Suchergebnisse

Golden langurs (Trachypithecus geei) in Bhutan have received little research attention in the anthropic environments where most of the population lives. We recorded group sizes and compositions and documented sleep sites for 24 golden langur groups living in a biological corridor (N = 9) and near a human settlement (N = 15) in central Bhutan. We used scan sampling to document behaviors and direct observation and camera traps to record potential predators, and we recorded occurrences of mortality, including two cases of electrocution, one case of roadkill, and one langur skull recovered from a possible leopard prey cache. Golden langur groups were on average significantly larger near human settlements (13.73 individuals) than in the biological corridor (9.55 individuals), and the adult sex ratio was greater near human settlements. The golden langurs usually slept in more than one tree, and our preliminary results indicated rare re-use of the same sleep site. Golden langurs in our study area most often slept in Sapium insigne trees. Sleep trees' mean DBH was 51.58 cm and the mean height was 19.37 m. We intend for our preliminary data to establish the foundation for future research on the behavior and ecology of golden langurs in Bhutan.

Issues in Ape and Human Evolution -- African Apes as Time Machines -- Primate Divergence Times -- The Cerebellum: An Asset to Hominoid Cognition -- Bonobos, the "Forgotten Ape"? -- The Status of Bonobo (Pan Paniscus) in the Democratic Republic of Congo -- The Status of Bonobos in Their Southernmost Geographic Range -- Current Situation of Bonobos in the Luo Reserve, Equateur, Democratic Republic of Congo -- Chimpanzees, the Best Known Ape -- Pan in Pandemonium -- Predation of Mammals by the Chimpanzees of the Mahale Mountains, Tanzania -- Representational Capacities in Chimpanzees: Numerical and Spatial Reasoning -- Gorillas, the Greatest of the Apes -- The Status of Gogillas Worldwide -- Twenty-Seven Years of Project Koko and Michael -- Who's in Charge? Observations of Social Behavior in a Captive Group of Western Lowland Gorillas -- Physiological Bases for Behavior and Aging: Great Apes and Humans -- The Great APE Aging Project: A Resource for Comparative Study of Behavior, Cognition, Health, and Neurobiology -- An International Database for the Study of Diabetes, Obesity, and Aging in Great Apes and Other Nonhuman Primates -- Studies of Age-Related Neuronal Pathology in Great Apes -- Metabolites of Ovarian Hormones and Behavioral Correlates in Captive Female Bonobos (Pan Paniscus) -- Sexual Motivation of Male Chimpanzees During the Female Cycle, Including Preliminary Data on Age Effects -- The Bushmeat Crisis: African Apes at Risk -- Bushmeat, Primate Kinship, and the Global Conservation Movement -- Status of the Proposed Lomako Forest Bonobo Reserve: A Case Study of the Bushmeat Trade -- What Happened to Gorilla Gorilla Uellensis?: A Preliminary Investigation -- Apes, Persons, and Bioethics.