Rattus Tiomanicus
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The Malayan field rat, Malaysian field rat or Malaysian wood rat, (''Rattus tiomanicus'') is a species of rodent in the family
Muridae The Muridae, or murids, are the largest family of rodents and of mammals, containing approximately 1,383 species, including many species of mice, rats, and gerbils found naturally throughout Eurasia, Africa, and Australia. The name Muridae come ...
. It is nocturnal and mainly arboreal and is found in Malaysia, Thailand, Indonesia and the Philippines. It is a common species and the International Union for Conservation of Nature has assessed it as being of " least concern".


Description

The Malayan field rat has a head-and-body length of and a tail . It has a weight of between . The ears are large and nearly naked. The fur is smooth and flattened, interspersed with short spines. The dorsal pelage is a grizzled olive-brown with scattered medium-length black guard hairs, and the underparts are whitish. The tail, which is a similar length to the body, is a uniform dark brown. The feet are broad, and the soles have fine ridges for climbing. It differs from
Annandale's rat Annandale's rat (''Sundamys annandalei'') is a species of rodent in the family Muridae. It is found in Indonesia (Sumatra), Peninsular Malaysia, and Singapore Singapore (), officially the Republic of Singapore, is a sovereign island cou ...
(''Rattus annandalei'') in having sleek fur with spines and fewer mammae, and from the ricefield rat (''Rattus argentiventer'') in having plain white underparts and lacking an orange spot in front of the ear.


Distribution and habitat

The Malayan field rat is known from Malaysia, Thailand, Sumatra, Borneo, the Philippines and many smaller islands. Its typical habitat is primary and secondary forest, including coastal forest but it is seldom found in dipterocarp forests. It is also found in plantations, shrubby areas, grassland and gardens, but seldom invades buildings.


Behaviour

The Malayan field rat is nocturnal. It climbs well and spends much of its time in trees as well as foraging on the ground. It hides in log piles, heaps of palm fronds, under fallen logs and in the crowns of palm trees. It feeds on both vegetable and animal matter, with oil palm fruits forming part of its diet.


Status

The Malayan field rat is an abundant and adaptable species with a very wide range, a large total population and an ability to live in a number of different environments. No particular threats have been identified, and in some areas it is regarded as a
pest Pest or The Pest may refer to: Science and medicine * Pest (organism), an animal or plant deemed to be detrimental to humans or human concerns ** Weed, a plant considered undesirable * Infectious disease, an illness resulting from an infection ** ...
. The International Union for Conservation of Nature has assessed its conservation status as being of " least concern".


References

* {{Taxonbar, from=Q139675 Rattus Rats of Asia Rodents of Indonesia Rodents of Malaysia Rodents of the Philippines Rodents of Thailand Mammals of Brunei Mammals of Borneo Mammals described in 1900 Taxonomy articles created by Polbot