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Melanistic tigers UPSC NOTE

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  Why in News? A tigress from Tadoba-Andhari Tiger Reserve was moved to Similipal Tiger Reserve to help diversify the local tiger gene poo...

 Why in News?

  • A tigress from Tadoba-Andhari Tiger Reserve was moved to Similipal Tiger Reserve to help diversify the local tiger gene pool and combat inbreeding.

  • Similipal has seen an increase in pseudo-melanistic (black) tigers, raising concerns about genetic diversity.

What are Pseudo-Melanistic Tigers?

  • Pseudo-melanistic tigers have a dark coat with white and orange stripes visible, resembling an inverted pattern compared to normal tigers.

  • Once considered mythical, their existence was confirmed through various sightings and evidence over the centuries, with the first modern evidence in the 1970s.

How do the Tigers Get Their Colours?

  • Their unique coloration is due to a mutation in the Taqpep gene, causing their stripes to widen and sometimes appear almost entirely black.

  • This genetic mutation is mostly found in the Similipal population, with very few instances in other wild or captive tiger populations.


Why are the Mutations More Common in Similipal?

  • The Similipal Tiger Reserve has a high concentration of tigers (27 out of 30 in Odisha), leading to higher inbreeding rates.

  • The isolation and small founding population increase the likelihood of the mutated gene being passed down, resulting in a high frequency of pseudo-melanistic tigers.

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Learnerz IAS | Concept oriented UPSC Classes in Malayalam: Melanistic tigers UPSC NOTE
Melanistic tigers UPSC NOTE
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