Bulimulus indefatigabilis
| Kingdom |
Phylum |
Class |
Order |
Family |
| ANIMALIA |
MOLLUSCA |
GASTROPODA |
STYLOMMATOPHORA |
ORTHALICIDAE |
| Scientific Name: |
Bulimulus indefatigabilis |
| Species Authority: |
(Dall, 1900) |
| Taxonomic Notes: |
Synonym = Naesiotus indefatigabilis. |
Assessment Information
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| Red List Category & Criteria: |
Critically Endangered
B2ab(iii)c(ii,iii,iv)
ver 3.1
|
| Year Published: |
2003 |
| Assessor/s: |
Parent, C. |
| Reviewer/s: |
Coppois, G. & Seddon, M.B. (Mollusc Red List Authority) |
Justification:
Bulimulus indefatigabilis is endemic to Santiago Island in the Galápagos Islands. It has a very restricted range, probably less than 3 km². Shells of this species are found on a much greater range suggesting that, in the past, this species inhabited a larger range on the island. The major threat on Santiago Island is introduced species: there is a direct threat to the species from little fire ants (Wasmannia auropunctata), and habitat destruction by feral goats and donkeys. The size of the population is estimated at probably no more than 500. There may also be extreme fluctuations in habitat and population size due to El Niño effects, but this is not well documented.
|
Geographic Range
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| Range Description: |
Bulimulus indefatigabilis is known from one population on the Galápagos Island of Santiago (585 km²). Its current range is probably less than 3 km².
|
| Countries: |
Native:
Ecuador (Galápagos)
|
| Range Map: |
Click here to open the map viewer and explore range.
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Population
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| Population: |
Known from only one population.
|
| Population Trend: |
Unknown
|
Habitat and Ecology
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| Habitat and Ecology: |
Arid zone; found at base of trees, under lava rocks on Santiago Island.
|
| Systems: |
Terrestrial |
| Major Threat(s): |
Introduced ants (Wasmannia auropuctata), destruction and/or alteration of habitat by feral goats. Habitat and population size may also be affected by El Niño, but his is not well documented.
|
Bibliography
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|
Dall, W.H. 1900. Additions to the insular land-shell faunas of the Pacific coast, especially of the Galapagos and Cocos Islands. Proceedings of the Academy of Natural Sciences of Philadelphia 88-106.
IUCN. 2003. 2003 IUCN Red List of Threatened Species. www.iucnredlist.org. Downloaded on 18 November 2003.
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