Hoolock gibbon species extinct from India

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Hoolock gibbon species extinct from India

Hoolock gibbon species extinct from India

  • According to recent information, Hoolock gibbon apes have become a very rare animal in India. It is the second largest gibbon after Siamang.
  • India was initially believed to be home to two species of Gibbon, namely the Eastern Hoolock Gibbon and the Western Hoolock Gibbon.
  • While a recent study by the Center for Cellular and Molecular Biology found that only western hoolock gibbons are found in India.

Main points of study

  • Hoolock gibbon Gibbon’s deviation from a common ancestor occurred 38 million years ago. The Western Hoolock Gibbon and the Eastern Hoolock Gibbon were partitioned 1.49 million years ago.


Earlier misconceptions on Hoolock Gibbon

  • HoolockGibbon was first described by an American naturalist, R Harlan in 1834. The Eastern Hoolock Gibbon and the Western Hoolock Gibbon were considered subspecies until In 2006, the first distribution of Eastern Hoolock Gibbon was published.
  • Western Hoolock Gibbons are found throughout northeastern India, Myanmar and Bangladesh. The Eastern Hoolock Gibbon is found between the Lohit and Dibang rivers in Arunachal Pradesh.


  • According to the International Union for Conservation of Nature(IUCN), the presence of Eastern Hoolock Gibbon in India is uncertain.
  • There are three species of hoolock gibbons. The Western Hoolock Gibbon, the Skywalker Gibbon and the Eastern Hoolock Gibbon are:

The IUCN has placed various species of Hoolock gibbons in the following categories:

  • Western Hoolock Gibbon: Endangered or EN
  • East Hoolock Gibbon: Vulnerable or VU
  • Skywalker Gibbon: Endangered or EN

Source: Indian Express

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