Mean hearing thresholds under different noise conditions and threshold shifts (with the baseline audiogram as reference) of the Lusitanian toadfish
| . | Baseline . | . | Ambient . | . | . | Ship . | . | . | |||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Frequency (Hz) . | Hearing threshold (dB re. 1 μPa) . | . | Hearing threshold (dB re. 1 μPa) . | . | Threshold shift (dB) . | Hearing threshold (dB re. 1 μPa) . | . | Threshold shift (dB) . | |||||
| 50 | 76.77 | +1.96 | 105.97 | +1.54 | 29.2 | 112.65 | +1.68 | 35.88 | |||||
| -2.53 | -1.87 | -2.08 | |||||||||||
| 100 | 92.59 | +1.03 | 102.56 | +0.80 | 9.97 | 114.73 | +0.89 | 22.14 | |||||
| -1.16 | -0.88 | -1.00 | |||||||||||
| 200 | 98.29 | +0.70 | 101.61 | +1.91 | 3.32 | 114.44 | +1.70 | 16.15 | |||||
| -0.77 | -2.46 | -2.11 | |||||||||||
| 300 | 102.01 | +1.11 | 102.82 | +2.02 | 0.81 | 113.90 | +1.07 | 11.89 | |||||
| -1.28 | -2.63 | -1.23 | |||||||||||
| 500 | 110.54 | +1.58 | 110.57 | +0.86 | 0.03 | 118.12 | +1.51 | 7.58 | |||||
| -1.93 | -0.96 | -1.83 | |||||||||||
| 800 | 115.86 | +1.75 | 116.99 | +1.88 | 1.13 | 125.33 | +1.33 | 9.47 | |||||
| -2.19 | -2.40 | -1.58 | |||||||||||
| 1000 | 124.16 | +1.81 | 119.84 | +0.79 | -4.32 | 127.36 | +1.31 | 3.20 | |||||
| -2.28 | -0.87 | -1.54 | |||||||||||
| . | Baseline . | . | Ambient . | . | . | Ship . | . | . | |||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Frequency (Hz) . | Hearing threshold (dB re. 1 μPa) . | . | Hearing threshold (dB re. 1 μPa) . | . | Threshold shift (dB) . | Hearing threshold (dB re. 1 μPa) . | . | Threshold shift (dB) . | |||||
| 50 | 76.77 | +1.96 | 105.97 | +1.54 | 29.2 | 112.65 | +1.68 | 35.88 | |||||
| -2.53 | -1.87 | -2.08 | |||||||||||
| 100 | 92.59 | +1.03 | 102.56 | +0.80 | 9.97 | 114.73 | +0.89 | 22.14 | |||||
| -1.16 | -0.88 | -1.00 | |||||||||||
| 200 | 98.29 | +0.70 | 101.61 | +1.91 | 3.32 | 114.44 | +1.70 | 16.15 | |||||
| -0.77 | -2.46 | -2.11 | |||||||||||
| 300 | 102.01 | +1.11 | 102.82 | +2.02 | 0.81 | 113.90 | +1.07 | 11.89 | |||||
| -1.28 | -2.63 | -1.23 | |||||||||||
| 500 | 110.54 | +1.58 | 110.57 | +0.86 | 0.03 | 118.12 | +1.51 | 7.58 | |||||
| -1.93 | -0.96 | -1.83 | |||||||||||
| 800 | 115.86 | +1.75 | 116.99 | +1.88 | 1.13 | 125.33 | +1.33 | 9.47 | |||||
| -2.19 | -2.40 | -1.58 | |||||||||||
| 1000 | 124.16 | +1.81 | 119.84 | +0.79 | -4.32 | 127.36 | +1.31 | 3.20 | |||||
| -2.28 | -0.87 | -1.54 | |||||||||||
Threshold hearing values are means ± s.e.m.; N=9, baseline; N=6, ambient and ship noise audiograms.