The hearing sensitivity of a 2-yr-old male harbor porpoise was measured using a standard psycho-acoustic technique under low ambient noise conditions. Auditory sensitivity was measured for narrow-band 1 s sweeps (center frequencies: 0.125–150 kHz). The audiogram was U-shaped; range of best hearing (within 10 dB of maximum sensitivity) was from 13 to ∼140 kHz. Maximum sensitivity (threshold: ∼39 dB re 1 μPa) occurred at 125 kHz at the peak frequency of echolocation pulses produced by harbor porpoises. Reduced sensitivity occurred at 32 and 63 kHz. Sensitivity fell by ∼10 dB per octave below 16 kHz and declined sharply above 125 kHz. Apart from this individual's ca. 10 dB higher sensitivity at 0.250 kHz, ca. 10 dB lower sensitivity at 32 kHz, and ca. 59 dB lower sensitivity at 150 kHz, his audiogram is similar to that of two harbor porpoises tested previously with a similar psycho-acoustic technique.

1.
Andersen
,
S.
(
1970
). “
Auditory sensitivity of the harbour porpoise (Phocoena phocoena)
,” in
Investigations on Cetacea
, edited by
G.
Pilleri
(
Institute for Brain Research
,
Bern
), Vol.
2
, pp.
255
259
.
2.
ASCOBANS
(
2011
). “
Sixteenth compilation of annual national reports to ASCOBANS
,” http://www.ascobans.org/ (Last viewed 28 September 2015).
3.
Bibikov
,
N. G.
(
1992
). “
Auditory brainstem responses in the harbor porpoise (Phocoena phocoena)
,” in
Marine Mammal Sensory Systems
, edited by
J. A.
Thomas
,
R. A.
Kastelein
, and
A. Ya.
Supin
(
Plenum
,
New York
), pp.
197
211
.
4.
Bohlen
,
P.
,
Dylla
,
M.
,
Timms
,
C.
, and
Ramachandran
,
R.
(
2014
). “
Detection of modulated tones in modulated noise by non-human primates
,”
J. Assoc. Res. Otolaryngol.
15
,
801
821
.
5.
Branstetter
,
B. K.
,
Trickey
,
J. S.
,
Black
,
A.
,
Aihara
,
H.
, and
Finneran
,
J. J.
(
2013
). “
Auditory masking patterns in bottlenose dolphins (Tursiops truncates) with natural, anthropogenic, and synthesized noise
,”
J. Acoust. Soc. Am.
133
,
1811
1818
.
6.
Cornsweet
,
T. N.
(
1962
). “
The staircase method in psychophysics
,”
Am. J. Psychol.
75
,
485
491
.
7.
David
,
A.
(
2011
). “
Underwater environmental assessment on marine mammals and fish by high power anthropogenic radiated sound
,”
Acoustics
27
,
1
8
.
8.
Finneran
,
J. J.
, and
Houser
,
D. S.
(
2006
). “
Comparison of in-air evoked potential and underwater behavioral hearing thresholds in four bottlenose dolphins (Tursiops truncatus)
,”
J. Acoust. Soc. Am.
119
,
3181
3192
.
9.
Finneran
,
J. J.
, and
Schlundt
,
C. E.
(
2007
). “
Underwater sound pressure variation and bottlenose dolphin (Tursiops truncatus) hearing thresholds in a small pool
,”
J. Acoust. Soc. Am.
122
,
606
614
.
10.
Gaskin
,
D. E.
(
1992
). “
Status of the harbour porpoise, Phocoena phocoena, in Canada
,”
Can. Field-Natural.
106
,
36
54
.
11.
Kamminga
,
C.
, and
Wiersma
,
H.
(
1981
). “
Investigations of cetacean sonar. II. Acoustical similarities and differences in odontocete sonar signals
,”
Aquat. Mamm.
8
,
41
62
.
12.
Kastelein
,
R. A.
,
Bunskoek
,
P.
,
Hagedoorn
,
M.
,
Au
,
W. W. L.
, and
de Haan
,
D.
(
2002
). “
Audiogram of a harbor porpoise (Phocoena phocoena) measured with narrow-band frequency-modulated signals
,”
J. Acoust. Soc. Am.
112
,
334
344
.
40.
Kastelein
,
R. A.
,
de Haan
,
D.
, and
Verboom
,
W. C.
(
2007
). “
The influence of signal parameters on the sound source localization ability of a harbor porpoise (Phocoena phocoena)
,”
J. Acoust. Soc. Am.
122
,
1238
1248
.
13.
Kastelein
,
R. A.
,
Gransier
,
R.
,
Hoek
,
L.
, and
de Jong
,
C. A. F.
(
2012a
). “
The hearing threshold of a harbor porpoise (Phocoena phocoena) for impulsive sounds (L)
,”
J. Acoust. Soc. Am.
132
,
607
610
.
14.
Kastelein
,
R. A.
,
Gransier
,
R.
,
Hoek
,
L.
, and
Olthuis
,
J.
(
2012b
). “
Temporary threshold shifts and recovery in a harbor porpoise (Phocoena phocoena) after octave-band noise at 4 kHz
,”
J. Acoust. Soc. Am.
132
,
3525
3537
.
15.
Kastelein
,
R. A.
,
Gransier
,
R.
,
Hoek
,
L.
, and
Rambags
,
M.
(
2013a
). “
Hearing frequency thresholds of a harbor porpoise (Phocoena phocoena) temporarily affected by a continuous 1.5 kHz tone
,”
J. Acoust. Soc. Am.
134
,
2286
2292
.
16.
Kastelein
,
R. A.
,
Gransier
,
R.
,
Marijt
,
M. A. T.
, and
Hoek
,
L.
(
2015a
). “
Hearing frequencies of a harbor porpoise (Phocoena phocoena) temporarily affected by played back offshore pile driving sounds
,”
J. Acoust. Soc. Am.
137
,
556
564
.
17.
Kastelein
,
R. A.
,
Gransier
,
R.
,
Schop
,
J.
, and
Hoek
,
L.
(
2015b
). “
Effect of intermittent and continuous 6-7 kHz sonar sweep exposures on harbor porpoise (Phocoena phocoena) hearing
,”
J. Acoust. Soc. Am.
137
,
1623
1633
.
18.
Kastelein
,
R. A.
,
Hoek
,
L.
, and
de Jong
,
C. A. F.
(
2011a
). “
Hearing thresholds of a harbor porpoise (Phocoena phocoena) for sweeps (1–2 kHz and 6–7 kHz bands) mimicking naval sonar signals
,”
J. Acoust. Soc. Am.
129
,
3393
3399
.
19.
Kastelein
,
R. A.
,
Hoek
,
L.
, and
de Jong
,
C. A. F.
(
2011b
). “
Hearing thresholds of a harbor porpoise (Phocoena phocoena) for helicopter dipping sonar signals (1.43–1.33 kHz) (L)
,”
J. Acoust. Soc. Am.
130
,
679
682
.
20.
Kastelein
,
R. A.
,
Hoek
,
L.
,
de Jong
,
C. A. F.
, and
Wensveen
,
P. J.
(
2010
). “
The effect of signal duration on the underwater detection thresholds of a harbor porpoise (Phocoena phocoena) for single frequency-modulated tonal signals between 0.25 and 160 kHz
,”
J. Acoust. Soc. Am.
128
,
3211
3222
.
21.
Kastelein
,
R. A.
,
Hoek
,
L.
,
Gransier
,
R.
, and
de Jong
,
C. A. F.
(
2013b
). “
Hearing thresholds of a harbor porpoise (Phocoena phocoena) for playbacks of multiple pile driving strike sounds
,”
J. Acoust. Soc. Am.
134
,
2302
2306
.
22.
Kastelein
,
R. A.
,
Hoek
,
L.
,
Gransier
,
R.
,
Rambags
,
M.
, and
Claeys
,
N.
(
2014a
). “
Effect of level, duration, and inter-pulse interval of 1–2 kHz sonar signal exposures on harbor porpoise hearing
,”
J. Acoust. Soc. Am.
136
,
412
422
.
41.
Kastelein
,
R. A.
,
Janssen
,
M.
,
Verboom
,
W. C.
, and
de Haan
,
D.
(
2005
). “
Receiving beam patterns in the horizontal plane of a harbor porpoise (Phocoena phocoena)
,”
J. Acoust. Soc. Am.
118
,
1172
1179
.
23.
Kastelein
,
R. A.
,
Schop
,
J.
,
Gransier
,
R.
, and
Hoek
,
L.
(
2014b
). “
Frequency of greatest temporary hearing threshold shift in harbor porpoises (Phocoena phocoena) depends on the noise level
,”
J. Acoust. Soc. Am.
136
,
1410
1418
.
24.
Kastelein
,
R. A.
,
Steen
,
N.
,
Gransier
,
R.
,
Wensveen
,
P. J.
, and
de Jong
,
C. A. F.
(
2012c
). “
Threshold received SPLs of single 1–2 kHz and 6–7 kHz up-sweeps and down-sweeps causing startle responses in a harbor porpoise (Phocoena phocoena)
,”
J. Acoust. Soc. Am.
131
,
2325
2333
.
25.
Kastelein
,
R. A.
, and
Wensveen
,
P. J.
(
2008
). “
Effect of two levels of masking noise on hearing threshold of a harbor porpoise (Phocoena phocoena) for a 4.0 kHz signal
,”
Aquat. Mamm.
34
,
420
425
.
26.
Kastelein
,
R. A.
,
Wensveen
,
P. J.
,
Hoek
,
L.
,
Au
,
W. W. L.
,
Terhune
,
J. M.
, and
de Jong
,
C. A. F.
(
2009
). “
Critical ratios in harbor porpoises (Phocoena phocoena) for tonal signals between 0.315 and 150 kHz in random Gaussian white noise
,”
J. Acoust. Soc. Am.
126
,
1588
1597
.
27.
Ketten
,
D. R.
(
2000
). “
Cetacean ears
,” in
Hearing by Whales and Dolphins
, edited by
W. W. L.
Au
,
A. N.
Popper
, and
R. R.
Fay
(
Springer
,
New York
), pp.
43
108
.
28.
Levitt
,
H.
(
1971
). “
Transformed up-down methods in psychoacoustics
,”
J. Acoust. Soc. Am.
49
,
467
477
.
29.
Madsen
,
P. T.
(
2005
). “
Marine mammals and noise: Problems with root mean square sound pressure levels for transients
,”
J. Acoust. Soc. Am.
117
,
3952
3957
.
30.
Mellen
,
R. H.
(
1952
). “
The thermal-noise limit in the detection of underwater acoustic signals
,”
J. Acoust. Soc. Am.
24
,
478
480
.
31.
Møhl
,
B.
, and
Andersen
,
S.
(
1973
). “
Echolocation: High-frequency component in the click of the harbour porpoise (Phocoena ph. L.)
,”
J. Acoust. Soc. Am.
53
,
1368
1372
.
32.
Mooney
,
T. A.
,
Yamato
,
M.
, and
Branstetter
,
B. K.
(
2012
). “
Hearing in cetaceans: From natural history to experimental biology
,”
Adv. Mar. Biol.
63
,
197
246
.
33.
NOAA (
2015
). “
Guidance for assessing the 15 effects of anthropogenic sound on 16 marine mammal hearing. Underwater acoustic threshold levels for onset of 19 permanent and temporary threshold shifts
” (U.S. Department of Commerce, Washington, DC),
180
pp.
34.
Popov
,
V. V.
,
Ladygina
,
T. F.
, and
Supin
,
A. Ya.
(
1986
). “
Evoked potentials of the auditory cortex of the porpoise (Phocoena phocoena)
,”
J. Comp. Physiol. A
158
,
705
711
.
35.
Robinson
,
D. E.
, and
Watson
,
C. S.
(
1973
). “
Psychophysical methods in modern Psychoacoustics
,” in
Foundations of Modern Auditory Theory
, edited by
J. V.
Tobias
(
Academic
,
New York
), Vol.
2
, pp.
99
131
.
36.
Southall
,
B. L.
,
Bowles
,
A. E.
,
Ellison
,
W. T.
,
Finneran
,
J. J.
,
Gentry
,
R. L.
,
Greene
,
C. R.
, Jr.
,
Kastak
,
D.
,
Ketten
,
D. R.
,
Miller
,
J. H.
,
Nachtigall
,
P. E.
,
Richardson
,
W. J.
,
Thomas
,
J. A.
, and
Tyack
,
P. L.
(
2007
). “
Marine mammal noise exposure criteria: Initial scientific recommendations
,”
Aquat. Mamm.
33
,
411
521
.
37.
Supin
,
A. Ya.
,
Popov
,
V. V.
, and
Klishin
,
V. O.
(
1993
). “
ABR frequency tuning curves in dolphins
,”
J. Comp. Physiol. A
173
,
649
656
.
38.
Wensveen
,
P. J.
,
Huijser
,
L. A. E.
,
Hoek
,
L.
, and
Kastelein
,
R. A.
(
2014
). “
Equal latency contours and auditory weighting functions for the harbour porpoise (Phocoena phocoena)
,”
J. Exp. Biol.
217
,
1
11
.
39.
Wenz
,
G. M.
(
1962
). “
Acoustic ambient noise in the ocean: Spectra and sources
,”
J. Acoust. Soc. Am.
34
,
1936
1956
.
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