Himalayan Ibex a Distinct Species

Context

  • A recent study by scientists of the Zoological Survey of India (ZSI) has proved that Himalayan Ibex is a distinct species from the Siberian Ibex.

About the Study

  • The study was funded through the National Mission on Himalayan Studies.
  • The National Mission on Himalayan Studies is implemented by the Ministry of Environment, Forest and Climate Change.
  • It targets to provide much needed focus, through holistic understanding of system’s components and their linkages, in addressing the key issues relating to conservation and sustainable management of natural resources in Indian Himalayan Region (IHR).
  • The study was based on genetic analysis conducted with the inclusion of the sequences available from all across the distribution ranges of Siberian Ibex.
  • The study revealed that Siberian Ibex was estimated to have diverged from Alpine Ibex during the Pleistocene epoch (2.4 million years ago) rather than during the Miocene-Pliocene boundary (6.6 million years ago).
  • Scientists presume that the ‘montane systems’, formed by a series of climatic oscillations and temporal topographic metamorphosis, have broken up the contiguous distribution of the species and accelerated allopatric speciation.
  • Allopatric speciation means speciation because of geographic and reproductive isolation.
  • The study also reveals that Siberian ibex is a polytypic species, plausibly formed by lumping of at least 2 species and or 3 to 4 sub-species.
  • Polytypic species are species that contain two or more subspecies.

Siberian Ibex (Capra sibirica)

  • Siberian Ibex is a species of wild goat.
  • It is distributed in diverse habitats, ranging from cold deserts, rocky outcrops, steep terrain, high-land flats and mountain ridges to low mountains and foothills.
  • From Mongolia, its distribution extends towards Altai, Hangai, Gobi-Altai, the Hurukh mountain ranges as well as Sayan Mountains near Russia and scattered populations in the small mountains of Trans-Altai Gobi.
  • In Asia, Ibex is distributed in the Montane habitats, ranging in elevations from 500 m to 6,700 m in countries like India, Kazakhstan, Tajikistan, Mongolia, Pakistan, Southern Siberia and China.
  • Its IUCN status is least concerned.

Himalayan Ibex (Capra sibirica hemalayanus)

  • Earlier the Himalayan Ibex was regarded as a subspecies of the Siberian Ibex (Capra sibirica)
  • The Himalyan Ibex is distributed mainly in the trans-Himalayan ranges of the Union Territories of Ladakh and Jammu and Kashmir and Himachal Pradesh.

Source:TH