Beddome’s Cat Skink (Ristella beddomii) Recorded at Aralam and Kottiyoor Wildlife Sanctuaries

Description

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A recent biodiversity survey has documented the presence of Beddome’s cat skink (Ristella beddomii) for the first time in the Aralam and Kottiyoor Wildlife Sanctuaries, marking an important discovery for herpetology in the Western Ghats. This rare lizard, endemic to the region, adds to the growing list of unique species inhabiting these protected areas.

About Beddome’s Cat Skink

• Scientific Name: Ristella beddomii

• Other Names: Beddome’s ristella

• Etymology: The species is named after Richard Henry Beddome, a British naturalist who extensively studied the flora and fauna of India.

• Conservation Status: Considered rare and endemic to the Western Ghats, making its discovery in Kerala’s sanctuaries noteworthy.

Physical Description

• Size and Appearance: A small, reddish-brown lizard with smooth, shiny scales and distinctive bicarinate (ridged) scales.

• Claws: Features retractile claws that assist in climbing and navigating leaf litter.

• Camouflage: Its coloration allows it to blend seamlessly into forest floors and leaf litter, helping it avoid predators.

Habitat And Distribution

• Geographic Range: Endemic to the Western Ghats, one of the world’s biodiversity hotspots.

• Altitude Range: Found at elevations of 400–1,300 metres, typically in dense forest habitats with ample ground cover and leaf litter.

• Microhabitat: Prefers moist, shaded environments in tropical forests and is often found burrowing under decaying logs, stones, or leaf litter.

Reproduction And Lifecycle

• Reproduction: An oviparous species, laying eggs during the southwestern monsoon season when conditions are optimal for hatchling survival.

• Egg-laying: Typically occurs in moist soil or sheltered ground locations to maintain humidity and temperature for embryo development.

Key Facts About Skinks

• Family: Skinks belong to the Scincidae family, a group of reptiles that have existed since the time of dinosaurs.

• Physical Traits: Most skinks are smooth, shiny, and streamlined, with small or reduced limbs adapted for burrowing and ground dwelling.

• Behavior: Highly alert, agile, and fast-moving, skinks forage actively for insects and small invertebrates.

• Habitat Flexibility: Skinks inhabit diverse ecosystems ranging from deserts to tropical rainforests and are known for their exceptional camouflage abilities.

• Global Distribution: While present worldwide, skinks are especially diverse in Southeast Asia, Australia, and North America, reflecting their adaptability to various climates and terrains.

Ecological Significance

The discovery of Ristella beddomii in Aralam and Kottiyoor Wildlife Sanctuaries highlights the ecological richness of the Western Ghats and the importance of continued biodiversity monitoring. Skinks play a crucial role in forest ecosystems by controlling insect populations and serving as prey for larger predators, maintaining ecological balance.

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