The spatial context of free-ranging Hawaiian spinner dolphins (Stenella longirostris) producing acoustic signals

The Journal of the Acoustical Society of America
Marc O LammersW L Au Whitlow

Abstract

To improve our understanding of how dolphins use acoustic signals in the wild, a three-hydrophone towed array was used to investigate the spatial occurrence of Hawaiian spinner dolphins (Stenella longirostris) relative to each other as they produced whistles, burst pulses, and echolocation clicks. Groups of approximately 30 to 60 animals were recorded while they traveled and socialized in nearshore waters off Oahu, Hawaii. Signaling animals were localized using time of arrival difference cues on the three channels. Sequences of whistles occurred between dolphins separated by significantly greater distances than animals producing burst pulses. Whistles typically originated from dolphins spaced widely apart (median = 23 m), supporting the hypothesis that whistles play a role in maintaining contact between animals in a dispersed group. Burst pulses, on the other hand, usually came from animals spaced closer to one another (median = 14 m), suggesting they function as a more intimate form of signaling between adjacent individuals. The spacing between echolocating animals was more variable and exhibited a bimodal distribution. Three quarters of echolocating animals were separated by 10 m or more, suggesting that the task of vigilance...Continue Reading

References

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Apr 22, 1966·Science·T G Lang, K Pryor
Jan 1, 2000·The Journal of the Acoustical Society of America·W W AuN M Schooneman
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Sep 30, 2003·The Journal of the Acoustical Society of America·Marc O LammersDenise L Herzing

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Citations

Oct 31, 2006·The Journal of the Acoustical Society of America·Songhai LiTomonari Akamatsu
Mar 14, 2007·The Journal of the Acoustical Society of America·Malene SimonLee A Miller
Jan 28, 2012·The Journal of the Acoustical Society of America·Paul Q SimsBernd Würsig
Jun 17, 2010·The Journal of the Acoustical Society of America·Simone Baumann-PickeringJohn A Hildebrand
Jul 12, 2012·The Journal of the Acoustical Society of America·Robin L Vaughn-HirshornKathleen M Dudzinski
Jul 19, 2013·The Journal of the Acoustical Society of America·Marta AzzolinCristina Giacoma
Jul 27, 2011·The Journal of the Acoustical Society of America·E Elizabeth HendersonMichael H Smith
Jan 29, 2009·The Journal of the Acoustical Society of America·Kelly J Benoit-Bird, Whitlow W L Au
Jan 21, 2014·The Journal of the Acoustical Society of America·Marta AzzolinCristina Giacoma
Feb 6, 2008·The Journal of the Acoustical Society of America·Brigitte M WeissFriedrich Ladich
Dec 2, 2010·The Journal of the Acoustical Society of America·Adam S Frankel, Suzanne Yin
Jul 26, 2014·American Journal of Physical Anthropology·Roberta Salmi, Diane M Doran-Sheehy
Aug 25, 2015·Behavioral Ecology and Sociobiology·Simone Baumann-PickeringJohn A Hildebrand
Apr 5, 2017·The Journal of the Acoustical Society of America·Marta Jussara CremerPaulo César Simões-Lopes
May 4, 2017·The Journal of the Acoustical Society of America·Luciana Guimarães de AndradeAlexandre de Freitas Azevedo
Dec 14, 2018·The Journal of the Acoustical Society of America·Eva M LeunissenWilliam Rayment

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