Another threat to François' langurs is the destruction of their habitat. Range. Covering approximately 53,530 acres, the conservation area will protect habitat critical for Francois’ Langur, as well as a host of other endangered and threatened species. This species was first noticed by Auguste Francois (1857-1935), a French consul at Lungchow in southern China, who observed individuals on cliffs along the Longkiang River in China. Scientific Name Trachypithecus francoisi. In the wild, they eat a diet made up largely of leaves, as well as fruit, flowers and cultivated crops. They prefer moist forests or well-sheltered rocky areas, depending on the season. They occupy evergreen broadleaf, mostly limestone forests. Photo Taken At Omaha'S Henry Doorly Zoo And Aquarium, Omaha, Nebraska, USA. Mammalia. – Wikipedia . They occupy evergreen broadleaf, mostly limestone forests. Threats Logging and the expansion of agriculture has destroyed the habitat of the François langur. Good Detective Strategies and Helpful Hints, 10 of the most well known primate species, 10 primate species you probably never heard of, 10 of the most endangered primates species, The Alphabet Soup of Conservation-Video and Introduction, Life in Tropical Rainforests Introduction, Grivets, Tantalus, Malbroucks, and Vervets. For instance, no Francois’ langurs were found in an ideal habitat along the upstream areas of the Mayang River, which used to be a main distribution area of langurs due to low elevation, steep slope, and proximity to water. Leaf monkeys have long limbs and tails, long slender hands and feet, and very short thumbs. When they do go to forage they tend to travel along the same route and return to the same sleeping site for many consecutive nights to avoid predation]. Would you like Wikipedia to always look as professional and up-to … The primary threat to the langur is hunting, mainly for traditional … Southern Guangxi province of China, northern Vietnam, and west central Laos. The Francois’ langur population trend is listed as “decreasing.”. This color changes quickly and reaches black by one year of age. Estimated Wild Population. Location Vietnam. The species is distributed from Southwestern China to northeastern Vietnam. Endangered Francois' Langur. geei) from Bhutan, the spectacled langur (T. obscurus) from the Malay Peninsula, with white eye rings and pink muzzle, and a group of black langurs with white markings on the head and body, including François’ langur (T. francoisi) and its relatives, which live in the limestone country of northern… There is reason to believe the species has declined by at least 50% over the past 36 years due primarily to habitat loss and hunting. Quite the same Wikipedia. François’ Langurs prefer semi-tropical monsoon, moist tropical and subtropical rainforests in limestone. Our François group originally came to San Francisco as a gift from the People’s Republic of China. Langurs can survive in different types of ecosystems: warm and humid swamps, dry torn scrubs, deserts, lowland and mountain forests and even urban areas. As leaf eating monkeys, long periods of rest between feedings are required for the lengthy digestive process. Human population and livestock profiles in the reserve. It sleeps either on ledges or in caves, with its preference being in the cave. The preferred habitat of François' langur is a karst topography; limestonecliffs and caves of tropical and subtropical zones. Habitat selection of Francois' Langur (Trachypithecus francoisi francoisi) was studied by using Resource Selection Functions and Resource Selection Index in the Jinfo Mountain Natural Reserve from March to May of 2007. called François’ leaf monkey, Tonkin leaf monkey, or white side-burned black langur. Two subspecies are recognized: T. p. poliocephalus in Cát Bà Island, Vietnam, and T. p. leucocephalus in Guangxi, China.The former (the nominate subspecies), often known as the golden-headed or Cat Ba langur, is among the rarest primates in the world, and possibly the rarest primate in … Additionally, a study in Mayanghe National Nature Reserve concluded that approximately only 25% of the reserve was suitable habitat for the Francois’ langur because of the threats posed from increased human activity. HABITAT AND ECOLOGY. Young are weaned at around two years; at about three or four years old juvenile males will leave the group and form bachelor groups or join another family group. In langur. Conservation status François langurs are listed under Appendix II of CITES. This species is widespread, but populations are highly fragmented and isolated. There are 15 different subspecies of langurs that can be found in India, Sri Lanka, Burma, Pakistan and Bangladesh. It appeared that in the seasonal and disturbed habitat, feeding decisions and diet composition of the langur may be driven more by food availability, and less by animal's selectivity, than at other sites. Some subspecies of langur are endangered due to habitat loss, … This species was first brought to notice by M. François of the French Consul at Lungchow, China, who observed groups of these animals on rocky shores between Nanning and Kuohua. Francois langurs will also choose their sleeping habitat depending upon foraging availability. Just better. Native to China, they are now endangered because of poaching and logging. François langurs live in tropical forests and sheltered limestone hills in China, Vietnam and Laos. The Case of the Disappearing Habitat: The Candy Culprit-Get Started! Order. Yajie Zeng. At the Zoo, the François group is fed a diet of leaves, fruit and monkey chow. This species is mostly folivorous, with the remainder of the diet consisting of shoots, fruits, flowers, and bark. François’ langurs live in groups of 4-27 with 12 individuals being an average size consisting of one male, several adult females and their offspring. Therefore, François’ langurs at Nonggang are consis-tent in ranging behavior throughout the year. Francois’ langur (Trachypithecus francoisi) is an endangered primate and endemic to the limestone forests of the tropical and subtropical zone of northern Vietnam and South-west China with a population of about 2,000 individuals. The François' langur (Trachypithecus francoisi), also known as the Francois' leaf monkey, Tonkin leaf monkey, or white side-burned black langur is a species of lutung and the type species of its species group.It is one of the least studied of the species belonging to the Colobinae subfamily.. Also called arm swinging, is a form of arboreal locomotion in which primates swing from tree limb to tree limb using only their arms. © 2017-2020 New England Primate Conservancy. The white-headed langur (Trachypithecus poliocephalus) is a critically endangered langur. They are also captured and sold as pets or used … Francois' langur (Trachypithecus francoisi) is an endangered primate and endemic to the limestone forests of the tropical and subtropical zone of northern Vietnam and South-west China with a population of about 2,000 individuals. It is likely that nearby increased human traffic (loud diesel boats, for instance) and other disturbances kept the langurs from settling in this suitable habitat, which therefore negatively impacted this species. Yong Wang . Fast Facts . Learn about this topic in these articles: characteristics of langurs. Spread the word about langur conservation. By living and sleeping in these limestone … The results indicate that François' langur copes with habitat alterations by broaden its dietary breadth; this has implications for the adaptive significance of dietary … Can you guess where they got their name? Their range is very small, and habitat destruction has lead to declining numbers in recent years, causing the IUCN to place special protections on the species to keep it from becoming critically endangered and … 3.2. IUCN Red List Status Endangered. Trachypithecus francoisi. 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