The Diversity of Small Apes and the Importance of Population-Level Studies.- Biogeography.- Evolutionary Relationships Among the Gibbons: A Biogeographic Perspective.- Genetic Differentiation of Agile Gibbons Between Sumatra and Kalimantan in Indonesia.- Vocal Diversity of Kloss's Gibbons (Hylobates Klossii) in the Mentawai Islands, Indonesia.- Phylogeography of Kloss's Gibbon (Hylobates Klossii) Populations and Implications for Conservation Planning in the Mentawai Islands.- Individual and Geographical Variability in the Songs of Wild Silvery Gibbons (Hylobates Moloch) on Java, Indonesia.- The Fossil Record of Gibbons.- Diet and Community Ecology.- Hylobatid Diets Revisited: The Importance of Body Mass, Fruit Availability, and Interspecific Competition.- Competition and Niche Overlap Between Gibbons (Hylobates albibarbis) and Other Frugivorous Vertebrates in Gunung Palung National Park, West Kalimantan, Indonesia.- The Seed Dispersal Niche of Gibbons in Bornean Dipterocarp Forests.- The Relationship Between Ecology and Social Organization.- Ecology and the Social System of Gibbons.- The Ecology and Evolution of Hylobatid Communities: Causal and Contextual Factors Underlying Inter- and Intraspecific Variation.- Seasonal Home Range Use and Defendability in White-Handed Gibbons (Hylobates lar) in Khao Yai National Park, Thailand.- Mating Systems and Reproduction.- Monogamy in Mammals: Expanding the Perspective on Hylobatid Mating Systems.- Monitoring Female Reproductive Status in White-Handed Gibbons (Hylobates lar) Using Fecal Hormone Analysis and Patterns of Genital Skin Swellings.- Patterns of Infant Care in Wild Siamangs (Symphalangus syndactylus) in Southern Sumatra.- The Social Organization and Mating System of Khao Yai White-Handed Gibbons: 1992-2006.- Conservation Biology.- Status and Conservation of Yellow-Cheeked Crested Gibbons (Nomascus gabriellae) in the Seima Biodiversity Conservation Area, Mondulkiri Province, Cambodia.- The Distribution and Abundance of Hoolock Gibbons in India.- Census of Eastern Hoolock Gibbons (Hoolock leuconedys) in Mahamyaing Wildlife Sanctuary, Sagaing Division, Myanmar.- The Population Distribution and Abundance of Siamangs (Symphalangus syndactylus) and Agile Gibbons (Hylobates agilis) in West Central Sumatra, Indonesia.- Canopy Bridges: An Effective Conservation Tactic for Supporting Gibbon Populations in Forest Fragments.- The Role of Reintroduction in Gibbon Conservation: Opportunities and Challenges.- Saving the Small Apes: Conservation Assessment of Gibbon Species at the 2006 Asian Primate Red List Workshop.
It is a great honor to be asked to introduce this exciting new volume, having been heavily involved in the first comprehensive synthesis in the early 1980s. Gibbons are the most enthralling of primates. On the one hand, they are the most appealing animals, with their upright posture and body shape, facial markings, dramatic arm-swinging locomotion and suspensory postures, and devastating duets; on the other hand, the small apes are the most diverse, hence biologically valuable and informative, of our closest relatives. It is hard for me to believe that it is 40 years to the month since I first set foot on the Malay Peninsula to start my doctoral study of the siamang. I am very proud to have followed in the footsteps of the great pioneer of primate field study, Clarence Ray Carpenter (CR or Ray, who I was fortunate to meet twice, in Pennsylvania and in Zurich), first in Central America (in 1967) and then in Southeast Asia. It is 75 years since he studied howler monkeys on Barro Colorado Island in the Panama Canal Zone. It is 70 years since he studied the white-handed gibbon in Thailand.
A reference resource for researchers and students interested in the small apes specifically, as well as researchers interested in the gibbon perspective on a number of theoretical issues in primatology