巴西东南部瓜纳巴拉湾的圭亚那海豚（Sotalia guianensis）发出的高频哨声。

High-frequency whistles of Guiana dolphins (Sotalia guianensis) in Guanabara Bay, southeastern Brazil.

作者信息

Andrade Luciana Guimarães de, Maria Seabra Lima Isabela, Bittencourt Lis, Lemos Bisi Tatiana, Lailson Brito Júnior José, de Freitas Azevedo Alexandre

机构信息

Laboratório de Mamíferos Aquáticos e Bioindicadores, Faculdade de Oceanografia, Universidade do Estado do Rio de Janeiro, Rua São Francisco Xavier 524, Maracanã, Rio de Janeiro 20550-013, Rio de Janeiro, Brazil

出版信息

J Acoust Soc Am. 2015 Jan;137(1):EL15-9. doi: 10.1121/1.4902428.

DOI:10.1121/1.4902428

PMID:25618093

Abstract

Guiana dolphins produce whistles with a higher frequency and less complexity than most other delphinid species. The present study used a recording system with sampling rate of 192 kHz to describe the high-frequency whistles of Sotalia guianensis in Guanabara Bay, Rio de Janeiro. Eleven acoustic parameters (start, end, minimum, maximum, delta, center and peak frequency, duration, and frequency at 14, 12, and 34 of duration) were measured for all whistles. Whistles with a fundamental frequency up to 66.7 kHz were reported, thereby expanding the known frequency range of this species.

摘要

圭亚那海豚发出的啸声比大多数其他海豚科物种的频率更高且复杂性更低。本研究使用采样率为192千赫兹的录音系统来描述里约热内卢瓜纳巴拉湾的圭亚那海豚（Sotalia guianensis）的高频啸声。对所有啸声测量了11个声学参数（起始、结束、最小、最大、差值、中心和峰值频率、持续时间以及持续时间1/4、1/2和3/4处的频率）。报告了基频高达66.7千赫兹的啸声，从而扩大了该物种已知的频率范围。