{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,27]],"date-time":"2026-09-27T01:27:59Z","timestamp":1790472479102,"version":"4.1.0"},"reference-count":44,"publisher":"Acoustical Society of America (ASA)","issue":"3","content-domain":{"domain":["pubs.aip.org"],"crossmark-restriction":true},"short-container-title":[],"published-print":{"date-parts":[[2008,9,1]]},"abstract":"<jats:p>Combining different stereotyped vocal signals into specific sequences increases the range of information that can be transferred between individuals. The temporal emission pattern and the behavioral context of vocal sequences have been described in detail for a variety of birds and mammals. Yet, in cetaceans, the study of vocal sequences is just in its infancy. Here, we provide a detailed analysis of sequences of stereotyped whistles in killer whales off Vancouver Island, British Columbia. A total of 1140 whistle transitions in 192 whistle sequences recorded from resident killer whales were analyzed using common spectrographic analysis techniques. In addition to the stereotyped whistles described by Riesch et al., [(2006). \u201cStability and group specificity of stereotyped whistles in resident killer whales, Orcinus orca, off British Columbia,\u201d Anim. Behav.\u200871, 79\u201391.] We found a new and rare stereotyped whistle (W7) as well as two whistle elements, which are closely linked to whistle sequences: (1) stammers and (2) bridge elements. Furthermore, the frequency of occurrence of 12 different stereotyped whistle types within the sequences was not randomly distributed and the transition patterns between whistles were also nonrandom. Finally, whistle sequences were closely tied to close-range behavioral interactions (in particular among males). Hence, we conclude that whistle sequences in wild killer whales are complex signal series and propose that they are most likely emitted by single individuals.<\/jats:p>","DOI":"10.1121\/1.2956467","type":"journal-article","created":{"date-parts":[[2008,9,19]],"date-time":"2008-09-19T15:31:41Z","timestamp":1221838301000},"page":"1822-1829","update-policy":"https:\/\/doi.org\/10.1063\/aip-crossmark-policy-page","source":"Crossref","is-referenced-by-count":36,"title":["Whistle sequences in wild killer whales (<i>Orcinus orca<\/i>)"],"prefix":"10.1121","volume":"124","author":[{"given":"R\u00fcdiger","family":"Riesch","sequence":"first","affiliation":[{"name":"University of Oklahoma Department of Zoology, , 730 Van Vleet Oval, Norman, Oklahoma 73019"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"John K. B.","family":"Ford","sequence":"additional","affiliation":[{"name":"Cetacean Research Program , Pacific Biological Station, Fisheries and Oceans Canada, Nanaimo, British Columbia V9T 6N7, Canada"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Frank","family":"Thomsen","sequence":"additional","affiliation":[{"name":"Center for Environment , Fisheries and Aquaculture Science (Cefas), Pakefield Road, Lowestoft, Suffolk, NR33 0HT, United Kingdom"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"231","reference":[{"key":"2023072009022598400_c1","doi-asserted-by":"crossref","first-page":"129","DOI":"10.1163\/156853988X00133","article-title":"Duetting, pair bonding and agonistic display in parakeet pairs","volume":"106","year":"1988","journal-title":"Behaviour"},{"key":"2023072009022598400_c2","volume-title":"Application of Information Theory to Psychology","year":"1959"},{"key":"2023072009022598400_c3","doi-asserted-by":"publisher","first-page":"1103","DOI":"10.1121\/1.2211547","article-title":"Acoustic properties of humpback whale song","volume":"120","year":"2006","journal-title":"J. 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