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Discula cheiranthicola 

Scope: Global & Europe
Language: English
Status_ne_offStatus_dd_offStatus_lc_offStatus_nt_onStatus_vu_offStatus_en_offStatus_cr_offStatus_ew_offStatus_ex_off

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Taxonomy [top]

Kingdom Phylum Class Order Family
Animalia Mollusca Gastropoda Stylommatophora Hygromiidae

Scientific Name: Discula cheiranthicola (R.T. Lowe, 1852)

Assessment Information [top]

Red List Category & Criteria: Near Threatened (Regional assessment) ver 3.1
Year Published: 2011
Date Assessed: 2010-08-31
Assessor(s): Seddon, M.B.
Reviewer(s): Cameron, R., Groh, K., Cuttelod, A. & Neubert, E.
Justification:
The species is restricted to a single island, with an area of occupancy of less than 12 km². It is known at 6-10 locations (14 sites) and most of the recent records are from slopes, hill-tops and ridges within small region at east end of Porto Santo suggesting that the species could be vulnerable to changes in land-use or extensive fire damage. The presence of some locations separated from the main cluster of locations has given the revised listing of Near Threatened. The rate of habitat decline is considered to be slow, so if this accelerates, then the species would qualify for Vulnerable (VU) B2ab(iii).

Geographic Range [top]

Range Description:This species is endemic to Porto Santo (Madeiran islands), and is also known as fossil on Ilheu de Baixo. It is present at 14 sites within a restricted area of occupancy of less than 12 km².
Countries occurrence:
Native:
Portugal (Madeira)
Additional data:
Estimated area of occupancy (AOO) - km2:12
Number of Locations:10
Range Map:Click here to open the map viewer and explore range.

Population [top]

Population:There are no data on recent population trends.
Current Population Trend:Unknown
Additional data:

Habitat and Ecology [top]

Habitat and Ecology:This species is found in rock crevices, amongst stems of shrubby plants and under stones.
Systems:Terrestrial

Use and Trade [top]

Use and Trade: The species is not known to be utilised, although occasionally sold by shell collectors.

Threats [top]

Major Threat(s): The major threats are from grassland fires disturbing the habitat and killing off the adults within these populations.

Conservation Actions [top]

Conservation Actions: The species range lies partly in a protected area on Porto Santo; further research required on population trends and impact of introduced rodents.

Citation: Seddon, M.B. 2011. Discula cheiranthicola. The IUCN Red List of Threatened Species 2011: e.T6726A12801062. . Downloaded on 15 October 2018.
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