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Paddlefish Buccal Flow Velocity During Ram Suspension Feeding And Ram Ventilation, S. Laurie Sanderson, Joseph Cech Jr, A Y. Cheer
Paddlefish Buccal Flow Velocity During Ram Suspension Feeding And Ram Ventilation, S. Laurie Sanderson, Joseph Cech Jr, A Y. Cheer
Arts & Sciences Articles
A micro-thermistor probe was inserted into the buccal cavity of freely swimming paddlefish to measure flow velocity during ram ventilation, ram suspension feeding and prey processing. Swimming speed was measured from videotapes recorded simultaneously with the buccal flow velocity measurements. Both swimming velocity and buccal flow velocity were significantly higher during suspension feeding than during ram ventilation. As the paddlefish shifted from ventilation to feeding, buccal flow velocity increased to approximately 60 % of the swimming velocity. During prey processing, buccal flow velocity was significantly higher than the swimming velocity, indicating that prey processing involves the generation of suction. The …