Overview

Distribution

Range Description

This widespread species is known from southern China, Viet Nam, Lao PDR, Cambodia, Thailand, central and northern Myanmar, northeastern India, Bhutan, and eastern Nepal (Musser and Carleton 2005). In China, it is known from the provinces of Tibet, Guizhou, Hainan (Guangdong), and Hong Kong (Smith and Xie 2008). It could possibly be present in the remnant northern and northeastern forests of Bangladesh (S. Molur pers. comm.). It is not known from mainland peninsular Thailand south of the Isthmus of Kra (10E, 30N), but it occurs on four islands off the coast (Koh Tau, Koh Phangan, Koh Samui, and Koh Kra) (Musser and Carleton 2005). It is also found on the Andaman Islands (islands of North Andaman, Interview, Middle Andaman, Long, Henry Lawrence, Havelock, South Andaman, and Little Andaman) and Car Nicobar (Musser and Carleton 2005). It roughly occurs from sea level (Aplin and Frost 2006) up to around 2,000 m asl (Sarker et al. 2005).
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Physical Description

Type Information

Type for Rattus andamanensis
Catalog Number: USNM 221512
Collection: Smithsonian Institution, National Museum of Natural History, Department of Vertebrate Zoology, Division of Mammals
Sex/Stage: Female; Adult
Preparation: Skin; Skull
Collector(s): C. Kloss
Year Collected: 1916
Locality: Lat Bua Kao [= Sathani Lat Bua Khao], Nakhon Ratchasima, Thailand, Asia
  • Type: Kloss, C. B. 1919 Dec 31. Journal of the Natural History Society of Siam. 3: 379.
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Type for Rattus andamanensis
Catalog Number: USNM 111841
Collection: Smithsonian Institution, National Museum of Natural History, Department of Vertebrate Zoology, Division of Mammals
Sex/Stage: Female; Adult
Preparation: Skin; Skull
Collector(s): W. Abbott
Year Collected: 1901
Locality: Henry Lawrence Island, Andaman Islands, Andaman and Nicobar Is, Asia
  • Type: Miller, G. S. 1902 May 29. Proceedings of the United States National Museum. 24: 762.
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Type for Rattus andamanensis
Catalog Number: USNM 111817
Collection: Smithsonian Institution, National Museum of Natural History, Department of Vertebrate Zoology, Division of Mammals
Sex/Stage: Male; Adult
Preparation: Skin; Skull
Collector(s): W. Abbott
Year Collected: 1901
Locality: Car Nicobar, Nicobar Islands, Andaman and Nicobar Is, Asia
  • Type: Miller, G. S. 1902 May 29. Proceedings of the United States National Museum. 24: 770.
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Ecology

Habitat

Habitat and Ecology

Habitat and Ecology
This is a highly arboreal species that is present in a variety of forest and forest edge habitats. It can occur in secondary and modified habitats with wooded areas. It is often found in agriculture lands, scrubland, and around houses (Smith and Xie 2008).

Systems
  • Terrestrial
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Molecular Biology and Genetics

Molecular Biology

Statistics of barcoding coverage: Rattus sikkimensis

Barcode of Life Data Systems (BOLDS) Stats
Public Records: 0
Specimens with Barcodes: 2
Species With Barcodes: 1
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Statistics of barcoding coverage: Rattus remotus

Barcode of Life Data Systems (BOLDS) Stats
Public Records: 0
Specimens with Barcodes: 21
Species With Barcodes: 1
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Statistics of barcoding coverage: Rattus andamanensis

Barcode of Life Data Systems (BOLDS) Stats
Public Records: 0
Specimens with Barcodes: 3
Species With Barcodes: 1
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Conservation

Conservation Status

IUCN Red List Assessment


Red List Category
LC
Least Concern

Red List Criteria

Version
3.1

Year Assessed
2008

Assessor/s
Aplin, K., Frost, A., Chakraborty, S., Molur, S. & Nameer, P.O.

Reviewer/s
Smith, A.T. & Johnston, C.H. (Global Mammal Assessment Team)

Contributor/s

Justification
This species is listed as Least Concern in view of its wide distribution, presumed large population, occurrence in several protected areas, tolerance of habitat modification, and because it is unlikely to be declining fast enough to qualify for listing in a more threatened category.

History
  • 1996
    Vulnerable
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Population

Population
It can be moderately abundant in forested areas.

Population Trend
Stable
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Threats

Major Threats
There are no major threats to this species.
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Management

Conservation Actions

Conservation Actions
This species is listed in the Schedule V (considered vermin) of the Indian Wildlife (Protection) Act, 1972 (Sarker et al. 2005). In China, it occurs in Fanjingshan (Guizhou) and Jianfengling Nature Reserves (CSIS 2008) and it is presumably present in many other protected areas. Further studies into the taxonomy of this species, particularly a review of genetic material, is needed. In China, it has been regionally Red Listed as Least Concern (Wang and Xie 2004).
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Wikipedia

Sikkim rat

The Sikkim Rat (Rattus andamanensis) is a species of rodent in the family Muridae.

It is found in Bhutan, Cambodia, China, India, Laos, Myanmar, Nepal, Thailand, and Vietnam. The rat's coloring is brownish upperparts and a white underside[1]

References[edit]

  1. ^ "Himalayan field rat" Encyclopædia Britannica Online


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