Table 2.

Results of analysis of variance of experiment 2

Frequency (kHz)P values from post-hoc comparisons to control
Speciesd.f.FP0 dB+6 dB+12 dB+18 dB
N. robustus 14417.24 <0.001 <0.05 <0.005 <0.001 <0.001
28423.82 <0.001 <0.05 <0.001 <0.001 <0.001
42416.07 <0.001 <0.001 <0.001 <0.001 <0.001
N. nebrascensis 2044.91 <0.005 =0.809=0.084 <0.05 <0.01
4045.92 <0.002 =0.091=0.058 <0.01 <0.001
N. bivocatus 2042.95 <0.05 =0.195=0.375 <0.05 =0.960
4042.16=0.100=0.911=0.343=0.168=0.144
  • P<0.05 indicates significant statistical results (indicated in bold type).