Local variation in Barbary macaque shrill barks

  title={Local variation in Barbary macaque shrill barks},
  author={Julia Fischer and Kurt Hammerschmidt and Dietmar Todt},
  journal={Animal Behaviour},
We examined vocalizations of Barbary macaques, Macaca sylvanus, given in response to a dog, in two populations, at Rocamadour, France, and Salem, Germany. Calls were recorded from 16 individuals in Rocamadour and 23 individuals in Salem. Despite an overall similarity, an acoustic analysis revealed significant differences in the call structure between populations. To test the perceptual salience of these acoustic differences, we conducted playback experiments in both populations in which calls… Expand
Spatial variation in black-headed night monkey (Aotus nigriceps) vocalizations
The results suggest that Aotus nigriceps exhibits substantial acoustic variability across sites that could potentially be useful for taxonomic classification, although additional geographically distant populations still need to be sampled. Expand
Dialects in pygmy marmosets? Population variation in call structure
Significant population differences in the structure of two vocalizations in wild pygmy marmosets (Trills and J calls) are reported, the first evidence of within‐subspecies vocal differences, or dialects, in wild populations of a neotropical primate species. Expand
Does learning affect the structure of vocalizations in chimpanzees?
Within-group variation in call structure of the captive groups was similar to that found in a group of wild Ugandan chimpanzees, suggesting the presence of species-specific constraints on this call within which different populations can converge on local variants. Expand
Function of Loud Calls in Howler Monkeys
Beyond the unique sound of howler monkey vocalizations, their vigorous loud calling displays are perplexing given the otherwise sedentary lifestyle of these primates. Here we provide potentialExpand
Temporal but Not Acoustic Plasticity in Hybrid Howler Monkey (Alouatta palliata × A. pigra) Loud Calls
This study shows that, at least for temporal features,Primate vocal plasticity can extend beyond intrapopulation variation, consistent with a growing body of research suggesting that primate vocalizations may be more flexible than traditionally assumed. Expand
Baboon vocal repertoires and the evolution of primate vocal diversity.
The findings corroborate the view that the structure of nonhuman primate vocalizations is highly conserved, despite the differences in social systems, and allow for plasticity at the level of the social relationships, mating patterns, and social organization. Expand
It was found that inter-individual variability is significantly higher than intra- individual variability, which implies that females can be distinguished by their great-calls, although this was not examined during the present study. Expand
Changes In Rhesus Macaque ‘Coo’ Vocalizations during Early Development
Growth is the main factor accounting for the observed changes in ‘coo’ structure of young rhesus macaques, Macaca mulatta, and all parameters that correlated with age could be explained by variation in weight. Expand
Wild Chimpanzees Produce Group‐Specific Calls: a Case for Vocal Learning?
It is suggested that chimpanzees may actively modify pant hoots to be different from their neighbours, providing support for the vocal learning hypothesis. Expand
Influences of ecological factors on vocal communication in olive baboons (Papio hamadryas anubis)
The evolutionary approach confirms a larger flexibility in usage than in structure of vocalisations between baboon populations and taxa, which is expected to be highest in usage. Expand


Barbary macaques categorize shrill barks into two call types
  • J. Fischer
  • Medicine, Psychology
  • Animal Behaviour
  • 1998
I tested whether monkeys categorized calls according to the eliciting stimulus and whether their perception of calls coincided with the classification derived from the acoustic analysis, suggesting that call categorization is influenced by experience. Expand
Pygmy marmosets, Cebuella pygmaea, modify vocal structure in response to changed social environment
Greater vocal plasticity across age ranges than has been hitherto described for a non-human primate is suggested and the importance of social factors in vocal architecture is suggested. Expand
Individual Differences in Vocalisations of Young Barbary Macaques (Macaca Sylvanus): a Multi-Parametric Analysis To Identify Critical Cues in Acoustic Signalling
It had been shown that Barbary macaque (Macaca sylvanus) mothers are able to individually recognise their offspring by its vocal signals, but it remained unclear which acoustical cues may account forExpand
Dialects in wild chimpanzees?
Chimpanzees emit a loud, species‐typical long distance call known as the pant hoot. Geographic variation between the pant hoots of chimpanzees living in two neighboring populations, the MahaleExpand
Design features and developmental modification of pigtail macaque, Macaca nemestrina, agonistic screams
Scream vocalizations produced by pigtail macaques during agonistic encounters were studied using spectrographic and multivariate analyses. These calls are important in the recruitment of support fromExpand
Ontogeny of squirrel monkey calls under normal conditions and under acoustic isolation.
Clear evidence is presented that the vocal repertoire of squirrel monkey infants raised under normal conditions and those raised in the absence of species-specific auditory input are virtually identical. Expand
Vocalizations of rhesus (Macaca mulatta) and Japanese (M. fuscata) macaques cross-fostered between species show evidence of only limited modification.
The outcome suggests that environmentally mediated modification of vocal behavior may have occurred, but that the resulting changes were quite limited. Expand
Articulatory and social factors influence the acoustic structure of rhesus monkey vocalizations: a learned mode of production?
  • M. Hauser
  • Psychology, Medicine
  • The Journal of the Acoustical Society of America
  • 1992
Results are presented that show that the acoustic structure of the "coo" vocalization of rhesus macaques (Macaca mulatta) varies between members of different matrilines, suggesting the possibility of supralaryngeal filtering. Expand
The sociobiology of male–infant interactions in Barbary macaques, Macaca sylvanus
Abstract Unlike most Old World monkeys, male Barbary macaques frequently associate with and care for infants shortly after birth. Three functional hypotheses have been proposed to explain male–infantExpand
'Food' Calls Produced By Adult Female Rhesus (Macaca Mulatta) and Japanese (M. Fuscata) Macaques, Their Normally-Raised Offspring, and Offspring Cross-Fostered Between Species
We tested a recent claim that rhesus and Japanese macaque offspring cross-fostered between species exhibit vocal learning by producing 'food' calls typical of their adoptive rather than their geneticExpand