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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.