Please use this identifier to cite or link to this item: https://repositorio.inpa.gov.br/handle/1/17568
Title: Acoustic characteristics of biosonar sounds of free-ranging botos (Inia geoffrensis) and tucuxis (Sotalia fluviatilis) in the Negro River, Amazon, Brazil
Authors: Yamamoto, Yukiko
Akamatsu, Tomonari
Silva, Vera Maria Ferreira da
Yoshida, Yayoi
Kohshima, Shiro
Keywords: Acoustics
Acoustic Characteristic
Acoustic Events
Apparent Source
Broadband Signal
Echolocation Clicks
High Frequency Hf
Hydrophone Arrays
Sound Production
Sonar
Anatomy And Histology
Animals
Body Size
Brasil
Comparative Study
Dolphin
Echolocation
Female
Head
Male
Physiology
River
Sound Detection
Species Difference
Animal
Body Size
Brasil
Dolphins
Echolocation
Female
Head
Male
Rivers
Sound Spectrography
Species Specificity
Issue Date: 2015
metadata.dc.publisher.journal: Journal of the Acoustical Society of America
metadata.dc.relation.ispartof: Volume 138, Número 2, Pags. 687-693
Abstract: Odontoceti 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.
URI: https://repositorio.inpa.gov.br/handle/1/17568
metadata.dc.identifier.doi: 10.1121/1.4926440
Appears in Collections:Artigos

Files in This Item:
There are no files associated with this item.


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.