Table 1.

Hearing threshold values of C. carpio and P. fluviatilis measured under the different background noise conditions

Hearing threshold (dB re 1 μPa)
FishFrequency (kHz)Lab-noiseBWLNTSDR
C. carpio 0.176.2±0.6579.3±0.6185.0±0.4592.3±0.9597.8±0.87
0.366.3±0.9973.2±0.3173.7±1.4588 3±1.3896.8±1.30
0.560.3±0.4964.2±0.5467.3±0.8082.0±0.8695.2±2.70
0.857.0±0.4566.0±0.6868.8±0.6589.2±0.91105.8±0.48
1.057.3±0.6166.7±0.6769.2±0.6587.8±0.83106.2±0.54
2.081.8±0.5490.0±0.6888.0±0.86102.5±1.18118.5±0.96
3.099.7±0.71104.5±1.12108.8±0.54113.3±0.56122.0±1.00
4.0112.2±0.65114.0±0.52114.7±0.33120.2±0.91123.3±0.76
P. fluviatilis 0.187.7±0.4289.5±0.3493.8±0.6596.5±0.86100.2±0.87
0.281.7±0.5688.2±1.4986.2±0.9588.2±1.4992.7±1.28
0.383.7±0.3088.0±1.0787.8±0.9887.5±1.1891.2±0.91
0.5100.0±0.37100.7±0.71104.2±0.91102.0±1.10105.2±0.79
0.8106.3±0.80112.7±1.12111.5±0.96111.3±0.67114.8±0.79
1.0110.2±0.87114.0±0.63112.0±1.03116.5±1.43118.7±0.99
  • Lab-noise, baseline audiogram; BW, backwater; DR, Danube River; LN, Lake Neusiedl; TS, Triesting stream.

    Values are means ± s.e.m. (N=6).