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Description |
Geographic Range [top]
Range Description: Recorded on three limestone outcrops along a 30 km stretch of the Kinabatangan Valley, Sabah, Malaysia.
Countries occurrence:
Native:
Malaysia (Sabah)
Additional data:
Range Map: Click here to open the map viewer and explore range.
Population [top]
Population: Recent surveys failed to find the species on one of the hills, Suan Lamba (sampled at 50 separate localities in 2003), from which it has been recorded in the past (Vermeulen 1994).
Current Population Trend: Decreasing
Additional data:
Habitat and Ecology [top]
Habitat and Ecology: Occurs in lowland tropical Dipterocarp rainforest on limestone. currently present at only two limestone outcrops; absent in the surrounding non-calcareous area
Systems: Terrestrial
Threats [top]
Major Threat(s): Quarrying and repeated cycles of logging and fire on and around the outcrops cause drying out of the forest and decline of Prosobranch populations. It may also be disappearing due to competition and hybridization with O. concinnum.
Citation: Schilthuizen, M. & Vermeulen, J. 2004. Opisthostoma simplex. The IUCN Red List of Threatened Species 2004: e.T44626A10929865. http://dx.doi.org/10.2305/IUCN.UK.2004.RLTS.T44626A10929865.en. Downloaded on 07 May 2018.
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