{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,30]],"date-time":"2026-09-30T21:59:28Z","timestamp":1790805568458,"version":"4.1.0"},"reference-count":35,"publisher":"Acoustical Society of America (ASA)","issue":"2","content-domain":{"domain":["pubs.aip.org"],"crossmark-restriction":true},"short-container-title":[],"published-print":{"date-parts":[[2006,2,1]]},"abstract":"<jats:p>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 = 23m), 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 = 14m), 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 10m or more, suggesting that the task of vigilance in a pod may not be shared equally by all members at all times.<\/jats:p>","DOI":"10.1121\/1.2151804","type":"journal-article","created":{"date-parts":[[2006,2,2]],"date-time":"2006-02-02T20:35:39Z","timestamp":1138912539000},"page":"1244-1250","update-policy":"https:\/\/doi.org\/10.1063\/aip-crossmark-policy-page","source":"Crossref","is-referenced-by-count":63,"title":["The spatial context of free-ranging Hawaiian spinner dolphins (<b><i>Stenella longirostris<\/i><\/b>) producing acoustic signals"],"prefix":"10.1121","volume":"119","author":[{"given":"Marc O.","family":"Lammers","sequence":"first","affiliation":[{"name":"University of Hawaii Marine Mammal Research Program, Hawaii Institute of Marine Biology, , P.O. Box 1106, Kailua, Hawaii 96734, and , P.O. Box 61692, Honolulu, Hawaii 96839"},{"name":"Oceanwide Science Institute Marine Mammal Research Program, Hawaii Institute of Marine Biology, , P.O. Box 1106, Kailua, Hawaii 96734, and , P.O. Box 61692, Honolulu, Hawaii 96839"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Michiel","family":"Schotten","sequence":"additional","affiliation":[{"name":"Groningen University Department of Marine Biology, . P.O. Box 14, 9750 AA Haren, The Netherlands, Marine Mammal Research Program, Hawaii Institute of Marine Biology, , P.O. Box 1106, Kailua, Hawaii 96734, and , P.O. Box 61692, Honolulu, Hawaii 96839"},{"name":"University of Hawaii Department of Marine Biology, . P.O. Box 14, 9750 AA Haren, The Netherlands, Marine Mammal Research Program, Hawaii Institute of Marine Biology, , P.O. Box 1106, Kailua, Hawaii 96734, and , P.O. Box 61692, Honolulu, Hawaii 96839"},{"name":"Oceanwide Science Institute Department of Marine Biology, . P.O. Box 14, 9750 AA Haren, The Netherlands, Marine Mammal Research Program, Hawaii Institute of Marine Biology, , P.O. Box 1106, Kailua, Hawaii 96734, and , P.O. Box 61692, Honolulu, Hawaii 96839"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Whitlow W. L.","family":"Au","sequence":"additional","affiliation":[{"name":"Hawaii Institute of Marine Biology Marine Mammal Research Program, , , P.O. Box 1106, Kailua, Hawaii 96734"},{"name":"University of Hawaii Marine Mammal Research Program, , , P.O. Box 1106, Kailua, Hawaii 96734"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"231","reference":[{"key":"2023072723190400000_c1","volume-title":"The Sonar of Dolphins","year":"1993"},{"key":"2023072723190400000_c2","doi-asserted-by":"publisher","first-page":"3699","DOI":"10.1121\/1.428221","article-title":"Transmission beam pattern and echolocation signals of a harbor porpoise (Phocoena phocoena)","volume":"106","year":"1999","journal-title":"J. Acoust. Soc. 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