Bulimulus darwini 

Scope: Global
Language: English

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Taxonomy [top]

Kingdom Phylum Class Order Family
Animalia Mollusca Gastropoda Stylommatophora Orthalicidae

Scientific Name: Bulimulus darwini (Pfeiffer, 1846)
Naesiotus darwini (Pfeiffer, 1846)
Taxonomic Notes: Synonym = Naesiotus darwini.

Assessment Information [top]

Red List Category & Criteria: Vulnerable B2ab(iii)c(ii,iii,iv) ver 3.1
Year Published: 2003
Date Assessed: 2003-04-30
Needs updating
Assessor(s): Parent, C.
Reviewer(s): Coppois, G. & Seddon, M.B. (Mollusc Red List Authority)
Bulimulus darwini is endemic to Santiago Island in the Galápagos. Five subpopulations are known on the island and total range area is likely to be less than 2,000 km². The species is found throughout the humid zone on Santiago Island.

It was reduced to a few small populations in 1970’s because of habitat destruction by feral goats, pigs and donkeys. However, the wild pigs were exterminated from this island in 2001, and goats and donkeys are being exterminated at the moment, so Santiago should no longer have goats or donkeys in a few years from now. The vegetation on the island now has started to grow back and the land snail populations are now larger and more numerous. However, it seems that this species is highly influenced by El Niño events with subpopulation sizes fluctuating from year to year.
Previously published Red List assessments:

Geographic Range [top]

Range Description:Bulimulus darwini is endemic to The Galápagos Island of Santiago (585 km²). Total range area is estimated to be less than 2,000 km².
Countries occurrence:
Ecuador (Galápagos)
Additional data:
Range Map:Click here to open the map viewer and explore range.

Population [top]

Population:Five subpopulations are known on the island.
Current Population Trend:Unknown
Additional data:

Habitat and Ecology [top]

Habitat and Ecology:Humid and pampa zones. Found mainly on shrubs and small trees (Tournefortia spp., Psychotria rufipes, Zanthoxylum fagara) and ferns.

Threats [top]

Major Threat(s): Main threats to the species are introduced ants (Wasmannia auropunctata) and destruction and/or alteration of habitat by introduced goats and donkeys. The wild pig population has now been removed from the island and vegetation on the island is beginning to recover.

Citation: Parent, C. 2003. Bulimulus darwini. The IUCN Red List of Threatened Species 2003: e.T3289A9732794. . Downloaded on 23 June 2018.
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