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Captive dolphins, Tursiops truncatus, develop signature whistles that match acoustic features of human-made model sounds

Research output: Contribution to journalArticle

DOI

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Captive dolphins, Tursiops truncatus, develop signature whistles that match acoustic features of human-made model sounds. / Miksis, J L ; Tyack, P L ; Buck, J R .

In: Journal of the Acoustical Society of America, Vol. 112, No. 2, 08.2002, p. 728-739.

Research output: Contribution to journalArticle

Harvard

Miksis, JL, Tyack, PL & Buck, JR 2002, 'Captive dolphins, Tursiops truncatus, develop signature whistles that match acoustic features of human-made model sounds', Journal of the Acoustical Society of America, vol. 112, no. 2, pp. 728-739. https://doi.org/10.1121/1.1496079

APA

Miksis, J. L., Tyack, P. L., & Buck, J. R. (2002). Captive dolphins, Tursiops truncatus, develop signature whistles that match acoustic features of human-made model sounds. Journal of the Acoustical Society of America, 112(2), 728-739. https://doi.org/10.1121/1.1496079

Vancouver

Miksis JL, Tyack PL, Buck JR. Captive dolphins, Tursiops truncatus, develop signature whistles that match acoustic features of human-made model sounds. Journal of the Acoustical Society of America. 2002 Aug;112(2):728-739. https://doi.org/10.1121/1.1496079

Author

Miksis, J L ; Tyack, P L ; Buck, J R . / Captive dolphins, Tursiops truncatus, develop signature whistles that match acoustic features of human-made model sounds. In: Journal of the Acoustical Society of America. 2002 ; Vol. 112, No. 2. pp. 728-739.

Bibtex - Download

@article{5829e08827894918b3691a883545f0c6,
title = "Captive dolphins, Tursiops truncatus, develop signature whistles that match acoustic features of human-made model sounds",
abstract = "This paper presents a cross-sectional study testing whether dolphins that are born in aquarium pools where they hear trainers' whistles develop whistles that are less frequency modulated than those of wild dolphins. Ten pairs of captive and wild dolphins were matched for age and sex. Twenty whistles were sampled from each dolphin. Several traditional acoustic features (total duration, duration minus any silent periods, etc.) were measured for each whistle, in addition to newly defined flatness parameters: total flatness ratio (percentage of whistle scored as unmodulated), and contiguous flatness ratio (duration of longest flat segment divided by total duration). The durations of wild dolphin whistles were found to be significantly longer, and the captive dolphins had whistles that were less frequency modulated and more like the trainers' whistles. Using a standard t-test, the captive dolphin had a significantly higher total flatness ratio in 9/10 matched pairs, and in 8/10 pairs the captive dolphin had significantly higher contiguous flatness ratios. These results suggest that captive-born dolphins can incorporate features of artificial acoustic models made by humans into their signature whistles. (C) 2002 Acoustical Society of America.",
keywords = "BOTTLE-NOSED DOLPHINS, VOCAL MIMICRY",
author = "Miksis, {J L} and Tyack, {P L} and Buck, {J R}",
year = "2002",
month = "8",
doi = "10.1121/1.1496079",
language = "English",
volume = "112",
pages = "728--739",
journal = "Journal of the Acoustical Society of America",
issn = "0001-4966",
publisher = "Acoustical Society of America",
number = "2",

}

RIS (suitable for import to EndNote) - Download

TY - JOUR

T1 - Captive dolphins, Tursiops truncatus, develop signature whistles that match acoustic features of human-made model sounds

AU - Miksis, J L

AU - Tyack, P L

AU - Buck, J R

PY - 2002/8

Y1 - 2002/8

N2 - This paper presents a cross-sectional study testing whether dolphins that are born in aquarium pools where they hear trainers' whistles develop whistles that are less frequency modulated than those of wild dolphins. Ten pairs of captive and wild dolphins were matched for age and sex. Twenty whistles were sampled from each dolphin. Several traditional acoustic features (total duration, duration minus any silent periods, etc.) were measured for each whistle, in addition to newly defined flatness parameters: total flatness ratio (percentage of whistle scored as unmodulated), and contiguous flatness ratio (duration of longest flat segment divided by total duration). The durations of wild dolphin whistles were found to be significantly longer, and the captive dolphins had whistles that were less frequency modulated and more like the trainers' whistles. Using a standard t-test, the captive dolphin had a significantly higher total flatness ratio in 9/10 matched pairs, and in 8/10 pairs the captive dolphin had significantly higher contiguous flatness ratios. These results suggest that captive-born dolphins can incorporate features of artificial acoustic models made by humans into their signature whistles. (C) 2002 Acoustical Society of America.

AB - This paper presents a cross-sectional study testing whether dolphins that are born in aquarium pools where they hear trainers' whistles develop whistles that are less frequency modulated than those of wild dolphins. Ten pairs of captive and wild dolphins were matched for age and sex. Twenty whistles were sampled from each dolphin. Several traditional acoustic features (total duration, duration minus any silent periods, etc.) were measured for each whistle, in addition to newly defined flatness parameters: total flatness ratio (percentage of whistle scored as unmodulated), and contiguous flatness ratio (duration of longest flat segment divided by total duration). The durations of wild dolphin whistles were found to be significantly longer, and the captive dolphins had whistles that were less frequency modulated and more like the trainers' whistles. Using a standard t-test, the captive dolphin had a significantly higher total flatness ratio in 9/10 matched pairs, and in 8/10 pairs the captive dolphin had significantly higher contiguous flatness ratios. These results suggest that captive-born dolphins can incorporate features of artificial acoustic models made by humans into their signature whistles. (C) 2002 Acoustical Society of America.

KW - BOTTLE-NOSED DOLPHINS

KW - VOCAL MIMICRY

U2 - 10.1121/1.1496079

DO - 10.1121/1.1496079

M3 - Article

VL - 112

SP - 728

EP - 739

JO - Journal of the Acoustical Society of America

JF - Journal of the Acoustical Society of America

SN - 0001-4966

IS - 2

ER -

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