Bottlenose dolphins exchange signature whistles when meeting at sea.

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2012-07-07

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Abstract

The bottlenose dolphin, Tursiops truncatus, is one of very few animals that, through vocal learning, can invent novel acoustic signals and copy whistles of conspecifics. Furthermore, receivers can extract identity information from the invented part of whistles. In captivity, dolphins use such signature whistles while separated from the rest of their group. However, little is known about how they use them at sea. If signature whistles are the main vehicle to transmit identity information, then dolphins should exchange these whistles in contexts where groups or individuals join. We used passive acoustic localization during focal boat follows to observe signature whistle use in the wild. We found that stereotypic whistle exchanges occurred primarily when groups of dolphins met and joined at sea. A sequence analysis verified that most of the whistles used during joins were signature whistles. Whistle matching or copying was not observed in any of the joins. The data show that signature whistle exchanges are a significant part of a greeting sequence that allows dolphins to identify conspecifics when encountering them in the wild.

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10.1098/rspb.2011.2537

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Quick, Nicola J, and Vincent M Janik (2012). Bottlenose dolphins exchange signature whistles when meeting at sea. Proc Biol Sci, 279(1738). pp. 2539–2545. 10.1098/rspb.2011.2537 Retrieved from https://hdl.handle.net/10161/11609.

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Quick

Nicola Quick

Adjunct Assistant Professor of Marine Science and Conservation

Dr Nicola J. Quick is an Adjunct Assistant Professor at the Nicholas School of the Environment and a Lecturer in Marine Conservation at the University of Plymouth, UK. Dr Quick holds a PhD in animal behavior and acoustics from The University of St Andrews, Scotland, UK. Dr Quick conducts research on the acoustic behavior of marine mammals and the effects of anthropogenic noise on cetaceans. Dr Quick has produced a number of high level reports and peer reviewed publications for a range of sectors including the US, German and UK military, large oil and gas producers, the wind and wet renewables industries, the British and Scottish governments, statutory regulators and academic institutions.




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