The IUCN Red List of Threatened Species™
ISSN 2307-8235 (online)
IUCN 2008: T175127A7104032
Pila wernei
Assessment by: Jørgensen, A., Kristensen, T.K., Stensgaard, A-S. & Van Damme,
D.
View on www.iucnredlist.org
Citation: Jørgensen, A., Kristensen, T.K., Stensgaard, A-S. & Van Damme, D. 2010. Pila wernei. The
IUCN Red List of Threatened Species 2010: e.T175127A7104032.
http://dx.doi.org/10.2305/IUCN.UK.2010-3.RLTS.T175127A7104032.en
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THE IUCN RED LIST OF THREATENED SPECIES™
Taxonomy
Kingdom
Phylum
Class
Order
Family
Animalia
Mollusca
Gastropoda
Architaenioglossa
Ampullariidae
Taxon Name: Pila wernei (Phillipi, 1851)
Synonym(s):
• Ampullaria wernei
Regional Assessments:
• Northeastern Africa
• Western Africa
• Central Africa
Assessment Information
Red List Category & Criteria:
Least Concern ver 3.1
Year Published:
2010
Date Assessed:
May 1, 2009
Justification:
This is a widespread and common species. It is not under threat at present and assessed as Least
Concern.
Geographic Range
Range Description:
Pila wernei is known from scattered localities over a wide area in Africa from Mali to Somalia.
Northern Africa: It is possibly found in the Nile in Egypt (Ibrahim et al. 1999), but there is uncertainty
over ID of specimens as they are more likely to be Pila ovata (Van Damme, pers. comm.).
Northeastern Africa: It occurs in Sudan and south Somalia, and possibly the adjacent part of Kenya. It is
also found in the Omo Delta (Ethiopia) (Van Damme 1976).
Western Africa: This species is found in the Niger River in Mali and southwestern Nigeria, and in Chad.
Country Occurrence:
Native: Cameroon; Central African Republic; Chad; Egypt; Ethiopia; Mali; Nigeria; Somalia; South Sudan;
Sudan
© The IUCN Red List of Threatened Species: Pila wernei – published in 2010.
http://dx.doi.org/10.2305/IUCN.UK.2010-3.RLTS.T175127A7104032.en
1
Distribution Map
© The IUCN Red List of Threatened Species: Pila wernei – published in 2010.
http://dx.doi.org/10.2305/IUCN.UK.2010-3.RLTS.T175127A7104032.en
2
Population
No information available regarding population sizes, but the species is widespread and common.
Current Population Trend: Unknown
Habitat and Ecology (see Appendix for additional information)
This species is found in various standing waterbodies both permanent and seasonal.
Systems: Freshwater
Use and Trade (see Appendix for additional information)
This species is used as animal feed.
Threats
No information available.
Conservation Actions
No specific conservation measures in place for this species.
Credits
Assessor(s):
Jørgensen, A., Kristensen, T.K., Stensgaard, A-S. & Van Damme, D.
Reviewer(s):
Seddon, M., Van Damme, D., Graf, D.L., Appleton, C. & Bennett, L.
© The IUCN Red List of Threatened Species: Pila wernei – published in 2010.
http://dx.doi.org/10.2305/IUCN.UK.2010-3.RLTS.T175127A7104032.en
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Bibliography
Brown, D.S. 1994. Freshwater Snails of Africa and their Medical Importance. Taylor & Francis, London.
Brown, D.S. and Kristensen, T.K. 1993. A field guide to African freshwater snails. Danish Bilharziasis
Laboratory, Charlottenlund, Denmark.
DBL. 1982. Guide de terrain des gastropodes d'eau douce Africaines. 5: Afrique Centrale. Danish
Bilharziasis Laboratory.
Ibrahim, A.M., Bishai, H.M. and Khalil, M.T. 1999. Freshwater Molluscs of Egypt. Department of Nature
Protection, Egyptian Environmental Affairs Agency, Cairo, Egypt.
IUCN. 2010. IUCN Red List of Threatened Species (ver. 2010.3). Available at: http://www.iucnredlist.org.
(Accessed: 2 September 2010).
Köhler, F. and Glaubrecht, M. 2006. The types of Ampullaridae Gray, 1824 (Mollusca, Gastropoda) in the
Malacological Collection of the Natural History Museum, Berlin: an annotated catalogue with lectotype
designations. Mitteilungen aus dem Museum für Naturkunde in Berlin. Zoologische Reihe 82(1): 198-215.
Mandahl-Barth, G., Ripert, C. and Raccurt, C. 1974. Nature du soussol, répartition des mollusques
dulceaquicoles et foyers de bilharzioses intestinale et urinaire au Bas-Zaire. Revue de Zoologie Africaine
88: 553-584.
Same-Ekobo, A., Wibaux-Charlois, M., Kristensen, T.K., Frandsen, F., Deniau, M. and Ripert, C.H. 1984.
Distribution geographique et ecologie des mollusques dulcaquicoles du Cameroun. Institute de
recherches medicales et d'etudes des plantes medicinales, Yaonde, Cameroun.
Van Damme, D. 1976. Taxonomy, ecology and evolution of the fossil freshwater molluscs in the Lake
Rudolf Basin. Biology, Ghent University.
Van Damme, D. (ed.). 1984. Freshwater mollusca of Northern Africa. In: Dumont, Henri (ed.),
Developments in Hydrobiology, pp. 164. Dr. W. Junk, Dordrecht.
Citation
Jørgensen, A., Kristensen, T.K., Stensgaard, A-S. & Van Damme, D. 2010. Pila wernei. The IUCN Red List of
Threatened Species 2010: e.T175127A7104032. http://dx.doi.org/10.2305/IUCN.UK.20103.RLTS.T175127A7104032.en
Disclaimer
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External Resources
For Images and External Links to Additional Information, please see the Red List website.
© The IUCN Red List of Threatened Species: Pila wernei – published in 2010.
http://dx.doi.org/10.2305/IUCN.UK.2010-3.RLTS.T175127A7104032.en
4
Appendix
Habitats
(http://www.iucnredlist.org/technical-documents/classification-schemes)
Habitat
Season
Suitability
Major
Importance?
5. Wetlands (inland) -> 5.1. Wetlands (inland) - Permanent
Rivers/Streams/Creeks (includes waterfalls)
-
Suitable
-
5. Wetlands (inland) -> 5.2. Wetlands (inland) Seasonal/Intermittent/Irregular Rivers/Streams/Creeks
-
Suitable
-
5. Wetlands (inland) -> 5.4. Wetlands (inland) - Bogs, Marshes, Swamps,
Fens, Peatlands
-
Suitable
-
5. Wetlands (inland) -> 5.5. Wetlands (inland) - Permanent Freshwater
Lakes (over 8ha)
-
Suitable
-
5. Wetlands (inland) -> 5.6. Wetlands (inland) - Seasonal/Intermittent
Freshwater Lakes (over 8ha)
-
Suitable
-
5. Wetlands (inland) -> 5.7. Wetlands (inland) - Permanent Freshwater
Marshes/Pools (under 8ha)
-
Suitable
-
5. Wetlands (inland) -> 5.8. Wetlands (inland) - Seasonal/Intermittent
Freshwater Marshes/Pools (under 8ha)
-
Suitable
-
5. Wetlands (inland) -> 5.9. Wetlands (inland) - Freshwater Springs and
Oases
-
Suitable
-
Use and Trade
(http://www.iucnredlist.org/technical-documents/classification-schemes)
End Use
Local
National
International
Food - animal
Yes
No
No
Research Needed
(http://www.iucnredlist.org/technical-documents/classification-schemes)
Research Needed
1. Research -> 1.1. Taxonomy
1. Research -> 1.2. Population size, distribution & trends
1. Research -> 1.3. Life history & ecology
1. Research -> 1.5. Threats
Additional Data Fields
© The IUCN Red List of Threatened Species: Pila wernei – published in 2010.
http://dx.doi.org/10.2305/IUCN.UK.2010-3.RLTS.T175127A7104032.en
5
Population
Population severely fragmented: No
© The IUCN Red List of Threatened Species: Pila wernei – published in 2010.
http://dx.doi.org/10.2305/IUCN.UK.2010-3.RLTS.T175127A7104032.en
6
The IUCN Red List Partnership
The IUCN Red List of Threatened Species™ is produced and managed by the IUCN Global Species
Programme, the IUCN Species Survival Commission (SSC) and The IUCN Red List Partnership. The IUCN
Red List Partners are: BirdLife International; Botanic Gardens Conservation International; Conservation
International; Microsoft; NatureServe; Royal Botanic Gardens, Kew; Sapienza University of Rome; Texas
A&M University; Wildscreen; and Zoological Society of London.
THE IUCN RED LIST OF THREATENED SPECIES™