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Table 1 Hearing threshold values.

From: Ontogenetic development of auditory sensitivity and sound production in the squeaker catfish Synodontis schoutedeni

f (kHz) XXS XS S M L XL
0.05 100.83 +/- 0.79 102.50 +/- 1.31 94.50 +/- 1.63 89.00 +/- 0.77 96.00 +/- 1.00 94.83 +/- 1.42
0.1 96.83 +/- 1.56 91.33 +/- 1.50 82.17 +/- 2.81 80.00 +/- 0.89 85.75 +/- 4.29 83.67 +/- 0.71
0.3 90.33 +/- 2.23 81.00 +/- 4.19 70.33 +/- 2.97 72.00 +/- 3.83 70.25 +/- 4.03 72.33 +/- 3.61
0.5 87.17 +/- 3.06 69.83 +/- 2.09 61.33 +/- 3.58 72.00 +/- 2.92 70.25 +/- 4.25 74.00 +/- 3.74
0.8 85.75 +/- 3.20 74.33 +/- 1.65 65.50 +/- 1.73 70.00 +/- 3.26 68.50 +/- 3.48 73.50 +/- 3.05
1 84.75 +/- 2.68 74.83 +/- 2.77 68.33 +/- 1.87 72.40 +/- 3.96 63.25 +/- 2.17 75.00 +/- 3.44
2 80.92 +/- 1.87 74.33 +/- 2.23 71.50 +/- 1.26 77.20 +/- 3.80 67.75 +/- 2.29 75.33 +/- 2.84
3 80.92 +/- 2.21 79.33 +/- 1.54 75.67 +/- 1.12 78.00 +/- 3.74 74.75 +/- 0.85 82.67 +/- 3.36
4 82.92 +/- 2.03 83.17 +/- 1.45 78.83 +/- 1.56 88.60 +/- 3.46 79.00 +/- 1.68 88.67 +/- 2.72
5 83.58 +/- 0.82 87.00 +/- 1.29 83.33 +/- 1.38 92.20 +/- 2.54 88.25 +/- 2.14 95.50 +/- 1.78
6 83.00 +/- 0.74 88.00 +/- 1.13 87.00 +/- 1.59 - 93.00 +/- 2.12 97.83 +/- 2.06
  1. Mean hearing threshold values (+/- s.e.m., dB re 1 ╬╝Pa) of the six size groups of S. schoutedeni at each frequency tested. f = frequency; for exact size ranges see material and methods; group M was not tested at 6 kHz.