Summary statistics of DPIV variables in Triakis semifasciata and Chiloscyllium punctatum holding position at 1.0Ls-1 and during vertical maneuvering in Triakis semifasciata
| . | Chiloscyllium punctatum . | Triakis semifasciata . | . | . | . | . | ||
|---|---|---|---|---|---|---|---|---|
| Variable . | Hold, B . | Hold, L . | Rise, R . | Sink, S . | P-value . | SNK† . | ||
| Vertical body velocity (cm s-1) | 0.39±0.243 | 0.43±0.296 | 2.23±0.632 | -5.7±1.530 | 0.0004* | BLR>S | ||
| Body angle (degrees) | 9±1.638 | 11±0.995 | 19±1.498 | -3±2.441 | 0.0001* | R>BL>S | ||
| Path of motion angle (degrees) | 1.0±0.448 | 0.2±0.422 | 5.7±1.541 | -11.8±3.294 | 0.0002* | R>LB>S | ||
| Ring axis angle (degrees) | 125±4.701 | 120±3.120 | 135±2.881 | 101±7.431 | 0.0011* | BLR>S | ||
| Jet angle (degrees) | -44.5±3.642 | -38.6±4.190 | -34.7±5.767 | -7.1±(3.538 | 0.0010* | BLR<S | ||
| Tail angle (degrees) | 163±1.511 | 156±1.140 | 156±1.902 | 154±1.218 | 0.0022* | B>LRS | ||
| . | Chiloscyllium punctatum . | Triakis semifasciata . | . | . | . | . | ||
|---|---|---|---|---|---|---|---|---|
| Variable . | Hold, B . | Hold, L . | Rise, R . | Sink, S . | P-value . | SNK† . | ||
| Vertical body velocity (cm s-1) | 0.39±0.243 | 0.43±0.296 | 2.23±0.632 | -5.7±1.530 | 0.0004* | BLR>S | ||
| Body angle (degrees) | 9±1.638 | 11±0.995 | 19±1.498 | -3±2.441 | 0.0001* | R>BL>S | ||
| Path of motion angle (degrees) | 1.0±0.448 | 0.2±0.422 | 5.7±1.541 | -11.8±3.294 | 0.0002* | R>LB>S | ||
| Ring axis angle (degrees) | 125±4.701 | 120±3.120 | 135±2.881 | 101±7.431 | 0.0011* | BLR>S | ||
| Jet angle (degrees) | -44.5±3.642 | -38.6±4.190 | -34.7±5.767 | -7.1±(3.538 | 0.0010* | BLR<S | ||
| Tail angle (degrees) | 163±1.511 | 156±1.140 | 156±1.902 | 154±1.218 | 0.0022* | B>LRS | ||
These mean values result from using the a priori classification of locomotor behavior into three discrete classes: holding position, rising and sinking.
Values are means ± S.E.M. for five sequences in each of three individuals (total N=15 for each column).
L, total body length.
Significant at the Bonferroni corrected P-value of 0.008.
Student-Newman-Keuls comparison among behaviors within Triakis semifasciata.