Abstract # 121:

Scheduled for Saturday, June 21, 2008 08:15 AM-08:25 AM: Session 13 (Meeting Room 2DEF) Oral Presentation

Ecology and Activity profile of Hoolock gibbon in Arunachal Pradesh, India

J. Biswas1, J. Das1,2, A. Das1, D. Chetry1 and P. C. Bhattacharjee1,3
1Primate Research Centre NE India, House No 4, Byelane 3, Ananda Nagar, Pandu, Guwahati, Assam 781012, India, 2Wildlife Arease Development and Welfare Trust, CCF Territorial Office, Guwahati 781001, Assam, India, 3Department of Zoology, Gauhati University, Guwahati 781014, Assam, India
     Two groups of Hoolock gibbons, each from Miao WLS and Turung Reserved Forest of Arunachal Pradesh, India were studied for one year from May 2005 to April 2006. During the study, over 27360 focal samples were collected. The Miao group spent 21.7% time in feeding, 51.5% in resting, 12% in locomotion, 1.7% in monitoring and surveillances, 6.3% in play, 2% in vocalization and 4.8% in other social interaction. The Turung group spent 23.7% time in feeding, 52.6% in resting, 10.7% in locomotion, 2.2% in monitoring and surveillances, 4% in play, 3.4% in vocalization and 3.3% in other social activities. Fruits constitute the major food items for both the groups (47.1% & 64.4%). Leaves constitute the second major food item (23.3% and 18.4%). However the Miao group consumed comparatively large amounts of young shoots (11.4%) than the Turung group (0.6%). Both the groups spent considerable amount of time consuming insect and insect parts (4.3% of total feeding time). Activity patterns suggest similar trends where the groups spent less time in feeding and foraging than resting and other maintenance activity which is quite different from other studies in Borajan RF, Assam and Namdapha NP, Arunachal Pradesh. These findings clearly demonstrate that the nature and distribution of food resources are the ultimate guiding force for allocating time to various activities in different habitats.