Pachnodus ornatus 

Scope: Global
Language: English

Translate page into:

Taxonomy [top]

Kingdom Phylum Class Order Family
Animalia Mollusca Gastropoda Stylommatophora Cerastidae

Scientific Name: Pachnodus ornatus (Dufo, 1840)

Assessment Information [top]

Red List Category & Criteria: Endangered B1ab(iii)+2ab(iii) ver 3.1
Year Published: 2009
Date Assessed: 2006-01-11
Needs updating
Assessor(s): Gerlach, J.
Reviewer(s): Miller, R.M., Pollock, C.M. & Seddon, M.B.
This species has a restricted distribution (EOO = 15 km²; AOO = 12 km²; 4 locations), and invasive exotic plant species are causing habitat deterioration throughout its range. Within this area populations are stable but vulnerable to further habitat deterioration.

Geographic Range [top]

Range Description:This snail is endemic to Mahé island, in the Seychelles. It's extent of occurence (EOO) is estimated to be 15 km² and its area of occupancy (AOO) is 12 km².
Countries occurrence:
Seychelles (Seychelles (main island group))
Additional data:
Estimated area of occupancy (AOO) - km2:12Continuing decline in area of occupancy (AOO):No
Extreme fluctuations in area of occupancy (AOO):NoEstimated extent of occurrence (EOO) - km2:15
Continuing decline in extent of occurrence (EOO):NoExtreme fluctuations in extent of occurrence (EOO):No
Number of Locations:4Continuing decline in number of locations:No
Extreme fluctuations in the number of locations:NoLower elevation limit (metres):250
Upper elevation limit (metres):600
Range Map:Click here to open the map viewer and explore range.

Population [top]

Population:An estimated 101,000 individuals were recorded in 2005.
Current Population Trend:Stable
Additional data:
Number of mature individuals:101000Continuing decline of mature individuals:No
Extreme fluctuations:NoPopulation severely fragmented:No

Habitat and Ecology [top]

Habitat and Ecology:An arboreal species, this snail can be found in high forest and palm forest, from 250-600 m.
Continuing decline in area, extent and/or quality of habitat:Yes
Generation Length (years):2

Threats [top]

Major Threat(s): Currently, the main threat to this snail species is habitat degradation caused by impacts from invasive exotic species (e.g., Cinnamomum verum). Small-scale wood plantations have caused habitat degradation in the past.

Conservation Actions [top]

Conservation Actions: There are currently no conservation measures in place for this species. The La Reserve-Brullee area of Mahé should be protected. Invasive species must be controlled throughout the Seychelles.

Citation: Gerlach, J. 2009. Pachnodus ornatus. The IUCN Red List of Threatened Species 2009: e.T168113A6452090. . Downloaded on 22 January 2018.
Disclaimer: To make use of this information, please check the <Terms of Use>.
Feedback: If you see any errors or have any questions or suggestions on what is shown on this page, please provide us with feedback so that we can correct or extend the information provided