Underwater audiogram of the grey seal (Halichoerus grypus).
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| Autori principali: | , , , , |
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| Natura: | Artículo científico |
| Lingua: | en |
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Biology open
2025
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| _version_ | 1868266167297114114 |
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| author | Ruser, Andreas Anderson Hansen, Kirstin Wahlberg, Magnus Schaffeld, Tobias Siebert, Ursula |
| author_facet | Ruser, Andreas Anderson Hansen, Kirstin Wahlberg, Magnus Schaffeld, Tobias Siebert, Ursula Ruser, Andreas Anderson Hansen, Kirstin Wahlberg, Magnus Schaffeld, Tobias Siebert, Ursula |
| collection | PubMed - marine biology |
| contents | Underwater audiogram of the grey seal (Halichoerus grypus). Ruser, Andreas Anderson Hansen, Kirstin Wahlberg, Magnus Schaffeld, Tobias Siebert, Ursula Animals Seals, Earless Hearing Auditory Threshold Audiometry Noise The hearing sensitivity of two grey seals (Halichoerus grypus) was measured using a psychophysical staircase method from 0.125 to 64 kHz. Both animals had best hearing sensitivity at 4 kHz (43-44 dB re 1 µPa). Below 4 kHz, hearing thresholds differed. These first underwater audiograms using psychophysical methods demonstrate that high-frequency hearing in grey seals is comparable to other phocids. However, they show better sensitivity below 8 kHz, indicating that low-frequency hearing may play a more important role in this species, potentially increasing its vulnerability to anthropogenic noise. Notably, hearing thresholds at low frequencies were lower than predicted by the standard audiogram used to generate phocid frequency weighting function, which is currently used to assess the impact of anthropogenic sound on marine mammal hearing. These functions may not adequately represent grey seal sensitivity at low frequencies. Our results may, if corroborated by further audiograms, motivate modifications of the phocid standard audiogram. |
| format | Artículo científico |
| id | pubmed_40789159 |
| institution | PubMed |
| language | en |
| publishDate | 2025 |
| publisher | Biology open |
| record_format | pubmed |
| spellingShingle | Underwater audiogram of the grey seal (Halichoerus grypus). Ruser, Andreas Anderson Hansen, Kirstin Wahlberg, Magnus Schaffeld, Tobias Siebert, Ursula Animals Seals, Earless Hearing Auditory Threshold Audiometry Noise Underwater audiogram of the grey seal (Halichoerus grypus). Ruser, Andreas Anderson Hansen, Kirstin Wahlberg, Magnus Schaffeld, Tobias Siebert, Ursula Animals Seals, Earless Hearing Auditory Threshold Audiometry Noise The hearing sensitivity of two grey seals (Halichoerus grypus) was measured using a psychophysical staircase method from 0.125 to 64 kHz. Both animals had best hearing sensitivity at 4 kHz (43-44 dB re 1 µPa). Below 4 kHz, hearing thresholds differed. These first underwater audiograms using psychophysical methods demonstrate that high-frequency hearing in grey seals is comparable to other phocids. However, they show better sensitivity below 8 kHz, indicating that low-frequency hearing may play a more important role in this species, potentially increasing its vulnerability to anthropogenic noise. Notably, hearing thresholds at low frequencies were lower than predicted by the standard audiogram used to generate phocid frequency weighting function, which is currently used to assess the impact of anthropogenic sound on marine mammal hearing. These functions may not adequately represent grey seal sensitivity at low frequencies. Our results may, if corroborated by further audiograms, motivate modifications of the phocid standard audiogram. |
| title | Underwater audiogram of the grey seal (Halichoerus grypus). |
| topic | Animals Seals, Earless Hearing Auditory Threshold Audiometry Noise |
| url | https://pubmed.ncbi.nlm.nih.gov/40789159/ |