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Biol Bull 172: 61-68. (February 1987)
© 1987 Marine Biological Laboratory
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FLOW-ASSISTED MANTLE CAVITY REFILLING IN JETTING SQUID

STEVEN VOGEL 1

1 Department of Zoology, Duke University, Durham, North Carolina 27706

During rapid, rearward, repetitive jetting, the mantle of a squid is expanded laterally by hydrodynamic pressure differences between the region of greatest girth and the refilling apertures beneath its downstream margin; this flow-induced expansion assists refilling between jet pulses. Estimates derived from measurements of pressure distributions on a model in wind tunnels indicate that about 50% of the pressure available for refilling is flow-induced at a speed of 3 m·s-1 while 90% is flow-induced at 9 m·s-1.

Submitted on August 8, 1986
Accepted on November 25, 1986




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