Access

You are not currently logged in.

Access your personal account or get JSTOR access through your library or other institution:

login

Log in to your personal account or through your institution.

If you need an accessible version of this item please contact JSTOR User Support

Communication within and between Family Groups of Siamang (Symphalangus syndactylus)

David J. Chivers
Behaviour
Vol. 57, No. 1/2 (1976), pp. 116-135
Published by: Brill
Stable URL: http://www.jstor.org/stable/4533736
Page Count: 24
  • Read Online (Free)
  • Download ($34.00)
  • Subscribe ($19.50)
  • Cite this Item
If you need an accessible version of this item please contact JSTOR User Support
Communication within and between Family Groups of Siamang (Symphalangus syndactylus)
Preview not available

Abstract

The close coordination of family groups of siamang (Symphalangus syndactylus) by subtle visual signals contrasts with the very loud and complex calls which figure prominently in relations between groups to space them effectively through the habitat. The siamangs' repertoire of facial expressions, vocalisations, and expressive gestures, postures and movements are contrasted with that of the white-handed gibbon, Hylobates lar. The ways in which siamang move about their small range in a highly coordinated manner, with frequent pauses for resting and grooming, and for feeding, are described. Reference is made to the structure of group calling bouts and to conflicts between groups. There is discussion of the possibility that the group cohesion results from group members becoming able to predict accurately the movements of each other, and of the possible way in which aggressive acts are countered by conciliatory ones. /// Nous remarquons que les subtiles signaux visuels, qui effectuent une coordination serrée entre les membres d'un groupe familial du siamang (Symphalangus syndactylus), sont nettement différents des appels bruyants et complexes qui servent, dans les relations entre groupes, à les disperser à travers le terrain. Le répertoire d'expressions faciales, d'appels, de gestes expressifs, d'attitudes et de mouvements est comparé à celui du gibbon (Hylobates lar). Nous décrivons la façon fortement coordinée dont un group de siamangs se deplace à travers son domaine restreint, s'arrêtant souvent pour se reposer, pour se soigner, ou bien pour se nourrir. Nous discutons la structure des appels de groupe ainsi que les conflits entre les groupes. Nous suggérons qu'un groupe serait d'autant plus cohérent, plus les membres deviendraient capables de prévoir avec précision les mouvements des autres, et plus leurs actions agressives seraient contrebalancées par des gestes réconciliants.

Page Thumbnails

  • Thumbnail: Page 
[116]
    [116]
  • Thumbnail: Page 
117
    117
  • Thumbnail: Page 
118
    118
  • Thumbnail: Page 
119
    119
  • Thumbnail: Page 
120
    120
  • Thumbnail: Page 
[unnumbered]
    [unnumbered]
  • Thumbnail: Page 
[unnumbered]
    [unnumbered]
  • Thumbnail: Page 
[unnumbered]
    [unnumbered]
  • Thumbnail: Page 
[unnumbered]
    [unnumbered]
  • Thumbnail: Page 
121
    121
  • Thumbnail: Page 
122
    122
  • Thumbnail: Page 
123
    123
  • Thumbnail: Page 
124
    124
  • Thumbnail: Page 
125
    125
  • Thumbnail: Page 
126
    126
  • Thumbnail: Page 
127
    127
  • Thumbnail: Page 
128
    128
  • Thumbnail: Page 
129
    129
  • Thumbnail: Page 
130
    130
  • Thumbnail: Page 
131
    131
  • Thumbnail: Page 
132
    132
  • Thumbnail: Page 
133
    133
  • Thumbnail: Page 
134
    134
  • Thumbnail: Page 
135
    135