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Gyraulus shasi 

Scope: Global
Language: English
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Taxonomy [top]

Kingdom Phylum Class Order Family
Animalia Mollusca Gastropoda Hygrophila Planorbidae

Scientific Name: Gyraulus shasi Gloer & Pesic 2009

Assessment Information [top]

Red List Category & Criteria: Critically Endangered B1ab(iii)+2ab(iii) ver 3.1
Year Published: 2010
Date Assessed: 2009-11-24
Assessor(s): Pešić, V.
Reviewer(s): Cuttelod, A., Abdul Malak, D., Tomovic, J., Vavrova, L. & Fehér, Z.
Justification:

This species is found only in the littoral region of Lake Šasko, in Montenegro. The lake itself is very small, with a surface area of 3.5km2. There are existing threats to the habitats and known localities from eutrophication of the lake and interruption of communication with the river Bojana. This species is therefore considered to be Critically Endangered (CR) B1ab(iii)+2ab(iii).

Geographic Range [top]

Range Description:This species is endemic for Montenegro, known only from Šasko Lake (south of Montenegro, near the town of Ulcinj).
Countries occurrence:
Native:
Montenegro
Additional data:
Estimated area of occupancy (AOO) - km2:1
Number of Locations:1
Range Map:Click here to open the map viewer and explore range.

Population [top]

Population:Current population and population trends are unknown for this species.
Current Population Trend:Unknown
Additional data:
Population severely fragmented:No

Habitat and Ecology [top]

Habitat and Ecology:This species lives between the emergent (Phragmites communis) and floating (Nymphaea alba, Nuphar luteum) vegetation in the littoral zone of the Lake Šasko.
Systems:Freshwater
Continuing decline in area, extent and/or quality of habitat:Yes

Use and Trade [top]

Use and Trade: There is no trade use for this species

Threats [top]

Major Threat(s): The Lake Šasko is undergoing rapid eutrophication, which has been evident in the last decade. The dimension of the lake is small (3.5 km2), the water of Lake Šasko comes originally from Bojana river and several springs. The communication with the Bojana river is interrupted during summer period (July and August) resulting in a decrease in the level of water of the lake.

Conservation Actions [top]

Conservation Actions: No conservation actions exist for this species. Monitoring of the habitat is recommended.

Citation: Pešić, V. 2010. Gyraulus shasi. The IUCN Red List of Threatened Species 2010: e.T164870A5933408. . Downloaded on 12 December 2017.
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