Ketten, D. R.
, A. T. Mooney
, R. C. Williams
, K. Matassa
, K. Patchett
, J. J. Arruda
, and S. R. Cramer
"Hearing Loss in Harbor Seals: Differential Diagnoses of Conductive and Sensorineural Losses via Auditory Evoked Potentials (AEP), Otoacoustic Emissions (OAE), and Computerized Tomography (CT)
19th Biennial Conference on the Biology of Marine Mammals, Tampa, FL, Society for Marine Mammology, pp. 156, 11/2011.
Abstract.pdf (format PDF / 143 KB)
As concerns for noise impacts continue, more species and individuals are being tested to determine hearing ranges and peak sensitivities. In employing these results, it must be considered that data, particularly from stranded wild animals, older individuals, or high noise areas, may reflect abnormal hearing. Case studies demonstrate pinnipeds sustain a wide range of conditions that may impair hearing. Approximately 20 % of stranded seals have ear infections which if undetected and untreated may lead to septicemia.