Dear colleagues,
The following article has been recently published online in The Journal
of the Acoustical Society of America (Vol. 126, Issue 3):
van der Woude, S. E. (2009). "*Bottlenose dolphins (/Tursiops
truncatus/) moan as low in frequency as baleen whales*," J. Acoust. Soc.
Am. 126, 1552--1562.
A PDF copy of the article is available at
http://link.aip.org/link/?JAS/126/1552
or by request from [email protected] <mailto:[email protected]> .
Supplementary material (2 videos and 1 PDF file) can be downloaded at
ftp://ftp.aip.org/epaps/journ_acoust_soc/E-JASMAN-126-013909 .
Kind regards,
Sylvia E. van der Woude
ABSTRACT:
Despite a vast number of investigations on the vocal repertoire of
bottlenose dolphins, it is still not fully described. This publication
reports on a newly discovered tonal low-frequency vocalization in the
species at frequencies similar to baleen whale "moans." Dolphin moans
are characterized by a slightly modulated fundamental frequency well
below 500 Hz that ranges in duration from 0.2 to 8.7 s. Recordings (68
h) were obtained from eight Black Sea bottlenose dolphins residing in an
open sea enclosure in Israel. Of 132 unambiguous moans, 49 occurred
clearly associated with the release of air from a dolphin's blowhole,
which allowed for identifying five moaning individuals. Reasons why this
vocalization has not been previously described in any toothed whale are
discussed. Moans might not be part of the species' natural repertoire
but likewise might have been overlooked due to their inconspicuousness
and scarcity, technical limitations, or methodological biases. The
function of moaning is unclear; however, the data suggest that moans are
signals of anticipating physical satiation provided by humans, i.e.,
feeding or petting. To further address these questions, verification of
moans in other populations and experimental investigation of the
properties of moan production and perception are required.
(DOI: 10.1121/1.3177272)
/Copyright notice: © 2009 Acoustical Society of America. This article
may be downloaded for personal use only. Any other use requires prior
permission of the author and the Acoustical Society of America.
/
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Sylvia Eke van der Woude
e-mail: [email protected]
Germany:
Reichenberger Str. 36
10999 Berlin
cell phone: 0049 - 173 - 13 886 73
phone: 0049 - 30 - 61 28 28 28
fax: 0049 - 30 - 61 10 14 92
Israel:
ILDBR (Int. Lab. f. Dolphin Behaviour Research)
c/o Dolphin Reef
Southern Beach, P.O.B. 104
Eilat 88100
cell phone: 00972 - 525 - 126 116
phone (lab): 00972 - 8 - 634 18 68
fax (lab): 00972 - 8 - 637 59 21
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