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

• DOI: 10.1121/1.4902428
• Publication Date: 2014-12-19T07:52:23Z
• Authors: Luciana Guimarães...; Isabela Maria Sea...; Lis Bittencourt; Tatiana Lemos Bisi; José Lailson Brit...; Alexandre de Frei...
• Keywords: Sound Spectrography; Species Specificity; Ultrasonic Waves; Dolphins; Transducers; 0103 physical sciences; Animals; 14. Life underwater; Vocalization, Animal; 01 natural sciences; Brazil

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