来自南大西洋西部的虎鲸（逆戟鲸）叫声包含高频信号。

Killer whale (Orcinus orca) whistles from the western South Atlantic Ocean include high frequency signals.

作者信息

Andriolo Artur, Reis Sarah S, Amorim Thiago O S, Sucunza Federico, de Castro Franciele R, Maia Ygor Geyer, Zerbini Alexandre N, Bortolotto Guilherme A, Dalla Rosa Luciano

机构信息

Laboratório de Ecologia Comportamental e Bioacústica, Departamento de Zoologia, Instituto de Ciências Biológicas, Universidade Federal de Juiz de Fora, Rua José Lourenço Kelmer, s/n - Campus Universitário, Bairro São Pedro, 36036-900, Juiz de Fora, Minas Gerais, Brazil.

Instituto Aqualie, Avenue Dr. Paulo Japiassu Coelho, 714 - Sala 206, Cascatinha, 36033-310, Juiz de Fora, Minas Gerais, Brazil.

出版信息

J Acoust Soc Am. 2015 Sep;138(3):1696-701. doi: 10.1121/1.4928308.

DOI:10.1121/1.4928308

PMID:26428807

Abstract

Acoustic parameters of killer whale (Orcinus orca) whistles were described for the western South Atlantic Ocean and highlight the occurrence of high frequency whistles. Killer whale signals were recorded on December of 2012, when a pod of four individuals was observed harassing a group of sperm whales. The high frequency whistles were highly stereotyped and were modulated mostly at ultrasonic frequencies. 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.

摘要

描述了南大西洋西部虎鲸（逆戟鲸）哨声的声学参数，并突出了高频哨声的出现。2012年12月记录了虎鲸的信号，当时观察到一群4只虎鲸骚扰一群抹香鲸。高频哨声高度定型，主要在超声频率上调制。与其他轮廓类型相比，高频哨声的特点是带宽更高、持续时间更短、谐波更少、扫描速率更高。这些结果增加了对该物种发声行为的了解。