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Compared to other contour types, the high frequency whistles are characterized by higher bandwidths, shorter durations, fewer harmonics, and higher sweep rates. The results add to the knowledge of vocal behavior of this species.<\/jats:p>","DOI":"10.1121\/1.4928308","type":"journal-article","created":{"date-parts":[[2015,10,1]],"date-time":"2015-10-01T00:47:53Z","timestamp":1443660473000},"page":"1696-1701","update-policy":"https:\/\/doi.org\/10.1063\/aip-crossmark-policy-page","source":"Crossref","is-referenced-by-count":18,"title":["Killer whale (<i>Orcinus orca<\/i>) whistles from the western South Atlantic Ocean include high frequency signals"],"prefix":"10.1121","volume":"138","author":[{"given":"Artur","family":"Andriolo","sequence":"first","affiliation":[{"name":"Universidade Federal de Juiz de Fora Laborat\u00f3rio de Ecologia Comportamental e Bioac\u00fastica, Departamento de Zoologia, Instituto de Ci\u00eancias Biol\u00f3gicas, , Rua Jos\u00e9 Louren\u00e7o Kelmer, s\/n - Campus Universit\u00e1rio, Bairro S\u00e3o Pedro, 36036-900, Juiz de Fora, Minas Gerais, Brazil"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Sarah S.","family":"Reis","sequence":"additional","affiliation":[{"name":"Universidade Federal de Juiz de Fora Laborat\u00f3rio de Ecologia Comportamental e Bioac\u00fastica, Departamento de Zoologia, Instituto de Ci\u00eancias Biol\u00f3gicas, , Rua Jos\u00e9 Louren\u00e7o Kelmer, s\/n - Campus Universit\u00e1rio, Bairro S\u00e3o Pedro, 36036-900, Juiz de Fora, Minas Gerais, Brazil"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Thiago O. 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