Crocidura orii 

Scope: Global
Language: English

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Taxonomy [top]

Kingdom Phylum Class Order Family
Animalia Chordata Mammalia Eulipotyphla Soricidae

Scientific Name: Crocidura orii Kuroda, 1924
Common Name(s):
English Ryukyu Shrew, Amami Shrew, Orii's Shrew

Assessment Information [top]

Red List Category & Criteria: Endangered B1ab(iii,v) ver 3.1
Year Published: 2016
Date Assessed: 2015-12-14
Assessor(s): Laginha Pinto Correia, D.
Reviewer(s): Amori, G.
Contributor(s): Abe, H. & Motokawa, M.
Listed as Endangered it has an extent of occurrence of less than 2,500 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.
Previously published Red List assessments:

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 occurrence:
Japan (Nansei-shoto)
Additional data:
Upper elevation limit (metres):300
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.
Current Population Trend:Decreasing
Additional data:
Continuing decline of mature individuals:Yes
Population severely fragmented:Yes

Habitat and Ecology [top]

Habitat and Ecology:Crocidura orii inhabits broad-leaved natural forest.
Continuing decline in area, extent and/or quality of habitat:Yes

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.

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).

Citation: Laginha Pinto Correia, D. 2016. Crocidura orii. The IUCN Red List of Threatened Species 2016: e.T5590A22302169. . Downloaded on 22 September 2018.
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