Similipal’s Black Tigers Reach 81%—Experts Warn of Inbreeding Risks

Govind Tekale

Similipal Tiger Reserve in Odisha now houses 10 black tigers out of a total population of 16, with their unique dark appearance becoming a genetic concern for wildlife experts.

Photo Source - Government of Odisha (CC BY 4.0)

These rare cats aren't truly black but display "pseudo-melanism" - a genetic mutation causing their stripes to widen and merge, creating a darker appearance.

Photo Source - Tambako the Jaguar (CC BY-ND 2.0)

Scientists from Bangalore's National Centre for Biological Sciences traced the cause to a mutation in the Transmembrane Aminopeptidase Q gene, which alters stripe patterns.

Photo Source - Advanced genomic (Flickr)

First officially documented in 1993, what locals once described as folklore has grown into a significant population, with 13 black tigers counted in the 2023-24 report.

Photo Source - Khushboo and Rahul Sharma (Flickr)

The high concentration of this rare trait points to inbreeding within Similipal's isolated tiger population, creating what scientists call a "genetic bottleneck."

Photo Source - olga_apostolova (Flickr)

Conservation plans include introducing female tigers from other regions to improve genetic diversity, though experts warn of challenges based on previous relocation attempts.

Photo Source - The Food and Agriculture Organization of United Nation (Flickr)

Odisha government received approval to establish the world's first melanistic tiger safari near Similipal, initially featuring three melanistic tigers from Nandankanan zoo.

Photo Source - Wildnest Travel and Photography (CC BY 2.0)

The 200-hectare safari facility will include 100 hectares for display and the remainder for veterinary care, rescue centers, and visitor amenities

Photo Source - Smithsonian’s National Zoo (CC BY-NC-ND 2.0)

Wildlife experts stress that balancing preservation of these unique tigers while ensuring genetic health presents a complex conservation challenge in fragmented habitats.

Photo Source - B.C Ministry of Transportation and Transit (CC BY-NC-ND 2.0)