Call order within vocal sequences of meerkats contains temporary contextual and individual information
- BiologyBMC biology
This study investigates the composition and information content of sentinel call sequences in meerkats and presents a novel type of combinatoriality where the order of the call types contains temporary contextual information, and also relates to the identity of the caller.
Internal acoustic structuring in pied babbler recruitment cries specifies the form of recruitment
Evidence is provided for internal “meaning-refining” acoustic variation within a larger stereotyped signal in pied babblers, lending support to the hypothesis that combinatorial structuring may have emerged in species with limited or fixed vocal repertoires in order to enhance communicative output.
Correlates of social role and conflict severity in wild vervet monkey agonistic screams
- PsychologyPloS one
It is suggested that acoustic variation might serve to reduce the aggression level of opponents, while simultaneously attracting potential helpers, after it was found that screams were both individually distinctive and dependent of the agonistic events.
Discrete call types referring to predation risk enhance the efficiency of the meerkat sentinel system
- Environmental ScienceScientific reports
It is shown that manipulation of perception of danger has different effects on the likelihood of emitting these different call types, and that these call types affect foraging individuals differently, and meerkats increase the efficiency of their sentinel system by producing several discrete call types that represent changes in predation risk and lead to adjustments of the group's vigilance behaviour.
Combinatoriality in the vocal systems of nonhuman animals.
- BiologyWiley interdisciplinary reviews. Cognitive science
An overview of the current evidence for combinatorial structures found in the vocal system of diverse species is provided and it is suggested that a fine-grained classification and differentiation of combinatorsiality is a useful approach permitting systematic comparisons across animals.
Effect of group size and experience on the ontogeny of sentinel calling behaviour in meerkats
- Environmental ScienceAnimal Behaviour
Vocal information and the navigation of social decisions in bats: Is social complexity linked to vocal complexity?
- PsychologyFunctional Ecology
It is suggested that social complexity drives vocal complexity in bats, and a positive feedback loop between social and vocal complexity for bat vocalizations is suggested, highlighting the importance of vocal information for negotiating fitness‐relevant social decisions of bats.
From collocations to call-ocations: using linguistic methods to quantify animal call combinations
It is argued collocation analysis represents a promising tool for identifying non-random, communicatively relevant call combinations in animals by implementing it on a pseudo dataset.
Does Social Complexity Drive Vocal Complexity? Insights from the Two African Elephant Species
- BiologyAnimals : an open access journal from MDPI
It is proposed that life history traits, a factor that has gained little attention as a driver of vocal complexity, and the extensive parental care associated with a uniquely low and slow reproductive rate may have led to the emergence of pronounced vocal complexity in the forest elephant despite their less complex social system compared to the savanna elephant.
Experience of the signaller explains the use of social versus personal information in the context of sentinel behaviour in meerkats
- PsychologyScientific Reports
This study uses playbacks of individually distinct sentinel calming calls produced during sentinel behaviour, a form of coordinated vigilance behaviour, to show that meerkats discriminate between social information provided by different sentinels and adjust their personal vigilance behaviour according to the individual that is played back.
SHOWING 1-10 OF 77 REFERENCES
Call combinations in wild chimpanzees
Analysis of call combinations in the repertoire of wild chimpanzees in the Tai Forest, Ivory Coast, shows that call combinations are an important part of chimpanzee communication, and the implications with regard to the evolution of human language are discussed.
Context-related call combinations in female Diana monkeys
- BiologyAnimal Cognition
This study investigated extensively the vocal behaviour of free-ranging and individually identified Diana monkeys in non-predatory contexts and demonstrated that some non-human primates are able to increase the effective size of their small vocal repertoire by varying the acoustic structure of basic call types but also by combining them into more complex structures.
Corncrake males learn new signal meanings during aggressive interactions
- BiologyAnimal Behaviour
Graded or discrete? A quantitative analysis of Campbell's monkey alarm calls
- BiologyAnimal Behaviour
Call combinations in monkeys: Compositional or idiomatic expressions?
- BiologyBrain and Language
Syntactic Structures in the Vocalizations of Wedge-Capped Capuchin Monkeys, Cebus Olivaceus
Call classification involved first defining a very large number of possible call types on the basis of these characteristics, and then using a discriminant analysis to identify which types should be lumped together, which presumably indicates an intermediate internal state.
Segmental concatenation of individual signatures and context cues in banded mongoose (Mungos mungo) close calls
- Psychology, BiologyBMC Biology
This study investigates how banded mongooses (Mungos mungo) encode multiple vocal signatures or cues in their frequently emitted graded single syllable close calls and provides the first evidence of segmental concatenation of information within a single syllables in non-human vocalizations.
The alarm call system of wild black-fronted titi monkeys, Callicebus nigrifrons
- BiologyBehavioral Ecology and Sociobiology
Recorded natural predator responses from five different groups of black-fronted titi monkeys suggest that calls A and B provide listeners with rapid and reliable information about the general classes of danger experienced by the caller, while obtaining more specific information through other call types and combinations and behavioural responses.