Crocidura orii

Taxonomy

Assessment Information

Geographic Range

Population

Habitat and Ecology

Threats

Conservation Actions

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Taxonomy [top]

Kingdom	Phylum	Class	Order	Family
ANIMALIA	CHORDATA	MAMMALIA	EULIPOTYPHLA	SORICIDAE

Scientific Name:

Crocidura orii

Species Authority:

Kuroda, 1924

Common Name/s:

English

–

Amami Shrew, Orii's Shrew, Ryukyu Shrew

Assessment Information [top]

Red List Category & Criteria:

Endangered B1ab(iii,v) ver 3.1

Year Published:

2008

Assessor/s:

Motokawa, M. & Abe, H.

Reviewer/s:

Amori, G. (Small Nonvolant Mammal Red List Authority) & Chanson, J. (Global Mammal Assessment Team)

Contributor/s:

Justification:
Listed as Endangered it has an extent of occurrence of less than 5,000 km², its habitat is severely fragmented, and there is continuing decline in the extent and quality of its forest habitat, as well as the number of individuals due to predation by introduced mongoose.

History:

1996	–	Endangered
1994	–	Rare (Groombridge 1994)

Geographic Range [top]

Range Description:	This species is known only from the islands of Amani-Oshima (712 km²), Tokunoshima (248 km²) and Kakeromajima (77 km²) in the Ryukyu Islands, Japan. On Amani-Oshima, it is known only from the southern parts, although the type locality lies further north. It occurs from sea level up to 300 m asl.
Countries:	Native: Japan (Nansei-shoto)
Range Map:	Click here to open the map viewer and explore range.

Population [top]

Population:	The population of this species is probably very small; only around 10 specimens have been recorded. Only single specimens are known from Kakeromajima and Tokunoshima, the former dating back to the early 2000s and the latter to 1974. There has been no recent survey work on Tokunoshima or Kakeromajima.
Population Trend:	Decreasing

Habitat and Ecology [top]

Habitat and Ecology:	It inhabits broad-leaved natural forest.
Systems:	Terrestrial

Threats [top]

Major Threat(s):	The species' habitat is confined to natural forests on mountain areas where many roads have been constructed and forests have been destroyed in the last 50 years. Less than 30% and 15% of natural forest remains intact on Amami-Oshima and Tokunoshima, respectively. The spread of the introduced mongoose (Herpestes javanicus) remains a major threat to this species in Amami-Oshima (Japan RDB, 2002).

Major Threat(s):

The species' habitat is confined to natural forests on mountain areas where many roads have been constructed and forests have been destroyed in the last 50 years. Less than 30% and 15% of natural forest remains intact on Amami-Oshima and Tokunoshima, respectively. The spread of the introduced mongoose (Herpestes javanicus) remains a major threat to this species in Amami-Oshima (Japan RDB, 2002).

Conservation Actions [top]

Conservation Actions:	At least one record is from a protected area. Control of the introduced mongoose species is necessary. It is listed as Endangered (EN) in the Japanese Red List (2007).

Conservation Actions:

At least one record is from a protected area. Control of the introduced mongoose species is necessary. It is listed as Endangered (EN) in the Japanese Red List (2007).

Citation:	Motokawa, M. & Abe, H. 2008. Crocidura orii. In: IUCN 2012. IUCN Red List of Threatened Species. Version 2012.2. <www.iucnredlist.org>. Downloaded on 22 May 2013.
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