Taxonomy [top]

Kingdom Phylum Class Order Family
Animalia Chordata Amphibia Anura Ranidae

Scientific Name: Babina subaspera
Species Authority: (Barbour, 1908)
Rana subaspera Barbour, 1908

Assessment Information [top]

Red List Category & Criteria: Endangered B1ab(iii) ver 3.1
Year Published: 2004
Date Assessed: 2004-04-30
Needs updating
Assessor(s): Yoshio Kaneko, Masafumi Matsui
Reviewer(s): Global Amphibian Assessment Coordinating Team (Simon Stuart, Janice Chanson and Neil Cox)
Listed as Endangered, because its Extent of Occurrence is less than 500 km2, its distribution is severely fragmented, and there is a continuing decline in the extent and quality of its habitat.
Previously published Red List assessments:
1996 Vulnerable (VU)
1994 Vulnerable (V)

Geographic Range [top]

Range Description: This species is endemic to the Amamioshima and Kakeromajima Islands of the central Ryukyus in Japan.
Countries occurrence:
Range Map: Click here to open the map viewer and explore range.

Population [top]

Population: There is no information on the population status of this species.
Current Population Trend: Decreasing
Additional data:
Population severely fragmented: No

Habitat and Ecology [top]

Habitat and Ecology: It inhabits primary, or well-recovered secondary, broad-leaved evergreen forest, breeding by larval development in small pools on forest trails and muddy riverbeds.
Systems: Terrestrial; Freshwater

Threats [top]

Major Threat(s): Recent deforestation on Amamioshima, along with road construction in mountainous areas, has been severely impacting the quality of the habitat of the species. Other threats include predation by introduced mongoose and development of rivers.

Conservation Actions [top]

Conservation Actions: It is unclear whether it occurs in any protected areas, though there is clearly a need for improved protection of forest habitats in the Ryukyus.

Classifications [top]

1. Forest -> 1.6. Forest - Subtropical/Tropical Moist Lowland
suitability: Suitable  
5. Wetlands (inland) -> 5.7. Wetlands (inland) - Permanent Freshwater Marshes/Pools (under 8ha)
suitability: Suitable  
5. Wetlands (inland) -> 5.8. Wetlands (inland) - Seasonal/Intermittent Freshwater Marshes/Pools (under 8ha)
suitability: Suitable  
2. Land/water management -> 2.1. Site/area management

In-Place Research, Monitoring and Planning
In-Place Land/Water Protection and Management
In-Place Species Management
In-Place Education
4. Transportation & service corridors -> 4.1. Roads & railroads
♦ timing: Ongoing    
→ Stresses
  • 1. Ecosystem stresses -> 1.2. Ecosystem degradation

5. Biological resource use -> 5.3. Logging & wood harvesting -> 5.3.5. Motivation Unknown/Unrecorded
♦ timing: Ongoing    
→ Stresses
  • 1. Ecosystem stresses -> 1.2. Ecosystem degradation

8. Invasive & other problematic species & genes -> 8.1. Invasive non-native/alien species -> 8.1.2. Named species
♦ timing: Ongoing    
→ Stresses
  • 2. Species Stresses -> 2.1. Species mortality

1. Research -> 1.2. Population size, distribution & trends
1. Research -> 1.3. Life history & ecology
1. Research -> 1.6. Actions
3. Monitoring -> 3.1. Population trends

Bibliography [top]

IUCN. 2004. 2004 IUCN Red List of Threatened Species. Downloaded on 23 November 2004.

Maeda, N. and Matsui, M. 1999. Frogs and Toads of Japan. Revised edition. Bun-ichi Sogo Shuppan Co., Ltd, Tokyo.

Ota, H. and Toda, M. 2000. Otton frog. In: Environment Agency (ed.), Threatened Wildlife of Japan - Red Data Book, 2nd Edition: Reptilia/Amphibia, Japan Wildlife Research Center, Tokyo.

Sengoku, S., Hikida, T., Matsui, M. and Nakaya, K. 1996. The Encyclopedia of Animals in Japan. Volume 5. Amphibians, Reptiles, Chondrichthyes. Heibonsha Limited, Tokyo.

Citation: Yoshio Kaneko, Masafumi Matsui. 2004. Babina subaspera. The IUCN Red List of Threatened Species 2004: e.T19172A8847183. . Downloaded on 13 October 2015.
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