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Table 2 Statistical comparison of male and female hoo call contexts

From: Context-specific close-range “hoo” calls in wild gibbons (Hylobates lar)

Acoustic parameter (n value) Sex Context
df F p df F p
Duration (n = 379) 1.0, 25.0 0.9 0.334 5.0, 353.8 6.0 <0.001***
Peak frequency (n = 378) 1.0, 20.7 19.8 <0.001*** 5.0, 354.5 11.8 <0.001***
Low frequency (n = 377) 1.0, 24.6 30.1 <0.001*** 5.0, 361.9 16.3 <0.001***
Delta frequency (n = 377) 1.0, 23.2 0.7 0.422 5.0, 350.4 7.5 <0.001***
Inter-call interval (n = 300) 1.0, 19.3 0.17 0.7 5.0, 247.8 11.4 <0.001***
Intensity (n = 173) 1.0, 21.1 0.7 0.423 5.0, 156.6 7.8 <0.001***
  1. All tests were LMMs with sex and context as fixed factors, and subject ID as a random factor; ***= significant difference; df: numerator, denominator.