Underwater Audiogram of a False Killer Whale (Pseudorca crassidens)
Underwater audiograms are available for only a few odontocete species. A false killer whale (Pseudorca crassidens) was trained at Sea Life Park in Oahu, Hawaii for an underwater hearing test using a go/no-go response paradigm. Over 6-month period, auditory thresholds from 2-115 kHz were measured usi...
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ftdtic:ADA208080 2023-05-15T15:41:53+02:00 Underwater Audiogram of a False Killer Whale (Pseudorca crassidens) Thomas, Jeanette Chun, Norman Au, Whitlow Pugh, Kiana NAVAL OCEAN SYSTEMS CENTER SAN DIEGO CA 1988-09 text/html http://www.dtic.mil/docs/citations/ADA208080 http://oai.dtic.mil/oai/oai?&verb=getRecord&metadataPrefix=html&identifier=ADA208080 en eng http://www.dtic.mil/docs/citations/ADA208080 Approved for public release; distribution is unlimited. DTIC AND NTIS Biology Biological Oceanography *WHALES PORPOISES REPRINTS PEAK VALUES SENSITIVITY PULSES RESPONSE MARINE BIOLOGY PSYCHOMETRICS HARBORS HAWAII HEARING ECHO RANGING UNDERWATER AMAZON RIVER MARINE BIOLOGICAL NOISE AUDITORY SIGNALS AUDIO TONES AUDIOMETRY DOLPHINS(MAMMALS) TEST AND EVALUATION FREQUENCY *FALSE KILLER WHALES *AUDIOGRAMS *PSEUDORCA CRASSIDENS PE62435N WUDN688674 Text 1988 ftdtic 2016-02-23T05:42:51Z Underwater audiograms are available for only a few odontocete species. A false killer whale (Pseudorca crassidens) was trained at Sea Life Park in Oahu, Hawaii for an underwater hearing test using a go/no-go response paradigm. Over 6-month period, auditory thresholds from 2-115 kHz were measured using an up/down staircase psychometric technique. The resulting audiogram showed hearing sensitivities below 64 kHz similar to those of belugas (Delphinapterus leucas) and Atlantic bottlenosed dolphins (Tursiops truncatus). Above 64 KHz, this Pseudorca had a rapid decrease in sensitivity of about 150 dB per octave. A similar decrease in sensitivity occurs at 32 kHz in the killer whale, at 50 kHz in the Amazon River dolphin, at 120 kHz in the beluga, at 140 khz in the bottlenosed dolphin, and at 140 kHz in the harbor porpoise. The most sensitive range of hearing was from 16-64 kHz (a range 10 dB from the maximum sensitivity). This range corresponds with the peak frequency of echolocation pulses recorded from captive Pseudorca. Keywords: Reprints, Marine biology. Pub. in Jnl. of the Acoustical Society of America, v84 n3 p936-940 Sep 1988 Text Beluga Beluga* Delphinapterus leucas Killer Whale Defense Technical Information Center: DTIC Technical Reports database |
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Open Polar |
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Defense Technical Information Center: DTIC Technical Reports database |
op_collection_id |
ftdtic |
language |
English |
topic |
Biology Biological Oceanography *WHALES PORPOISES REPRINTS PEAK VALUES SENSITIVITY PULSES RESPONSE MARINE BIOLOGY PSYCHOMETRICS HARBORS HAWAII HEARING ECHO RANGING UNDERWATER AMAZON RIVER MARINE BIOLOGICAL NOISE AUDITORY SIGNALS AUDIO TONES AUDIOMETRY DOLPHINS(MAMMALS) TEST AND EVALUATION FREQUENCY *FALSE KILLER WHALES *AUDIOGRAMS *PSEUDORCA CRASSIDENS PE62435N WUDN688674 |
spellingShingle |
Biology Biological Oceanography *WHALES PORPOISES REPRINTS PEAK VALUES SENSITIVITY PULSES RESPONSE MARINE BIOLOGY PSYCHOMETRICS HARBORS HAWAII HEARING ECHO RANGING UNDERWATER AMAZON RIVER MARINE BIOLOGICAL NOISE AUDITORY SIGNALS AUDIO TONES AUDIOMETRY DOLPHINS(MAMMALS) TEST AND EVALUATION FREQUENCY *FALSE KILLER WHALES *AUDIOGRAMS *PSEUDORCA CRASSIDENS PE62435N WUDN688674 Thomas, Jeanette Chun, Norman Au, Whitlow Pugh, Kiana Underwater Audiogram of a False Killer Whale (Pseudorca crassidens) |
topic_facet |
Biology Biological Oceanography *WHALES PORPOISES REPRINTS PEAK VALUES SENSITIVITY PULSES RESPONSE MARINE BIOLOGY PSYCHOMETRICS HARBORS HAWAII HEARING ECHO RANGING UNDERWATER AMAZON RIVER MARINE BIOLOGICAL NOISE AUDITORY SIGNALS AUDIO TONES AUDIOMETRY DOLPHINS(MAMMALS) TEST AND EVALUATION FREQUENCY *FALSE KILLER WHALES *AUDIOGRAMS *PSEUDORCA CRASSIDENS PE62435N WUDN688674 |
description |
Underwater audiograms are available for only a few odontocete species. A false killer whale (Pseudorca crassidens) was trained at Sea Life Park in Oahu, Hawaii for an underwater hearing test using a go/no-go response paradigm. Over 6-month period, auditory thresholds from 2-115 kHz were measured using an up/down staircase psychometric technique. The resulting audiogram showed hearing sensitivities below 64 kHz similar to those of belugas (Delphinapterus leucas) and Atlantic bottlenosed dolphins (Tursiops truncatus). Above 64 KHz, this Pseudorca had a rapid decrease in sensitivity of about 150 dB per octave. A similar decrease in sensitivity occurs at 32 kHz in the killer whale, at 50 kHz in the Amazon River dolphin, at 120 kHz in the beluga, at 140 khz in the bottlenosed dolphin, and at 140 kHz in the harbor porpoise. The most sensitive range of hearing was from 16-64 kHz (a range 10 dB from the maximum sensitivity). This range corresponds with the peak frequency of echolocation pulses recorded from captive Pseudorca. Keywords: Reprints, Marine biology. Pub. in Jnl. of the Acoustical Society of America, v84 n3 p936-940 Sep 1988 |
author2 |
NAVAL OCEAN SYSTEMS CENTER SAN DIEGO CA |
format |
Text |
author |
Thomas, Jeanette Chun, Norman Au, Whitlow Pugh, Kiana |
author_facet |
Thomas, Jeanette Chun, Norman Au, Whitlow Pugh, Kiana |
author_sort |
Thomas, Jeanette |
title |
Underwater Audiogram of a False Killer Whale (Pseudorca crassidens) |
title_short |
Underwater Audiogram of a False Killer Whale (Pseudorca crassidens) |
title_full |
Underwater Audiogram of a False Killer Whale (Pseudorca crassidens) |
title_fullStr |
Underwater Audiogram of a False Killer Whale (Pseudorca crassidens) |
title_full_unstemmed |
Underwater Audiogram of a False Killer Whale (Pseudorca crassidens) |
title_sort |
underwater audiogram of a false killer whale (pseudorca crassidens) |
publishDate |
1988 |
url |
http://www.dtic.mil/docs/citations/ADA208080 http://oai.dtic.mil/oai/oai?&verb=getRecord&metadataPrefix=html&identifier=ADA208080 |
genre |
Beluga Beluga* Delphinapterus leucas Killer Whale |
genre_facet |
Beluga Beluga* Delphinapterus leucas Killer Whale |
op_source |
DTIC AND NTIS |
op_relation |
http://www.dtic.mil/docs/citations/ADA208080 |
op_rights |
Approved for public release; distribution is unlimited. |
_version_ |
1766374758888243200 |