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Table 2.

Characteristics of pulses and interpulses in the luminescent courtship displays of the cypridinid ostracod Vargula annecohenae based on laboratory recordings

Pulse numberIntensity (as % of pulse 1)Pulse duration (ms) (N)Interpulse interval (s) (N)Interpulse distance (vertical; cm) (N)Interpulse distance (horizontal; cm) (N)
100 430±20 (16)    
57.3±5.5 (19) 330±18 (16) 1.30±0.05 (85) –0.07±0.24 (85) –0.28±0.21 (85) 
35.34±3.4 (19) 260±10 (16) 0.98±0.04 (85) 1.55±0.17 (85) 0.32±0.15 (85) 
30.31±4.4 (19) 260±10 (16) 0.83±0.01 (85) 2.53±0.17 (85) –0.10±0.16 (85) 
23.77±4.7(19) 240±9 (16) 0.76±0.01 (83) 3.41±0.15 (83) 0.21±0.19 (83) 
20.35±4.3(18) 220±10 (16) 0.73±0.01 (81) 3.81±0.15 (81) 0.24±0.24 (81) 
15.68±2.7(17) 210±6 (16) 0.73±0.01 (76) 4.05±0.15 (76) 0.38±0.33 (76) 
15.32±3.2 (17) 210±10 (15) 0.69±0.01 (69) 3.92±0.18 (69) –0.13±0.07 (69) 
14.53±1.3(17) 190±7 (15) 0.71±0.01 (51) 4.04±0.19 (51) 0.45±0.46 (51) 
10 14.13±3.4 (14) 180±8 (15) 0.69±0.03 (43) 3.73±0.19 (43) 0.00±0.07 (43) 
11 12.30±2.5(12) 190±9 (13) 0.67±0.01 (21) 3.57±0.23 (21) –0.26±0.08 (21) 
12 13.75±3.2(9) 180±11 (8) * * * 
Stationary phase (mean)  340±13 (48) 1.23±0.04 (170) 0.74±0.16 (170) 0.02±0.13 (170) 
Helical phase mean 18.41±1.5(122) 210±3 (129) 0.75±0.007(494) 3.77±0.05 (494) 0.23±0.10 (494) 
Pulse numberIntensity (as % of pulse 1)Pulse duration (ms) (N)Interpulse interval (s) (N)Interpulse distance (vertical; cm) (N)Interpulse distance (horizontal; cm) (N)
100 430±20 (16)    
57.3±5.5 (19) 330±18 (16) 1.30±0.05 (85) –0.07±0.24 (85) –0.28±0.21 (85) 
35.34±3.4 (19) 260±10 (16) 0.98±0.04 (85) 1.55±0.17 (85) 0.32±0.15 (85) 
30.31±4.4 (19) 260±10 (16) 0.83±0.01 (85) 2.53±0.17 (85) –0.10±0.16 (85) 
23.77±4.7(19) 240±9 (16) 0.76±0.01 (83) 3.41±0.15 (83) 0.21±0.19 (83) 
20.35±4.3(18) 220±10 (16) 0.73±0.01 (81) 3.81±0.15 (81) 0.24±0.24 (81) 
15.68±2.7(17) 210±6 (16) 0.73±0.01 (76) 4.05±0.15 (76) 0.38±0.33 (76) 
15.32±3.2 (17) 210±10 (15) 0.69±0.01 (69) 3.92±0.18 (69) –0.13±0.07 (69) 
14.53±1.3(17) 190±7 (15) 0.71±0.01 (51) 4.04±0.19 (51) 0.45±0.46 (51) 
10 14.13±3.4 (14) 180±8 (15) 0.69±0.03 (43) 3.73±0.19 (43) 0.00±0.07 (43) 
11 12.30±2.5(12) 190±9 (13) 0.67±0.01 (21) 3.57±0.23 (21) –0.26±0.08 (21) 
12 13.75±3.2(9) 180±11 (8) * * * 
Stationary phase (mean)  340±13 (48) 1.23±0.04 (170) 0.74±0.16 (170) 0.02±0.13 (170) 
Helical phase mean 18.41±1.5(122) 210±3 (129) 0.75±0.007(494) 3.77±0.05 (494) 0.23±0.10 (494) 

Pulse numbers 1–3 are in the stationary phase and 4–12 are in the helical phase

Values are means ± s.e.m. *No data available

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