Bray calls emitted by common bottlenose dolphins (Tursiops truncatus) in offshore waters of northeastern Brazil

Abstract

Janik, 2000). However, there are different repertoires among populations, and understanding the specificities of each one is important for tailoring conservation strategies, as well as monitoring populations and evaluating perceived disturbances (e.g., Laiolo, 2010). The acoustic repertoire of this species is wide, and their sound emissions can be divided into two main categories (Jones et al., 2019;Simard et al., 2011): tonal sounds (whistles, chirps, and low frequency calls, including low frequency narrow-band, i.e., LFN sounds and moans) and pulsed sounds (echolocation clicks, burst pulses and single pulses). Other less frequent sound emissions have been described, like biphonations