
Collection:CaltechAUTHORS
Deposited By: Tony Diaz
Deposited On:19 Mar 2013 22:16
Last Modified:19 Mar 2013 22:16

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