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Title:	Population size and positional behaviour of silvered leaf monkey (Trachypithecus cristatus) in Bukit Melawati, Kuala Selangor
Authors:	Norlinda Mohd Daut (P81778)
Supervisor:	Badrul Munir Md. Zain, Prof. Dr.
Keywords:	Trachypithecus cristatus Silvered leaf monkey Species and habitat Universiti Kebangsaan Malaysia -- Dissertations Dissertations, Academic -- Malaysia
Issue Date:	23-Feb-2021
Description:	Population density and positional behaviour of Trachypithecus cristatus at Bukit Melawati were studied with five objectives i) to determine the morphology and physical characteristics according to age categories and sex of T. cristatus, ii) to investigate the population density, iii) to determine the duration and frequency of positional behaviour, iv) to investigate the strata level preferences between age categories and sex and v) to investigate type of food taken by T. cristatus at Bukit Melawati, Kuala Selangor. The evaluation of population density involving the group size, group composition and home range was conducted from December 2016 to June 2017. Using the total count method, each group was followed by foot. Areas of the group members observed during their daily activities and movement were used as home range estimators. The home range size for each group was analyzed using Minimum Convex Polygon (MCP). A total of 270 hours of positional data was collected every 2 to 3 months from June 2016 to September 2019. Positional behaviour was observed using focal sampling. A total of 7 groups (193 individuals) were found, including a male band group. Compared in 2005, the number of populations is maintained with no significant differences (0.824 = p > 0.05). Decreased in number in juvenile, infant and the total age ratio shows a potential of slow depletion in this population. Their home range appears to be overlapped each other and the size of the home range increase as the total number of members elevates. Postural behaviour data revealed T. cristatus often used sitting (82.47%), with a contribution of male 37.58% and female 44.99%. They were most frequently used sitting for feeding and resting. Followed by clinging, quadrupedal standing, sprawling, crouching, lying and bipedal standing. Overall juveniles contributed the highest score in locomotion behaviour (46.8%), among age categories. Quadrupedal walking 35.3% was the most displayed in locomotion behaviour followed by leaping, vertical climbing, quadrupedal running, suspensory locomotor, bridging, rolling, bipedal walking and tripedal walking. Female was found to spend more time in postural behaviour. T. cristatus spent more time at the strata level which makes it easy to access food from visitors (0 ≤ 2 m). However, females chose the middle and the high level when resting and feeding natural foods from trees. Male was frequently found at the lowest level 0 < 0.5 m (53%) and highest level more than 6 m (61.5%). This study suggests that age categories and sex affect positional behaviour. Population density provides some aspects in social structure that describes social and competitive activities that exist inter and intra-group. This finding helps the state government particularly the Board Council of Kuala Selangor to plan conservation strategies of T. cristatus and its habitat. It also provides useful information on the species and habitat for management in promoting sustainable ecotourism of nature.,Ph.D
Pages:	176
Call Number:	QL737.P93.N637 2021 tesis
Publisher:	UKM, Bangi
Appears in Collections:	Faculty of Science and Technology / Fakulti Sains dan Teknologi

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