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v1i1.12
Volume 1 | Number 1 | April 2009 v1i1.12 taprobanica 1 1

v1i1.12

Volume 1 | Number 1 | April 2009
Major Article
ISSN: 1800-427X (print)
eISSN: 1800-427X (online)
DOI:10.47605/tapro.v1i1.12

Submitted date: 08 January 2009
Accepted date: 11 January 2009
Published date: 06 April 2009
Pp. 66–73.

SOCIAL BEHAVIOURS OF CAPTIVE Trachypithecus cristatus (MAMMALIA: CERCOPITHECIDAE) IN THE NATIONAL ZOOLOGICAL GARDENS OF SRI LANKA

A.A. Thasun Amarasinghe*, W. Madhava S. Botejue & Lee E. Harding
*Corresponding author. E-mail: thasun.taprobanica@gmail.com

Abstract
Trachypithecus cristatus (Silvered Leaf Monkey or Silvered Lutung) occur on the Malay Peninsula, Sumatra, Borneo and nearby islands and live mainly in uni-male, female-bonded groups. This study presents preliminary data on social behaviours for Silvered Leaf Monkey in captivity. Behavioural observations were conducted on one group (one adult male, four adult females, three juvenile males and four juvenile females). Data were collected on 30 of the 60 calendar days at the National Zoological Gardens, Dehiwala, Sri Lanka. All behaviours including agonistic and dominance-related, locomotion, feeding and infant-related behaviours were included in the analysis. Unlike in wild populations, we found a clear dominance hierarchy among females.

Key words : captive behaviour, dominance, hierarchy, langur, Sri Lanka, Trachypithecus cristatus
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