Kalpana Kalpana (Editor)

Eastern black crested gibbon

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Kingdom
  
Order
  
Genus
  
Higher classification
  
Nomascus

Phylum
  
Chordata

Family
  
Hylobatidae

Scientific name
  
Nomascus nasutus

Rank
  
Species

Eastern black crested gibbon cdn2arkiveorgmediaAEAE966A2FFD4F488DA33D5

Similar
  
Nomascus, Gibbon, Primate, Black Crested Gibbon, Hainan black crested gi

The eastern black crested gibbon (Nomascus nasutus), also known as the Cao-vit black crested gibbon or the Cao-vit crested gibbon, is a species of gibbon from southeast China and north Vietnam.

From the 1960s until the 2000s there had been no confirmed sightings of the eastern black crested gibbon and it was thought to be possibly extinct. In 2002 a small population was rediscovered in the Trùng Khánh District, Cao Bằng Province, in northeast Vietnam. In 2005 it was estimated that this population included about 35-37 individuals, and about 10 remain just across border in Jingxi County, Guangxi, China. It was thought to be extinct in China before the species was re-discovered by members of Kadoorie Conservation China.

The eastern black crested gibbon is one of the rarest and most critically endangered primates in the world. This status has resulted from deforestation of its habitat, encroachment, and poaching. It is considered to be one of "The World's 25 Most Endangered Primates."

Taxonomy

The eastern black crested gibbon is classified as separate from other crested gibbons based on molecular data, fur coloration, and differences in vocal communication. Previously it had been considered conspecific with the Hainan black crested gibbon or as a subspecies of the black crested gibbon. Until the sequencing of the mitochondrial cytochrome b gene the Hainan black crested gibbon was thought to be Nomascus nasutus hainanus, a subspecies of eastern black crested gibbon. The researchers proposed that the genetic separation showed it was a distinct species.

References

Eastern black crested gibbon Wikipedia


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