Indian Star Tortoise
The Indian star tortoise is of medium size for a tortoise and is found in the arid and dry forests in India and Sri Lanka. Its name comes from the star-like patterns that feature on its high-domed shell. Because of these very distinctive patterns and its highly rounded shell, the Indian star tortoise is popular in the world's trade in exotic pets. The attractive markings on its shell, aside from looking very pretty, serve to help this tortoise more easily blend in with its surroundings, by breaking up the hard edge of the shell, so when the tortoise is grazing, it is not so obvious to predators passing by.
This species lives in three separate parts of the Indian subcontinent: western India and the extreme southeast of Pakistan (e.g., Gujarat, Uttar Pradesh and Rajasthan in India, as well as the Thar Desert in Pakistan), in southeastern India (Kerala, Karnataka, and Tamil Nadu), and on Sri Lanka. They occupy a wide variety of habitats, including semi-arid lowland forests, moist deciduous forest, thorn scrub forests, semi-desert and arid grasslands. This species has a high tolerance for habitats that are seasonally wet or dry, many populations inhabiting areas with a monsoon or rainy season followed by a long hot and dry period. Sometimes they live in agricultural areas.
Habits and lifestyle
Indian star tortoises are generally crepuscular, which means they are active in the early morning and the late afternoon during dry, hot weather. The rest of the time, they shelter under vegetation or some other cover. In the rainy season, they are much more active, moving around and feeding for much of the day. They become inactive in western India and Pakistan during the colder months of winter. These solitary animals do not hibernate, but when it is very dry and hot, or very cold, they stay inactive. Perception and communication appears to be mostly visual, though tactile and olfactory senses are also used during feeding, courtship, male competitive behavior, and nesting, and a male tortoise will vocalize to a female during mating.
bale, nest, turn, dole, creep
Diet and nutrition
These tortoises are polygynandrous (promiscuous), with multiple males and females all have mating relationships. Males compete for females by ramming rival males or flipping them onto their backs. In comparison to many other tortoise species, courtship is rather more subdued, often with minimal or no butting, shoving, or biting of females - which in this species are often are much larger than males. Breeding starts when the rainy season arrives. (In south India this is mid-June to November.) About 60 - 90 days after mating, typically in the evening, females start to wander around and sniff the ground. When an acceptable nest site is found, a female will begin to dig a flask-shaped nest, using her hind feet. After laying her eggs, she fills in the nest, and, with her plastron, flattens down the soil. Each year females lay 1-9 clutches, with 1-10 eggs in each. Incubation is for 47 - 180 days. Once the eggs are laid, there is no care given to eggs or hatchlings. Females in the wild may reach maturity in 8 - 12 years while male are mature within 6 - 8 years, but the time may be much shorter for captive tortoises.
in south India: mid-June - November
Natural threats to this species are predation and flooding, but humans have drastically reduced their numbers through loss of habitat and collection for food and for the exotic pet trade. In much of India, Indian star tortoises are important as a food source. They are also an ingredient in traditional Chinese medicine, and they are susceptible to disease, particularly pneumonia, respiratory diseases, and overgrowth of parasites when stressed by handling, collection and shipment, often under inhumane conditions. Many specimens caught to be sold as pets will die from unsuspected disease.
The IUCN Red List and other sources do not provide the Indian star tortoise total population size. Currently this species is classified as Vulnerable (VU) and its numbers today are decreasing.
Being herbivores in their habitats when abundant Indian star tortoises may act as dispersal agents for various plants via consumption of seeds and fruit.
Fun facts for kids
- The Indian star tortoise’s shell enables it to pull its vulnerable head and legs into the shell for protection.
- The radiating lines on the Indian star tortoise’s carapace break up the shell shape when it hides amongst tufts of grass.
- These tortoises like water more than other species of the same genus, but they are sensitive to extended periods of high humidity.
- If food becomes scarce, as it tends to in the seasonally hot, dry periods, these animals will become inactive and not eat for a long time.
- Mathematicians think that the shape of the Indian star tortoise shell enables them to easily flip back the right way if they are accidentally tipped upside down.
- Male Indian star tortoises have a long tail, and females have a short stubby tail.