Taxonomy [top]

Kingdom Phylum Class Order Family
Animalia Mollusca Gastropoda Stylommatophora Streptaxidae

Scientific Name: Careoradula perelegans
Species Authority: (Martens, 1898)

Assessment Information [top]

Red List Category & Criteria: Endangered B1ab(iii)+2ab(iii) ver 3.1
Year Published: 2009
Date Assessed: 2006-01-11
Assessor(s): Gerlach, J.
Reviewer(s): Miller, R.M., Pollock, C.M. & Seddon, M.B.
This species is not tolerant of habitat degradation, and is restricted to the least-invaded areas within its habitat. It has a restricted distribution, with an EOO of 300 km², an AOO of 19 km², and is found in only 4 locations. Invasive plant species are currently causing habitat deterioration throughout its range.

Geographic Range [top]

Range Description: Endemic to the Seychelles, this snail is found on Mahé and Silhouette islands. Its extent of occurrence (EOO) is estimated to measure 300 km² and its area of occupancy (AOO) is estimated at 19 km². It is known from 4 locations.
Countries occurrence:
Seychelles (Seychelles (main island group))
Estimated area of occupancy (AOO) - km2: 19
Continuing decline in area of occupancy (AOO): No
Extreme fluctuations in area of occupancy (AOO): No
Estimated extent of occurrence (EOO) - km2: 300
Continuing decline in extent of occurrence (EOO): No
Extreme fluctuations in extent of occurrence (EOO): No
Number of Locations: 4
Continuing decline in number of locations: No
Extreme fluctuations in the number of locations: No
Lower elevation limit (metres): 500
Upper elevation limit (metres): 900
Range Map: Click here to open the map viewer and explore range.

Population [top]

Population: The population was estimted at 29,000 individuals in 2005.
Current Population Trend: Stable
Additional data:
Number of mature individuals: 29000 Continuing decline of mature individuals: No
Extreme fluctuations: No Population severely fragmented: No
Continuing decline in subpopulations: No
Extreme fluctuations in subpopulations: No All individuals in one subpopulation: No

Habitat and Ecology [top]

Habitat and Ecology: Restricted to high forest, this snail is a specialized carrion feeder.
Systems: Terrestrial
Continuing decline in area, extent and/or quality of habitat: Yes

Threats [top]

Major Threat(s): This snail species is vulnerable to habitat deterioration, which was caused in the past by small-scale wood plantations and farming, and is currently taking place due to invasive species (e.g., Cinnamomum verum) that directly alter the habitat.

Conservation Actions [top]

Conservation Actions: This snail species is present in Morne Seychellois National Park. The substantial popualtion on Silhouette island should be protected.

Citation: Gerlach, J. 2009. Careoradula perelegans. The IUCN Red List of Threatened Species 2009: e.T168139A6458448. . Downloaded on 07 October 2015.
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