|
| |
|
|
|
|
||||
| Home Help Feedback Subscriptions Archive Search Table of Contents | ||||
|
Fig. 7. Frequency distributions of running speed (A) and continuous running
distance (B) in the respirometric chamber. (A) Histograms of running speeds
measured in all 46 ants at the five different inclines: -60° (purple data
points), -30° (green), 0° (black), 30° (red), 60° (blue).
Speeds from 0 to ±5 mm s-1 were disregarded to avoid
disruption of curves by resting periods. Positive and negative running speeds
indicate locomotion against and with the direction of airflow, respectively.
Speed distributions were approximated by Gaussian fits (curves with
respective colours). Peak locations and standard deviations (0.85 times half
width) of the Gaussian curves are (in mm s-1) 0.7, 78
(-60°); 1.1, 101 (-30°); 2.0, 87 (0°); -0.6, 94 (30°); -0.1,
78 (60°). None of the values are significantly different from each other
(P>0.05). (B) Histograms of walking distances covered in
continuous bouts by ants in the respirometric chamber (time segments >0.4 s
during which the ant maintained running speeds >5 mm s-1;
N=42, n=4038 running segments). Level walking, black;
±30° incline, red; ±60° incline, green. Length of
respirometric chamber was 500 mm (vertical dotted line).
|
