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Full-Text Articles in Marine Biology
Hearing Loss In Stranded Odontocete Dolphins And Whales, David Mann, Mandy Hill-Cook, Charles Manire, Danielle Greenhow, Eric Montie, Jessica Powell, Randall Wells, Gordon Bauer, Petra Cunningham-Smith, Robert Lingenfelser, Robert Digiovanni, Abigale Stone, Micah Brodsky, Robert Stevens, George Kieffer, Paul Hoetjes
Hearing Loss In Stranded Odontocete Dolphins And Whales, David Mann, Mandy Hill-Cook, Charles Manire, Danielle Greenhow, Eric Montie, Jessica Powell, Randall Wells, Gordon Bauer, Petra Cunningham-Smith, Robert Lingenfelser, Robert Digiovanni, Abigale Stone, Micah Brodsky, Robert Stevens, George Kieffer, Paul Hoetjes
Biology Faculty Publications and Presentations
The causes of dolphin and whale stranding can often be difficult to determine. Because toothed whales rely on echolocation for orientation and feeding, hearing deficits could lead to stranding. We report on the results of auditory evoked potential measurements from eight species of odontocete cetaceans that were found stranded or severely entangled in fishing gear during the period 2004 through 2009. Approximately 57% of the bottlenose dolphins and 36% of the rough-toothed dolphins had significant hearing deficits with a reduction in sensitivity equivalent to severe (70-90 dB) or profound (>90 dB) hearing loss in humans. The only stranded short-finned …