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Coleura seychellensis
– Critically Endangered
Taxonomy
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Kingdom:
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ANIMALIA
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Phylum:
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CHORDATA
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Class:
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MAMMALIA
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Order:
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CHIROPTERA
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Family:
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EMBALLONURIDAE
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Scientific Name:
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Coleura seychellensis
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Species Authority:
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Peters, 1868
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Common Name/s:
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| English | — | SEYCHELLES SHEATH-TAILED BAT |
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Assessment Information
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Red List Category & Criteria:
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CR C2a(i,ii) ver 3.1 (2001)
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Year Assessed:
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2004
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Assessor/s:
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Mickleburgh, S., Hutson, A. & Bergmans, W. (GMA Africa Workshop)
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Evaluator/s:
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Hutson, A., Racey, P. & Mickleburgh, S. (Chiroptera Red List Authority)
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Justification:
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It is uncertain whether the distribution is less than 100 km², but there appears to be less than 50 individuals in the subpopulations and the population is declining in extent of occurence and area of occupancy.
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History:
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| 1988 | - | Endangered (IUCN Conservation Monitoring Centre 1988) |
| 1990 | - | Endangered (IUCN 1990) |
| 1994 | - | Endangered (Groombridge 1994) |
| 1996 | - | Critically Endangered (Baillie and Groombridge 1996) |
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Geographic Range
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Range Description:
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This Seychelles endemic is found on the islands of Silhouette, Mahe and Praslin. It is extinct on La Digue (went extinct post 1980). On Mahe only found in the northwest, more surveys are needed.
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Countries:
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Native:
Seychelles
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Population
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Population:
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The total population is 50 to 100 individuals. Over the last 30 years there has been a reduction on at least Mahe and Praslin, in both area of occupancy and density.
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Population Trend:
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Habitat and Ecology
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Habitat and Ecology:
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Found primarily coastal areas. Roosts in boulder caves.
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System:
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Terrestrial
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List of Habitats:
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| 1.6 | Forest - Subtropical/Tropical Moist Lowland |
| 1.7 | Forest - Subtropical/Tropical Mangrove Vegetation Above High Tide Level |
| 5.7 | Wetlands (inland) - Permanent Freshwater Marshes/Pools (under 8ha) |
| 7.1 | Caves and Subterranean Habitats (non-aquatic) - Caves |
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Threats
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Threats:
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Habitat loss is the main threat but may also be predated on by barn owls.
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List of Threats:
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| 1 | Habitat Loss/Degradation (human induced) (ongoing) |
| 1.4.2 | Habitat Loss/Degradation - Infrastructure development - Human settlement (future) |
| 2.2 | Invasive alien species (directly affecting the species) - Predators (ongoing) |
| 10.1 | Human disturbance - Recreation/tourism (future) |
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Conservation Actions
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Conservation Actions:
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A management plan has been developed, but it may not have been implemented. There are proposals for surveys.
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List of Conservation Actions:
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| 1.1.1 | Policy-based actions - Management plans - Development (in place) |
| 3.2 | Research actions - Population numbers and range (needed) |
| 3.8 | Research actions - Conservation measures (needed) |
| 3.9 | Research actions - Trends/Monitoring (needed) |
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Bibliography
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Bibliography:
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Baillie, J. and Groombridge, B. (compilers and editors) 1996. 1996 IUCN Red List of Threatened Animals. IUCN, Gland, Switzerland. Groombridge, B. (ed.) 1994. 1994 IUCN Red List of Threatened Animals. IUCN, Gland, Switzerland. IUCN Conservation Monitoring Centre. 1988. 1988 IUCN Red List of Threatened Animals. IUCN, Gland, Switzerland and Cambridge, UK. IUCN. 1990. 1990 IUCN Red List of Threatened Animals. IUCN, Gland, Switzerland and Cambridge, UK.
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