Franciscana dolphin (Pontoporia blainvillei) whistles were documented for the first time during 2003–2013 in Babitonga Bay estuary, South Brazil, together with burst pulses. Recordings were made from small boats under good sea conditions, and recording equipment that allowed analysis of sounds up to 96 kHz. The recordings were made in the presence of 2–31 franciscana dolphins. During 23 h and 53 min, 90 whistles and 51 burst pulse series were recorded. Although Guiana dolphins (Sotalia guianensis) inhabit nearby waters, none were observed in the area during the recordings. The authors recorded ten types of whistles. The initial frequency varied between 1.6 and 94.6 kHz, and the final frequency varied between 0.7 and 94.5 kHz; the authors were not able to determine if dolphin whistles exceeded the 96 kHz recording limit of the authors' equipment, although that is likely, especially because some whistles showed harmonics. Whistle duration varied between 0.008 and 0.361 s. Burst pulses had initial frequencies between 69 and 82.1 kHz (77 ± 3.81). These results showed that P. blainvillei produces whistles and burst pulses, although they seem to be produced infrequently.
References
1.
Au
, W. W. L.
(2000
). “Hearing in whales and dolphins: An overview
,” in Hearing by Whales and Dolphins
, edited by W. W. L.
Au
, A. N.
Popper
, and R. R.
Fay
(Springer-Verlag
, New York
), pp. 1
–42
.3.
Azevedo
, A. F.
, Flach
, L.
, Bisi
, T. L.
, Andrade
, L. G.
, Dorneles
, P. R.
, and Lailson-Brito
, J.
(2010
). “Whistles emitted by Atlantic spotted dolphins (Stenella frontalis) in southeastern Brazil
,” J. Acoust. Soc. Am.
127
, 2646
–2651
.2.
Azevedo
, A. F.
, and Van Sluys
, M.
(2005
). “Whistles of tucuxi dolphins (Sotalia fluviatilis) in Brazil: Comparisons among populations
,” J. Acoust. Soc. Am.
117
, 1456
–1464
.4.
Baptista
, L. F.
, and Gaunt
, S. L. L.
(1997
). “Bioacoustics as a tool in conservation studies
,” in Behavioral Approaches to Conservation in the Wild
, edited by J. R.
Clemmons
and R.
Buchholz
(Cambridge University Press
, Cambridge
), pp. 212
–242
.5.
Boisseau
, O.
(2005
). “Quantifying the acoustic repertoire of a population: The vocalizations of free-ranging bottlenose dolphins in Fiordland, New Zealand
,” J. Acoust. Soc. Am.
117
, 2318
–2329
.6.
Bordino
, P.
, Kraus
, S.
, Albareda
, D.
, Fazio
, A.
, Palmerio
, A.
, Mendez
, M.
, and Botta
, S.
(2002
). “Reducing incidental mortality of franciscana dolphin Pontoporia blainvillei with acoustic warning devices attached to fishing nets
,” Mar. Mamm. Sci.
18
, 833
–842
.7.
Busnel
, R. G.
, Dziedzic
, A.
, and Alcuri
, G.
(1974
). “Études preliminaries de signaux acoustiques du Pontoporia blainvillei Gervais et d′Orbigny (Cetacea, Platanistidae)” [“Preliminary studies of acoustic signals of Pontoporia blainvillei, Gervais and d'Orbigny (Cetacea, Platanistidae)”]
, Mammalia
38
, 449
–459
.8.
Cassens
, I.
, Vicario
, S.
, Waddell
, V. G.
, Balchowsky
, H.
, Van Belle
, D.
, Ding
, W.
, Fan
, C.
, Lal Mohan
, R. S.
, Simões-Lopes
, P. C.
, Bastida
, R.
, Meyer
, A.
, Stanhope
, M. J.
, and Milinkovitch
, M. C.
(2000
). “Independent adaptation to riverine habitats allowed survival of ancient cetacean lineages
,” Proc. Natl. Acad. Sci. U.S.A.
97
, 11343
–11347
.9.
Cremer
, M. J.
, Hardt
, F. A. S.
, Tonello-Júnior
, A. J.
, and Simões-Lopes
, P. C.
(2011
). “Distribution and status of the Guiana dolphin Sotalia guianensis (Cetacea, Delphinidae) population in Babitonga bay, Southern Brazil
,” Zool. Stud.
50
, 327
–337
.10.
Cremer
, M. J.
, and Simões-Lopes
, P. C.
(2005
). “The occurrence of Pontoporia blainvillei (Gervais & d′Orbigny) (Cetacea, Pontoporiidae) in an estuarine area in southern Brazil, in Babitonga bay, southern Brazil
,” Revta. Bras. Zoo.
25
, 717
–723
.100.
Cremer
, M. J.
, and Simões-Lopes
, P. C.
(2008
). “Distribution, abundance and density estimates of franciscanas, Pontoporia blainvillei (Cetacea: Pontoporiidae), in Babitonga bay, southern Brazil
,” Revta. Bras. Zoo.
25
, 397
–402
.11.
Crespo
, E. A.
(2002
). “Franciscana, Pontoporia blainvillei
,” in Encyclopedia of Marine Mammals
, edited by W. F.
Perrin
, B.
Wursig
, and J. G. M.
Thewissen
(Academic Press
, San Diego, CA
), pp. 482
–485
.12.
Dawson
, S. M.
(1991
). “Clicks and communication: The behavioral and social contexts of Hector's dolphin vocalizations
,” Ethology
88
, 265
–276
.13.
Dawson
, S. M.
(1994
). “The potential for reducing entanglement of dolphins and porpoises with acoustic modifications to gillnets
,” Rep. Int. Whal. Commn.
15
, 573
–578
.14.
Götz
, T.
, and Janik
, V. M.
(2013
). “Acoustic deterrent devices to prevent pinniped depredation: Efficiency, conservation concerns and possible solutions
,” Mar. Ecol. Prog. Ser.
492
, 285
–302
.15.
Herman
, L. M.
, and Tavolga
, W. N.
(1980
). “The communication systems of cetaceans
,” in Cetacean Behavior: Mechanisms and Functions
, edited by L. M.
Herman
(Wiley
, New York
), pp. 149
–209
.17.
Janik
, V. M.
(2009
). “Acoustic communication in delphinids
,” Adv. Study Behav.
40
, 123
–157
.18.
Janik
, V. M.
, Sayigh
, L. S.
, and Wells
, R. S.
(2006
). “Signature whistle contour shape conveys identity information to bottlenose dolphins
,” Proc. Natl. Acad. Sci. U.S.A.
103
, 8293
–8297
.19.
Janik
, V. M.
, and Slater
, P. J. B.
(1998
). “Context -specific use suggests that bottlenose dolphin signature whistles are cohesion calls
,” Anim. Behav.
56
, 829
–838
.20.
King
, S.
, Sayigh
, L.
, Wells
, R.
, Fellner
, W.
, and Janik
, V.
(2013
). “Vocal copying of individually distinctive signature whistles in bottlenose dolphins
,” Proc. R. Soc. B
280
, 1
–9
.21.
Lammers
, M. O.
, Au
, W. W. L.
, and Herzing
, H. L.
(2003
). “The broadband social acoustic signaling behavior of spinner and spotted dolphins
,” J. Acoust. Soc. Am.
114
, 1629
–1639
.22.
Lammers
, M. O.
, Schotten
, M.
, and Au
, W. W. L.
(2006
). “The spatial context of free-ranging Hawaiian spinner dolphins (Stenella longirostris) producing acoustic signals
,” J. Acoust. Soc. Am.
119
, 1244
–1250
.23.
Madsen
, P. T.
, Carder
, D. A.
, Bedholm
, K.
, and Ridgway
, S. H.
(2005
). “Porpoise clicks from a sperm whale nose—Convergent evolution of 130 kHz pulses in toothed whale sonars?
,” Bioacoustics
15
, 195
–206
.24.
May-Collado
, L. J.
, Agnarsson
, I.
, and Wartzok
, D.
(2007
). “Phylogenetic review of tonal sound production in whales in relation to sociality
,” BMC Evol. Biol.
7
, 136
.25.
May-Collado
, L. J.
, and Wartzok
, D.
(2007
). “The freshwater dolphin Inia geoffrensis produce high frequency whistles
,” J. Acoust. Soc. Am.
121
, 1203
–1212
.26.
May-Collado
, L. J.
, and Wartzok
, D.
(2009
). “A characterization of Guyana dolphin (Sotalia guianensis) whistles from Costa Rica: The importance of broadband recording systems
,” J. Acoust. Soc. Am.
125
, 1202
–1213
.27.
Melcón
, M. L.
, Failla
, M.
, and Iñiguez
, M. A.
(2012
). “Echolocation behavior of franciscana dolphins (Pontoporia blainvillei) in the wild
,” J. Acoust. Soc. Am.
131
, EL448
–EL453
.28.
Mendez
, M.
, Rosenbaum
, H. C.
, Subramaniam
, A.
, Yackulic
, C.
, and Bordino
, P.
(2010a
). “Isolation by environmental distance in mobile marine species: Molecular ecology of franciscana dolphins at their southern range
,” Mol. Ecol.
19
, 2212
–2228
.29.
Mendez
, M.
, Rosenbaum
, H. C.
, Wells
, R. S.
, Stamper
, M. A.
, and Bordino
, P.
(2010b
). “Genetic evidence highlights serious demographic impacts of by-catch in cetaceans
,” PLoS One
5
, E15550
.30.
Morisaka
, T.
, and Connor
, R. C.
(2007
). “Predation by killer whales (Orcinus orca) and the evolution of whistle loss and narrow-band high frequency clicks in odontocetes
,” J. Evol. Biol.
20
, 1439
–1458
.31.
Morisaka
, T.
, Shinohara
, M.
, and Taki
, M.
(2005a
). “Underwater sounds produced by neonatal bottlenose dolphins (Tursiops truncatus): I. Acoustic characteristics
,” Aquat. Mamm.
31
, 248
–257
.32.
Morisaka
, T.
, Shinohara
, M.
, and Taki
, M.
(2005b
). “Underwater sounds produced by neonatal bottlenose dolphins (Tursiops truncatus): II. Potential function.
,” Aquat. Mamm.
31
, 258
–265
.33.
Podos
, J.
, da Silva
, V. M. F.
, and Rossi- Santos
, M. R.
(2002
). “Vocalizations of Amazon River dolphins, Inia geoffrensis: Insights into the evolutionary origins of delphinid whistles
,” Ethology
108
, 601
–612
.34.
Praderi
, R.
, Pinedo
, M. C.
, and Crespo
, E. A.
(1989
). “Conservation and management of Pontoporia blainvillei in Uruguay, Brazil and Argentina
,” in Biology and Conservation of the River Dolphins
, edited by W. F.
Perrin
, R. L.
Brownell
, Jr., Zhou
Kaya
, and Liu
Jiankang
(IUCN
, Gland
), pp. 52
–56
.35.
Rasmussen
, M. H.
, and Miller
, L. A.
(2002
). “Whistles and clicks from white-beaked dolphins Lagenorhynchus albirostris (Gray 1846), recorded in Faxafloi Bay, Iceland
,” Aquat. Mamm.
28
, 78
–89
.36.
Reyes Reyes
, M. V.
, Tossenberger
, V. P.
, Iñiguez
, M. A.
, Hildebrand
, J. A.
, and Melcón
, M. L.
(2016
). “Communication sounds of Commerson's dolphins (Cephalorhynchus commersonii) and contextual use of vocalizations
,” Mar. Mam. Sci.
32
, 1219
–1233
.37.
Rodríguez
, D.
, Rivero
, L.
, and Bastida
, R.
(2002
). “Feeding ecology of the franciscana (Pontoporia blainvillei) in marine and estuarine waters of Argentina
,” Lat. Am. J. Aquat. Mamm.
1
, 77
–93
.38.
Samarra
, F. I. P.
, Deecke
, V. B.
, Vinding
, K.
, Rasmussen
, M. H.
, Swift
, R. J.
, and Miller
, P. J. O.
(2010
). “Killer whales (Orcinus orca) produce ultrasonic whistles
,” J. Acoust. Soc. Am.
128
, EL205
–EL210
.39.
Tellechea
, J. S.
, and Norbis
, W.
(2014
). “Sound characteristics of two neonatal franciscana dolphins (Pontoporia blainvillei)
,” Mar. Mamm. Sci.
30
, 1573
–1580
.40.
Tyack
, P. L.
, and Miller
, E. H.
(2002
). “Vocal anatomy, acoustic communication and echolocation
,” in Marine Mammal Biology: An Evolutionary Approach
, edited by A. R.
Hoelzel
(Blackwell Science
, Malden
), pp. 142
–184
.43.
Van Parijs
, S. M.
, Smith
, J.
, and Corkeron
, P. J.
(2002
). “Using calls to estimate the abundance of inshore dolphins: A case study with Pacific humpback dolphins Sousa chinensis
,” J. App. Ecol.
39
, 853
–864
.44.
Von Fersen
, L.
, Kamminga
, L. C.
, and Seidl
, A.
(1997
). “Estudios preliminares sobre el comportamiento de un ejemplar de franciscana (Pontoporia blainvillei) en Mundo Marino, Argentina (DT10)” [“Preliminary studies on the behavior of one individual of franciscana dolphin (Pontoporia blainvillei) in Mundo Marino, Argentina”]
, Report of the Third Workshop for Coordinated Research and Conservation of the Franciscana Dolphin (Pontoporia Blainvillei) in the Southwestern Atlantic
, Buenos Aires, Argentina (November 26–28). Available at http://www.cms.int/publications/pdf/franciscana_dolphin_buenos_aires_1997.pdf.45.
Wang
, X.
, Wang
, D.
, Akamatsu
, T.
, Fujita
, K.
, and Shiraki
, R.
(2006
). “Estimated detection distance of a baiji's (Chinese river dolphin, Lipotes vexillifer) whistles using a passive acoustic survey method
,” J. Acoust. Soc. Am.
120
, 1361
–1365
.46.
Wartzok
, D.
, and Ketten
, D.
(1999
). “Marine mammal sensory systems
,” in Biology of Marine Mammals
, edited by J. E.
Reynolds
III and S. A.
Rommel
(Smithsonian Institution
, Washington
), pp. 117
–175
.47.
Watkins
, W. A.
(1967
). “The harmonic interval fact or artifact in spectral analysis of pulse trains
,” in Marine Bio-Acoustics
, edited by W. N.
Tavolga
(Pergamon
, New York
), pp. 15
–43
.49.
Wells
, R. S.
, Bordino
, P.
, and Douglas
, D. C.
(2013
). “Patterns of social association in Franciscanas, Pontoporia blainvillei
,” Mar. Mamm. Sci.
29
, E520
–E528
.50.
Xiao
, Y.
, and Jing
, R.
(1989
). “Underwater acoustic signals of the baiji, Lipotes vexillifer
,” in Biology and Conservation of the River Dolphins
, Occasional Papers of the IUCN Species Survival Commission (SSC), No. 3, pp. 129
–136
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