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First published online July 20, 2007
Journal of Experimental Biology 210, 2706-2713 (2007)
Published by The Company of Biologists 2007
doi: 10.1242/jeb.000703
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Mucus function and crossflow filtration in a fish with gill rakers removed versus intact

Jennifer C. Smith* and S. Laurie Sanderson{dagger}

Department of Biology, College of William and Mary, PO Box 8795, Williamsburg, VA 23187-8795, USA


Figure 1
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  		Fig. 1. Endoscopic images (right panels) and synchronized external images (left panels) digitized from DVCAM videotapes recorded at 125 Hz. The anterior of the fish is at the bottom of the endoscopic view, and at the right of the external view. The cannula through which the endoscope is inserted can be seen at the upper left of the external view. (A) Prior to the next feeding pump, food is introduced in front of the oral jaws through a tube. The second branchial arch (cb II) and the tips of two lateral rakers (r) on cb II are visible in the endoscopic view. These raker tips are approximately 0.2 mm wide. (B) The oral jaws have abducted, and food particles can be seen passing through the endoscopic field of view. (C) As stage 1 of a reversal begins, a mucus aggregate (m) is seen resting on the second and third branchial arches. (D) As stage 2 of a reversal clears mucus from the field of view, the row of lateral gill rakers (r) is visible on ceratobranchial III (cb III).

 




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