Revalidation of the Himalayan Pangolin as a Distinct Species

Revalidation of the Himalayan Pangolin as a Distinct Species

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Why in News

  • International researchers have officially revalidated the Himalayan pangolin (Manis aurita) as a distinct species rather than a subspecies of the Chinese pangolin (Manis pentadactyla).

About the Himalayan Pangolin

  • The Himalayan pangolin is a unique scaly mammal that belongs to the Manidae family.
  • It is a night-active insect-eater that relies heavily on smell to keep forest insect populations balanced.

Habitat and Distribution

  • This species lives exclusively in the southern Himalayan foothills across Nepal, South Tibet, and Assam in Northeast India.
  • Natural barriers such as the Brahmaputra River basin and the Arakan Mountains separated this species from other Asian pangolins for millions of years.

Physical Attributes

  • Overlapping keratin scales form armor over its body when the animal rolls into a tight ball for protection against predators.
  • It features a large body and skull structure with an average total length of 95.2 cm.
  • Despite its large size, it has noticeably small and reduced outer ear rims.
  • It possesses a shorter and broader nasal bone structure compared to its lowland relatives.

Behavioral and Reproductive Traits

  • This solitary animal stays hidden inside deep underground burrows during the day and comes out only at night to forage.
  • Because it has poor eyesight, it uses its enlarged olfactory bulb and acute sense of smell to locate underground ants and termites.
  • Its long curved front claws allow it to rip open hard soil mounds and dig deep nesting tunnels effortlessly.
  • Female pangolins reproduce slowly and usually give birth to only one pup after a long pregnancy.
  • Newborn pups have soft scales and ride on their mother's tail until their protective armor hardens completely.

Key Differences: Himalayan vs. Chinese Pangolin

  • The Himalayan pangolin features smaller reduced ear rims, whereas the Chinese pangolin has noticeably larger external ears.
  • The Himalayan pangolin has a shorter and broader nasal structure, while the Chinese pangolin has a longer and narrower nasal bone layout.
  • The Himalayan species diverged within cold and arid Himalayan refuges, whereas the Chinese species evolved in stable southern forests.
  • The Himalayan pangolin shows acute inbreeding spikes in localized pockets, while the Chinese pangolin experiences widespread baseline inbreeding.