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In-air and underwater hearing in the Great cormorant (Phalacrocorax carbo sinensis)
Johansen, S.; Larsen, O.N.; Christensen-Dalsgaard, J.; Seidelin, L.; Huulvej, T.; Jensen, K.; Lunneryd, S.-G.; Boström, M.; Wahlberg, M. (2016). In-air and underwater hearing in the Great cormorant (Phalacrocorax carbo sinensis), in: Popper, A.N. et al. (Ed.) The effects of noise on aquatic life II. Advances in Experimental Medicine and Biology, 875: pp. 505-512. hdl.handle.net/10.1007/978-1-4939-2981-8_61
In: Popper, A.N.; Hawkins, A. (Ed.) (2016). The effects of noise on aquatic life II. Advances in Experimental Medicine and Biology, 875. Springer Science+Business Media, Inc: New York. ISBN 978-1-4939-2980-1. xxx, 1292 pp., more
In: Advances in Experimental Medicine and Biology. Springer: Berlin. ISSN 0065-2598, more
Peer reviewed article  

Available in  Authors 

Keywords
    Phalacrocorax carbo sinensis; Marine
Author keywords
    Underwater hearing; Psychophysical measurements; Auditory brainstem response; Playback

Authors  Top 
  • Johansen, S.
  • Larsen, O.N.
  • Christensen-Dalsgaard, J.
  • Seidelin, L.
  • Huulvej, T.
  • Jensen, K.
  • Lunneryd, S.-G.
  • Boström, M.
  • Wahlberg, M.

Abstract
    Hearing thresholds of a great cormorant (Phalacrocorax carbo) were measured in air and under water using psychophysics. The lowest thresholds were at 2 kHz (45 dB re 20 µPa root-mean-square [rms] in air and 79 dB re 1 µPa rms in water). Auditory brainstem response measurements on one anesthetized bird in air indicated an audiogram with a shape that resembled the one achieved by psychophysics. This study suggests that cormorants have rather poor in-air hearing abilities compared with other similar-size birds. The hearing capabilities in water are better than what would have been expected for a purely in-air adapted ear.

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