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However, acoustic features in one biphonic call shared by five subjects provided little evidence for an acoustic effect of synchronous bubble flow. Disproportionate bubbling supported other evidence that biphonic calls form a distinct category, but suggested a function in short-range communication.<\/jats:p>","DOI":"10.1121\/1.4905882","type":"journal-article","created":{"date-parts":[[2015,2,2]],"date-time":"2015-02-02T15:36:49Z","timestamp":1422891409000},"page":"EL165-EL170","update-policy":"https:\/\/doi.org\/10.1063\/aip-crossmark-policy-page","source":"Crossref","is-referenced-by-count":2,"title":["Disproportionate emission of bubble streams with killer whale biphonic calls: Perspectives on production and function"],"prefix":"10.1121","volume":"137","author":[{"given":"Ann E.","family":"Bowles","sequence":"first","affiliation":[{"name":"Hubbs-SeaWorld Research Institute , 2595 Ingraham Street, San Diego, California 92109 abowles@hswri.org"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Dawn M.","family":"Grebner","sequence":"additional","affiliation":[{"name":"Bioacoustician , 5029 Onstad Street, San Diego, California 92110 grebner@greeneridge.com"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Whitney B.","family":"Musser","sequence":"additional","affiliation":[{"name":"University of San Diego Department of Marine Sciences and Environmental Studies, , 5998 Alcal\u00e1 Park, San Diego, California 92110 whitney.musser@nmmpfoundation.org , dream.of.orcas@gmail.com"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Juliette S.","family":"Nash","sequence":"additional","affiliation":[{"name":"University of San Diego Department of Marine Sciences and Environmental Studies, , 5998 Alcal\u00e1 Park, San Diego, California 92110 whitney.musser@nmmpfoundation.org , dream.of.orcas@gmail.com"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Jessica L.","family":"Crance","sequence":"additional","affiliation":[{"name":"National Oceanographic and Atmospheric Administration National Marine Mammal Laboratory, , 7600 Sand Point Way NE, Seattle, Washington 98115 Jessica.crance@noaa.gov"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"231","published-online":{"date-parts":[[2015,2,2]]},"reference":[{"key":"2025071615565027600_c1","doi-asserted-by":"publisher","first-page":"1229","DOI":"10.1242\/jeb.094300","article-title":"Evidence for vocal learning in juvenile male killer whales, Orcinus orca, from an adventitious cross-socializing experiment","volume":"217","year":"2014","journal-title":"J. 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