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Great ears: Low-frequency sensitivity correlates in land and marine Leviathans
Ketten, D.R.; Arruda, J.; Cramer, S.; Yamato, M. (2016). Great ears: Low-frequency sensitivity correlates in land and marine Leviathans, in: Popper, A.N. et al. (Ed.) The effects of noise on aquatic life II. Advances in Experimental Medicine and Biology, 875: pp. 529-538. http://hdl.handle.net/10.1007/978-1-4939-2981-8_64
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; e-ISSN 2214-8019, more
Peer reviewed article  

Available in  Authors 

Keywords
    Frequency > Low frequency
    Hearing
    Impacts
    Whales
Author keywords
    Low frequency; Hearing; Whales; Impacts

Authors  Top 
  • Ketten, D.R.
  • Arruda, J.
  • Cramer, S.
  • Yamato, M.

Abstract
    Like elephants, baleen whales produce low-frequency (LF) and even infrasonic (IF) signals, suggesting they may be particularly susceptible to underwater anthropogenic sound impacts. Analyses of computerized tomography scans and histologies of the ears in five baleen whale and two elephant species revealed that LF thresholds correlate with basilar membrane thickness/width and cochlear radii ratios. These factors are consistent with high-mass, low-stiffness membranes and broad spiral curvatures, suggesting that Mysticeti and Proboscidea evolved common inner ear adaptations over similar time scales for processing IF/LF sounds despite operating in different media.

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