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Behavioral Ecology and Conservation of the Critically Endangered Tonkin
Snub-nosed Monkey

Wildlife Reserves Singapore has been supporting studies on the Critically Endangered Tonkin Snub-nosed Monkey since 2009. The Tonkin Snub-nosed Monkey (Rhinopithecus avunculus) is consistently listed amongst the “Top 25 Most Endangered Primates” in the world. The species is endemic to as few as four small sites in the north of Vietnam, one of which is the Khau Ca forest in Ha Giang Province where the presence of Tonkin Snub-nosed Monkeys were first confirmed in 2001 by Vietnamese researcher Dr Le Khac Quyet. Since this discovery, he has been leading efforts to better understand and protect this population. The support provided by WRS has led to better enforcement of illegal logging and poaching activities in the area. An estimated population of 104 individuals is reproducing successfully with 12 newborns observed in 2013. Further work on the long-term genetic viability of this isolated population is currently being conducted.

Top: Patrolling unit.
Bottom: Tonkin snub-nosed monkey.

Reintroduction of Delacour's langur into Van Long Nature Reserve

Wildlife Reserves Singapore supported the conservation of Delacour's langur in Van Long Nature Reserve. The Delacour’s langur (Trachypithecus delacouri) is a “Critically Endangered” primate species listed amongst the “World’s 25 most endangered primates”, and endemic only to Vietnam. The largest population of the Delacour’s langur exists in Van Long Nature Reserve. This population is now highly fragmented due to human activities and highly threatened through hunting pressure, which dramatically reduced the population in recent years. WRS supported the introduction of Delacour’s langur between fragmented populations, which is needed to improve the genetic diversity and the long-term survivability of the population.

Delacour’s langur

Conservation of the Threatened River Terrapins

Wildlife Reserves Singapore and Wildlife Conservation Society (WCS) have joined efforts towards conservation of endangered turtles in Southeast Asia. The Vietnamese pond turtle (Mauremys annamensis) is one the of many species that are being focused on in this project. Also known as the Annam Leaf Turtle, it is critically endangered. It is extremely rare and only found in a small area in central Vietnam. It was abundant in the 1930s; after 1941 it was not sighted in the wild for 65 years until a population was rediscovered in 2006. Despite its rarity, the Vietnamese pond turtle is still being traded as food. Its habitat is also threatened with agricultural expansion, aquaculture, and development. As part of the conservation efforts for this species, the Singapore Zoo holds an assurance colony for potential future reintroduction of their offspring back into the wild in Vietnam.

Vietnamese pond turtle