Madras Hedgehog Genome Study Reveals Evolutionary Insights

The first comprehensive analysis of the complete mitochondrial genome of the Madras hedgehog has provided fresh insights into the evolutionary lineage of this little-known species. The findings help bridge knowledge gaps about its genetic makeup and evolutionary adaptations, highlighting its ecological importance and unique survival strategies in India’s dry landscapes.

About Madras Hedgehog

The Madras hedgehog, scientifically known as Paraechinus nudiventris, is a small mammal native to peninsular India. Locally called “Mulleli”, it is also referred to as the bare-bellied hedgehog. First described in 1851, the species inhabits dry scrublands, thorn forests, grasslands, and agricultural edges. Its distribution is largely confined to Tamil Nadu, Kerala, Andhra Pradesh, and parts of Karnataka, making it an endemic species with limited geographical spread.

Distinct Physical and Behavioural Features

This hedgehog possesses sharp protective spines on its back and soft white fur on its underside. The spines act as a defence mechanism against predators such as foxes, jackals, and mongooses. It is nocturnal in nature and curls into a tight ball when threatened. Adapted to arid conditions, the species demonstrates remarkable resilience in harsh and dry habitats. Its average lifespan ranges between five to six years.

Diet and Ecological Role

The Madras hedgehog is primarily insectivorous, feeding on beetles, ants, termites, and earthworms, along with some plant matter. It plays a vital ecological role by controlling insect populations and contributing to soil aeration. This makes it an important component of dry ecosystem balance, supporting biodiversity and agricultural health.

Important Facts for Exams

• Madras hedgehog is endemic to peninsular India.
• Scientific name: Paraechinus nudiventris.
• IUCN conservation status is listed as Least Concern.
• Known for nocturnal behaviour and defensive spine mechanism.

Threats and Conservation Status

Despite being classified as Least Concern by the IUCN, the species faces localised threats. Hunting driven by traditional beliefs regarding the medicinal value of its quills and meat has led to population declines in certain areas. Habitat degradation due to agricultural expansion further adds to its vulnerability. Continued research, such as mitochondrial genome studies, is essential to guide conservation strategies and ensure long-term survival.