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Table 3.

A one-second sub-sample of track parameters measured from P. americana males tracking pheromone (track), in the period of a plume pull, wind stop or middle of wind and plume tracking (event), and post-event responses (post event) in a laboratory wind tunnel from the Series 1 experiment

TreatmentNEventNet velocity (cm s–1)Ground speed (cm s–1)Track angle*(deg.)Body yaw* (deg.)Track width (cm)Inter-turn duration (s)Number of stopsStop duration (s)
Wind + plume 14 Track 23.1±9.5a 21.4±5.9b 21.4±11.5a 16.1±7.4a 3.6±2.8a 0.6±0.5a 0.15±0.4 0.13±0.06 
 14 Event 23.3±9.6a 30.4±9.1a 17.3±14.4a 15.1±9.7a 3.6±5.0a 0.5±0.7a  
 14 Post event 23.2±9.6a 25.5±5.0a,b 27.6±23.0a 23.2±18.3a 4.1±3.9a 0.4±0.4a  
Wind stop 16 Track 20.7±21.6a 21.5±9.7a 21.5±18.9a 17.4±18.0a 1.9±0.9b 0.3±0.1a  
 16 Event 21.1±21.4a 27.9±10.1a 19.0±8.8a 16.1±8.5a 2.5±2.1a,b 0.4±0.3a  
 16 Post event 22.2±22.6a 28.2±10.0a 20.5±11.4a 20.3±11.9a 4.7±2.9a 0.5±0.2a 0.06±0.3 0.167 
Plume pull 17 Track 21.9±15.0a 24.3±5.8a 21.9±18.3b 17.9±11.1a 2.7±1.9a 0.5±0.2a  
 17 Event 21.9±15.0a 29.0±9.3a 20.9±17.1b 14.1±7.1a 4.3±2.0a 0.6±0.3a  
 17 Post event 22.4±16.2a 23.9±9.2a 96.1±47.8a 44.0±23.2a 11.1±9.7a 0.9±0.5a  
TreatmentNEventNet velocity (cm s–1)Ground speed (cm s–1)Track angle*(deg.)Body yaw* (deg.)Track width (cm)Inter-turn duration (s)Number of stopsStop duration (s)
Wind + plume 14 Track 23.1±9.5a 21.4±5.9b 21.4±11.5a 16.1±7.4a 3.6±2.8a 0.6±0.5a 0.15±0.4 0.13±0.06 
 14 Event 23.3±9.6a 30.4±9.1a 17.3±14.4a 15.1±9.7a 3.6±5.0a 0.5±0.7a  
 14 Post event 23.2±9.6a 25.5±5.0a,b 27.6±23.0a 23.2±18.3a 4.1±3.9a 0.4±0.4a  
Wind stop 16 Track 20.7±21.6a 21.5±9.7a 21.5±18.9a 17.4±18.0a 1.9±0.9b 0.3±0.1a  
 16 Event 21.1±21.4a 27.9±10.1a 19.0±8.8a 16.1±8.5a 2.5±2.1a,b 0.4±0.3a  
 16 Post event 22.2±22.6a 28.2±10.0a 20.5±11.4a 20.3±11.9a 4.7±2.9a 0.5±0.2a 0.06±0.3 0.167 
Plume pull 17 Track 21.9±15.0a 24.3±5.8a 21.9±18.3b 17.9±11.1a 2.7±1.9a 0.5±0.2a  
 17 Event 21.9±15.0a 29.0±9.3a 20.9±17.1b 14.1±7.1a 4.3±2.0a 0.6±0.3a  
 17 Post event 22.4±16.2a 23.9±9.2a 96.1±47.8a 44.0±23.2a 11.1±9.7a 0.9±0.5a  

Values are means ± s.d. Values in the same column with the same letters do not differ significantly according to a split-plot ANOVA(P⩽0.05) and post-hoc Tukey's test

*

All angles are absolute values of the distributions measured

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