Hearing abilities and sound reception of broadband sounds in an adult Risso’s dolphin (Grampus griseus )

View/ Open
Date
2015-04Author
Mooney, T. Aran
Concept link
Yang, Wei-Cheng
Concept link
Yu, Hsin-Yi
Concept link
Ketten, Darlene R.
Concept link
Jen, I-Fan
Concept link
Metadata
Show full item recordCitable URI
https://hdl.handle.net/1912/7503As published
https://doi.org/10.1007/s00359-015-1011-xKeyword
Noise; Sensory biology; Bioacoustics; Temporal processing; Marine mammalAbstract
While odontocetes do not have an external pinna that guides sound to the middle ear, they
are considered to receive sound through specialized regions of the head and lower jaw. Yet
odontocetes differ in the shape of the lower jaw suggesting that hearing pathways may vary
between species, potentially influencing hearing directionality and noise impacts. This work
measured the audiogram and received sensitivity of a Risso’s dolphin (Grampus griseus) in an
effort to comparatively examine how this species receives sound. Jaw hearing thresholds were
lowest (most sensitive) at two locations along the anterior, midline region of the lower jaw (the
lower jaw tip and anterior part of the throat). Responses were similarly low along a more
posterior region of the lower mandible, considered the area of best hearing in bottlenose dolphins.
Left and right side differences were also noted suggesting possible left-right asymmetries in
sound reception or differences in ear sensitivities. The results indicate best hearing pathways
may vary between the Risso’s dolphin and other odontocetes measured. This animal received
sound well, supporting a proposed throat pathway. For Risso’s dolphins in particular, good
ventral hearing would support their acoustic ecology by facilitating echo-detection from their
proposed downward oriented echolocation beam.
Description
Author Posting. © The Author(s), 2015. This is the author's version of the work. It is posted here by permission of Springer for personal use, not for redistribution. The definitive version was published in Journal of Comparative Physiology A 201 (2015): 751-761, doi:10.1007/s00359-015-1011-x.
Collections
Suggested Citation
Preprint: Mooney, T. Aran, Yang, Wei-Cheng, Yu, Hsin-Yi, Ketten, Darlene R., Jen, I-Fan, "Hearing abilities and sound reception of broadband sounds in an adult Risso’s dolphin (Grampus griseus )", 2015-04, https://doi.org/10.1007/s00359-015-1011-x, https://hdl.handle.net/1912/7503Related items
Showing items related by title, author, creator and subject.
-
Distinctions in sound patterns of calls by killer whales (Orcinus Orca) from analysis of computer sound features
Watkins, William A.; Daher, Mary Ann; DiMarzio, Nancy A.; Reppucci, Gina (Woods Hole Oceanographic Institution, 1998-03)Calls of killer whales, Orcinus orca, were analyzed using computed sound features to classify sound patterns and identify call similarties. Calls were classified and separated according to the podfamily group within clans ... -
Differences between sound scattering by weakly scattering spheres and finite-length cylinders with applications to sound scattering by zooplankton
Stanton, Timothy K.; Wiebe, Peter H.; Chu, Dezhang (Acoustical Society of America, 1998-01)A modeling study was conducted to determine the conditions under which fluidlike zooplankton of the same volume but different shapes (spherical/cylindrical) have similar or dramatically different scattering properties. ... -
Seafloor character and sedimentary processes in eastern Long Island Sound and western Block Island Sound
Poppe, Lawrence J.; DiGiacomo-Cohen, M. L.; Smith, Shepard M.; Stewart, H. F.; Forfinski, N. A. (2005-07-26)Multibeam bathymetric data and seismic-reflection profiles collected in eastern Long Island and western Block Island Sounds reveal previously unrecognized glacial features and modern bedforms. Glacial features include ...