Murina ryukyuana 

Scope: Global
Language: English

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Taxonomy [top]

Kingdom Phylum Class Order Family
Animalia Chordata Mammalia Chiroptera Vespertilionidae

Scientific Name: Murina ryukyuana Maeda & Matsumura, 1998
Common Name(s):
English Ryukyu Tube-nosed Bat

Assessment Information [top]

Red List Category & Criteria: Endangered B1ab(i,ii,iii) ver 3.1
Year Published: 2008
Date Assessed: 2008-06-30
Assessor(s): Maeda, K.
Reviewer(s): Hutson, A.M., Racey, P.A. (Chiroptera Red List Authority) & Chanson, J. (Global Mammal Assessment Team)
Listed as Endangered because this forest-dependent species occurs only on three small islands, all of which have experienced past and present deforestation.
Previously published Red List assessments:

Geographic Range [top]

Range Description:This species is endemic to Japan, and is found only on the islands of Okinawa, Tokuno-shima, and Amami-Oshima (Abe, et al., 2005). This species was first discovered in 1996.
Countries occurrence:
Additional data:
Number of Locations:3
Range Map:Click here to open the map viewer and explore range.

Population [top]

Population:There have been ten records from the northern part of Okinawa. Twenty surveys have been conducted since 1992 on Okinawa and Tokuno-shima. There was one survey in 2000 on Amami-oshima on three nights, and three individuals were found. Previously, there were not many surveys for this species. It appears that this species occurs at a low density when compared with congeneric species.
Current Population Trend:Decreasing
Additional data:
Population severely fragmented:Yes

Habitat and Ecology [top]

Habitat and Ecology:The species is dependent on mature forest. They roost in tree hollows.

Threats [top]

Major Threat(s): There is deforestation on all three islands which is affecting the species, as it is dependent on mature, intact forests.

Conservation Actions [top]

Conservation Actions: Some parts of Amami-oshima are protected in forest reserves (through the federal forest department and the prefecture). It is listed as Endangered (EN) in the Japanese Red List (2007).

Citation: Maeda, K. 2008. Murina ryukyuana. The IUCN Red List of Threatened Species 2008: e.T29485A9501113. . Downloaded on 20 September 2018.
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