Please use this identifier to cite or link to this item:
|Title:||Possible age-related hearing loss (presbycusis) and corresponding change in echolocation parameters in a stranded Indo-Pacific humpback dolphin|
|Keywords:||Auditory evoked potential|
|Citation:||Li, S., Wang, D., Wang, K., Hoffmann-Kuhnt, M., Fernando, N., Taylor, E.A., Lin, W., Chen, J., Ng, T. (2013-11). Possible age-related hearing loss (presbycusis) and corresponding change in echolocation parameters in a stranded Indo-Pacific humpback dolphin. Journal of Experimental Biology 216 (22) : 4144-4153. ScholarBank@NUS Repository. https://doi.org/10.1242/jeb.091504|
|Abstract:||The hearing and echolocation clicks of a stranded Indo-Pacific humpback dolphin (Sousa chinensis) in Zhuhai, China, were studied. This animal had been repeatedly observed in the wild before it was stranded and its age was estimated to be ∼40years. The animal's hearing was measured using a non-invasive auditory evoked potential (AEP) method. Echolocation clicks produced by the dolphin were recorded when the animal was freely swimming in a 7.5m (width)×22m (length)×4.8m (structural depth) pool with a water depth of ∼2.5m. The hearing and echolocation clicks of the studied dolphin were compared with those of a conspecific younger individual, ∼13years of age. The results suggested that the cut-off frequency of the high-frequency hearing of the studied dolphin was ∼30-40kHz lower than that of the younger individual. The peak and centre frequencies of the clicks produced by the older dolphin were ∼16kHz lower than those of the clicks produced by the younger animal. Considering that the older dolphin was ∼40years old, its lower high-frequency hearing range with lower click peak and centre frequencies could probably be explained by age-related hearing loss (presbycusis). © 2013. Published by The Company of Biologists Ltd.|
|Source Title:||Journal of Experimental Biology|
|Appears in Collections:||Staff Publications|
Show full item record
Files in This Item:
There are no files associated with this item.
checked on Jun 14, 2018
WEB OF SCIENCETM
checked on May 7, 2018
checked on Feb 25, 2018
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.