Primates of Bhutan and Observations of Hybrid Langurs

  title={Primates of Bhutan and Observations of Hybrid Langurs},
  author={Anwaruddin Choudhury},
  • A. Choudhury
  • Published 1 November 2008
  • Environmental Science, Biology
Abstract: Six, possibly seven, species of non-human primates occur in Bhutan: slow loris (Nycticebus bengalensis), Assamese macaque (Macaca assamensis), Rhesus macaque (Macaca mulatto), Hanuman langur (Semnopithecus entellus), golden langur (Trachypithecus geei), and capped langur (Trachypithecus pileatus). A variant of the Assamese macaque, named Macaca munzala, has also been recorded there. Natural hybrids between golden and capped langur occur in an area in south-central Bhutan. The… 

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

Abstract: The golden langur, Trachypithecus geei, is an endangered species endemic to India and Bhutan. Its distribution is limited to a small forest belt in western Assam in Northeast India and

Conservation Status of the Golden Langur Trachypithecus geei in Chakrashila Wildlife Sanctuary, Assam, India

The golden langur, Trachypithecus geei, is among the world’s 25 most endangered primates. It is endemic to India and Bhutan. Its distribution is limited to a small forest belt in western Assam in

Distribution and Current Status of the Capped Langur Trachypithecus pileatus in India, and a Review of Geographic Variation in its Subspecies

Abstract: In India, the capped langur (Trachypithecus pileatus) occurs in Assam, Arunachal Pradesh, Manipur, Meghalaya, Mizoram, Nagaland, and Tripura. Elsewhere it is found in Bhutan, Bangladesh,

Population abundance and distribution of the endangered golden langur (Trachypithecus geei, Khajuria 1956) in Bhutan

The population estimate of golden langurs in Bhutan is much lower than the current IUCN estimate of 4000 individuals for Bhutan, necessitating a reassessment of its current conservation status due to threats from road kills, electrocution, and development activities like road construction, hydropower, and electrical transmission lines.

Conservation and the Current Status of the Golden Langur in Assam, India, with Reference to Bhutan

The Golden Langur Conservation Project was begun in 1998 with the goal of protecting the golden langur within its entire Indian range, resulting in an increase of the Indian population of golden langurs from c.1,500 in 1997 to c.5,600 langurs in 2007 to 2012 and the lifting of the “in danger” listing for the Manas Biosphere Reserve by UNESCO.

Genetic Diversity and Structure among Isolated Populations of the Endangered Gees Golden Langur in Assam, India

The present study sequenced and analyzed around 500 bases of the mitochondrial DNA (mtDNA) hypervariable region-I from 59 fecal samples of wild langur collected from nine forest fragments to estimate the genetic diversity in the Indian population of golden langur and established that T. geei is monophyletic but revealed possible hybridization with capped langur, T. pileatus, in the wild.

Sighting of Arunachal Macaque Macaca munzala Sinha et al., 2005 (Mammalia: Primates: Cercopithecidae) in Sakteng Wildlife Sanctuary, Bhutan

The endangered Arunachal Macaque Macaca munzala Sinha et al. 2005, described from the Indian state of Arunachal Pradesh, is amongst several discoveries from the region during second millennia. 

The enigmatic Arunachal macaque: its biogeography, biology and taxonomy in Northeastern India

Evidence is found that darker pelage, larger body size, and shorter tails occur at higher elevations and latitudes similar to the general trend in the sinica‐group's adaptations to colder climates, throwing light on the speciation process and how the northern species of Tibetan macaques evolved from an ancestor similar toThe Assamese macaques as adaptations to a colder climate.

Is Malaysia’s “mystery monkey” a hybrid between Nasalis larvatus and Trachypithecus cristatus? An assessment of photographs

Interspecific hybridization in primates is common but hybridization between distantly related sympatric primate species is rarely observed in the wild. We present evidence for a possible



Macaca munzala: A New Species from Western Arunachal Pradesh, Northeastern India*

The discovery of a macaque that is new to science from the high altitudes of western Arunachal Pradesh, a biodiversity-rich state in northeastern India is reported.

Golden langur – distribution confusion

I refer to the item published in Oryx (25,124). The golden langur Presbytis geei is found in Bhutan and India's Assam state only. So the Indo-Bhutan or Assam-Bhutan boundary implies the same area.

Golden Langur Trachypithecus geei threatened by habitat fragmentation

699 Manuscript received 14 July 2001; Revised manuscript received 11 October 2001; Accepted for publication 29 November 2001 Abstract The Golden Langur Trachypithecus geei is a rare colobine monkey

Distribution of Assamese macaques (Macaca assamensis) in the Inner Himalayan region of Bhutan and their mtDNA diversity

It is tentatively concluded that the macaques of the Inner Himalayan regions in Bhutan are Assamese macaques and that they appear to be of a lineage distinct from Assamensis in the Indo-Chinese region, thereby supporting the speciation hypothesis of the expansion of a sinica-group of macaques from South Asia to Southeast and then to East Asia.

Priority ratings for conservation of Indian primates

Many of India's primates are threatened, especially by forest destruction, and in some areas they are also hunted for food. The 15 species involved are not threatened equally—some are widespread and

The Book of Indian Animals

Mammals in general Apes, monkeys, lemurs The cats Civets Mongooses Hyenas The dog family Bears Pandas The weasel family Insectivores Bats Rodents Hares, mouse-hares The elephant Horses, Rhinoceroses

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This chapter discusses the distribution and habits of marsupials in the Northern Hemisphere, and some examples are given of animals from South America, Asia, and Australia.

International Commission on Zoological Nomenclature (ICZN), c/o The Natural History Museum

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A Field Guide to the Mammals of Bhutan. Department of Forestry, Ministry of Agriculture, Royal Government of Bhutan

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