Adenomus dasi 


Taxonomy [top]

Kingdom Phylum Class Order Family
Animalia Chordata Amphibia Anura Bufonidae

Scientific Name: Adenomus dasi
Species Authority: Manamendra-Arachchi and Pethiyagoda, 1998

Assessment Information [top]

Red List Category & Criteria: Critically Endangered B1ab(iii)+2ab(iii) ver 3.1
Year Published: 2004
Date Assessed: 2004-04-30
Needs updating
Assessor(s): Kelum Manamendra-Arachchi, Anslem de Silva
Reviewer(s): Global Amphibian Assessment Coordinating Team (Simon Stuart, Janice Chanson and Neil Cox)
Listed as Critically Endangered because its Extent of Occurrence is less than 100 km2 and its Area Of Occupancy is less than 10km2, all individuals are in a single location, and there is a presumed continuing decline in the extent and quality of its habitat from aquatic pollution.

Geographic Range [top]

Range Description: This species is restricted to a single locality "Moray Estate, Rajamally, near Mousakelle, alt. 1,370m asl" in the Peak Wilderness Sanctuary of the Adam's Peak area in Sri Lanka. It had previously been collected in the late 1890s at the town Nuwara Eliya (1,710m asl), but is now considered to be extinct at this location (K. Manamendra-Arachchi pers. comm.).
Countries occurrence:
Sri Lanka
Range Map: Click here to open the map viewer and explore range.

Population [top]

Population: This is a rare species, now known only from the Moray Estate. There is no information on its current population status.
Current Population Trend: Decreasing
Additional data:
Population severely fragmented: No

Habitat and Ecology [top]

Habitat and Ecology: It is associated with hill streams in tropical moist forest. Adults can be found on mossy wet rocks within streams, and in riparian leaf-litter. Breeding and larval development take place in streams.
Systems: Terrestrial; Freshwater

Threats [top]

Major Threat(s): The extremely restricted distribution of this species makes it very susceptible to water pollution from adjacent tea plantations and the possible negative impacts of tourism within the area.

Conservation Actions [top]

Conservation Actions: The species is present in the 224-km² Peak Wilderness Sanctuary. Additional survey work is needed to determine the population status of the species.

Classifications [top]

1. Forest -> 1.9. Forest - Subtropical/Tropical Moist Montane
suitability: Suitable  
5. Wetlands (inland) -> 5.1. Wetlands (inland) - Permanent Rivers/Streams/Creeks (includes waterfalls)
suitability: Suitable  
2. Land/water management -> 2.1. Site/area management

In-Place Research, Monitoring and Planning
In-Place Land/Water Protection and Management
  Occur in at least one PA:Yes
In-Place Species Management
In-Place Education
6. Human intrusions & disturbance -> 6.1. Recreational activities
♦ timing: Ongoing    
→ Stresses
  • 2. Species Stresses -> 2.2. Species disturbance

9. Pollution -> 9.1. Domestic & urban waste water -> 9.1.3. Type Unknown/Unrecorded
♦ timing: Ongoing    
→ Stresses
  • 1. Ecosystem stresses -> 1.2. Ecosystem degradation

9. Pollution -> 9.3. Agricultural & forestry effluents -> 9.3.4. Type Unknown/Unrecorded
♦ timing: Ongoing    
→ Stresses
  • 1. Ecosystem stresses -> 1.2. Ecosystem degradation

1. Research -> 1.3. Life history & ecology
3. Monitoring -> 3.1. Population trends

Bibliography [top]

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

Manamendra-Arachchi, K. and Pethiyagoda, R. 1998. A synopsis of the Sri Lankan Bufonidae (Amphibia: Anura), with description of two new species. Journal of South Asian Natural History: 213-246.

Citation: Kelum Manamendra-Arachchi, Anslem de Silva. 2004. Adenomus dasi. The IUCN Red List of Threatened Species 2004: e.T54457A11134953. . Downloaded on 29 November 2015.
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