Bulimulus nesioticus

Taxonomy

Assessment Information

Geographic Range

Population

Habitat and Ecology

Threats

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Taxonomy [top]

Kingdom	Phylum	Class	Order	Family
ANIMALIA	MOLLUSCA	GASTROPODA	STYLOMMATOPHORA	ORTHALICIDAE

Scientific Name:	Bulimulus nesioticus
Species Authority:	(Dall, 1896)
Taxonomic Notes:	Synonym = Naesiotus nesioticus.

Assessment Information [top]

Red List Category & Criteria:

Vulnerable B1ab(iii)c(iv) ver 3.1

Year Published:

2003

Assessor/s:

Parent, C.

Reviewer/s:

Coppois, G. & Seddon, M.B. (Mollusc Red List Authority)

Contributor/s:

Justification:
Bulimulus nesioticus is endemic to Santiago Island in the Galápagos Islands. It is known from six subpopulations on the island, with a range of suitable habitat less than 200 km². Population size is known to fluctuate widely from year to year, possibly due to climate changes in climate as a result of El Niño cycles. The main threat to the species is destruction and/or alteration of habitat by introduced goats.

History:

1996	–	Vulnerable
1994	–	Endangered (Groombridge 1994)
1990	–	Endangered (IUCN 1990)

Geographic Range [top]

Range Description:	Bulimulus nesioticus is endemic to the Galápagos Island of Santiago (585 km²). The range of suitable habitat for the species is less than 200 km².
Countries:	Native: Ecuador (Galápagos)
Range Map:	Click here to open the map viewer and explore range.

Population [top]

Population:	Population size is seen to fluctuate widely from year to year.
Population Trend:	Unknown

Habitat and Ecology [top]

Habitat and Ecology:	Humid and pampa zones. Found on shrubs and ferns, under lava rocks and on trunks of trees (mainly Zanthoxylum fagara, Tournefortia spp. and Psychotria rufipes).
Systems:	Terrestrial

Threats [top]

Major Threat(s):	Destruction and/or alteration of habitat by introduced goats is the main threat to the species. There is an established population of the invasive little fire ant, Wasmannia auropunctata, on the island (Silberglied 1972).

Major Threat(s):

Destruction and/or alteration of habitat by introduced goats is the main threat to the species. There is an established population of the invasive little fire ant, Wasmannia auropunctata, on the island (Silberglied 1972).

Citation:	Parent, C. 2003. Bulimulus nesioticus. In: IUCN 2012. IUCN Red List of Threatened Species. Version 2012.2. <www.iucnredlist.org>. Downloaded on 24 May 2013.
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