Table 1 Hearing thresholds of Piaractus brachypomus, Metynnis lippincottianus, Myloplus rubripinnis, Myleus schomburgkii, Serrasalmus elongatus, Serrasalmus spilopleura, Pygocentrus nattereri and Pygocentrus piraya.
From: Hearing capacities and morphology of the auditory system in Serrasalmidae (Teleostei: Otophysi)
Frequency (Hz) | Piaractus brachypomus | Metynnis lippincottianus | Myloplus rubripinnis | Myleus schomburgkii | Serrasalmus elongatus | Serrasalmus spilopleura | Pygocentrus nattereri | Pygocentrus piraya | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
M ± SD | N | M ± SD | N | M ± SD | N | M ± SD | N | M ± SD | N | M ± SD | N | M ± SD | N | M ± SD | N | |
50 | 96.5 ± 10 | 10 | 97.9 ± 9.7 | 10 | 94.0 ± 9.2 | 3 | 93 ± 4.5 | 8 | 100.2 ± 4.3 | 5 | 87.6 ± 3.2 | 7 | 97.1 ± 8.2 | 10 | 90.4 ± 4.6 | 5 |
150 | 94.6 ± 5.8 | 10 | 90.9 ± 3.5 | 10 | 97.2 ± 6.8 | 3 | 93 ± 4.2 | 8 | 86.2 ± 6.2 | 5 | 89.1 ± 3.2 | 7 | 84.7 ± 5.9 | 10 | 95.6 ± 12.4 | 5 |
300 | 104.2 ± 6.8 | 10 | 94.4 ± 4.1 | 10 | 91.3 ± 3.3 | 3 | 95.8 ± 7.4 | 8 | 94.2 ± 6.1 | 5 | 92.1 ± 6.4 | 7 | 82.7 ± 11.5 | 10 | 84.6 ± 7.9 | 5 |
600 | 90.4 ± 3.9 | 10 | 92.3 ± 5.9 | 10 | 84.0 ± 6.0 | 3 | 87.3 ± 2.1 | 8 | 85.2 ± 7 | 5 | 81.3 ± 4.5 | 7 | 79.3 ± 6.2 | 10 | 87.5 ± 4.8 | 5 |
900 | 108.5 ± 5.9 | 10 | 101.8 ± 8.7 | 10 | 92.3 ± 3.1 | 3 | 97 ± 3.7 | 8 | 90.4 ± 4.3 | 5 | 93.6 ± 4.1 | 7 | 89.3 ± 10.2 | 10 | 91.2 ± 11.1 | 5 |
1200 | 120 ± 4.2 | 10 | 103.3 ± 4.4 | 10 | 99.3 ± 1.2 | 3 | 100.3 ± 4.1 | 8 | 98.8 ± 5.6 | 5 | 96.4 ± 5.4 | 7 | 92.4 ± 4 | 10 | 105.4 ± 5.8 | 5 |
1500 | 115.6 ± 5.8 | 10 | 103.7 ± 4.5 | 10 | 98.0 ± 5.2 | 3 | 93.5 ± 4.8 | 8 | 95.6 ± 7 | 5 | 100.6 ± 5.4 | 7 | 93.4 ± 4.5 | 10 | 106.8 ± 5.2 | 5 |
1800 | 119.6 ± 5.4 | 10 | 113.3 ± 3.7 | 10 | 111.3 ± 3.2 | 3 | 102.8 ± 4.9 | 8 | 109.3 ± 4.4 | 5 | 112.6 ± 4.1 | 7 | 104.8 ± 9 | 10 | 108.4 ± 4.8 | 5 |
2100 | 122.3 ± 4.3 | 10 | 112.9 ± 4.7 | 10 | 142.0 ± 6.0 | 3 | 120.9 ± 7.7 | 8 | 113.4 ± 8.1 | 5 | 113.7 ± 6.7 | 7 | 108.2 ± 6.6 | 10 | 144.6 ± 10 | 5 |
2400 | 134.1 ± 4.1 | 7 | 131.1 ± 6.9 | 7 | 120.7 ± 1.2 | 3 | 113.5 ± 4.5 | 8 | 123 ± 7.1 | 5 | 111.9 ± 2.3 | 7 | 115.3 ± 4.7 | 10 | 122 ± 7.3 | 5 |
2700 | 117.9 ± 5.6 | 4 | 121.1 ± 2.4 | 8 | 116.7 ± 6.7 | 3 | 107.3 ± 2.8 | 8 | 117.6 ± 10.7 | 5 | 109.1 ± 4.1 | 7 | 106 ± 6.9 | 10 | 112.2 ± 8.8 | 5 |
3000 | 114.8 ± 7.2 | 8 | 115.7 ± 5.5 | 9 | 111.5 | 1 | 111.7 ± 3.6 | 8 | 118.4 ± 6.2 | 5 | 108.1 ± 4.7 | 7 | 106.4 ± 7.7 | 10 | 110.5 ± 4.9 | 2 |
3300 | 117.5 ± 7.8 | 2 | 116 ± 5.4 | 6 | — | — | 112.3 ± 3.8 | 8 | 122.4 ± 5 | 5 | 110.5 ± 4.5 | 7 | 110.7 ± 5.1 | 10 | — | — |
3600 | 120.5 | 1 | 118 ± 0 | 2 | — | — | 112 ± 1 | 5 | — | — | 113 ± 0 | 4 | 113.5 ± 3 | 4 | — | — |
