| The benefits of planar circular mouths on suction feeding performance. | |
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MedLine Citation:
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PMID: 22319101 Owner: NLM Status: Publisher |
Abstract/OtherAbstract:
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Suction feeding is the most common form of prey capture across aquatic feeding vertebrates and many adaptations that enhance efficiency and performance are expected. Many suction feeders have mechanisms that allow the mouth to form a planar and near-circular opening that is believed to have beneficial hydrodynamic effects. We explore the effects of the flattened and circular mouth opening through computational fluid dynamics simulations that allow comparisons with other mouth profiles. Compared to mouths with lateral notches, we find that the planar mouth opening results in higher flow rates into the mouth and a region of highest flow that is positioned at the centre of the mouth aperture. Planar mouths provide not only for better total fluid flow rates through the mouth but also through the centre of the mouth near where suction feeders position their prey. Circular mouths are shown to provide the quickest capture times for spherical and elliptical prey because they expose the prey item to a large region of high flow. Planar and circular mouths result in higher flow velocities with peak flow located at the centre of the mouth opening and they maximize the capacity of the suction feeders to exert hydrodynamic forces on the prey. |
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Authors:
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Tyler Skorczewski; Angela Cheer; Peter C Wainwright |
Publication Detail:
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Type: JOURNAL ARTICLE Date: 2012-2-7 |
Journal Detail:
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Title: Journal of the Royal Society, Interface / the Royal Society Volume: - ISSN: 1742-5662 ISO Abbreviation: - Publication Date: 2012 Feb |
Date Detail:
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Created Date: 2012-2-9 Completed Date: - Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 101217269 Medline TA: J R Soc Interface Country: - |
Other Details:
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Languages: ENG Pagination: - Citation Subset: - |
Affiliation:
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Department of Mathematics, University of California Davis, , One Shields Avenue, Davis, CA 95616, USA. |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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