Bithynia skadarskii 

Scope: Global
Language: English

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Taxonomy [top]

Kingdom Phylum Class Order Family
Animalia Mollusca Gastropoda Littorinimorpha Bithyniidae

Scientific Name: Bithynia skadarskii Glöer & Pešić, 2007

Assessment Information [top]

Red List Category & Criteria: Endangered B1ab(iii) ver 3.1
Year Published: 2010
Date Assessed: 2009-11-20
Assessor(s): Pešić, V.
Reviewer(s): Fehér, Z., Tomovic, J., Vavrova, L., Van Damme, D., Abdul Malak, D. & Seddon, M.B.

Bithynia skadarskii  is an endemic species of Lake Skadar, where it is known from 3 sites, Karuč, Vranjina, Island Kom.  The lake is suffering rapid eutrophication, and as such the habitat is declining in quality, and as such the species is considered to be threatened.

Europe: Endangered B2a, b(iii)

Mediterranean: Endangered B2a, b(iii)

EU 27: Not applicable.

Geographic Range [top]

Range Description:Bithynia skadarskii  is an endemic species of Lake Skadar, between Montenegro and Albania. It is known from 3 sites, Karuč, Vranjina, Island Kom. This species is listed for the Albanian part of Skadar Lake (Dhora 2009) but without locality.
Countries occurrence:
Albania; Montenegro
Additional data:
Number of Locations:1
Range Map:Click here to open the map viewer and explore range.

Population [top]

Population:Population size and trends for the species is unknown.
Current Population Trend:Unknown
Additional data:
Population severely fragmented:No

Habitat and Ecology [top]

Habitat and Ecology:Bithynia skadarskii lives in the littoral part of the lake between the emergent (Phragmites communis, Typha angustifolia, Scirpus lacuster) and floating (Nymphaea alba, Nuphar luteum, Trapa natans) vegetation.
Continuing decline in area, extent and/or quality of habitat:Yes

Threats [top]

Major Threat(s): The lake is suffering rapid eutrophication as the result of agricultural activities and pollution from domestic sewage.  There is also offtake of water from parts of the lake for domestic supplies in the towns adjacent to the lake.

Conservation Actions [top]

Conservation Actions: No conservation actions in place for the species. Lake Skadar has some ecosystem management plans in place, however, this species requires habitat management to maintain the ecosystem in view of the possible lake-level changes and eutropication, as it  lives in the littoral part of the lake between the emergent and floating vegetation.  Survey-work is required to establish the number of subpopulations in Albania.

Classifications [top]

5. Wetlands (inland) -> 5.5. Wetlands (inland) - Permanent Freshwater Lakes (over 8ha)
suitability:Suitable  major importance:Yes
1. Land/water protection -> 1.2. Resource & habitat protection

In-Place Research, Monitoring and Planning
In-Place Land/Water Protection and Management
  Area based regional management plan:Yes
In-Place Species Management
In-Place Education
7. Natural system modifications -> 7.2. Dams & water management/use -> 7.2.1. Abstraction of surface water (domestic use)
♦ timing:Ongoing    
→ Stresses
  • 1. Ecosystem stresses -> 1.2. Ecosystem degradation

9. Pollution -> 9.3. Agricultural & forestry effluents -> 9.3.1. Nutrient loads
♦ timing:Ongoing    
→ Stresses
  • 1. Ecosystem stresses -> 1.2. Ecosystem degradation

1. Research -> 1.2. Population size, distribution & trends

Bibliography [top]

Dhora, D. 2009. Mollusks of Albania. Archives of Biological Sciences 61(3): 537-553.

Glöer, P. and Pešić, V. 2007. The Bithynia species from Skadar Lake (Montenegro) (Gastropoda: Bithyniidae). Mollusca 25(1): 7-12.

IUCN. 2010. IUCN Red List of Threatened Species (ver. 2010.4). Available at: (Accessed: 27 October 2010).

Citation: Pešić, V. 2010. Bithynia skadarskii. The IUCN Red List of Threatened Species 2010: e.T171957A6812925. . Downloaded on 24 April 2018.
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