Bamboo rat

Bamboo rat

The bamboo rats are four species of rodents of the subfamily Rhizomyinae. They are the sole living representatives of the tribe Rhizomyini. All are found in the eastern half of Asia.

The species are:

Bamboo rats vary in size, from the Lesser Bamboo Rat which is typically 15 to 25 cm long (head and body: tail length is 6–8 cm), and weighs from 500 to 750 g, to the Sumatra Bamboo Rat, which can reach lengths of nearly 50 cm with a 20 cm tail, and weighs up to 4 kg. However they are all bulky, slow-moving rodents that live and forage in extensive burrow systems and rarely spend much time above ground. They feed on the underground parts of plants. They live at altitudes of 1200 to 4000 m and, except for the Lesser Bamboo Rat, feed principally on bamboo and live in dense bamboo thickets. The Lesser Bamboo Rat is more variable in its habitat, living in grassy areas, forests, and sometimes gardens, and eats a wider variety of vegetation.

All the bamboo rats are regarded as agricultural pests, since they eat the roots of a range of crop plants such as tapioca, sugar cane, and tea bushes, but they are also recognised as valuable food animals. The Chinese Bamboo Rat are sold in food markets in China.

The bamboo rats are the natural hosts for the disease-causing mold, Penicillium marneffei, which is endemic in all species in South-east Asia. In this area, Penicilliosis due to the mold is the third most common opportunistic infection in HIV-positive individuals.

What may have been a Sumatran Bamboo Rat makes a one-line appearance (as the Giant Rat of Sumatra) in the Sherlock Holmes story, The Adventure of the Sussex Vampire.

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