| Records |
| Author |
Rendall, D.; Cheney, D.L.; Seyfarth, R.M. |
| Title |
Proximate factors mediating “contact” calls in adult female baboons (Papio cynocephalus ursinus) and their infants |
Type |
Journal Article |
| Year |
2000 |
Publication |
Journal of comparative psychology (Washington, D.C. : 1983) |
Abbreviated Journal |
J Comp Psychol |
| Volume |
114 |
Issue |
1 |
Pages |
36-46 |
| Keywords |
Animals; Animals, Wild; Botswana; Female; *Maternal Behavior; Motivation; Orientation; Papio/*psychology; Social Environment; Sound Spectrography; *Vocalization, Animal |
| Abstract |
“Contact” calls are widespread in social mammals and birds, but the proximate factors that motivate call production and mediate their contact function remain poorly specified. Field study of chacma baboons (Papio cynocephalus ursinus) revealed that contact barks in adult females were motivated by separation both from the group at large and from their dependent infants. A variety of social and ecological factors affect the probability of separation from either one or both. Results of simultaneous observations and a playback experiment indicate that the contact function of calling between mothers and infants was mediated by occasional maternal retrieval rather than coordinated call exchange. Mothers recognized the contact barks of their own infants and often were strongly motivated to locate them. However, mothers did not produce contact barks in reply unless they themselves were at risk of becoming separated from the group. |
| Address |
Department of Psychology, University of Pennsylvania, USA. d.rendall@uleth.ca |
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English |
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| ISSN |
0735-7036 |
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| Notes |
PMID:10739310 |
Approved |
no |
Call Number  |
refbase @ user @ |
Serial |
695 |
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| Author |
Owren, M.J.; Seyfarth, R.M.; Cheney, D.L. |
| Title |
The acoustic features of vowel-like grunt calls in chacma baboons (Papio cyncephalus ursinus): implications for production processes and functions |
Type |
Journal Article |
| Year |
1997 |
Publication |
The Journal of the Acoustical Society of America |
Abbreviated Journal |
J Acoust Soc Am |
| Volume |
101 |
Issue |
5 Pt 1 |
Pages |
2951-2963 |
| Keywords |
Animals; Female; *Papio; Sound Spectrography; *Vocalization, Animal |
| Abstract |
The acoustic features of 216 baboon grunts were investigated through analysis of field-recorded calls produced by identified females in known contexts. Analyses addressed two distinct questions: whether the acoustic features of these tonal sounds could be characterized using a source-filter approach and whether the acoustic features of grunts varied by individual caller and social context. Converging evidence indicated that grunts were produced through a combination of periodic laryngeal vibration and a stable vocal tract filter. Their acoustic properties closely resembled those of prototypical human vowel sounds. In general, variation in the acoustic features of the grunts was more strongly related to caller identity than to the social contexts of calling. However, two acoustic parameters, second formant frequency and overall spectral tilt, did vary consistently depending on whether the caller was interacting with an infant or participating in a group move. Nonetheless, in accordance with the general view that identity cueing is a compelling function in animal communication, it can be concluded that much of the observed variability in grunt acoustics is likely to be related to this aspect of signaling. Further, cues related to vocal tract filtering appear particularly likely to play an important role in identifying individual calling animals. |
| Address |
Department of Psychology, Reed College, Portland, Oregon 97202, USA. michael.owren@reed.edu |
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English |
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| ISSN |
0001-4966 |
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| Notes |
PMID:9165741 |
Approved |
no |
| Call Number |
refbase @ user @ |
Serial |
698 |
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| Author |
Owren, M.J.; Dieter, J.A.; Seyfarth, R.M.; Cheney, D.L. |
| Title |
Vocalizations of rhesus (Macaca mulatta) and Japanese (M. fuscata) macaques cross-fostered between species show evidence of only limited modification |
Type |
Journal Article |
| Year |
1993 |
Publication |
Developmental psychobiology |
Abbreviated Journal |
Dev Psychobiol |
| Volume |
26 |
Issue |
7 |
Pages |
389-406 |
| Keywords |
Animals; Animals, Newborn; Behavior, Animal; Discrimination Learning; Environment; Female; *Macaca; *Macaca mulatta; Male; Sound Spectrography; *Vocalization, Animal |
| Abstract |
Two rhesus and two Japanese macaque infants were cross-fostered between species in order to study the effects of auditory experience on vocal development. Both the cross-fostered and normally raised control subjects were observed over the first 2 years of life and their vocalizations were tape-recorded. We classified 8053 calls by ear, placed each call in one of six acoustic categories, and calculated the rates at which different call-types were used in different social contexts. Species differences were found in the use of “coo” and “gruff” vocalizations among control subjects. Japanese macaques invariably produced coos almost exclusively. In contrast, rhesus macaques produced a mixture of coos and gruffs and showed considerable interindividual variation in the relative use of one call type or the other. Cross-fostered Japanese macaques adhered to their species-typical behavior, rarely using gruffs. Cross-fostered rhesus subjects also exhibited species-typical behavior in many contexts, but in some situations produced coos and gruffs at rates that were intermediate between those shown by normally raised animals of the two species. This outcome suggests that environmentally mediated modification of vocal behavior may have occurred, but that the resulting changes were quite limited. |
| Address |
California Regional Primate Research Center, University of California, Davis |
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English |
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Edition |
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| ISSN |
0012-1630 |
ISBN |
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Conference |
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| Notes |
PMID:8270122 |
Approved |
no |
| Call Number |
refbase @ user @ |
Serial |
700 |
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| Author |
Seyfarth, R.M.; Cheney, D.L. |
| Title |
Meaning and mind in monkeys |
Type |
Journal Article |
| Year |
1992 |
Publication |
Scientific American |
Abbreviated Journal |
Sci Am |
| Volume |
267 |
Issue |
6 |
Pages |
122-128 |
| Keywords |
Animals; Behavior, Animal; Female; *Haplorhini; Male; Speech; *Vocalization, Animal |
| Abstract |
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| Address |
University of Pennsylvania |
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English |
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| ISSN |
0036-8733 |
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| Notes |
PMID:1439710 |
Approved |
no |
| Call Number |
refbase @ user @ |
Serial |
701 |
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| Author |
Seyfarth, R.M.; Cheney, D.L. |
| Title |
The acoustic features of vervet monkey grunts |
Type |
Journal Article |
| Year |
1984 |
Publication |
The Journal of the Acoustical Society of America |
Abbreviated Journal |
J Acoust Soc Am |
| Volume |
75 |
Issue |
5 |
Pages |
1623-1628 |
| Keywords |
*Acoustics; Animals; Auditory Perception; Cercopithecus/*physiology; Cercopithecus aethiops/*physiology; Cues; Dominance-Subordination; Female; Male; Social Behavior; Sound Spectrography; *Vocalization, Animal |
| Abstract |
East African vervet monkeys give short (125 ms), harsh-sounding grunts to each other in a variety of social situations: when approaching a dominant or subordinate member of their group, when moving into a new area of their range, or upon seeing another group. Although all these vocalizations sound similar to humans, field playback experiments have shown that the monkeys distinguish at least four different calls. Acoustic analysis reveals that grunts have an aperiodic F0, at roughly 240 Hz. Most grunts exhibit a spectral peak close to this irregular F0. Grunts may also contain a second, rising or falling frequency peak, between 550 and 900 Hz. The location and changes in these two frequency peaks are the cues most likely to be used by vervets when distinguishing different grunt types. |
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English |
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| ISSN |
0001-4966 |
ISBN |
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| Notes |
PMID:6736426 |
Approved |
no |
| Call Number |
refbase @ user @ |
Serial |
703 |
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| Author |
Peake, T.M.; Terry, A.M.; McGregor, P.K.; Dabelsteen, T. |
| Title |
Male great tits eavesdrop on simulated male-to-male vocal interactions |
Type |
Journal Article |
| Year |
2001 |
Publication |
Proceedings. Biological sciences / The Royal Society |
Abbreviated Journal |
Proc Biol Sci |
| Volume |
268 |
Issue |
1472 |
Pages |
1183-1187 |
| Keywords |
Animals; Male; Songbirds/*physiology; *Vocalization, Animal |
| Abstract |
Animal communication generally occurs in the environment of a network of several potential signallers and receivers. Within a network environment, it is possible to gain relative information about conspecifics by eavesdropping on signalling interactions. We presented male great tits with the opportunity to gain such information by simulating singing interactions using two loudspeakers. Interactions were presented so that relevant information was not available in the absolute singing behaviour of either individual, only in the relative timing of their songs in the interaction as a whole. We then assayed the information extracted by focal males by subsequently introducing one of the 'interactants' (i.e. loudspeakers) into the territory of the focal male. Focal males responded with a reduced song output to males that had just 'lost' an interaction. Focal males did not respond significantly differently to 'winners' as compared with intruders recently involved in an interaction that contained no consistent information. Focal males also responded by switching song types more often when encountering males that had recently been involved in a low-intensity interaction. These results provide the clearest evidence yet that male songbirds extract information from signal interactions between conspecifics in the field. |
| Address |
Department of Animal Behaviour, Zoological Institute, Tagensvej 16, University of Copenhagen, 2200 Copenhagen N, Denmark. tmpeake@zi.ku.dk |
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English |
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Series Title |
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Series Issue |
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Edition |
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| ISSN |
0962-8452 |
ISBN |
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Medium |
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Expedition |
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Conference |
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| Notes |
PMID:11375107 |
Approved |
no |
| Call Number |
refbase @ user @ |
Serial |
712 |
| Permanent link to this record |
