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Javan Gibbon (Hylobates moloch): Population and Conservation

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Indonesian Primates

Abstract

Java marks the most southwesterly limits for the range of the Asian primates. There is fossil evidence that the orangutan (Pongo pygmaeus) (Storm et al. 2005), siamang (Symphalangus syndactylus) (Hooijer 1960), and the pigtailed macaque (Macaca nemestrina) (Aimi 1981) once lived in Java. Those local extinctions are quite ancient, but other extinctions, such as the Javan tiger (Panthera tigris javanicus), date back only a few decades, reflecting the severity of environmental degradation in the island (Siedensticker 1987). There are five primates living in Java today, of which two, the Javan gibbon (Hylobates moloch) and the grizzled leaf monkey (Presbytis comata), are now categorized on the IUCN Red List as endangered (IUCN 1996). The remaining species, the Javan leaf monkey (Trachypthecus auratus) and Javan slow loris (Nycticebus coucang javanicus) are ranked as vulnerable, while the long-tailed macaque (Macaca fascicularis) is still relatively abundant (Supriatna and Wahyono 2000; Supriatna et al. 2001).

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Acknowledgments

We thank our colleagues who helped us in gathering data and publications, and assisted us during fieldwork and literature studies on the Javan gibbon. We are most grateful to our colleagues at the Department of Biology, University of Indonesia for their support, especially the students who have been working with us in the study of the Javan gibbon. We also thank Dr. Didi Indrawan, Guritno Djanubudiman, R. M. Hidayat of Indonesia Biodiversity and Development Foundation (BIODEV), Anton Ario, Hendi Sumantri, Dr. Barita Manullang, William Marthy, Ermayanti, Iwan Wijayanto, and the entire staff at Conservation International Indonesia. Many thanks to our friends and supporters at the Javan Gibbon Foundation and the International Gibbon Foundation.

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Supriatna, J., Mootnick, A., Andayani, N. (2010). Javan Gibbon (Hylobates moloch): Population and Conservation. In: Gursky, S., Supriatna, J. (eds) Indonesian Primates. Developments in Primatology: Progress and Prospects. Springer, New York, NY. https://doi.org/10.1007/978-1-4419-1560-3_5

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