Gyraulus crenophilus 

Scope: Global
Language: English

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Taxonomy [top]

Kingdom Phylum Class Order Family
Animalia Mollusca Gastropoda Hygrophila Planorbidae

Scientific Name: Gyraulus crenophilus Hubendick & Radoman, 1959
Taxonomic Notes:

Assessment Information [top]

Red List Category & Criteria: Endangered B1ab(iii) ver 3.1
Year Published: 2010
Date Assessed: 2009-11-25
Assessor(s): Albrecht, C., Hauffe, T. & Schreiber, K.
Reviewer(s): Seddon, M.B. & Cuttelod, A.

Gyraulus crenophilus is restricted to the lake and three feeder springs in the Lake Ohrid water catchment, and is assessed as Endangered B1ab(iii). The total EOO is no more than 500 km2, it lives at low densities and pollution is causing a decline in water quality, which impacts the habitats and feeding areas of this species, which requires clean water and is intolerant of pollution.

Geographic Range [top]

Range Description:This species is endemic to the the Former Yugoslavian Republic of Macedonia (FYROM) part of Lake Ohrid and in the springs near Ohrid town (north-east of the Lake), and in the Albanian Feeder springs system (Tusemista and Zagorican) (C. Albrecht pers. comm. 2009)
Countries occurrence:
Albania; Macedonia, the former Yugoslav Republic of
Additional data:
Number of Locations:4
Lower depth limit (metres):5
Range Map:Click here to open the map viewer and explore range.

Population [top]


It is found at suitable habitats in low abundances.

Current Population Trend:Unknown
Additional data:
Population severely fragmented:No

Habitat and Ecology [top]

Habitat and Ecology:This species is restricted to the littoral zone of the lake with sublacustrine springs and cold water springs. It is probably a species needing a specific (and narrow) constant water temperature and chemistry (C. Albrecht pers. comm. 2009).
Continuing decline in area, extent and/or quality of habitat:Yes

Threats [top]

Major Threat(s):

Pollution from sewage from major cities adjacent to the lake is contaminating the water of the lake. Increasing sediment load (due to construction of new settlements, deforestation and erosion of the neighbouring area) also impacts this gastropod. Agriculture near the Prespa Lake are contaminating the Prespa Lake waters, which are feeding the aquifer of the Lake Ohrid, resulting in increased nutrient load (Matzinger et al. 2006). The quality of habitat in the Albanian springs is declining due to pollution by aquaculture, solid waste produced by domestic use and tourism/recreational activities, as well as over-abstraction of water.

Conservation Actions [top]

Conservation Actions:

There are no conservation actions in place for this species. More sustainable water management is needed to ensure the continuing quality of the habitat. Monitoring habitat trends would be beneficial for this species.

Citation: Albrecht, C., Hauffe, T. & Schreiber, K. 2010. Gyraulus crenophilus. The IUCN Red List of Threatened Species 2010: e.T155643A4813110. . Downloaded on 22 June 2018.
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