Short first click intervals in echolocation trains of three species of deep diving odontocetes.
J Acoust Soc Am
; 141(2): 900, 2017 02.
Article
em En
| MEDLINE
| ID: mdl-28253668
ABSTRACT
All odontocetes produce echolocation clicks as part of their vocal repertoire. In this paper the authors analysed inter-click-intervals in recordings from suction cup tags with a focus on the first inter-click interval of each click train. The authors refer to shorter first inter-click intervals as short first intervals (SFIs). The authors found that the context of SFI occurrence varies across three deep-diving species. In Blainville's beaked whales, 87% of click trains that were preceded by a terminal buzz started with SFIs. In Cuvier's beaked whales, only sub-adult animals produced notable amounts of SFIs. In contrast, sperm whales were much more likely to produce SFIs on the first click train of a dive. While the physiological and/or behavioural reasons for SFI click production are unknown, species differences in their production could provide a window into the evolution of odontocete echolocation.
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01-internacional
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MEDLINE
Idioma:
En
Ano de publicação:
2017
Tipo de documento:
Article