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Fig. 5.9 Examples of Risso’s dolphin whistles (a) and clicks (b)
Fig. 5.8 Risso’s dolphin
photographed off the
Brazilian coast
(Reproduced with
permission of Rodrigo
Genoves)
(2013) conducted a study in Brazil describing the acoustic parameters of the tonal
sounds of this dolphin.
5.4.2 Rough-Toothed Dolphin (Steno bredanesis)
The rough-toothed dolphin is a small delphinidae that can reach up to 2.85 ms long
and is distributed in tropical and temperate warm waters worldwide (Bastida et al.
2007). In Brazilian waters this species can be found over the continental shelf shallow and deep waters from the northeast to south regions, whereas in Rio de Janeiro
A. Andriolo et al.
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