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First published online November 1, 2006
Journal of Experimental Biology 209, 4503-4514 (2006)
Published by The Company of Biologists 2006
doi: 10.1242/jeb.02538
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Jet propulsion in the cold: mechanics of swimming in the Antarctic scallop Adamussium colbecki

Mark Denny* and Luke Miller

Hopkins Marine Station of Stanford University, Pacific Grove, CA 93950, USA


Figure 1
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  		Fig. 1. A heuristic model for the jet-inflation cycle in a swimming scallop (see text). See Table 1 for a definition of symbols.

 

Figure 2
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  		Fig. 2. The apparatus used to measure the resonant frequency and logarithmic decrement of the shell-hinge system. See Table 1 for a definition of symbols.

 

Figure 3
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  		Fig. 3. The apparatus used to measure the thermoelastic properties of abductin.

 

Figure 4
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  		Fig. 4. The geometry of the shell used to calculate stress in the resilium.

 

Figure 5
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  		Fig. 5. The apparatus used to measure the resilience of abductin. See Table 1 for a definition of symbols.

 

Figure 6
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  		Fig. 6. Results of a representative thermoelastic experiment. The component of force due to internal energy is negligible, while that due to entropy closely approximates the total force, indicating that A. colbecki abductin is an entropy elastomer.

 

Figure 7
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  		Fig. 7. Stress-compression ratio curves for A. colbecki abductin at four temperatures.

 

Figure 8
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  		Fig. 8. The resilience of A. colbecki abductin as a function of temperature. The broken lines show the range of values measured on a temperate scallop (Bowie et al., 1993Go). Error bars are 95% confidence limits.

 

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© The Company of Biologists Ltd 2006