Daerah Jelajah dan Penggunaan Ruang Kukang Jawa (Nycticebus javanicus) Di Taman Nasional Gunung Halimun Salak, Jawa Barat

Javan slow loris (Nycticebus javanicus) is a slow moving nocturnal prosimian primate. Javan slow lorises are considered critically endangered by International Union for the Conservation of Nature. To date, there is limited source information available regarding wild loris ecology and behavior. In this study, home range areas and use space of wild Javan slow loris was carried out in Mount Halimun-Salak National Park. This study aims to measure home range size and to analyze activity budgets in natural forest conditions. Kernel Home Range methods were used to analyze home range areas, while Point Centered Quarter methods were used to collect habitat data, and five minute Instantaneous-Focal Animal Sampling was used to observe and record behavioral data. Two adult female lorises were observed. Analysis showed contiguous home range sizes of 5.43 and 5.58 hectares for Individuals I and II, respectively. These home ranges were larger than that reported in Malaysian Nycticebus coucang. Behavioral analysis showed that daily activities were dominated by travel, feeding, active, and foraging, which took place primarily in the lower canopy stratum, whereas sleeping typically occurred in the medium canopy stratum. The use of space of Javan slow loris correlated with height, substrat, contact, and size of branch.

Dusky Langurs Trachypithecus obscurus (Reid, 1837) (Primates: Cercopithecidae) in Singapore: potential origin and conflicts with native primate species

The introduction of exotic species can have detrimental effects on local populations via factors such as resource competition and new threats from disease. Singapore has three native species of non-human primates: Sunda Slow Loris Nycticebus coucang, Long-tailed Macaque Macaca fascicularis, and Raffles’ Banded Langur Presbytis femoralis. Over the past few months, several non-native Dusky Langurs Trachypithecus obscurus were observed in Singapore. We document our observations, compile reports from social media, and attempt to assess the potential impacts on local primates. Whenever Dusky Langurs were encountered, we recorded the date, time, GPS coordinates, group demographics, and behaviour, including interactions with native primates. We also monitored sighting reports of Dusky Langurs posted on local major Facebook groups from 30 December 2019 to 31 January 2020, and privately messaged the person(s) for more information. On 31 August 2019, three Dusky Langurs were seen near a residential area in the northern part of Singapore, and two to three individuals were reported on 14 subsequent occasions. During one encounter on 18 January 2020, an adult male Long-tailed Macaque chased a group of Dusky Langurs from a feeding tree. The next day the same group of Dusky Langurs chased a group of 11 Banded Langurs from another feeding tree. The Dusky Langurs appeared to be healthy and wild, indicating that they may have swum across the Johor Strait and/or traveled on the Johor-Singapore Causeway from Malaysia. Further monitoring of these Dusky Langurs will be required to assess their impact on local primates.

Space Using of Sumatra Slow Loris (Nycticebus coucang) Release by International Animal Rescue Indonesia (IARI) in Protected Forest Batutegi Kalijernih Tanggamus Lampung

Nycticebus coucang had the closely related to their habitat. The observation research to determine using of (1) forest stratum, (2) substrate space (3) canopy space (4) vegetation types and (4) daily behavior of N.coucang in Protected Forest KPHL Batutegi Block Kalijernih, Tanggamus Lampung, February-May 2014, used the explore, one zero sampling and rapid assessment methods. The results of the 60 days observation was found 50 hours N.coucang behavior observed for a total of 3652 data, N.coucang used (1) forest floor (57%), understory layer (42,7%), canopy layer (0,2%), (2) A substrate (4,3%), B substrate (13%), C substrate (43,7%), D substrate (38,3%), E substrate (0,4%) and F substrate (0,08%), (3) middle (24,6%), top middle (16,7%), middle down (14,7%), middle edge (20,8%), top edge (13,4%), bottom edge (0,9%), (4) vegetation type are stake (46,2%), pole (33,6%) and tree (20%), (5) to did daily behavior are travelling (56,7%), feeding (7,5%), forage (25,9%), grooming (5,7%), active (3,6%), inactive (0,2%), and defecating (0,02%. Keywords: Selection and space using of forest, Nycticebus coucang, KPHL Batutegi