Langurs' Saltwater Drinking: A Remarkable Adaptation that Sustains Their Survival

The Cat Ba langurs have remarkable genetic traits that help them survive in their isolated environment on Cat Ba Island in Vietnam. One of the remarkable adaptations is the ability to drink salt water. Due to the dramatic decline of its population, the species suffers from genetic impoverishment, high inbreeding and a potentially increased susceptibility to disease. Analysis of their genetic information shows that genetic diversity has been maintained in functionally important areas of their genetic information. This enables the Cat Ba langurs to continue to cope adequately with changing environmental conditions.