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Free Content On the Dynamics of Filter-Feeding by the Wavyback Skipjack (Euthynnus Afflnis)

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High-speed motion pictures of filter-feeding by the wavyback skipjack show that the fish travels an average of 5.9 body lengths/sec while feeding, with an observed maximum of 10.0 body lengths/sec. There is no change in speed and no increase in swimming effort as the fish opens its mouth and distends the orobranchial chamber to engulf its prey. The feeding mechanism is drag-free, and the fish feeds by swimming over its food rather than by sucking it in. The functional morphology of the feeding mechanism is discussed, and the role of the oral valves in scombroids is elucidated.

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Document Type: Research Article

Publication date: 1966-06-01

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  • The Bulletin of Marine Science is dedicated to the dissemination of high quality research from the world's oceans. All aspects of marine science are treated by the Bulletin of Marine Science, including papers in marine biology, biological oceanography, fisheries, marine affairs, applied marine physics, marine geology and geophysics, marine and atmospheric chemistry, and meteorology and physical oceanography.
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