What question did this study set out to answer?

Establish baseline aerial audiograms across a broad frequency range in long-nosed fur seals to assess auditory sensitivity and inform coastal noise management.

August 16, 2026ConservationOpen Access

Aerial Audiograms of Two Long-Nosed Fur Seals (Arctocephalus forsteri)

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Authors

CEChristine ErbeCurtin University AGAdrienna van GoghTaronga Conservation Society Australia EKElysia KriekTaronga Conservation Society Australia

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Implication

Behavioral psychoacoustic testing reveals peak airborne hearing sensitivity at 3.2 kHz in long-nosed fur seals, highlighting essential thresholds for environmental noise regulation.

Key Points

Establish baseline aerial audiograms across a broad frequency range in long-nosed fur seals to assess auditory sensitivity and inform coastal noise management.
Tested airborne hearing thresholds between 100 Hz and 20 kHz using a conditioned-response behavioral paradigm in an anechoic chamber (N=2).
Compared individual hearing thresholds against spectra of common terrestrial noises and existing audiogram data for other fur seal species.
Both fur seals demonstrated peak aerial sensitivity at 3.2 kHz, with thresholds measuring 7 and 12 dB re 20 µPa.
The younger female demonstrated greater sensitivity at higher frequencies, while overall audiogram shapes matched profiles observed in Northern fur seals.

Cite This Study

Erbe et al. (2026) studied this question.

synapsesocial.com/papers/6a817a21f2fb91fc834adc0a https://doi.org/10.3390/conservation6030099

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August 16, 2026ConservationOpen Access

Aerial Audiograms of Two Long-Nosed Fur Seals (Arctocephalus forsteri)

View Full Paper

Ask AI

Bookmark

Authors

CEChristine ErbeCurtin University AGAdrienna van GoghTaronga Conservation Society Australia EKElysia KriekTaronga Conservation Society Australia

Discussion

Member takes

Implication

Behavioral psychoacoustic testing reveals peak airborne hearing sensitivity at 3.2 kHz in long-nosed fur seals, highlighting essential thresholds for environmental noise regulation.

Key Points

Establish baseline aerial audiograms across a broad frequency range in long-nosed fur seals to assess auditory sensitivity and inform coastal noise management.
Tested airborne hearing thresholds between 100 Hz and 20 kHz using a conditioned-response behavioral paradigm in an anechoic chamber (N=2).
Compared individual hearing thresholds against spectra of common terrestrial noises and existing audiogram data for other fur seal species.
Both fur seals demonstrated peak aerial sensitivity at 3.2 kHz, with thresholds measuring 7 and 12 dB re 20 µPa.
The younger female demonstrated greater sensitivity at higher frequencies, while overall audiogram shapes matched profiles observed in Northern fur seals.

Cite This Study

Erbe et al. (2026) studied this question.

synapsesocial.com/papers/6a817a21f2fb91fc834adc0a https://doi.org/10.3390/conservation6030099

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