Status and Conservation of Golden Langur in Chakrashila Wildlife Sanctuary, Assam, India

A comprehensive survey of the golden langur (Trachypithecus geei), an endangered primate endemic to India and Bhutan, revealed 474 individuals across 64 troops in Chakrashila Wildlife Sanctuary, Assam. This represents the first systematic count in this critical protected habitat, providing vital baseline data on population structure, group dynamics, and threats. The study, conducted between December 2006 and January 2007 using line transects and total counts, found a mean group size of 7.4 individuals, with an adult sex ratio of 1:1.53 and a high infant-to-adult female ratio of 1:0.617. The population age structure was balanced, comprising 49.8% adults, 33.5% juveniles, and 16.7% infants. Notably, domestic dogs (Canis familiaris) and illegal felling emerged as significant threats to the langur's survival in this protected area. These findings underscore the urgent need for targeted conservation strategies to safeguard the golden langur and its habitat within Chakrashila Wildlife Sanctuary.

Chetry, D., Chetry, R., Ghosh, K., & Bhattacharjee, P. C. (2010). Status and Conservation of Golden Langur in Chakrashila Wildlife Sanctuary, Assam, India. Primate Conservation, 25(1), 81–86. https://doi.org/10.1896/052.025.0112