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. Author manuscript; available in PMC: 2015 Feb 1.
Published in final edited form as: Environ Entomol. 2014 Feb;43(1):146–156. doi: 10.1603/EN13152

Table 3.

Characteristics of male S. borelli calling songs. Florida data from Ulagaraj, 1976. Recorded in the field (see Methods).

Characters California
Mean ±SD
(N=37)
Florida
Mean ± SD
(N=52, 70, 70)
Unpaired
t test
Intensity (db) 74.73 ± 2.36 68.5 ± 12.8 0.0011
Carrier frequency (Hz) 2783.8 ± 97.7 2620 ± 140 < 0.0001
Pulse rate (pulses/sec) 50.54 ± 3.97 54.7 ± 4.6 < 0.0001
Trill length (TL) 16.86 ± 16.11 - -
Trill break duration (BD) 0.525 ± 0.5 - -
Trill pulse length (TPL) 0.013 ± 0.001 - -
Trill pulse interval (TPI) 0.007 ± 0.001 - -
Pulses per trill (P/T) 859.1 ± 884.3 - -