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Hoolock Gibbon

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Hoolock Gibbon

A stranded family of Hoolock Gibbons has been rescued from an agricultural field in the Lower Dibang Valley district. Due to a lack of a continuous canopy, the arboreal apes were being forced to descend to the ground.

About Hoolock Gibbon:

  • Also known as Lesser apes, Hoolock Gibbon is India’s only ape species.
  • They are the smallest and fastest of all ape species.
  • They are one of the 20 gibbon species found worldwide.
  • In India, two species are found:
    • Eastern Hoolock Gibbon (Hoolock leuconedys)
    • Western Hoolock Gibbon (Hoolock hoolock)
  • Habitat:
    • Western Hoolock Gibbon – tropical evergreen rainforests, tropical evergreen, and semi-evergreen forests.
    • Eastern Hoolock Gibbon – Evergreen, scrub & semi-deciduous forests, mountainous broadleaf & pine forests.
  • Their distribution: India, Myanmar, Bangladesh and Southern China.
  • In India – Arunachal Pradesh, Assam, Meghalaya, Nagaland, Manipur.

Conservation status:

Practice biodiversity-related GS answers using Mains exam questions and model answers for strong UPSC mains performance.

  • IUCN Red List Status:
    • Western Hoolock Gibbon – Endangered
    • Eastern Hoolock Gibbon – Vulnerable
  • Wildlife (Protection) Act, 1972Schedule I
  • Both are in CITES Appendix II

Threats to Hoolock Gibbon:

  • Habitat fragmentation due to deforestation
  • Population decline
  • Conservation challenge

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Prelims MCQ:

Which of the following statements about the Hoolock Gibbon are correct?

  1. The Hoolock Gibbon is India’s only ape species.
  2. The Western Hoolock Gibbon is found in tropical evergreen rainforests and semi-evergreen forests.
  3. The Eastern Hoolock Gibbon is listed as Endangered on the IUCN Red List.
  4. The Hoolock Gibbon is found in India, Myanmar, Bangladesh, and Southern China.

Select the correct answer using the code below:

A) 1, 2, and 4 only
B) 1, 2, and 3 only
C) 1, 2, and 4 only
D) 1, 3, and 4 only

Answer:
A) 1, 2, and 4 only

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