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Fig. 5. (A) Swimming speed of A. aculeatus using the head raised (HR,
black) vs flat, dorsoventrally compressed (DVC, gray) body forms. DVC
swimming was consistently faster per individual than HR swimming (paired
t-test P=0.004). (B) Relative speed of modes. Mean speeds of
A. aculeatus during modes of locomotion measured in BL
s-1 (Freidman test statistic 16.00; P=0.003). Horizontal
lines are drawn over groups that are not significantly different from each
other, as determined by pairwise Wilcoxon signed rank tests adjusted for
multiple comparisons (
e=0.005). Maximum speeds are given
above these lines. Bars indicate standard error (s.e.m.), N=10 (jet),
9 (swim), 5 (walk), 5 (multi-armed walk), 10 (crawl). (C) Absolute speed of
modes. Mean speeds of A. aculeatus during modes of locomotion
measured in cm s-1 (Freidman test statistic 11.80;
P=0.019). Horizontal lines are drawn over groups that are not
significantly different from each other, as determined by pairwise Wilcoxon
signed rank tests adjusted for multiple comparisons
(e=0.005). Maximum speeds are given above these lines. Bars
indicate s.e.m., N=8 (jet), 9 (swim), 5 (walk), 5 (multi-armed walk),
10 (crawl).
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