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dc.contributor.authorYamamoto, Yukiko-
dc.contributor.authorAkamatsu, Tomonari-
dc.contributor.authorSilva, Vera Maria Ferreira da-
dc.contributor.authorYoshida, Yayoi-
dc.contributor.authorKohshima, Shiro-
dc.date.accessioned2020-06-15T21:48:19Z-
dc.date.available2020-06-15T21:48:19Z-
dc.date.issued2015-
dc.identifier.urihttps://repositorio.inpa.gov.br/handle/1/17568-
dc.description.abstractOdontoceti emit broadband high-frequency clicks on echolocation for orientation or prey detection. In the Amazon Basin, two odontoceti species, boto (Amazon River dolphin, Inia geoffrensis) and tucuxi (Sotalia fluviatilis), live sympatrically. The acoustic characteristics of the echolocation clicks of free-ranging botos and tucuxis were measured with a hydrophone array consisting of a full-band and an acoustic event recorder (A-tag). The clicks of the two species were short-duration broadband signals. The apparent source level was 201 dB 1 μPa peak-to-peak at 1 m in the botos and 181 dB 1 μPa peak-to-peak at 1 m in the tucuxis, and the centroid frequency was 82.3 kHz in the botos and 93.1 kHz in the tucuxis. The high apparent source level and low centroid frequency are possibly due to the difference in body size or sound production organs, especially the nasal structure, the sound source of clicks in odontoceti. © 2015 Acoustical Society of America.en
dc.language.isoenpt_BR
dc.relation.ispartofVolume 138, Número 2, Pags. 687-693pt_BR
dc.rightsRestrito*
dc.subjectAcousticsen
dc.subjectAcoustic Characteristicen
dc.subjectAcoustic Eventsen
dc.subjectApparent Sourceen
dc.subjectBroadband Signalen
dc.subjectEcholocation Clicksen
dc.subjectHigh Frequency Hfen
dc.subjectHydrophone Arraysen
dc.subjectSound Productionen
dc.subjectSonaren
dc.subjectAnatomy And Histologyen
dc.subjectAnimalsen
dc.subjectBody Sizeen
dc.subjectComparative Studyen
dc.subjectDolphinen
dc.subjectEcholocationen
dc.subjectFemaleen
dc.subjectHeaden
dc.subjectMaleen
dc.subjectPhysiologyen
dc.subjectRiveren
dc.subjectSound Detectionen
dc.subjectSpecies Differenceen
dc.subjectAnimalen
dc.subjectBody Sizeen
dc.subjectDolphinsen
dc.subjectEcholocationen
dc.subjectFemaleen
dc.subjectHeaden
dc.subjectMaleen
dc.subjectRiversen
dc.subjectSound Spectrographyen
dc.subjectSpecies Specificityen
dc.titleAcoustic characteristics of biosonar sounds of free-ranging botos (Inia geoffrensis) and tucuxis (Sotalia fluviatilis) in the Negro River, Amazon, Brazilen
dc.typeArtigopt_BR
dc.identifier.doi10.1121/1.4926440-
dc.publisher.journalJournal of the Acoustical Society of Americapt_BR
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