Beaked whale echolocation signals are mostly frequency-modulated (FM) upsweep pulses and appear to be species specific. Evolutionary processes of niche separation may have driven differentiation of beaked whale signals used for spatial orientation and foraging. FM pulses of eight species of beaked whales were identified, as well as five distinct pulse types of unknown species, but presumed to be from beaked whales. Current evidence suggests these five distinct but unidentified FM pulse types are also species-specific and are each produced by a separate species. There may be a relationship between adult body length and center frequency with smaller whales producing higher frequency signals. This could be due to anatomical and physiological restraints or it could be an evolutionary adaption for detection of smaller prey for smaller whales with higher resolution using higher frequencies. The disadvantage of higher frequencies is a shorter detection range. Whales echolocating with the highest frequencies, or broadband, likely lower source level signals also use a higher repetition rate, which might compensate for the shorter detection range. Habitat modeling with acoustic detections should give further insights into how niches and prey may have shaped species-specific FM pulse types.

1.
Aguilar de Soto
,
N.
,
Madsen
,
P. T.
,
Tyack
,
P.
,
Arranz
,
P.
,
Marrero
,
J.
,
Fais
,
A.
,
Revelli
,
E.
, and
Johnson
,
M.
(
2012
). “
No shallow talk: Cryptic strategy in the vocal communication of Blainville's beaked whales
,”
Mar. Mamm. Sci.
28
,
E75
E92
.
2.
Au
,
W. W. L.
(
1993
).
The Sonar of Dolphins
(
Springer
,
New York
), pp.
277
.
3.
Baumann-Pickering
,
S.
,
Simonis
,
A. E.
,
Wiggins
,
S. M.
,
Brownell
,
R. L.
, and
Hildebrand
,
J. A.
(
2013a
). “
Aleutian Islands beaked whale echolocation signals
,”
Mar. Mamm. Sci.
29
,
221
227
.
4.
Baumann-Pickering
,
S.
,
Wiggins
,
S. M.
,
Roth
,
E. H.
,
Roch
,
M. A.
,
Schnitzler
,
H. U.
, and
Hildebrand
,
J. A.
(
2010
). “
Echolocation signals of a beaked whale at Palmyra Atoll
,”
J. Acoust. Soc. Am.
127
,
3790
3799
.
5.
Baumann-Pickering
,
S.
,
Yack
,
T. M.
,
Barlow
,
J.
,
Wiggins
,
S. M.
, and
Hildebrand
,
J. A.
(
2013b
). “
Baird's beaked whale echolocation signals
,”
J. Acoust. Soc. Am.
133
,
4321
4331
.
6.
Cocroft
,
R. B.
, and
Luca
,
P. D.
(
2006
). “
Size-frequency relationships in insect vibratory signals
,” in
Insect Sounds and Communication: Physiology, Behaviour, Ecology and Evolution
, edited by
M. F.
Claridge
, and
S.
Drosopoulos
(
CRC Taylor and Francis
,
Boca Raton, FL
), pp.
99
110
.
7.
Dalebout
,
M. L.
,
Baker
,
C. S.
,
Steel
,
D.
,
Robertson
,
K. M.
,
Chivers
,
S. J.
,
Perrin
,
W. F.
,
Mead
,
J. G.
,
Grace
,
R. V.
, and
T. David Schofield
,
J.
(
2007
). “
A divergent mtDNA lineage among Mesoplodon beaked whales: Molecular evidence for a new species in the tropical pacific?
,”
Mar. Mamm. Sci.
23
,
954
966
.
8.
Dalebout
,
M. L.
,
Baker
,
S.
,
Steel
,
D.
,
Thompson
,
K.
,
Robertson
,
K. M.
,
Chivers
,
S. J.
,
Perrin
,
W. F.
,
Goonatilake
,
M.
,
Anderson
,
R. C.
,
Mead
,
J. G.
,
Potter
,
C. W.
,
Yamada
,
T. K.
,
Thompson
,
L.
, and
Jupiter
,
D.
(
2012
). “
A newly recognised Beaked Whale (Ziphiidae) in the tropical Indo-Pacific: Mesoplodon hotaula or M. ginkgodens hotaula
,” in
64th meeting of the International Whaling Commission
, SC/64/SM13 (
Panama City, Panama
), pp.
1
16
.
9.
Davies
,
N. B.
, and
Halliday
,
T. R.
(
1978
). “
Deep croaks and fighting assessment in toads Bufo bufo
,”
Nature
274
,
683
685
.
10.
Dawson
,
S.
,
Barlow
,
J.
, and
Ljungblad
,
D.
(
1998
). “
Sounds recorded from Baird's beaked whale, Berardius bairdii
,”
Mar. Mamm. Sci.
14
,
335
344
.
11.
Feng
,
J.
,
Chen
,
M.
,
Li
,
Z.-X.
,
Zhao
,
H.-H.
,
Zhou
,
J.
, and
Zhang
,
S.-Y.
(
2002
). “
Relationship between echolocation frequency and body size in eight species of horseshoe bats (Rhinolophidae)
,”
Curr. Zool.
48
,
819
823
.
12.
Fitch
,
W. T.
(
1997
). “
Vocal tract length and formant frequency dispersion correlate with body size in rhesus macaques
,”
J. Acoust. Soc. Am.
102
,
1213
1222
.
13.
Fitch
,
W. T.
, and
Hauser
,
M. D.
(
1995
). “
Vocal production in nonhuman primates: Acoustics, physiology, and functional constraints on ‘honest’ advertisement
,”
Am. J. Primatol.
37
,
191
219
.
14.
Fitch
,
W. T.
, and
Hauser
,
M. D.
(
2002
). “
Unpacking ‘honesty’: vertebrate vocal production and the evolution of acoustic signals
,” in
Acoustic Communication
, edited by
A. M.
Simmons
,
R. R.
Fay
, and
A. N.
Popper
(
Springer
,
New York
), pp.
65
137
.
15.
Gillespie
,
D.
,
Dunn
,
C.
,
Gordon
,
J.
,
Claridge
,
D.
,
Embling
,
C.
, and
Boyd
,
I.
(
2009
). “
Field recordings of Gervais' beaked whales Mesoplodon europaeus from the Bahamas
,”
J. Acoust. Soc. Am.
125
,
3428
3433
.
16.
González
,
J.
(
2004
). “
Formant frequencies and body size of speaker: A weak relationship in adult humans
,”
J. Phon.
32
,
277
287
.
17.
Harris
,
T. R.
,
Fitch
,
W. T.
,
Goldstein
,
L. M.
, and
Fashing
,
P. J.
(
2006
). “
Black and White Colobus Monkey (Colobus guereza) roars as a source of both honest and exaggerated information about body mass
,”
Ethology
112
,
911
920
.
18.
Jefferson
,
T. A.
,
Webber
,
M. A.
, and
Pitman
,
R. L.
(
2008
).
Marine Mammals of the World—A Comprehensive Guide to their Identification
(
Elsevier
,
London
), pp.
573
.
19.
Johnson
,
M.
,
Madsen
,
P. T.
,
Zimmer
,
W. M. X.
,
de Soto
,
N. A.
, and
Tyack
,
P. L.
(
2004
). “
Beaked whales echolocate on prey
,”
Proc. R. Soc. B
271
,
S383
S386
.
20.
Johnson
,
M.
,
Madsen
,
P. T.
,
Zimmer
,
W. M. X.
,
de Soto
,
N. A.
, and
Tyack
,
P. L.
(
2006
). “
Foraging Blainville's beaked whales (Mesoplodon densirostris) produce distinct click types matched to different phases of echolocation
,”
J. Exp. Biol.
209
,
5038
5050
.
21.
Jones
,
G.
, and
Holderied
,
M. W.
(
2007
). “
Bat echolocation calls: Adaptation and convergent evolution
,”
Proc. R. Soc. B
274
,
905
912
.
22.
Jones
,
G.
, and
Teeling
,
E. C.
(
2006
). “
The evolution of echolocation in bats
,”
Trends Ecol. Evol.
21
,
149
156
.
23.
Li
,
Y.
,
Liu
,
Z.
,
Shi
,
P.
, and
Zhang
,
J.
(
2010
). “
The hearing gene Prestin unites echolocating bats and whales
,”
Curr. Biol.
20
,
R55
R56
.
24.
Liu
,
Y.
,
Cotton
,
J. A.
,
Shen
,
B.
,
Han
,
X.
,
Rossiter
,
S. J.
, and
Zhang
,
S.
(
2010
). “
Convergent sequence evolution between echolocating bats and dolphins
,”
Curr. Biol.
20
,
R53
R54
.
25.
MacLeod
,
C. D.
,
Santos
,
M. B.
, and
Pierce
,
G. J.
(
2003
). “
Review of data on diets of beaked whales: Evidence of niche separation and geographic segregation
,”
J. Mar. Biol. Assoc. U.K.
83
,
651
665
.
26.
Madsen
,
P. T.
,
Johnson
,
M.
,
de Soto
,
N. A.
,
Zimmer
,
W. M. X.
, and
Tyack
,
P.
(
2005
). “
Biosonar performance of foraging beaked whales (Mesoplodon densirostris)
,”
J. Exp. Biol.
208
,
181
194
.
27.
May-Collado
,
L. J.
,
Agnarsson
,
I.
, and
Wartzok
,
D.
(
2007
). “
Reexamining the relationship between body size and tonal signals frequency in whales: A comparative approach using a novel phylogeny
,”
Mar. Mamm. Sci.
23
,
524
552
.
28.
Pitman
,
R. L.
(
2002
). “
Mesoplodont Whales (Mesoplodon spp.)
,” in
Encyclopedia of Marine Mammals
, edited by
W. F.
Perrin
,
B.
Wursig
, and
H.
Thewissen
(
Academic Press
,
San Diego, CA
), pp.
738
742
.
29.
Rankin
,
S.
,
Baumann-Pickering
,
S.
,
Yack
,
T.
, and
Barlow
,
J.
(
2011
). “
Description of sounds recorded from Longman's beaked whale, Indopacetus pacificus
,”
J. Acoust. Soc. Am.
130
,
EL339
EL344
.
30.
Reby
,
D.
, and
McComb
,
K.
(
2003
). “
Anatomical constraints generate honesty: Acoustic cues to age and weight in the roars of red deer stags
,”
Anim. Behav.
65
,
519
530
.
31.
Riede
,
T.
, and
Fitch
,
T.
(
1999
). “
Vocal tract length and acoustics of vocalization in the domestic dog (Canis familiaris)
,”
J. Exp. Biol.
202
,
2859
2867
.
32.
Rogers
,
T. L.
, and
Brown
,
S. M.
(
1999
). “
Acoustic observations of Arnoux's beaked whale (Berardius arnuxii) off Kemp Land, Antarctica
,”
Mar. Mamm. Sci.
15
,
192
198
.
33.
Schnitzler
,
H.-U.
,
Moss
,
C. F.
, and
Denzinger
,
A.
(
2003
). “
From spatial orientation to food acquisition in echolocating bats
,”
Trends Ecol. Evol.
18
,
386
394
.
34.
Siemers
,
B. M.
, and
Schnitzler
,
H.-U.
(
2004
). “
Echolocation signals reflect niche differentiation in five sympatric congeneric bat species
,”
Nature
429
,
657
661
.
35.
Soldevilla
,
M. S.
,
Henderson
,
E. E.
,
Campbell
,
G. S.
,
Wiggins
,
S. M.
,
Hildebrand
,
J. A.
, and
Roch
,
M. A.
(
2008
). “
Classification of Risso's and Pacific white-sided dolphins using spectral properties of echolocation clicks
,”
J. Acoust. Soc. Am.
124
,
609
624
.
36.
Teeling
,
E. C.
(
2009
). “
Hear, hear: The convergent evolution of echolocation in bats?
,”
Trends Ecol. Evol.
24
,
351
354
.
37.
Tyack
,
P. L.
,
Johnson
,
M.
,
Soto
,
N. A.
,
Sturlese
,
A.
, and
Madsen
,
P. T.
(
2006
). “
Extreme diving of beaked whales
,”
J. Exp. Biol.
209
,
4238
4253
.
38.
Urick
,
R. J.
(
1983
).
Principles of Underwater Sound
(
McGraw-Hill
,
New York)
, pp.
423
.
39.
Wahlberg
,
M.
,
Beedholm
,
K.
,
Heerfordt
,
A.
, and
Mohl
,
B.
(
2011
). “
Characteristics of biosonar signals from the northern bottlenose whale, Hyperoodon ampullatus
,”
J. Acoust. Soc. Am.
130
,
3077
3084
.
40.
Wiggins
,
S. M.
, and
Hildebrand
,
J. A.
(
2007
). “
High-frequency Acoustic Recording Package (HARP) for broad-band, long-term marine mammal monitoring
,” in
International Symposium on Underwater Technology 2007 and International Workshop on Scientific Use of Submarine Cables and Related Technologies 2007
(
IEEE
,
Tokyo, Japan
), pp.
551
557
.
41.
Zimmer
,
W. M. X.
,
Harwood
,
J.
,
Tyack
,
P. L.
,
Johnson
,
M. P.
, and
Madsen
,
P. T.
(
2008
). “
Passive acoustic detection of deep-diving beaked whales
,”
J. Acoust. Soc. Am.
124
,
2823
2832
.
42.
Zimmer
,
W. M. X.
,
Johnson
,
M. P.
,
Madsen
,
P. T.
, and
Tyack
,
P. L.
(
2005
). “
Echolocation clicks of free-ranging Cuvier's beaked whales (Ziphius cavirostris)
,”
J. Acoust. Soc. Am.
117
,
3919
3927
.
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