Evidence for ram suspension feeding by the piscivore, Seriola dumerili (Carangidae) |
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| Authors: | S Laurie Sanderson Catherine R Chesnutt Phillip S Lobel |
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| Institution: | (1) Department of Biology, College of William and Mary, Williamsburg, VA, 23187, U.S.A.;(2) Marine Biological Laboratory, Boston University Marine Program, Woods Hole, MA, 02543, U.S.A. |
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| Abstract: | Synopsis We have quantitatively analyzed a videotape of Seriola dumerili (Carangidae) displaying ram suspension-feeding behavior and ram ventilation in the field. This is the first report of facultative suspension feeding by a piscivorous carangid. The intraoral morphology of S. dumerili is not typical of ram suspension-feeding fishes in that closely-spaced, long gill rakers are lacking. While the mechanism of particle retention is not known for any ram suspension-feeding fish species, scanning electron microscopy revealed denticles on the branchial surfaces of S. dumerili that could play a role in particle entrapment. |
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| Keywords: | Filter feeding Ram ventilation Fish |
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