Whistle Matching in Wild Bottlenose Dolphins (
            <i>Tursiops truncatus</i>
            )

Janik, Vincent M.

doi:10.1126/science.289.5483.1355

Cited by 358 publications

(210 citation statements)

References 20 publications

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“…For example, learning also allows copying of signals in direct social interactions. Dolphins frequently copy each other's whistles in the wild (30). The fact that signature whistle shape carries identity information independent from voice features presents the possibility to use these whistles as referential signals, either addressing individuals or referring to them, similar to the use of names in humans.…”

Section: Discussionmentioning

confidence: 99%

Signature whistle shape conveys identity information to bottlenose dolphins

Janik

Sayigh

Wells

2006

Proc. Natl. Acad. Sci. U.S.A.

286

256

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Bottlenose dolphins (Tursiops truncatus) develop individually distinctive signature whistles that they use to maintain group cohesion. Unlike the development of identification signals in most other species, signature whistle development is strongly influenced by vocal learning. This learning ability is maintained throughout life, and dolphins frequently copy each other's whistles in the wild. It has been hypothesized that signature whistles can be used as referential signals among conspecifics, because captive bottlenose dolphins can be trained to use novel, learned signals to label objects. For this labeling to occur, signature whistles would have to convey identity information independent of the caller's voice features. However, experimental proof for this hypothesis has been lacking. This study demonstrates that bottlenose dolphins extract identity information from signature whistles even after all voice features have been removed from the signal. Thus, dolphins are the only animals other than humans that have been shown to transmit identity information independent of the caller's voice or location.animal communication ͉ individual recognition ͉ Tursiops truncatus

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Section: Discussionmentioning

confidence: 99%

Signature whistle shape conveys identity information to bottlenose dolphins

Janik

Sayigh

Wells

2006

Proc. Natl. Acad. Sci. U.S.A.

286

256

View full text Add to dashboard Cite

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“…Bottle-nosed dolphins (Tursiops truncates) produce individually distinct whistles that may serve in individual identification (Janik, 2000). Similarly, a number of authors have reported individual differences within certain types of primate vocalizations, suggesting that some primate calls may possess signature features as well-for example, Lemur catta (Macedonia, 1986;Oda, 2002), Saimiri sciureus (Boinski & Mitchell, 1997;Soltis, Bernhards, Donkin, & Newman, 2002), Callithrix jacchus (Jones, Harris, & Catchpole, 1993), Macaca sylvanus (Hammerschmidt & Todt, 1995), and Presbytis thomasi (Wich, Koski, de Vries, & van Schaik, 2003).…”

Section: Vocal Plasticity and Vocal Learningmentioning

confidence: 99%

Socially Meaningful Vocal Plasticity in Adult Campbell's Monkeys (Cercopithecus campbelli).

Lemasson¹,

Hausberger²,

Zuberbühler³

2005

Journal of Comparative Psychology

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Campbell's monkeys (Cercopithecus campbelli) frequently exchange vocalizations, the combinedharmonic calls, with individuals responding to one another's calls. Previous work has shown that these calls can be grouped into several structural variants. Adult females differ in their variant repertoires, which may change during their adult life, particularly after changes in the group composition. Playback of females' currently produced variants triggered vocal responses from other group members, whereas the same females' former, no longer used variants and those of stranger females never did. In contrast, former variants caused long-term cessation of vocal behavior, whereas stranger variants had no effect. Data showed that monkeys were able to distinguish between the different types of variants, indicating that these calls form part of a long-term social memory.Plasticity in vocal production is a widespread phenomenon in songbirds and some marine mammals, but for nonhuman primates comparably little evidence is available. Current theory suggests that primates have little influence over the acoustic structure of their calls and that vocal repertoires are under strong genetic control. If they occur, ontogenetic changes in call structure are usually explained as the results of maturational effects (Fischer,

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“…Using a hydrophone array to localize underwater sounds, Janik (2000) reported whistle matching by unidentified individuals in the Moray Firth, Scotland. He recorded 176 whistle 'interactions' where whistles occurred in close temporal proximity but too far apart spatially for one individual to have swum rapidly between locations to produce both.…”

Section: Communicationmentioning

confidence: 99%

Dolphin social intelligence: complex alliance relationships in bottlenose dolphins and a consideration of selective environments for extreme brain size evolution in mammals

Connor

2007

Phil. Trans. R. Soc. B

225

229

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Bottlenose dolphins in Shark Bay, Australia, live in a large, unbounded society with a fission-fusion grouping pattern. Potential cognitive demands include the need to develop social strategies involving the recognition of a large number of individuals and their relationships with others. Patterns of alliance affiliation among males may be more complex than are currently known for any non-human, with individuals participating in 2-3 levels of shifting alliances. Males mediate alliance relationships with gentle contact behaviours such as petting, but synchrony also plays an important role in affiliative interactions. In general, selection for social intelligence in the context of shifting alliances will depend on the extent to which there are strategic options and risk. Extreme brain size evolution may have occurred more than once in the toothed whales, reaching peaks in the dolphin family and the sperm whale. All three 'peaks' of large brain size evolution in mammals (odontocetes, humans and elephants) shared a common selective environment: extreme mutual dependence based on external threats from predators or conspecific groups. In this context, social competition, and consequently selection for greater cognitive abilities and large brain size, was intense.

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Whistle Matching in Wild Bottlenose Dolphins ( Tursiops truncatus )

Cited by 358 publications

References 20 publications

Signature whistle shape conveys identity information to bottlenose dolphins

Signature whistle shape conveys identity information to bottlenose dolphins

Socially Meaningful Vocal Plasticity in Adult Campbell's Monkeys (Cercopithecus campbelli).

Dolphin social intelligence: complex alliance relationships in bottlenose dolphins and a consideration of selective environments for extreme brain size evolution in mammals

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